Ieeeansi 571290 PDF

IEEE/PES
Transformers
Committee
Meeting Minutes
April 12, 2001
IEEE/PES TRANSFORMERS COMMITTEE
MEETING
April 12, 2001
Amsterdam, The Netherlands

IEEE/PES TRANSFORMERS COMMITTEE MEETING
AMSTERDAM, THE NETHERLANDS
APRIL, 12, 2001
ATTENDANCE SUM MARY
MEMBERS PRESENT
Anderson, Greg Antosz, Steve Artega, Javier Balma, Peter

Barker, Ron Barnard, Dave Blackburn, Gene III Brown, Charles
Chu, Don Degeneff, Bob Dohnal, Dieter Dudley, Richard
Elliot, Fred Ellis, Keith Fallon, Don Franchek, Mike
Griesacker, Bill Haas, Michael Hanique, Ernst Hanus, Ken
Harlow, Jim Hayes, Roger Henning, Bill Hopkinson, Phil
James, Rowland Jonnatti, Tony Juhlin, Lars-Erik Kennedy, Sheldon
Khalin, Vladimir Lackey, John Lau, Mike Lindgren, Stan
MacMillan, Donald Marlow, Dennis Matthews, John McClure, Phil
McNelly, Susan Sam Mehta Mitelman, Mike Papp, Klaus
Patel, Bipin Patterson, Jr., Wes Payne, Paulette Perkins, Mark
Platts, Don Preininger, Gustav Prevost, Tom Puri, Jeewan
Riffon, Pierre Schweiger, Ewald Sim, Jin Singh, Prit
Snyder, Steven Stiegemeier, Craig Sullivan, John Tuli, Subhash
Wagenaar, Loren Ward, Barry Watson, Joe Zhao, Peter
MEMBERS ABSENT
Aho, David Allan, Dennis Allustiarti, Raymond Anderson, Glenn

Altman, Mike Arnold, Jr. Jim Atout, Khaled Aubin, Jacques
Ayers, Don Bancroft, Roy Barnes, Mike Bartley, Bill
Bertolini, Edward Binder, Jr., Wally Bonnuchi, Joe Borst, John
Boettger, Bill Cambre, Jr., Max Carter, Bill Cash, Don
Chiu, Bill Clark, Tom Compton, Olin Corkran, Jerry
Crouse, John Dahinden, Vincez Diamantis, Tom Dix, Larry
Duckett, Don Ebert, John Feghali, Pierre Fleeman, Jeff
Foldi, Joe Foster, Sam Frank, Jerry P.E. Galloway, Dudley
Gayton, Carlos Ghafourian, Ali Gillies, Jim Girgis, Ramsis
Graham, Richard Grunert, Bob Grubb, Bob Gryszkiewicz, Frank
Hager, Jr., Red Haggerty, Kent, P.E. Hall, Geoff Hansen, Wayne
Harley, Jack Hartgrove, Bob Heinrichs, Frank Highton, Keith
Hoefler, Pete Holdway, Tim Huddleston, Jim Iman, Mike
Johnson, Jr., Chuck Johnson, David Jhonsa, VJ Kallaur, Gene
Kappler, Cal Kelly, Joe Kennedy, Bill Kim, Dong
Kline, Don Koenig, E. Lazar, John Lewis, Frank
Lewis, Tim Light, Hal Loveless, Mark Lowdermilk, Larry
Lowe, Don Lowe, Richard Lundquist, Tom Ma, Joe
Maguire, Willliam Marek, Rick Massouda, Tito McGill, Jack
McMillen, Check McQuin, Nigel McShane, Patrick McTaggart, Ross
Miller, Kent Minkowitz, Russ Molden, Arthur Moore, Harold
Morehart, Gene Mulkey, Daniel Murray, Chuck Musil, R.J.
Mutschler, Bill Nicholas, Ray Niemann, Carl Norton, Ed
Paiva, Gerry Patton, Jesse Perco, Dan Pekarek, Tom
iii
Pierce, Lin Plaster, Leon Poulin, Bertrand Progar, John
Purohit, Dilip Raymond, Charlie Risse, Peter Robbins, Chris
Robinson, Butch Romano, Ken Rossetti, John Ruevekamp, Henk
Sankar, V.S.N Sampat, Mahesh Savio, Leo Scheu, Bob
Sharma, Devki Shenoy, Vic Shertukde, Hemchandra Shteyh, Ibrahim
Shull, Stephen Smith, Ed Smith, Jerry Smith, Jim
Smith, Steve Stahara, Ron Stein, Werner Stoner, Ron
Templeton, Jim Thenappan, Vis Thomas, Ray Thompson, James
Traub, Tom Trummer, Edgar Vaillancourt, Georges Veitch, Bob
Weffer, Felipe Wilks, Alan Whearty, Bob Wimmer, Bill
Woodcock, David Zhao, Tony
GUESTS PRESENT
Adams, Carl Ahmad, Naeem Baronski, Derek Bassett, Tom
Beauchemin, Claude Bello, Oscar Cancino, Alvero Christini, Mark
Darovny, Bill Darwin, Alan Davis, Eric Delgado, A.M.
Delvecchio, Bob Eckholz, Klaus Fausch, Reto Forrest, Alan
Foster, Derek Fyvie, Jim Ganser, Robert Garcia, Eduardo
Gardner, James Garnitschnig, Andreas Garza, Joseph Gauthier, John
Graham, John Heinzig, Peter Holland, J. Jaroszewski, Marion
Kawashima, Takeshi Kiethly, Dave Klaponski, Brian Kranich, Neil
Ladroga, Rick Leuenberger, Boyd Lortie, Raymond Mango, Joe
Millward, Paul Munro, Andy Nelson, Tom Newman, Kevin
Nielsen, Jim Nordman, Haase Nordman, Russ Oommen, TV
Purra, Elnar Reitter, George Riboud, Jean-Christophe Schwartz, Wes
Shen, Dazhong Simpson, Bill Speegle, Andy Steineman, Andy
Stensland, Len Subramanian, Raman Swinderman, Craig Sysuhenko, Oleg
Termine, Guiseppe Wicks, Roger Zhongdong, Wang Ziomek, Waldemar
iv
Contents
CLAUSE PAGE
1.0 Chair’s Report – B. K. Patel...........................................................................................................1
1.1 Report on the Technical Council Meeting, January 30, 2001 in Columbus .................................1
1.2 Transformers Committee Report to Technical Council................................................................4
2.0 Approval of Minutes of October 18, 2000 - B. K. Patel..................................................................7
3.0 Administrative Subcommittee - B. K. Patel......................................................................................7
3.1 Introduction of Members and Guests.........................................................................................7
3.2 Approval of the Niagara Falls Meeting Minutes .........................................................................7
3.3 Additions to and/or Approval of the Agenda..............................................................................7
3.4 Meeting Arrangements, Host Reports, and Committee Finances - G.W. Anderson.....................8
3.5 IEEE Delegation Report ANSI C57 Committee - J. W. Matthews.............................................8
3.6 Committee Service Awards - J. W. Matthews.........................................................................10
3.7 Chair’s Report - B. K. Patel ...................................................................................................10
3.8 Vice Chair’s Report - H. J. Sim ..............................................................................................10
3.9 Secretary’s Report - K. S. Hanus ...........................................................................................10
3.10 IEEE Standards Activity - N. Ahmad ....................................................................................11
3.11 Standards Subcommittee - T. A. Prevost...............................................................................15
3.12 Subcommittee Activities - Subcommittee Chairs ....................................................................15
3.13 Old Business.........................................................................................................................17
3.14 New Business.......................................................................................................................17
3.15 Adjournment.........................................................................................................................17
4.0 Editor's Report - M. Christini.......................................................................................................19
5.0 Vice Chair’s Report - H. J. Sim ....................................................................................................20
5.1 PES Technical Council Committees.........................................................................................20
5.2 Technical Paper Reviews ........................................................................................................24
6.0 Transformers Standards - T. A. Prevost ........................................................................................25
6.1 Chair's Remarks .....................................................................................................................25
6.2 Old Business...........................................................................................................................25
6.3 New Business.........................................................................................................................26
7.0 Recognition and Awards - J. W. Matthews ...................................................................................27
7.1 Certificates of Appreciation.....................................................................................................27
7.2 Nominations for IEEE, PES, and Technical Council Awards....................................................27
7.2 IEEE Standards Association Working Group Chair Awards ....................................................27
8.0 Meetings Planning Subcommittee - G. W. Anderson......................................................................29
8.1 Committee Finances................................................................................................................29
8.2 Past & Present Meetings.........................................................................................................29
8.3 Future Meetings......................................................................................................................29
8.4 New Business.........................................................................................................................30
v
9.0 Reports of Technical Subcommittees.............................................................................................33
9.1 Dry-Type Transformers - W. F. Patterson, Chair ....................................................................33
9.2 Distribution Transformers - E. Smith, Chair..............................................................................39
9.3 Dielectric Test - L. B. Wagenaar - Chair .................................................................................39
9.4 HVDC Converter Transformers & Smoothing Reactors S. C. - R. Dudley, Chair.....................43
9.5 Instrument Transformers - J. E. Smith, Chair............................................................................45
9.6 Insulating Fluids - F. J. Gryszkiewicz, Chair.............................................................................47
9.7 Insulation Life - D. W. Platts, Chair.........................................................................................49
9.8 Performance Characteristics - D. J. Fallon, Chair.....................................................................52
9.9 Power Transformers Subcommittee - E.G. Hager, Jr. Chair ....................................................60
9.10 Underground Transformers & Network Protectors - C. Niemann, Chair................................67
9.11 Audible Sound and Vibration - J. Puri, Chair .........................................................................67
9.12 Bushings - F. E. Elliott, Chair ................................................................................................68
10.0 Reports of Liaison Representatives..............................................................................................71
10.1 EPRI - D. Ward ...................................................................................................................70
10.2 SCC4 - P. A. Payne .............................................................................................................76
10.3 TC 14 TAG - P. J. Hopkinson..............................................................................................76
11.0 Old Business...............................................................................................................................81
12.0 New Business.............................................................................................................................81
13.0 Adjournment...............................................................................................................................81
Attachment 1 – Status Report of Standards of IEEE/PES Transformers Committee..............................82
Attachment 2 – Coordination Activities of the IEEE/PES Transformers Committee...............................95
Attachment 3 – Liaison Society Contact Information............................................................................96
Attachment 4 – Meeting Room Attendance Record.............................................................................98
vi
IEEE PES TRANSFORMERS COMMITTEE MEETING
Thursday, April 12, 2001
Chair: B. K. Patel Vice Chair: H. J. Sim
Secretary: K. S. Hanus
1.0 Chairs’s report, remarks & announcements – B. K. Patel

The chair B. K. Patel called the meeting to order at 8:00 A.M. Mr. Patel opened the meeting by
covering a few minor announcements. They include:
Charlie Honey passed away about 6 months ago. Charlie will be missed, as he was very active and
supportive on the committee.
Everyone needs to make sure e-mail addresses are correct because in the future the use of electronic
mailing of minutes and balloting will be more prominent. For those whom are IEEE members it may
work well to set up an IEEE alias to keep from having to constantly make corrections to changing e-
mail addresses.
The current host, Ernst Hanique then gave a report on the attendance and other statistics on the meeting.
The statistics were:
Registration – 265
Companions – 67
Sunday Evening – 211
Nijmegen Trip - 210
Tuesday Luncheon – 131
Wednesday Evening Social – 202
Tuesday Companions Tour – 63
Wednesday Companion Tour - 57
The Committee thanked Ernst with a round of applause. Ernst also made a special thanks to Greg
Anderson for his help in making the meeting a great success.
Bipin then covered the main points of his chair’s report shown in full length below
1.1 Report on the Technical Council Meeting, January 30, 2001 in Columbus, OH
Attendance for the Winter Meeting stood at approximately 1660 at the time of the Technical Council
Meeting.
1.1.1 Chair’s report
The following is a highlight of the report:
Significant Accomplishments in 2000:
Minutes page - 1
1.0 Chair’s Report (cont’d)
Minutes page - 1
The emphasis for the year was the reformulation of the Technical Council to better include “new
players” who are assuming significant roles in the restructured electric utility industry. The originally
proposed plan to restructure the existing technical committees was abandoned at the SM2000 meeting.
Rather, the Technical Council added two new committees to fill the identified needs.
• The Emerging Technologies committee will treat matters in which the dominant factor is the
research, development and application of emerging technologies for the Power Industry.
• The Policy and Markets Committee will treat matters in which the dominant factor is the
commercial aspects of the Electric Power Industry.
Benefits to Industry from the 2000 Work:
There are two primary benefits to industry accomplished by the technical activities arm of PES, through
its technical committees:
1. The exchange of technical information in technical papers and educational formats.
2. The preparation and maintenance of industry standards.
Almost all the committees participate in these activities. The more specific activities are on going and
too numerous to itemize.
Benefits to Volunteer Participants from the 2000 Work:
All committee, sub-committee, and working group members benefit from programs through the sharing
of information and ideas. These benefits are exhibited in:
• Paper, panel, and poster sessions or formalized training as through Tutorials and Special
Technical Sessions
• Discussions in working group, sub-committee, and main committee meetings during each
committee and PES meeting.
• Healthy interaction between industry engineers and academic researchers
Recognition of Outstanding Performance:
At least 18 PES technical committee members were elevated to IEEE Fellow grade in 2000 or
announced for 2001. Various committees report other individual awards such as Working Groups and
Prize Papers.
Significant Plans for 2001:
The major objective for 2001 is to integrate the two new technical committees into the Technical
Minutes page - 2
Council. The two new committees are:
• Energy Policy and Markets Committee
• Emerging Technologies Committee
Particular committees note their involvement in conferences outside of the PES structure, strengthening
of liaison with IEC, constant review of the many standards to be acted upon, preparation of Tutorials
and Special Technical Sessions and continued membership growth initiatives.
Two points of particular note:
• The Insulated Conductors Committee will hold its regular Fall meeting in conjunction with
the T&D Show in Atlanta in October. This will bear watching as to the merits of other
committees meeting with various shows in the future. (See Problems and Concerns,
below).
• PS Communications is formulating thoughts on a thorough restructuring to include

computing and information technology.
Problems and Concerns:
1. Motivation, where required, of volunteers to accomplish tasks in a timely and professional manner.
The modifier “where required” is stressed to recognize that most volunteers are extremely
conscientious. In these cases, outstanding performance at lower committee levels culminates in
committee officer appointments. It is very unfortunate that the laxity exhibited by some degrades the
overall performance to the extent that the whole enterprise suffers; to wit, Transactions Papers Reviews.
I plan to institute a procedure whereby new committee officers, normally at the secretary (incoming)
level, are made thoroughly aware of their pending responsibilities and obligations as their responsibilities
increase.
2. Diminished utility industry support for engineers to participate in professional activities. This seems to
be of particular significance to the utility industry; in some committees the participation is increasing in
the Producer and General Interest categories to the extent that overall headcount is up.
Particular committee comments:
• Electric Machinery Committee had a problem at the WPM in Singapore in that 14 people
had submitted papers that got published in the Proceedings and then they did not show up
nor did they pay registration fees. Therefore, they had their papers published for free of
charge. Hopefully this problem has now been resolved at the PES Staff level.
• There is a great deal of concern within the membership of the Insulated Conductors
Committee about meeting jointly with the T&D Show in October. Many believe that since the
ICC requires almost four full days to conduct its normal business, meeting with the T&D show
will divert the focus of the ICC's core functions to other PES functions, thus reducing the
ICC's productivity and efficiency.
Minutes page - 3
• PS Operations notes that joint standards with NERC would be a major benefit to industry,
but NERC has declined to cooperate with IEEE.
• PS Relay Committee laments that they do not have close ties with other technical
committees, and often only belatedly hear of activities in other committees in which they would
want to have a strong input.
• Switchgear Committee has concerns about PES viability as a standards-writing group in the
face of harmonization with IEC. There is the concern that IEC will overwhelm and overtake
our efforts. The Chair feels that since many of the users of ANSI gear remain very solidly in
the ANSI/IEEE realm, the reports of an IEC takeover are premature.
1.1.2 Future meeting changes
Teddy Puttgen reported the following:
For 2001 and 2002 the meetings schedules will remain as they were in the past. In 2003 this will
change and there will be a general meeting in the Spring of each year and in the Fall there will be a
conference and exposition. In odd years this will be T&D and in even years the PICA conference. The
general meeting is intended to provide a forum, which will encourage those committees who meet
separately to hold their meetings in conjunction with the general meeting in order to reap the benefits of
cross committee discussions, especially in the areas of emerging technologies. However, it is not a
requirement that the all committees meet with the general meeting.
A proposal for the schedule of the general meetings was sent to each Technical Committee Chair for
review and will be finalized by the time of theVancouver meeting (July 15-19,2001).
1.2 Transformers Committee report to Technical Council
The following is an abbreviated version of my report to Technical Council for the Committee:
1.2.1 Committee meeting activities
Our Fall 2000 meeting was held October 15-18, 2000 in Niagara Falls, Canada. Mr. Roger Hayes of
VA TECH Ferranti-Packard Transformers Limited was our host. A record total of 361 members and
guests attended the meeting.
Membership of the Transformers Committee currently stands at 182 members and 19 Emeritus
members. The regular members consist of 87 producers, 53 users, and 42 general interest. Our
invitation list consists of approximately 600 engineers and managers in the transformer and utility
industry. Attendance at our semi-annual meetings is typically near 300. Anyone with an interest in
furthering the technology is welcome at our meetings. With active participation, an invitation is extended
to become a member.
Minutes page - 4
The Committee goals are to encourage open participation in transnationalization of transformer

standards; to promote technical and educational endeavors such as panel sessions, technical
presentations, peer review of technical literature on related subjects; and to support the efforts of the
Power Engineering Society.
Future Meetings
Spring 2001:
April 8-12, 2001, Amsterdam, The Netherlands. Contact Ernst Hanique, host @ Smit Transformers +
(31) 024-3568744, fax + (31) 024-3568748 or one of the Committee Officers.
Fall 2001:
October 14-18, 2001, Orlando, FL, USA. Contact Joe Watson (co-host) @ Florida Power & Light
+ (561) 691-2206, fax (561) 694-4161 or John Progar (co-host) @ Ohio Transformer (800) 591-
2256, fax + (941) 722-2549 or one of the Committee Officers.
Spring 2002:
Vancouver, BC, Canada. Contact Mike Lau, host @ BC Hydro + (604) 528-3201, fax + (604) 528-
3347 or one of the Committee Officers.
1.2.2 2001 Winter Power Meeting technical sessions
The Transformers Committee is sponsoring one presentation session on transformers during the Winter
Power Meeting.
1.2.3 Transformer standards and coordination activities
The Transformers Committee takes responsibility for development and revision of IEEE Standards that
fall within its scope. These Subcommittees currently have over fifty Working Groups and Task Forces
preparing proposals for standards projects. Information on these standards and projects can be
obtained by visiting our WWW homepage:
http://www.Transformerscommittee.org
Links to information on our future meeting sites and other information on Transformer Standards can
also be found there.
Our WWW site will link you to the IEEE Standards Status Report that contains titles, abstracts, and
names of contacts for each of the IEEE standards. This report is updated quarterly by the IEEE
Standards Department. The status of transformer standards not listed in the IEEE quarterly report,
either because they have been withdrawn, or they are not IEEE standards, are also included on the
Transformers Committee Web site.
Minutes page - 5
Transformers Committee officers and Administrative Subcommittee members are also members of the
USNC Technical Advisory Group to TC-14 (Transformers and Reactors). We continue to have
productive meetings of the TAG at each Committee meeting.
1.2.4 Other noteworthy activities
The Transformers Committee recently created a new working subcommittee called "Meeting Planning
Subcommittee". This active group consists of individuals and hosts of previous meetings that assist and
"train" upcoming meeting hosts in organizing and executing a meeting. One of the goals of this new
Subcommittee is to simply make meetings more enjoyable to attend. We find that attendees are more
focused and productive at meetings that are similar in appearance & schedule and are held at
comfortable facilities. As result, the attendance at the Committee meetings has grown with new
participants. Over 300 members & guests and over 90 spouses/companions attended each of the last
two meetings.
We have also expanded and improved our web page mentioned above into a very useful focal point
where members and interested parties can obtain general news and information about future meetings
and download past meeting minutes. We have also incorporated an on-line meeting pre-registration
process provided by IEEE Travel & Conference Management Services (www.ieeeconferences.org)
which allows attendees to register for meetings and events via the Internet using a major credit card. It is
also becoming much easier to host a Transformers Committee meeting. Services such as on-line pre-
registration, outsourced on-site registration services, and centralized financial services (also provided by
IEEE TCMS) has allowed the host to "be a host" and concentrate on local issues. Those interested in
hosting a future Transformers Committee meeting can contact Greg Anderson at gwanderson@ieee.org.
Bipin K. Patel, Chair
Minutes page - 6
2.0 Approval of minutes of October 18, 2000 - B.K. Patel
The minutes of the Niagara Falls meeting were approved as written.
3.0 Administrative Subcommittee – Bipin K. Patel
Chairman Patel covered the key points of the Administrative Subcommittee Meeting held on April 8,
2001. See the Administrative Subcommittee Meeting Minutes in full length below for details.
3.1 Introduction of members and guests
Chair Patel called the meeting to order at 2:00 p.m., Sunday, April 8, 2001, in the Orange 1 Room of
the Hilton Amsterdam Hotel in Amsterdam, The Netherlands.
The following members of the Subcommittee were present:
K. S. Hanus B. K. Patel
R. F. Dudley D. Platts
F. E. Elliott Greg Anderson
D. J. Fallon T. A. Prevost
Wes Patterson J. Puri
H. J. Sim J. W. Matthews
L. B. Wagenaar
The following guests were present:
Naeem Ahmad
Peter Balma
Terry deCourcelle
Ernst Hanique
Tom Lundquist
3.2 Approval of the Niagara Falls meeting minutes
The minutes of the previous Administrative Subcommittee meeting in Niagara Falls were approved as
written.
3.3 Additions to and/or approval of the agenda
The previously communicated agenda was generally followed except with the following changes and
additions:
Minutes page - 7
Susan McNelly will report for Frank Gryszkiewicz, John Sullivan will report for Carl Niemann, Tom
Lundquist will report for Red Hager. Additional items include discussion of the altitude correction
factor, sharing committee mailing list to outside parties and the upcoming corrections
to the O&P manual.
3.4 Meeting arrangements, host reports, and committee finances – G.W. Anderson
Greg presented his report, which will be included in the Committee meeting minutes.
3.5 IEEE delegation report ANSI C57 Committee – J.W. Matthews
3.5.1 Ballots
The Delegation has responded to nine ballots since the meeting in Niagara Falls, ON, Canada.
Affirmative ballots were returned for the following:
• PC57.12.59/D3.2 Revision: “Guide for Dry-Type Transformer Through-Fault Current Duration”
• PC57.12.80/D3 Second Recirculation: “Standard Terminology for Power and Distribution

Transformers”
• PC57.16-1996 Reaffirmation: “IEEE Standard Requirements, Terminology, and Test Code for
Dry-Type Air-Core Series-Connected Reactors”
• PC57.19.100-1995 Reaff. Recirc.: “IEEE Guide for Application of Power Apparatus Bushings”
• PC57.93 Reaffirmation: “IEEE Guide for Installation of Liquid-Immersed Power Transformers”
• PC57.123/D1.7: “Guide for Transformer Loss Measurement”
• PC57.135/D12 Recirculation: “Guide for the Application, Specification and Testing of Phase-
Shifting Transformers”
Abstention ballots were returned for the following:
• C57.12.32/D4 “Enclosure Integrity for Submersible Equipment”
• C57.12.57 “Ventilated Dry-Type Network Transformers 2500 kVA and Below, Three-Phase,
with High Voltage 34 500 Volts and below, Low Voltage 216Y/125 and 480Y/277 Volts -
Requirements”
These two ballots were voted as abstention due to the procedural issue of lack of indemnification for
IEEE working group members while developing a NEMA copyrighted document.
3.5.2 Processes for development of NEMA copyrighted C57 documents
(4/12/01 Addendum – An agreement has taken place subsequent to the submittal of this
original report, which will eliminate the need for the March 13, 2001 actions detailed below.
Minutes page - 8
3.0 Administrative Subcommittee (cont’d)
IEEE and NEMA Staffs held a telephone conference on 4/11/01. During this conference they
agreed to pursue a joint copyright agreement under which the IEEE working group members
will be provided indemnification by IEEE. A goal was established to complete this agreement
by May 14, 2001.)
NEMA will not indemnify IEEE working group members while developing a NEMA copyrighted
document. IEEE provides indemnification of all working group members on their copyrighted
documents. IEEE requested NEMA to transfer copyright of certain C57 documents to IEEE last year
in order to provide this indemnification. NEMA has taken no action regarding this request.
With concurrence of the Administrative Subcommittee of the Transformers Committee, a letter was sent
to Sheldon Kennedy, Chair of the NEMA Transformer Section, on March 13, 2001, stating the
following:
“Due to the fact that IEEE Transformers Committee members participating in the development
of NEMA copyrighted C57 documents are not indemnified by NEMA, and that we have not
been able to obtain agreement from the NEMA Transformer Section regarding transfer of
copyright from NEMA to IEEE, we find it necessary to cease our work on the following
documents:
ANSI C57.12.10, .20, .22, .24, .25, .28, .29, .31, .32, .40, .50, .52, .55, and .57.
We regret having to take this action, but no acceptable alternative has been presented to avoid
it. We realize that NEMA may not be able to provide maintenance for some of the subject
standards which industry needs. We are prepared to develop new C57 standards under IEEE
copyright to meet these needs.
Also note that the ASC C57 ballots on the documents listed above which have been worked on
by IEEE Working Groups will be voted as Abstention due to the procedural issue of lack of
indemnification.
These actions will be effective immediately.”
3.5.3 Present roster
The present roster of the IEEE Delegation to ANSI ASC C57 is as follows:
• Matthews, J. W., Baltimore, MD - Chair, IEEE Delegation
• Borst, J. D., Jefferson City, MO
• Hanus, K. S. (alternate), Fort Worth, TX
• Patel, B. K., Birmingham, AL
• Prevost, T. A., St. Johnsbury, VT
• Sim, H. J., Goldsboro, NC
Minutes page - 9
• Smith, H. D., Bluefield, VA
John W. Matthews, Chair
3.6 Committee service awards – J. W. Matthews
John’s full report will be shown in the Committee meeting minutes.
3.7 Chair’s report – B. K. Patel
Bipin presented his report, which will be included in the Committee meeting minutes.
3.8 Vice Chair’s report – H. J. Sim
Jin’s full report will be included in the Committee meeting minutes.
3.9 Secretary’s report – K.S. Hanus
3.9.1 Membership review
Voting Members - Three new members were added at the last meeting in Niagara Falls, Canada as
noted in the Niagara Falls meeting minutes. Also since the Niagara Falls meeting Paul Orehek and Bill
Saxon have indicated they no longer wish to remain members of the committee, therefore their names
have been dropped from the membership.
Following these changes and prior to the addition of new members at this meeting, membership stands
at:
Members - 180
Classifications: Producers - 88
Users - 50
General - 42
Life Members 1
Corresponding Members - 1
Emeritus Members - 21
Poor Attendance Records - The invitation list has been revised by removing approximately 66 guests
with poor attendance record and adding new guests by request. Members who have not attended a
committee meeting since the Spring of 1999 will be contacted to determine their interest in maintaining
membership. The invitation list has approximately 432 names on it at this time.
3.9.2 New member applications
Minutes page - 10
Six new members were approved and welcomed. They are Ken Romano of Georgia Power Company,
William Bartley of Hartford Steam Boiler Inspection and Insurance Co, Philip McClure of Weschler
Instruments, Tony Zhao of Instrument Transformers, William Griesacker of Pennsylvania Transformer
Technology, Dennis Marlow of Prolec GE, Gene Blackburn III – Consultant and John Progar of Ohio
Transformer.
3.9.3 PES directory rosters
Subcommittee chairs are requested to keep the rosters updated as they change constantly. Sometime
this summer the secretary will be asking for updated rosters for the 2002 PES directory.
3.9.4 Meeting minutes
Minutes of the Niagara Falls meeting were reproduced at a cost of $2,077.68 and postage costs were
$ 1,625.75 for 348 mailings, which averages $10.62 per mailing. Note that the net cost of the minutes
varies for each meeting and the $10 portion of the registration fee is a valid nominal fee.
I request Subcommittee Chairs to submit their minutes by May 31, 2001 for this meeting. The submittal
should be an electronic file via e-mail, formatted in Word 97 (or earlier versions) and it would be
appreciated if the minutes are put in the format (numbering, etc.) as shown in the minutes. Please
indicate total attendance count for each subcommittee, working group, and task force meeting in your
minutes. Please do not send me a copy of attendance listing for this attendance count. If someone is
preparing minutes for you please let them know these details about submitting the minutes for
publication.
3.10 IEEE standards activities – Naeem Ahmad
3.10.1 Paper Balloting of Standards
The IEEE Standards Department can assist you in conducting your sponsor level ballot. Following
checklist will assist you in providing us with the complete package of materials. Please mail this package
to your Standards Staff Liaison. Please do not send me draft as attached file.
I. Two copies of the draft on 8-1/2 x 11” paper.
(Copies of the draft are not required for reaffirmation ballot.)

• Each page must be numbered in the proper order.
• Each page must have project # and draft #. ( Example: C57.12.00/D5)
• Each page must have current date.
• Complete IEEE copyright statement with current year on the first page is a must.
• Short IEEE copyright statement with current year in a “footer” on each page is a must.
• Title must be same as on approved PAR and should have the word “Draft” ( Draft: Title)
• Complete figures, tables and annexes at proper place.
Minutes page - 11
• Only metric units are allowed in the normative portion of the standard. Inch-pound data may be
included in footnotes/annexes. Submit necessary exception request to Bruce Barrow of SCC14
(301-493-4374; b.barrow@erols.com).
II. A balloting letter addressed to the balloters explaining the purpose of the ballot. (Refer
to Annex A of the IEEE Standards Companion for sample correspondence. This document is also
available on the Standards home page http://standards.ieee.org. Go to policies and procedures
under Standards Development.)
• The person who will receive the ballot summary upon completion of the ballot will write this
letter. This is usually the Working Group Chair/Standards Coordinator.
• This letter will include address, telephone and fax numbers, and e-mail address.
Upon receipt of the above, The Balloting center will:
1. Conduct an invitation-to-ballot to form your balloting group.
2. Prepare a ballot form, which will be read by optical mark reader.
3. Duplicate your draft, send to the balloters /coordination contacts listed on the PAR.
4. Enter names and Interest Categories into database for all balloters.
5. Mail out the ballot form, cover letter and draft, and record responses.
6. Approximately 10 days before the ballot closing, will provide you with contact information for those
persons who have not returned their ballots.
7. Provide you ballot summary and comments received, after the ballot has closed.
8. Conduct a recirculation ballot when necessary.
3.10.2 Items of interest
• In 2000, for Transformer Committee 16 ballots were completed and as of 3-31-2001 there are
7(one electronic) ballots in process. Also, last year 13(4 failed) C57 ASC ballots were closed
and as of 3-31-2001 there are 5 ballots in process.
• Electronic Balloting is recommended choice now. All members of the balloting group must
have access to web and e-mail address. Please do not send me draft as attached file.
Contact me when your draft is ready and I will provide you instruction and location to post the
draft.
Useful training modules in Microsoft PowerPoint can be obtained at ftp://stdsbbs.ieee.org/training/.

See http://standards.ieee.org/faqs/ltpres.html for more information. Working Group chairmen and
members will find one or more modules of interest.
Minutes page - 12
• A web page Standards-Process-at-a -Glance is available to help WG>>Chairs/Sponsor Chairs on

each step of the standard process and a simple page of links to help them along the process. Go
http://standards.ieee.org/ and select Standards-Process-at-a -Glance under Standards
Development.
• The Standards Board Operations Manual has been revised. It is available in hard copy and at
http://standards.ieee.org/guides/opman/index.html. A revised Standards Companion will be
available in a few months. Working Group chairmen will find helpful information on development of
standards, balloting and submission to the Standards Board in both publications.
• The PAR form and instructions are available, at http://standards.ieee.org/guides/par/index.html. You

can submit html/ text file. A PAR has a four-year life. Extensions are requested by submitting a
“Target Extensions Request Form” at http://standards.ieee.org/guides/par/extension.html.
• Conventions used by NesCom and requirements for PAR submittal and PAR extension requests are
posted at http://standards.ieee.org/guides/par/nesconv99.html
• Standards Home Page http://standards.ieee.org/db/balloting/ can provide you; Balloting Status

Reports and Sign-up to join Balloting Pool.
• Draft standards are submitted to the Standards Review Committee (RevCom) of the Standards
Board. For RevCom conventions see http://standards.ieee.org/board/rev/revconventions.html For
the Guide for Submittal of Proposed Standards see http://standards.ieee.org/guides/revguide.html
Form for Submittal of proposed Standards, http://standards.ieee.org/board/rev/submitform.doc or
http://standards.ieee.org/board/rev/submitform.pdf depending on your choice of a doc or pdf.
• For project Authorization Request (PAR) questions contact Jodi Haasz (732-562-
6367/j.haasz@ieee.org).
• For Editorial review of the draft and questions contact Yvette Ho Sang at 732-562-3814/
y.hosang@ieee.org). It is best to do editorial review in early stage of standard development.
• For Balloting questions contact Stephen Kahofer (732-562-5540/s.kahofer@ieee.org)
• For Review Committee Submittal contact David Ringle (732-562-3806/d.ringle@ieee.org).
3.10.3 IEEE progress on internationalization of standards
• I n 2000 IEEE established an agreement with Telecommunication Standardization Sector of

International Telecommunication Union (ITU-T). This agreement will allow both organizations to
reference other’s documents in their publications. Also, now working groups of both organizations
can exchange information for development of standards. IEEE is in process of establishing a similar
agreement with Radio Communication Sector of International Telecommunication Union (ITU-R).
• In globalization efforts and in cooperation with Region 7, first IEEE Standards National Committee
has been established in Canada. Efforts are under way to establish similar committees in other
countries.
Minutes page - 13
• IEEE/PES Switchgear Committee conducted two panel sessions on standards harmonization with
IEC.
• IEEE/PES/PS Relay Committee hosted several working groups of CIGRE at its regular meetings.
• IEEE/PES Substations Committee initiated a task force to resolve differences between IEC and
IEEE standards for the purpose of developing a truly international HVDC valve test standard.
• IEEE/ IEC Category D liaison established:
a- IEEE/PES Switchgear Committee and IEC SC17A (High voltage switchgear and controlgear).
b- IEEE/PES Switchgear Committee and IEC SC17B (Low voltage switchgear and controlgear).
c- IEEE/PES Surge Protective Devices Committee and SC 37B WG1 (Gas Discharge Tube
(GDT) and Metal Oxide Varistor).
d- IEEE/PES Surge Protective Devices Committee and SC 37B WG2 (Avalanche Breakdown
Diode (ABD) and Thyristor Surge Suppressor (TSS) component matters).
• IEEE/IEC Category D liaison in process:
a- IEEE/PES/ED&PGC/Hydroelectric Power Subcommittee and IEC TC 4 (Hydraulic Turbines

Technical Committee).
b- IEEE SCC 22 (Power Quality) and IEC SC77A (Low Frequency Phenomena).
HOW TO ESTABLISH A CATEGORY D LIAISON BETWEEN IEEE AND IEC?
A- Request originating from IEEE
1- IEEE Committee/Subcommittee Chair will write a letter to the secretary of IEC TC/SC requesting
for a Category D liaison between the two the groups. A copy this letter will be sent to Staff Liaison.
2- Secretary of IEC TC/SC will discuss this request with relevant officers of IEC TC/SC.
3- Secretary of IEC TC/SC put the request on the agenda of the next meeting of IEC Committee of
Action for approval.
4- After the approval is granted, Secretary of IEC TC/SC notifies IEEE (Staff Liaison) and requests
the names of contacts from IEEE.
5- Staff Liaison will request IEEE Committee chair for names of the contact.
6- Staff Liaison will forward these names to the secretary of IEC TC/SC and a copy to Manager,
Board Administration for IEEE-SA Board’s notification.
7- All parties must send a copy of all future correspondence to Staff Liaison.
Minutes page - 14
B- Request originating from IEC
1- Staff Liaison will contact IEEE Committee Chair and forward the request for their response.
2- After discussion in the committee and finding interest, IEEE Committee Chair/designee will reply the
request and send a copy to Secretary of IEC TC/SC to proceed with the process. A copy this
letter will be sent to Staff Liaison.
3- The rest of the process is same as A-3 to A-7.
3.11 Standards subcommittee - T. A. Prevost
3.11.1 Standards and coordination activities
Tom Prevost reviewed his report, which will be included in the Committee meeting minutes.
3.11.2 Documents submitted to the Standards Board
See the status reports starting on page 82.
3.12 Subcommittee Activities - Subcommittee Chairs
3.12.1 Audible Sound and Vibration - Jeewan Puri
No Report
3.12.2 Bushings - F. E. Elliott
No Report.
3.12.3 Dielectric Tests - L. B. Wagenaar
Betrand Poulin has stated he no longer can dedicate the time as chair of the WG on Impulse Testing and
a new chair will be selected in the near future.
Also Loren brought up the issue of the altitude correction factor. As everyone is aware the technical
correctness of the altitude correction factor has been questioned and there is concern the standards
board will not approve any documents containing this until the issue has been resolved. He also stated
the issue not only covers transformer standards but documents in other areas such as switchgear and
insulators or the thermal performance of equipment. He is sending this issue via Art Molden to the High
Voltage Test Technics Committee (IEEE 4) for consideration. It is noted the IEC standards also use
the same factors as the IEEE standards, therefore it will take time to get the issue resolved.
At this time the decision was to continue to send documents out for ballot and address any negatives
that arise on this subject. It was noted that if a negative is received and not resolved the standard will
Minutes page - 15
be recirculated. If after the recirculation an appropriate number of affirmatives still exist the standards
board cannot turn down a document on technical merits. They only look at the procedural issues.
3.12.4 Distribution Transformers – E. Smith
No Report.
3.12.5 Dry-Type Transformers - W. Patterson
No report.
3.12.6 HVDC Converter Transformers & Reactors - W. N. Kennedy/Richard Dudley
As stated in the last adcom meeting the two standards covering smoothing reactors and converter
transformers for HVDC (IEEE Std. 1277-2000 & C57.129-1999) have been published and are now
being used in HVDC projects in progress. As you know these types of projects do not come along too
often and therefore the two year life of these documents will probably need to be extended to allow
these project to progress and allow time for feedback, During this 2-4 year time frame, the
subcommittee will focus on assessing future needs and refinements for the two documents.
3.12.7 Instrument Transformers - J. E. Smith
No report.
3.12.8 Insulating Fluids - F. J. Gryszkiewicz
No report.
3.12.9 Insulation Life – D. W. Platts
No Report.
3.12.10 Performance Characteristics - D. J. Fallon
PCS will probably be setting up a WG to revise IEEE 32 as no one is working on it. In the past C62
had worked on it. Don will work with Tom Prevost to get responsibility for the document transferred
to PCS.
Chuck Murray has new e-mail address which is chrme@edge.net.
3.12.11 Power Transformers - E.G. Hager
No Report
Minutes page - 16
3.12.12 Underground Transformers and Network Protectors – C. Niemann
No Report
3.12.13 Meetings & Planning - Greg Anderson
Greg presented his report, which will be included in the Committee meeting minutes.
3.13 Old Business
Transfer of IEEE 32 to the PCS subcommittee – See Don Fallon’s report in 3.12.10
Discussion of the matter of outside parties wanting to obtain electronic copies of the invitation list of the
committee. Greg has been approached several times about getting this information and has up to this
point resisted. After much discussion it was decided we would not give out electronic copies of the list,
but still continue to send out paper copies of the list with minutes. Also Greg brought up the point a
“Reflector Service” had been set up with IEEE which will allow persons to send out mass e-mails (for
non-commercial needs) when needed without having to have the e-mail list. The service is voluntary
with users required to sign up for it but it provides an anonymous way for e-mails to be sent out.
Revision of the O&P manual will need to be done by the end of the year.
Peter Balma commented he has not received many comments from his presentation he made at the
Niagara Falls ADCOM meeting. He will continue to push the items he described in his presentation.
3.14 New Business
No new business was presented.
3.15 Adjournment
Bipin adjourned the meeting at 5:20 p.m.
Respectfully submitted,
K. S. Hanus, Secretary
Minutes page - 17
AdSub Attachment 3.4
IEEE/PES Transformers Committee Meeting Locations
Year Spring Fall Committee Chair

2002 Vancouver, BC, Canada Oklahoma City, OK Sim
2001 Amsterdam, The Netherlands Orlando, FL Patel
2000 Nashville, TN Niagara Falls, ON, Canada Patel
1999 New Orleans, LA Monterey, Mexico Matthews
1998 Little Rock, AR Guanajuato, Mexico Matthews
1997 Graz, Austria (summer) St. Louis, MO Binder
1996 San Francisco, CA Burlington, VT Binder
1995 Kansas City, MO Boston, MA Harlow
1994 Dallas, TX Milwaukee, WI Harlow
1993 Portland, OR St. Petersburg, FL Borst
1992 Birmingham, AL Cleveland, OH Borst
1991 Phoenix, AZ Baltimore, MD Veitch
1990 Denver, CO Montreal, PQ, Canada Veitch
1989 Chicago, IL Charlotte, NC Veitch
1988 Washington, DC Long Beach, CA Compton
1987 Ft. Lauderdale, FL New Orleans, LA Compton
1986 Little Rock, AR Pittsburgh, PA Yannucci
1985 St. Louis, MO Toronto, ON, Canada Yannucci
1984 Vancouver, BC, Canada Boston, MA Savio
1983 Atlanta, GA Detroit, MI Savio
1982 Los Angeles, CA Philadelphia, PA McNutt
1981 Portland, OR Phoenix, AZ McNutt
1980 Williamsburg, VA Milwaukee, WI Bonucchi
1979 San Diego, CA Houston, TX Bonucchi
1978 Miami, FL Chattanooga, TN Bennon
1977 Charlotte, NC Montreal, PQ, Canada Bennon
1976 New Orleans, LA San Francisco, CA Honey
1975 Lakeland, FL Denver, CO Honey
1974 Pittsburgh, PA Scottsdale, AZ Alexander
Minutes page - 18
4.0 Editor’s Report – M. Christini
I'd like to give a brief summary of the technical paper review activities since the Niagara Falls meeting,
as well as take this opportunity to issue an invitation to each of you.
As many of you know, the review of all IEEE papers dealing with transformers is assigned to the IEEE
Transformers Committee. Potential papers are divided into two categories: Proceedings Papers and
Transactions Papers. The Vice-Chairman of the Transformers Committee serves as editor for all
proceedings papers while I presently serve as editor for all Transactions Papers. Transactions papers
are required to be technically innovative, visionary, and should advance the state of the industry.
Authoritative papers giving a succinct account of an entire field may also be accepted. Commercial
papers, without sufficient technical detail and which only emphasize a company's capabilities, must be
rejected.
Since January of this year, I have received a total of 24 papers. At this time, 4 reviews have been
completed and 12 are underway, thanks to 40 different reviewers. Reviewers are currently needed for
8 new papers dealing with the following topics: fault analysis, harmonics, transformer connections, oil
analysis, symmetrical component modeling, autotransformer design, core hysteresis modeling, and
thermal overloading. For each paper, 4 reviewers are needed.
The review process requires that each reviewer complete 2 tasks which should take no more than 1 or
2 hours:
1. Each reviewer must fill out a "check box" review form that essentially recommends OR rejects a
paper.
2. Each reviewer must prepare a short statement (a few paragraphs long) supporting this position.
This statement is given anonymously to the authors of the paper.
I would like to invite and encourage each of you to review Transaction Papers. Please note that you do
not need to be a member of the Transformer Committee to be a reviewer. I am preparing a pool of
reviewers by specialty and would welcome any of you to join this list. As a participant in the
Transformers Committee, you are expected to help with this effort whenever possible.
In closing, the IEEE Power Engineering Society has an obligation to provide papers of the highest
professional quality for permanent reference value. Being a reviewer is an opportunity for each of you
to help guide the advancement of the transformer industry. This will help you to remain abreast with the
latest technical developments in the field, and may even allow you to be the first to see your competitors
latest innovations.
Minutes page - 19
5.0 Vice Chair’s Report – H. J. Sim
The vice chair covered the main points of his report shown in full length below.
5.1 PES Technical Council Committees
The following are reports on activities of PES Committees on which the Vice Chair serves as
Committee representative. All of the meetings reported were held at the 2001 Winter Meeting in
Columbus, OH on January 28 – February 1, 2001.
5.1.1 Technical sessions
Here are the high points of the discussions held and the report presented at the meeting:
Power Engineering Review will continue to publish Technical Committee promotional articles.
The emphasis should be on present and future activities. The length of the article is at the discretion of
the author. It may include: technical information, announcement of new working groups and task forces,
membership information, and recruitment’s for new members. Each committee will submit their material
by their due date as scheduled.
Professor J. Jardini, General Chair, Transmission and Distribution Conference – Latin America
2002 gave a short presentation on the upcoming meeting to be held in Sao Paulo, Brazil, March 18-22,
2002. He said that costs to attend this conference were comparable to those conferences held in the
United States – ex. Airfare $1000, Hotel $100. He included in his presentation a description of the
technical program and exhibitions that are planned. Professor Jardini ended his presentation with a
request for corporate support of the meeting.
Web site: www.ieee.org.br/t-d2002lamerica
John Paserba, TPC – Winter Meeting presented the proposed theme and tracks for WM2002
as below.
THEME; Embracing the Power of Change
TRACKS;
TRACK 1: POLICY AND MARKETS, covering such topics as:
• The latest on RTOs and ITCs
• “The State of the Union” of ISOs
• One Year Later: Lessons Learned From the California Experience
• Re-Evaluation of the Restructuring Process
• Electric Power Market Design and Participant's Strategy In Terms of Market Segments (Energy
Market, Ancillary Service Market and Transmission Markets) and Market Timelines (Spot
Market, Forward Market and Bilateral Market)
Minutes page - 20
• Pricing Strategies, including Bundled Services
• System Operation Under Reduced Generation Availability
• The Technical Ramifications Reverse Auctions
• Policies and Requirements for Wide Area Stability Control
TRACK 2: EMERGING TECHNOLOGIES, covering such topics as:
• Power Electronics Including Flexible AC Transmission (FACTS)
• Alternative Energy Sources
• Superconductivity
• Dispersed Generation
• Surge Protection with Distributed Generation
TRACK 3: ROLE OF INFORMATION TECHNOLOGY AND OTHER RESOURCES IN

THE FUTURE, covering such topics as
• Communications
• Mobile Computing
• Software Tools to Reduce Complexities of Applications, Testing, and Analysis
• Transaction Management and Risk Management Software
• Wide Area Stability Control Integration and Applications
• Enterprise Integration
• Teaching and Mentoring for Young Engineers and Technicians
TRACK 4: RELIABILITY AND STANDARDS, covering such topics as:
• IEC Standard Efforts to Standardize Software Interfaces and Communications Protocols
• Power Quality Standards and Measurements
• Standards/Needs for Wide Area Stability Control
• Reliability of Cable Systems
• Reliability of Transmission Lines
• Reliability of Power System Special Protection Schemes
• Whole House Protection From Low Voltage Protectors
Minutes page - 21
5.0 Vice Chair’s report (cont’d)
• Migration Concepts to Move Toward Non-Standard Instrument Transformers
Minutes page - 22
Mel Olken, Susan Sacks, and Marie D’Alessio (All from PES Staff) presented some information on
PES Technical paper, publications, and meetings. Highlights of this presentation are:
Transactions Papers
• Flightdeck software keeps track of all process and provide status of any paper.
• In 2000, a total of 823papers sent for reviews and only 102 decisions have been made.
• Upgraded on-line services. (Manuscript Central)
• New reviewer recruitment. (200+ as of January 2001) Sign up if you wish to volunteer for this
important process.
Proceedings Papers
• 2001 is the third year since PES started using this classification of papers.
• The format for 2001 Summer meeting and T&D Conference will change to electronic.
Author’s Kit
• Updated regularly. Visit the PES website and get the latest kit.
A short “brain storming” session was held to identify additional ways to improve technical programs.
The following ideas were presented:
• Ali Keyhani described a method of creating a personal conference proceedings prior to

attending the meeting. This service is offered for the International Conference On Systems
Sciences by IEEE Computer Society.
• Several comments were received on the lack of desire for poster sessions.
• Requests were made to notify TCPC’s of newly accepted transactions papers so that these
papers could be considered for future technical programs.
• A proposal to revise the meeting structure to include one “all-in-one” poster session in the
evening that did not conflict with any other event. A meal could be served that would
encourage attendance. This suggestion receive a large number of positive comments.
• A technology fair, similar to something that EPRI conducts at their meetings, was suggested.
• Presentations similar to those presented at CIGRE meetings was also suggested.
5.1.2 Organization and Procedures Committee
5.1.2.1 Technical Committee Activity Reports
No major discussion during the individual TC report.
Minutes page - 23
5.1.2.2 Revision of the Technical Council Organization and Procedures Manual
Our committee O&P Manual has been updated and distributed based on the current revision of the TC
O&P Manual in November 2000.
5.1.2.3 Two new Committees
We reviewed proposals to form two new committees with the following scopes and approved both of
them.
Scope for Emerging Technologies Committee
Treatment of all matters in which the dominant factor is the research, development and application of
emerging technologies for the Power Industry. In this context, conduct various symposia related to such
matters. Initiate Standards, Guides or Recommended Practices as appropriate. Be attentive as to
inclusion of additional technologies into the scope. Act as a focusing entity to assure complete coverage
of all subjects within PES purview. Act as coordinating and consolidating body with other PES
Committees, IEEE Societies or recognized International Bodies as they may have a particular interest in
the matters. Actively seek a permanent organizational home for an area selected for development by
the Committee once complete coverage is assured and coordination links to other areas defined.
By its very nature the scope must be flexible as to topics. Included at the present is treatment of the
following:
v Power Electronics including Flexible AC Transmission (FACTS)
v Alternative Energy Sources (Wind, photovoltaic, etc.)
v Power system Applications Utilizing Superconductivity
v Dispersed Generation
v Power Quality Measurements and Standards
Scope for Energy Policy and Markets Committee
Treatment of all matters in which the dominant factor is the commercial aspects of the Electric Power
Industry. Conduct symposia as appropriate related to such matters. Act as the PES coordinating body
with regulatory agencies, reliability organizations, generating companies, regional transmission
organizations, independent systems operators, trade associations, other professional societies, and IEEE
USA as they may have a particular interest in these matters. Maintain a high level of cognizance of
emerging developments so as to be able to speak knowledgeably and authoritatively when required.
v Utility Deregulation/Restructuring
Minutes page - 24
v Siting of Electrical Infrastructure
v Mergers and Acquisitions
v Energy Policy
v Energy Efficiency
v Tariff Issues
v Retail Access
v Bundled Services
v Productivity
v System Reliability
v Information Technologies
v Electromagnetic Fields
5.2 Technical Paper Reviews

5.2.1 Technical Paper Review Summary
Our committee’s editor Mark Christini reported the activity of his first three months on the job. We
received 13 transaction papers and review for 12 of them are under way and 1 is complete.
5.2.2 Technical Paper Session at 2001 Summer Meeting

Two transformer sessions are planned for the Vancouver, BC meeting, July 15 – 19, 2001. There are
ten proceedings papers.
5.2.3 Technical Paper Session at PES T&D Conference

We will have two paper sessions for about 10 proceedings papers and one panel session on “Coating
radiators for corrosion resistance: Galvanized v.s. Painted” during the IEEE/PES T&D Conference in
Atlanta, GA, October 28 – November 2, 2001.
H.J.Sim, Vice Chair
Minutes page - 25
6.0 Transformer Standards - T. A. Prevost
The standards subcommittee met on Wednesday, April 11 2001 with 11 members and 21 guests in
attendance. Following introductions the minutes from the October 17th, 2000 meeting in Niagara Falls
were approved as written.
6.1 Chairs Remarks:
The chairman discussed the advantages of having transformer committee members get an IEEE alias for
their e-mail. This would be a point of direction for IEEE e-mail to be routed to the subscriber. The
advantage is that a change of e-mail address would be transparent. The url for obtaining an IEEE alias
is:
http://eleccomm.ieee.org/personal-alias.shtml
We also discussed the use of e-mail reflectors, which can also be obtained through IEEE. A reflector is
a list of names, which can be compiled into one list. A person sending an e-mail to say the transformer
committee membership need only to send to the reflector. The receiver would only see the reflector site
in his e-mail, not the entire membership list. A reminder- This is not to be used for commercial
purposes.
Reflector sites can also be set up for working groups. IF anyone is interested in obtaining a reflector site
for their working group they should contact George Vaillencourt. If you would like to subscribe to the
transformer committee reflector you can add your e-mail address through the transformer committee
web page at http://www.transformerscommittee.org
The chairman also discussed the status of electronic balloting. Last year we decided to try a test case
with PC57.12.59 “Guide for dry-type transformer through-fault current duration”. This standard
project is in the balloting process and we have received no feedback of problems. The invitation to
ballot was done through the mail. If someone wanted to participate on the ballot they were required to
return the invitation with their correct e-mail address on the form. IEEE has gone to electronic
invitations. This could cause a problem if the ballot pool database is not accurate. To do this the next
transformer committee ballot, which will be PC57.12.01, will include a letter with the invitation
requesting that the invitation be returned even if that individual does not want to participate on the ballot
with their up to date e-mail address. In this way we can start with an accurate ballot pool for future
electronic invitations to ballot. Of course the use of IEEE aliases for e-mail addresses would simplify
this.
6.2 Old business:
C57.12.00 and C57.12.90 Subhash Tuli
Both C57.12.00 and 12.90 will be sent out for ballot in July of this year. Subhash has several proposals
for revisions to the documents and expects more from the various working groups, which oversee these
standards in the subcommittees. This keeps us on our planned two-year cycle. A suggestion was made
to Subhash to highlight any changes made within the document to assist the reviewer of the document.
Minutes page - 26
We discussed the issue of altitude correction. Loren Wagenaar indicated that he is looking into this and
will contact IEEE 4.
C57.12.70 “Terminal markings and connections for distribution and power transformers” This standard
has been revised and approved. It should be published this year.
C57.12.80 “Terminology for power & distribution transformers” This standard is in the revision
process. A recirculation ballot has been completed with two negatives still outstanding. These negatives
involve definitions for insulating fluids. Tom Traub is working to resolve this.
TF Guide for Metrification of Transformer Standards - Dudley Galloway
A draft of this guide was circulated to task force members late last year. Several comments were
returned and these are being incorporated into the draft. The task force did not meet at this meeting. It is
expected that the guide will be completed prior to the next meeting in Orlando. Naeem Ahmad, our staff
liaison, suggested that the task force contact Mr. Bruce Barrows, the chairman of SCC14, for
comments as well. His e-mail address is: b.barrows@erols.com
6.3 New Business:
“Phonebook” of transformer standards – Peter Balma asked when the phonebook will be revised and
distributed and if he can get it on CD-ROM. Naeem replied that it cannot be obtained on CD-ROM .
Terry deCourcelle from IEEE standards department will check on this and the publication status and
inform the chairman.
Status of C57.21 - Don Fallon requested that Naeem inform him of the status of C57.21 reaffirmation.
C57.12.90 & PC57.133 Short Circuit Guide - Subhash inquired as to whether he should continue with
C57.12.90 as is without the short circuit guide, which was removed from 12.90 and started as a stand-
alone guide. The chairman updated the group on the status of PC57.133. This draft guide is in the ballot
process. It is hoped that the guide will be approved this year and published shortly after.
The meeting adjourned at 3:54 PM
Minutes page - 27
7.0 Recognition and awards – J. W. Matthews
7.1 Certificates of appreciation
Transformers Committee Certificates of Appreciation have been obtained for the following persons:
Name Service Rendered
Ernst Hanique Amsterdam Meeting Host, April 2001
Linden W. Pierce Chair, Insulation Life Subcommittee
Pritpal Singh Chair, Working Group on Performance Characteristics and Dimensions

for Outdoor Apparatus Bushings
Robert C. Degeneff Technical Editor, IEEE/PES Transformers Committee
All of these awards, except for Linden Pierce’s, will be presented at the main Committee meeting on
April 12, 2001. Linden’s award will be presented at the Committee meeting in Orlando, FL, USA.
7.2 Nominations for IEEE, PES, and Technical Council awards
Jim Harlow has prepared documentation to nominate the tutorial paper "Sound Level Measurements in
Transformers" by Jeewan Puri, Jan Declercq and Wim Van der Veken for the IEEE Donald G. Fink
Prize Award. Each year the PES has the opportunity to nominate a paper for the this very prestigious
award at the IEEE level (not PES) for the "most outstanding survey, review or tutorial paper .....".
A chart of the PES and IEEE awards available to PES Technical Committees is attached.
7.3 IEEE Standards Association working group chair awards
I have received several inquiries regarding Working Group Chair Awards recently. The following
excerpt from the IEEE Standards Association Operations Manual should help explain how this Award
is presented. Please pass this information to all Working Group Chairs. Note that the Awards
Subcommittee Chair is not involved with this presentation.
“5.2.1.2 Working Group Chair Award
This award, acknowledging important contributors to the development of a standard, is

presented to the chair or co-chairs and may be presented to the designated vice chair or
technical editor of the working group for a standard, and/or the special editor of a collection.
The award is issued automatically upon publication of the document and consists of a laminated
wooden plaque displaying the cover of the standard and the name of the person.”
Minutes page - 28
Minutes page - 29
8.0 Meeting Planning Subcommittee -- G. W. Anderson
The Meetings Planning SC holds an open meeting at each TC meeting to plan future meetings and assist
future hosts by education and mixing of ideas and lessons-learned. The meeting is attended by at least
the SC Chair, the present meeting host, future hosts, and hosts from past meetings. Others interested in
hosting a future meeting, or assisting with meeting planning are encouraged to attend.
The Meeting Planning Subcommittee meeting began at 1:30 p.m., Wednesday, April 11, 2001 in the
Hilton Amsterdam Hotel. Fifteen (15) people were in attendance. Greg Anderson, SC Chair
facilitated. The meeting began with introductions by the attendees.
8.1 Committee finances
Committee funds are presently (as of February 1) $18,213.08. It is expected that approximately
$6,500 of these funds will be used to subside the expenses (losses) of the Amsterdam meeting.
8.2 Past & present meetings
8.2.1 Past meeting - Niagara Falls, Ontario, Canada
Roger Hayes and the VA-Tech/FPT Host Team did an excellent job planning and implementing the
previous meeting. Special thanks go to Ms. Sherry Baker and her team at Events Extraordinaire, a
local events planning company, for their assistance to the Host Team. Roger empathized that Sherry's
team provided notable value to the event and allowed him and others at FTP to "concentrate on being a
host" and selling transformers. Roger encouraged future meeting hosts to consider using a professional
local meeting planner.
8.2.2 Present meeting - Amsterdam, The Netherlands
Ernst Hanique and his SMIT Host Team were complimented on a very worthwhile and productive
meeting despite the overseas location. The attendance was good despite the lack of attendance of
those working on Distribution Subcommittee activities. Ernst summarized preliminary attendance counts
(see the attachment at the end of the minutes). The facilities of the Hilton Amsterdam were excellent.
SMIT hosted a relaxing and scenic trip to Nijmegen on a train pulled by a classic steam-train for a tour
of their factory and dinner in a medieval castle. Companion tours included excursion to Province of
West Friesland and an excursion to Gouda & Schoonhoven. The speaker at the Tuesday luncheon was
Mr. Menno de Vries from KEMA Laboratories. The Wednesday evening event consisted of a dinner
cruise on the luxury saloon steamer, "Prins van Oranje". After the meeting KEMA Laboratories hosted
a tour of their test facilities in Arnhem.
8.3 Future meetings
Minutes page - 30
8.0 Meetings Planning Sucommittee (cont’d)
8.3.1 Summary
The following dates, locations and respective hosts for future meetings were reviewed.
• October 14-18, 2001 -- Orlando, Florida ... Joe Watson (FPC) and Jim Hudock (Ohio
Transformer)
• April 14-18, 2002 -- Vancouver, B.C. … Mike Lau (BC Hydro)
• October 20-24, 2002 -- Oklahoma City, Oklahoma ... Joe Garza (Southwest Electric)
• Spring 2003 -- open for US meeting; contact Greg Anderson for if interested in hosting a
meeting
• Fall 2003 -- open for US meeting
Possible locations for future meetings include: New York City, Minneapolis, Biloxi, Montreal,
Charlotte/Raleigh, and Edinburgh, Scotland (in 2005 or 2006) to name a few.
8.3.2 Upcoming meeting -- Orlando, Florida
Joe Watson has reserved meeting rooms and 275 guests rooms at the Omni Rosen Hotel (also known
as the Rosen Center) in Orlando, Florida. Room rate will be US$165 (without taxes), single or double
occupancy. The meeting will be the first to incorporate the "Sunday through Thursday" schedule. The
schedule will consist of individual "break-out" meetings all day Monday, Tuesday, and Wednesday, with
the "full Committee meeting on Thursday morning" (see more details later). Ohio Transformers will host
a tour of their Bradenton Plant. Although additional planning is in progress, this meeting will be
promoted as a family meeting and attendees are encouraged to bring their children. Joe Watson can be
reached at (561) 691-2206 or joe_watson@fpl.com and Jim Hudock can be reached at (407) 854-
8130 or jhudock@ohiotransformer.com.
8.3.3 Upcoming meeting -- Vancouver, B.C.
Meeting rooms and 250 guest rooms have been reserved at the Westin Bayshore Resort & Marina
adjacent to Stanley Park. Room rate will be CAN$180 (approx. US$130, without taxes), single or
double occupancy. Mike Lau can be reached at (604) 528-3201 or mike.lau@bchydro.bc.ca.
8.3.4 Upcoming meeting -- Oklahoma City, Oklahoma
Joe Garza presented a brief informative slide presentation on Oklahoma City and what it can offer for a
meeting facilities and activities. Joe is working closing with the local visitors & conference bureau and is
close to choosing a host hotel.
8.4 New business
8.4.1 TC Web-Page
Continued thanks to Georges Vaillancourt for maintaining the web-site. The site contains complete
minutes from recent past meetings and information about upcoming meetings.
Minutes page - 31
Greg has developed a useful "Industry Calendar", also available on the TC web-site, that lists upcoming
"transformer-related meetings, through year 2010. This calendar is helpful in planning future Committee
meetings and avoiding conflicting meeting dates.
A new working group called "WG Web-page Development" will be developed and will have its first
meeting in Orlando. The new WG will further develop the TC web-site, encourage productive use of
the site (bulletin boards, etc), determine "web content", and develop procedures for adding material to
the web-site. Georges has volunteered to co-chair the WG. A representative from each subcommittee
is encouraged to attend the meeting. Additionally, a "WG for Educational Development" is being
investigated to promote "educational content" and coordinate "presentations and tutorials. The
proposed WG would attempt to certify certain tutorials for continuing education units (CEUs) for
professional development.
8.4.2 Meeting schedule
Again, the new longer meeting schedule was discussed. The new schedule will begin at the Orlando
meeting and will begin Sunday evening with the usual Hospitality Reception. Individual "break-out
meetings" will begin on Monday morning and will continue through Wednesday afternoon. The "Full
Committee Meeting" will be Thursday morning. The following criteria will be used for the longer
schedule.
• Only one timeslot for each SC meeting.
• No more than two timeslots for each WG or TC activity.
• A target maximum of 5-6 meetings per timeslot.
Greg has already started developing the "Orlando Schedule" and has begun working with SC Chairs on
desired meeting order. The longer schedule will allow a couple of time slots dedicated specifically for
educational content (tutorials and presentations).
8.4.3 E-mail reflector service
A new "e-mail reflector service" has been created to help disseminate non-commercial Committee
information. Advance information about future meetings will only be distributed with this service.
Therefore, to avoid missing helpful information, everyone should subscribe to the service. A link to
subscribe to the service is provided in the web-site.
Additionally, it is encouraged that everyone create an "e-mail alias" address to help eliminate confusion
and allow people to maintain proper contact if they switch employers. An alias can be created by
accessing the IEEE website (www.ieee.org) and typing "alias" into the search window or by directly
accessing the web-page at http://elecomm.ieee.org/personal-alias.html.
8.4.4 Mailing of committee meeting minutes
It was decided at the Administrative Subcommittee meeting at the Fall 2000 meeting that meeting
minutes would now be "snail-mailed" only to:
Minutes page - 32
• Committee Members
• Attendees of that associated meeting
This new mailing policy will significantly reduce the cost to print and mailing minutes. We hope, with the
increased use of the web-site, to someday stop mailing the traditional paper document and allowing
interested parties to download the minutes from the web or perhaps order the document on CD.
8.4.5 Miscellaneous
Additional topics were discussed:
Create an "anniversary CD" that will contain an assembly of documents and meeting minutes from the
past 5-10 years. The CD could perhaps be presented to all Committee Members and made available
to meeting guests and other interested individuals.
Continue to improve the registration process. Perhaps automatically confirm that those who register as
IEEE members are indeed due-paying members and confirm life and emeritus memberships. Perhaps
add the ability to make hotel reservations on-line while registering for a meeting.
Coordinating and consolidating databases. Presently there are no less than 5 databases (TC
membership list maintained by SC Secretary), each meeting registration list, ballot list, SC & WG
membership lists maintained by chairs, and the IEEE membership list (self-maintainable).
Sell "products" such as meeting standards (C57 Collection, etc) at upcoming meetings. Develop a
"golf-type" shirt with a Committee logo and sell at the meetings.
Include IEEE membership and Committee membership applications in invitation packages mailed before
each meeting or welcome packages distributed during each meeting.
Investigate IEEE Conference Management Services providing additional services such as maintaining
our membership list, tracking meeting attendance, including attendance at large break-out meetings
perhaps using bar-codes on name-badges.
It was also noted that IEEE has a "full-service" travel agency that can provide low airfares, car rental,
etc. IEEE Global Travel Services can be reached at (800) 879-4333 or at www.ieeetravelonline.org.
The meeting was adjourned.
Minutes page - 33
9.0 Reports of technical subcommittees
The following reports are those of the technical subcommittees of the Transformers Committee. In most
cases they are the complete minutes of meetings held earlier and they are identified as minutes.
Secretary’s Note: The subcommittee reports have been edited to the format of the IEEE Style Manual.
No changes have been made to the content of these reports except for typographical errors and
obvious improvements (removal of attendance lists and general items covered elsewhere).
9.1 Dry-Type Transformers - W. F. Patterson, Chair
9.1.1 Introductions and Signing of Attendance Forms - W. Patterson
Meeting began at 11:00 am in Ballroom A of the Hilton Hotel – Amsterdam. There were 14 members
and 6 guests present.
9.1.2 Approval of Minutes - W. Patterson
The minutes of the Niagara Falls meeting were approved as written
9.1.3 Reports of the Working Groups
9.1.3.1 WG Dry Type Thru-fault Current C57.12.59 - P. Payne
No meeting was held at the session. Paulette Payne reported on the status of the ballot.
About 145 ballots sent out. There was 1 short of the 75% return. Extended 1 week and was then
valid. There was an error in one of the figure may require a re-ballot. The chair will prepare a report to
the WG on the disposition.
The members had no problems with the e-ballot process. The question was asked if there was any
problem with e-mail attachments. None were noted at this time by the WG Chair.
Recommendation for IEEE on future eBallots:
1. Could electronic ballot automatically trigger an e-mail reminder to non-responders?
2. Could repeated non-responders to ballots be automatically removed from the balloting pool?
9.1.3.2 WG Dry Type General Requirements C57.12.01 - J. Sullivan
The meeting of C57.12.01 was held at 3:00 PM on April 10, 2001 in the Orange room of the Hilton
Amsterdam hotel.
After introductions of members and guests present, the minutes of the Niagara Falls meeting were
approved.
Eleven members and three guests were present.
The first order of business was presented. The chairman, Mr. Sullivan reported that the revised
standard had been submitted to IEEE Headquarters for balloting. The ballot will be processed
Minutes page - 34
9.0 Reports of Technical Subcommittees (cont’d)
electronically.
The Chairman reported that one table was added, IEC cooling classes were added to Table 2. The
rest of the tables were renumbered.
A suggestion was made by Anthony Jonnatti to add an annex to this standard that would provide both
metric and English equivalents. This table would apply to the units in this standard only. A motion was
made presented to the group and approved. An attempt will be made to add the annex to this revision.
If it cannot be added at this time, it will be placed in the next revision. Mike Mitelman will submit a list
of equivalent units for discussion. Wes Patterson will contribute.
The chairman asked for any old business. None was presented.
With no new business the meeting was adjourned at 3:35 PM.
9.1.3.3 WG Dry Type Reactors - R. Dudley
On April 10, 2001 the Dry Type Reactor W.G. met in the Orange 4/6 Meeting Room of the
Amsterdam Hilton with 8 members and 5 guests present.
The following are the highlights of the meeting.
1. The attendance list was circulated.
2. The minutes of the Niagara Falls meeting were approved.
3. The recirculation ballot for IEEE C57.16 was reviewed. Per the latest information from IEEE
the ballot was successful re the required responders. The only possible issue involves the
altitude correction for dielectric strength. The issue was first raised in the Switchgear
Committee. The Switchgear Committee are considering an approach where the correction is
cumulative from sea level but the cumulative correction is only first applied after 1000 meters vs.
the current practice where the correction starts at and is only applied after 1000 meters. After a
great deal of discussion the consensus was that the current approach is valid since standard
requirements are that equipment be capable of operation at altitudes up to 1000 meters. The
implication is that the capability to operate up to altitudes of 1000 meters is built in and therefore
no step correction is required at 1000 meters. Other comments included.
- The standard service requirements in C57.16, C57.12 and other IEEE standards for
transformers etc. have as a standard service requirement operation at altitudes < 1000
meters.
- Peter Balma stated that in a survey he has made of switchgear standards the current
altitude correction methodology for dielectric strength has been in place since the 1930's
and 1940's.
- This issue of altitude correction for dielectric strength is on the agenda of the Dielectric
Tests S.C. and will probably be passed to the W.G. responsible for IEEE Std. 4.
Minutes page - 35
In summary the consensus of the Dry Type Reactor W.G. is that the altitude correction for
dielectric strength should remain as is in C57.16 and other standards under the jurisdiction of
the Transformers Committee until a recommendation is made by the Dielectric Tests S.C.
Consideration should be given to the interpretation presented at the beginning of this highlight.
4. The first draft of an annex for C57.21 on thyristor-controlled reactors was discussed with a
focus on components submitted by Pierre Riffon. Pierre's comments were supplied to W.G.
members attending the W.G. meeting and will be supplied to all W.G. members when the
minutes are mailed. The highlights are:
(i) A3.2: TCRs are split to limit di/dt.
(ii) A4.1: Editorial comment accepted.
(iii) A4.3: An overcurrent in the TCRs can also be caused by a misfiring of the thyristor
valve.
(iv) A4.4: Text must be written for this section. Rated losses must be related to rated
current and operating point. Lars Erik Juhlin will draft the text; including a separate
definition for rated current (A2.3). Rated current, rated losses and operating point are
related to system design and should be specified by the system designer. Pierre Riffon
will produce a typical graph of current (fundamental plus harmonics) vs. firing angle.
(v) A5.1: The turn to turn test is one acceptable alternative to the lightning impulse test if
the time to the first voltage crest is less than 3 µsec.
(vi) A5.4.3: The reference to nominal inductance will be eliminated. The effective
resistance will be measured at rated harmonic frequencies. The losses at harmonics will
be obtained by measurement.
(vii) A5.4.4 and A.5.4.5: Context is okay based on changes to 5.1.
(viii) A5.5.1: The temperature rise test should be carried out at rated losses if they are the
maximum losses. A definition of rated losses and rated current is required. Clamping
structure losses should be included in the winding loss for the temperature rise test. It is
important to determine the temperature rise of the reactor terminals during the
temperature rise test.
(ix) A5.5.2: Definition of rated current is required.
(x) A.5.6: Although sound level at the "fence line" may be important for an SVC installation
this is a system design decision. The TCR specification should state an acceptable value
for the reactor. Information on sound power measurement should be included based on
that in the SMR std.; IEEE 1297. A statement should be added that sound intensity is
Minutes page - 36
an acceptable measurement methodology. Sound should be measured at a number of

harmonic currents to demonstrate the validity of the manufacturers calculation
methodology.
(xi) A7.1: PR comment accepted.
(xii) A8.1: PR comment accepted.
The Chairman stated that he would prepare Draft 2 of the ANNEX on TCRs based on inputs discussed
and circulate it prior to the next W.G. meeting. The meeting adjourned at 10:45 a.m.
9.1.3.4 WG Dry Type Test Code C57.12.91 - D. Barnard
The new standard has been published. The WG discussed the following. A-weighted sound levels to
follow the liquid-filled WG disposition. Cooling Class designations to use the IEC designations bringing
the document in alignment with C57.21.01. These changes will be included in the next revision.
A current issue of C57.123 will be sent to the WG for review.
The working group met at the appointed time with 8 members and 4 guests present. After introductions
the Chairman asked for comments and/or corrections to the minutes from the previous meeting in
Niagara Falls, Ontario, Canada, October 17, 2000. There being no comments a motion was made and
seconded to accept the minutes as written. The motioned passed.
Old business
1. The Chairman announced that the IEEE Standards Board had approved the standard for
publication with the date of 2001. A copy of the standard was shown to the working group. It
will have a life of 5 years at which time it must be revised or reaffirmed.
2. Jeewan Puri withdrew his negative ballot concerning average A-weighted sound level
measurements as long as the working group agreed to consider his recommended changes prior
to the next revision. Mr. Puri was not present at this meeting. The working group will consider
adopting the test methods of C57.12.90, when it is published.
3. Subhash Tuli comments on adopting IEC cooling class designations will be addressed in the
next revision. S. Tuli was not present at the meeting.
4. Wayne Hansen’s recommended changes for clause 10.8 on insulation power factor testing will
be addressed in the next revision of the standard. Wayne promised to provide wording for the
change. W. Hansen was not present at the meeting.
5. Nigel McQuin’s comments on resistance measurements, dielectric tests and temperature testing
will be addressed in the next revision of the standard. N. McQuin will provide wording for the
proposed changes. N. McQuin was absent from the meeting.
New business
Minutes page - 37
1. C57.123/D1.7 is a guide for transformer loss measurements. The chairman will send copies to
members via email for the purpose of reviewing the document. There may be some changes to
be recommended to the test code so insure no conflicts exist between the two documents.
Members were asked to read the draft and be prepared to comment at the next meeting.
A motion was made, seconded and approved to adjourn the meeting at 8:30 am.
9.1.3.5 WG Thermal Evaluation C57.12.56,C57.12.60 - R. Provost
This WG meeting was cancelled. At the Orlando Meeting the WG will discuss the combination of the 2
standards.
Bill Simpson indicated during his report on IEC TC-98 that this was an excellent opportunity to
introduce as an IEC standard – probably with IEC TC-98.
9.1.4 Liaison Report IEC TC 98 - R.W.Simpson
IEC TC 98 Bill Simpson gave a report on activities. Three standards have been published IEC 60505
Evaluation and Qualification of Electrical Insulation Systems, IEC 61857-Procedures for Thermal
Evaluation – Part 21: Specific Requirements for General Purpose Model – Wire Wound Applications,
and IEC 61858 Thermal Evaluation of Modifications to an Established Wire-Wound EIS. Bill
proposes use of C57.12.56 and C57.12.60 as models for IEC document on test procedures. IEC
62114 Thermal Classification of EIS will be circulated as an FDIS.
9.1.5 Chairman’s Remarks and Announcements - W. Patterson
• Future Meetings
F01 Orlando Oct 14-18
S02 Vancouver Apr 14-18
F02 Oklahoma City Oct 20 –24 or Nov 03 – 07
• Problem: participation of users

Need more users
Increase use of tutorials with the purpose of educating to improve user participation.
Reduce number of PES meetings
• Need Technical Papers for Winter Meeting 2002

Contact Jim Harlow
see PES web page for rules / dates
• Tom Prevost (Jody Hass of IEEE) needs to know what standards are used internationally and
where
o List of IEEE standards adapted by IEC
o List of what countries are using IEEE standards
Minutes page - 38
• Electronic balloting – will move to this in the future IEEE members need to keep their personal
info updated
o Maintenance of Personal Data on IEEE
• These services are only available to IEEE members
• Go to www.ieee.org
• Follow link Change Contact Info. [http://www.ieee.org/membership/coa.html] to update

personal data
• Follow link Personal Email Alias [http://eleccomm.ieee.org/personal-aliases.shtml]

to setup email alias
o This can also be done from the “Change Contact Info” link
• ANSI Committee documents brought into IEEE for maintenance, but we do not have authority
to publish as copyright problems have not been resolved. The standards have not updated since
1994; we can work on them while the issue is being resolved.
• C57.12.50 Requirements for Dry Type Distribution Transformers < 500 kva
C57.12.51 Requirements for Dry Type Distribution Transformers > 500 kva
C57.12.52 Requirements for Sealed Dry Distribution Transformers > 500 kva
C57.12.55 Conformance Standard for Dry Type Transformers used in Unit Installations
9.1.6 New Business - W. Patterson
• C57.12.58 Guide for Conducting Transient Voltage Analysis of a Dry Type Transformer
Coil
o SC voted to reaffirm the document. Paulette Payne will manage the ballot.
• C57.124 Recommended Practice for the Detection of PD and the Measurement of

Apparent Charge in Dry Type Transformers-
o SC voted to reaffirm the document. Paulette Payne will manage the ballot.
9.1.7 Adjournment - W. Patterson
The meeting adjourned at 11:58 AM
Minutes page - 39
9.2 Distribution Transformers - E. Smith, Chair
No report was given
9.3 Dielectric Test Subcommittee - L.B. Wagenaar, Chair
The Dielectric Test Subcommittee (DTSC) met on Wednesday, April 11,2001, at 1:30 p.m., in
Amsterdam, Netherlands at the Hilton Amsterdam Hotel, with 29 members and 33 guests present.
Three of the guests requested membership on the Subcommittee they included, Tom Bassett, Eric
Davis, and Alan Forrest.
9.3.1 Chair’s Remarks
After introduction of the attendees, the Chair reviewed some of the highlights of the Administrative
Subcommittee meeting held on April 9, 2001. (See Section 4.0 of IEEE/PES Transformer Committee
meeting minutes from the Amsterdam, Netherlands meeting for additional details of the Administrative
Subcommittee meeting).
1. Starting at the October 14-18, 2001 meeting in Orlando, Florida, IEEE/PES Transformer
Committee meeting will be 3 ½ days instead of the current 2 ½ days. The meeting will be held at
the Rosen Centre Hotel, in Orlando, FL.
2. The Technical Committee is soliciting ideas for technical sessions at all the meetings. The method
proposed is that the Working Group will develop the ideas for the technical sessions or seminars
and present them at the Working Group meeting. If the technical session is good enough it will be
presented to the entire Transformer Committee. The outstanding Technical Sessions will then be
presented at the annual Power meeting.
3. Working Group Chairs can recommend 2-3 additional people from the Working Group who can
receive a Certificate of Appreciation. These are individuals who make a significant contribution to
the completion of a Standard or a Guide.
4. The Chair also emphasized the importance of including the member’s e-mail address on the
attendance rosters. This speeds the process of getting the members the subcommittee minutes and
agenda. They should also make sure that their e-mails are updated on the main Transformer
Committee list since ballots are now being sent electronically.
9.3.2 Working Group Reports
9.3.2.1 Working Group on Partial Discharge Tests in Transformers - J.W. Harley, Chair,
reported by L. B. Wagenaar
19 members and 46 guests attended the meeting. Attendees introduced themselves. Minutes of the
previous meeting October 16, 2000 in Niagara Falls, Ontario, Canada were approved.
Minutes page - 40
The letter ballot PAR C57.127 Trial Use Guide For the Detection of Acoustic Emissions from Partial
Discharges in Oil-Immersed Power Transformers has been published. Copies are available through the
IEEE.
Dirk Russwurm of HV Technologies, Inc. discussed the measurable characteristics of PD, the
correlation of acoustic and electrical signals and the limitations of making these measurements for both
field and factory applications.
Discussions continued on the Guide for the Detection and Location of Acoustic Emissions from Partial
Discharges in Oil-Immersed Power Transformers and Reactors. The Title, Table of Contents, and
Section 11 Acoustic Activity Interpretation were reviewed.
9.3.2.2 Working Group on Revision of Low Frequency Tests - Mark Perkins, Chair
The working group met on Tuesday, April 10 at 11:00 am, with 14 members and 20 guests present.
The minutes of the last meeting were distributed to those present. 2 guests requested membership in the
working group.
The working group business consisted of two presentations on advanced dielectric tests. The first was
by Mark Perkins, on the dielectric response measurement for characterizing transformer insulation
conditions. The dielectric response test is a measurement of the capacitance and dielectric loss or
power factor vs. frequency. The setup for the test is the same as for the standard power factor test, and
measurements are made at multiple frequencies between 10 mHz and 1000 Hz. The measured data is
then analyzed by modeling the transformer insulation structure and fitting a calculated curve to the
measured data points. The fitted curve gives the percent moisture in the cellulose and oil conductivity as
two of the calculation parameters. Examples were shown demonstrating how the Dielectric Response
test provides improved accuracy over other established methods for determining moisture in the
cellulose. The second presentation was by Reto Fausch on the Recovery Voltage Method. The RVM
is a dc test of the transformer insulation that is used to trend the relative moisture in the cellulose.
Measurements are made by applying a dc voltage for a fixed time, then briefly shorting the specimen,
and finally measuring the peak value of the voltage that builds up after removing the short. The test is
then repeated to obtain a curve of the recovery voltage vs. the time of initial voltage application. The
shape of this curve is analyzed to determine the relative moisture level in the cellulose insulation.
The industry is beginning to accept advanced dielectric tests as an important part of field predictive
maintenance practice. There is a need for the tests to be done in the factory to provide baseline values
for comparison purposes and to quantify the moisture in the cellulose insulation after the factory drying
process. To prepare for this eventuality, it was recommended that we begin to work to include test
requirements and procedures in C57.12.00 and C57.12.90.
This meeting adjourned at 12:20 PM.
9.3.2.3 Working Group on Revision of Transient Dielectric Tests - Bertrand Poulin, Chair
(resigned) – reported by L. Wagenaar
Minutes page - 41
The Working Group on Transient Dielectric Tests met yesterday. Bertrand Poulin recently resigned as
chairman of the working group, so Loren Wagenaar chaired the meeting in his place.
Pierre Riffon resubmitted his proposal for specifying the minimum energy capability of impulse
generators. His previous proposal, submitted in 1998, had only one size for all kVA rating of
transformers. The new proposal included five sizes for 3 phase ratings ranging from 15 kVA to greater
than 240 MVA . The proposed minimum kilo Joule (kJ) ratings of the generators ranged from 12.5 to
100 KJ, respectively. Discussion at the meeting was that 1) the general approach for improving the
wave-shape tails was good 2) the KJ numbers may not be correct. The general discussion tended to
agree that they may be too high 3) Same emphasis needs to be given in the guide to point out that
generator setups will probably require parallel arrangements of the capacitor steps.
The remainder of the meeting was spent listing the priority topics within the working group. These are
listed as:
1. Wave-shapes for full and chopped lightning impulse tests.
2. Digital impulse recorders. Transformers create “non-standard” mathematical waveforms and

therefore require special wording to describe the waveforms. IEC has a considerable amount of
material in the new impulse guide, and we may be able to use all or some of their wording.
3. Switching impulse valves seems to be incorrect for some entries of Table 5 of C57.12.00. This
error appears to have occurred several revisions ago, and had been copied in subsequent revisions.
A new chair will be selected before the next meeting.
9.3.2.4 Task Force on Liquid-Filled Transformers Dielectric Test Tables - Phil Hopkinson,
Chair
The Working Group on Dielectric Test Tables met at 4:30 pm on April 10 in Amsterdam. There were
approximately (60) attendees, but only (21) signed the roster!!
The mission of this working group is to develop new proposed tables to replace tables 2 - 7 in
C57.12.00.
The chairman reviewed comments and revisions of tables that have been produced to date. Maximum
systems voltage has been added to supplement nominal system voltage. There was general support for
this change and for the inclusion of alternate arrester settings and corresponding BIL levels.
The issue of harmonization came up, and we defined it as a condition in which the IEC and ANSI
standards will not conflict with each other. They do not have to have identical wording. This issue was
most important in resolving the separate tables and relationships between IEC and ANSI standards.
The next action will be to send out copies of our draft for survey ballot with in the Dielectric Test
Subcommittee for comments.
Minutes page - 42
The meeting adjourned at 6:00 PM.
The Subcommittee Chair commented that at 350kV BIL the switching impulse is not 83% of the BIL.
This may have been changed in the standard by error several updates ago. This needs to be changed or
some rational as to why the switching impulse is different at this BIL needs to be developed. The
Subcommittee Chair (L. B. Wagenaar) volunteered to review the old standards to see when this change
occurred and if it was introduced by error.
P. Hopkinson commented that there had been discussions concerning the preferred versus the
alternative BIL levels in the standard. Some attendees argued for increasing the preferred levels and
some for reducing the levels. He is interested in comments that are received on this subject in the survey
ballot.
9.3.4 Liaison Reports
9.3.4.1 Insulation Coordination – John Crouse
(No report)
9.3.4.2 Surge Protection Devices – Bob Degeneff
(No Report)
9.3.4.3 IEC TC14/WG24 – Loren Wagenaar
There has not been a meeting of the Working Group since the October 2000 meeting. The next
meeting will be held September 2001 in Milan, Italy. The Chair reported that he had received the latest
IEC Impulse Guide. For those who are interested, copies of the Guide are available upon on request
9.3.5 Old Business
9.3.5.1 IEEE - 4 Art Molden
IEEE High Voltage Test Techniques (HVTT) meeting was taking place at the same time as the
Subcommittee meeting and Art Molden was attending that meeting in Florida. No Report was
available, an update will be made at the Orlando meeting in October.
9.3.5.2 Phase to Ground Clearances – B. Chiu
S. Tuli and Bill Chiu have been working on phase-to-ground clearances.
At the last Subcommittee meeting S. Tuli suggested that we develop a table comparing the NESC and
the IEEE clearances for review of the membership. This table will also have line-to-ground clearances.
B. Veitch suggested that we add the clearances from IEC 76-3 for a comparison. This maybe a little
difficult because of differences in system voltages in IEC vs. IEEE. S. Tuli volunteered to complete this
comparison and have it available for the October 2001 meeting in Orlando, FL.
9.3.6 New Business
9.3.6.1 Altitude Correction Factors
Minutes page - 43
Background:
The DTSC Chair addressed an issue that was raised during a ballot for Smoothing Reactors (1277).
One of the Circuit Breaker Liaison members (Mr. Lambert) pointed out that the Altitude Correction
Factors in the Smoothing Reactor Document were incorrect and that the Altitude Correction Factors in
all the current IEEE Standards are incorrect. He believes it is acceptable not to use any corrections up
to 1000 m, but once an altitude of 1000m level is reached, the cumulative correction factor from sea
level must be applied.
It was decided at the last meeting in Niagara Falls, Canada that this subject should be addressed by the
High Voltage Test Technique (HVTT) Subcommittee of IEEE-4. Art Molden our Liaison
representative to the HVTT Subcommittee will bring this subject up to the group this week in its meeting
in Florida. It was decided that the HVTT should look at the altitude correction factors since they
pertains to all apparatus that uses air as an insulator. The HVTT Subcommittee should make a
coordinated decision on how to apply the altitude correction factor.
It was noted by Richard Dudley that there were discussions on this subject at both the Dry Type
Reactor and Dry Type Transformer Subcommittee. It was pointed out that in the beginning of most of
the transformer standards the standard operating conditions required that the equipment operate up to
an altitude of 1000m. This implies that the equipment is capable of operating up to 1000m, if this is the
case, the way the altitude correction factor is currently being used would be correct. Switchgear
Standards from the 1940’s were reviewed and the altitude correction factors were the same as they are
today in those old documents. There have not been significant problems in applying the correction
factors as they appear in today’s IEEE standard.
The Subcommittee Chair recommended that we review the Transformer Standards to confirm that the
standard operating condition of the equipment goes up to the 1000m level. If this is the case, we should
convey this information to the HVTT to help in their decision. It was noted that the IEC currently uses
the same altitude correction factors at IEEE.
9.3.6.2 Other Business
Don Fallon had two items that come out of the Performance Characteristics Subcommittee pertaining to
C57.12.00 that should be handled by the Dielectric Test Subcommittee.
1. Correction of Switching Surge levels
2. Current standards do not define the limits for partial discharge on Class 1 transformers.
These items need to be review by the appropriate Working Groups.
There being no new business the meeting was adjourned.
9.4 HVDC Converter Transformers & Smoothing Reactors S. C. - Richard Dudley
The HVDC Converter Transformers & Smoothing Reactor S.C. met in the Orange 4/6 Room of the
Hilton Amsterdam, on April 10, 2001 with 10 members and 5 guests present.
Minutes page - 44
The following are the highlights.
1. The minutes of the Niagara Falls meeting were approved.
2. The attendance list was circulated.
3. It was suggested a liaison be established with the IEC W.G. responsible for the IEC converter
transformer standard. Per Einar Purra the IEC converter transformer standard was published in
Feb. 2001 and will be a 4 year trial use document.
4. Pierre Riffon provided input re HQ's experience with D.C. tests for HVDC converter
transformers and oil immersed smoothing reactors. Attachments to be provided to S.C.
members. Highlights and discussion points are as follows.
(i) The D.C. applied voltage test has worked out well and is also essentially the same as
the test methodology in the IEC standard.
(ii) The polarity reversal test was "quite easy to use". However practice was to ground the
d.c. supply during the reversal. This should be added to the test methodology.
In addition the test methodology in IEEE 1277 and IEEE C57.129 should be consistent
re performance of the polarity reversal test. Specifically p.d. should be measured
commencing immediately after voltage stabilization following the reversal; 1277 should
be modified accordingly.
5. Lars-Erik Juhlin presented a CIGRE publication from ELECTRA; Dec. 1994, No. 157; "The
Relationship Between Test and Service Stresses As A Function of Resistivity Ratio For HVDC
Converter Transformers and Smoothing Reactors". Document to be provided to S.C.
members. This document is the basis for portions of the test code in both IEEE 1277 and IEEE
C57.129 and the IEC converter transformer standard. The bibliography of the IEEE standards
should include reference to this document.
6. Einar Purra presented a comparison of the IEC and IEEE converter transformer standards.
They are well harmonized. The summary prepared by Einar will be provided to S.C. members.
Some highlights of discussions are:
(i) IEEE C57.129 Clause 6.10. Guaranteed losses should be more clearly defined; in both
IEEE and IEC documents. No load losses are suitably defined but load losses are not.
(ii) IEEE C57.129 Clause 6.11. Titles of subclauses should refer to "test levels" to be
consistent with the intent of the section. The definition of test levels should be separated
from test method.
(iii) IEEE C57.129 Clause 7. This clause covers construction. IEC has no similar section.
(iv) IEEE C57.129 Clause 9.6.2.2. The method of determining losses in the IEEE
document appears to be more accurate. Liaison is required on the issue with the IEC
Minutes page - 45
W.G. ANNEX A of C57.129 should be modified to include a typical example of

determining losses of a converter transformer.
(v) IEEE C57.129 Clause 9.7.1. There are significant differences in the test methodology
for performing the impulse test across the windings and to ground in the IEEE and IEC
documents. Peter Heinzig presented a series of graphs illustrating possible conditions of
over testing of the converter transformer insulation system. Peter's presentation will be
supplied to S.C. members. The IEEE methodology appears to be preferable to that of
IEC but over testing is possible with either methodology.
(vi) IEEE C57.129 Clause 10.2. The issue of tolerance on impedance was discussed. The
IEEE document is more strict (ok) whereas the IEC document is less clear and
clarification is required. In fact, impedance tolerances should be set by the designer of
an HVDC system; it is a system issue. A maximum deviation of ± 3% between units of
the same design (manufacture) is achievable and should be the criteria.
(vii) IEEE C57.129 ANNEX B. The OTHER test is not a temperature rise test (heat run)
but is a temperature rise verification for the hottest winding as determined by the
temperature rise type test. This OTHER test is performed on all converter transformers
on an order. IEC have a similar special test of 12 hour duration with gas in oil analysis.
(viii) IEC are producing an applications guide for converter transformers.
7. Alan Forrest presented data on loss measurement and calculation for a number of converter
transformers that were recently manufactured; focusing on losses vs tap utilized. Harmonic
losses vary with tap position. The harmonic loss test should be carried out at the maximum loss
tap position at which the temperature rise test is to be performed. At any other tap the
fundamental frequency load loss will be reduced. This reduction is expected to more than offset
any increase in harmonic loss because of tap position.
8. Richard Dudley stated that the option of a resonant overvoltage test as a substitute for the
switching impulse test is still under investigation. The main problems are availability and cost of
high voltage capacitors and a high frequency power supply that is capable of supplying the
circuit losses.
R. Dudley
9.5 Instrument Transformers - J. E. Smith, Chair
9.5.1 Chair’s remarks & Announcements:
The subcommittee did not meet in Amsterdam
9.5.2 Working Group Reports:
9.5.2.1 WG C57.13.5 - Working Group on Test Requirements for High Voltage Instrument
Transformers 115 kV Nominal System Voltage and above – Joe Ma
Minutes page - 46
The Working Group had two meeting sessions. Both were co-chaired by Pierre Riffon of Hydro
Quebec.
(1) A total of 13 people (7 members and 6 guests) attended the session.
(2) The minutes of spring 2000 meeting held at Niagara Falls, ON was approved as read
(3) Draft 14 was surveyed within the SC, after which it will be submitted to the Transformers
Committee for balloting.
(4) Future activities of the WG will be split into two parts:
a. To finalize the present draft in order it becomes a Trial Use Guide and
b. To revise and add items not included in the Trial Use Guide, e.g. C.T. used for
capacitor bank unbalance protection, to the present document.
The normal 2-session meeting is, therefore, recommended so that the first session is
reserved for objective (a) and the second session is for (b). To organized the second
session, a new chair from the manufacturing members is recommended. When we prepare
for the new PAR, we should make sure to put down two names for the chair; one being
from the manufacturing and the other is from the utilities (P. Riffon).
(5) Following changes will be made to D14 in reference to T. Zhao’s and Arteche’s comments:
(a) Clause 3.5 - The definition is revised to show “rated (primary)” voltage instead of
“nominal system” voltage.
(b) Clause 11.1 – The word “pure” is replaced with “substantially” to qualify the sinusoidal
current waveform. A note is included to advise readers that the secondary open circuit
voltage test shall normally be carried out in high power laboratory with apparent power
greater than 20 MVA in order to meet the test requirements.
c. Clause 8.4 - Editorial changes will be made to improve clarity, and Figure 5 based on
T. Zhao’s email of April 5, 2001.
d. Figure1 1 and 2; Clause 7.9 - The routine sealing test may be performed at any time at
the convenient of the manufacturers. A note to that effect will be added to Clause 7.9.
e. Table 6 - The second column is removed. The limit for hydrogen is increased from 10
to 15 ppm and methane from 3 to 5 ppm.
f. Clause 10.9.3 – A sentence is stating that the test may be performed by energizing from
the secondary winding of the transformers.
g. Appendix B - Dielectric test at 1000 m or less on transformers for installation at altitude

greater than 1000 m – A note is added to allow the dielectric tests at standard level if an
agreement is reached between users and manufacturers. This will address the concern
that the units could be excessively oversized if the units are tested at corrected voltage
Minutes page - 47
levels.
h. Documents and confidentiality of information – The relevant clauses regarding to the

documentation for the test laboratory and for customer review are clear on how the
manufacturers and users should do under those circumstances. No changes are
proposed.
i. The above changes and other based on SC survey will be incorporated as D14.01.
9.5.2.2 WG C57.13.6 – Working Group on Instrument Transformers for use with Electronic
Meters and Relays – Chris Ten Haagen
This WG did not meet
9.5.2.3 Working Group on C57.13 Revision – Tom Nelson
• This WG met on 4/10/2001 in Amsterdam, there were 10 people present.
• The members present voted to add the Partial discharge test submitted by Tony Jonatti
to section 4.7.2.
• It was noted that all dimensions are to be given in SI units.
• Section 8.8.2 should be removed.
• It was also noted that the section on measurements is outdated and needs to be updated
for the revision after this one.
9.6 Insulating Fluids Subcommittee - F. J. Gryszkiewicz, Chair (presented by Susan McNelly)
Current Subcommittee Projects:
C57.130 – Trial Use Guide for the Use of Dissolved Gas Analysis During Factory Thermal
Tests for the Evaluation of Oil Immersed Transformers and Reactors – Frank Heinrichs,
Chair.
The Working Group did not meet at the Amsterdam meeting.
The Guide must go through a recirculation ballot before it can be resubmitted to RevCom for approval.
P1258 – Trial Use Guide for the Interpretation of Gases Generated in Silicone – Immersed
Transformers – Jim Goudie, Chair.
No information on the progress of the new PAR was available.
Minutes page - 48
C57.111 – IEEE Guide for Acceptance of Silicone Insulating Fluid and Its Maintenance in
Transformers.
The last report was that this Guide would be sent out after the Amsterdam meeting.
C57.104 – IEEE Guide for the Interpretation of Gases Generated in Oil-Immersed

Transformers – Frank Heinrichs, Chair.
The last report indicated that this Guide would be sent out for a Standards Association Ballot after the
Amsterdam meeting.
C57.106 – IEEE Guide for Acceptance and Maintenance of Insulating Oil in Equipment – Joe
Kelly, Chair
Susan McNelly was acting Chair for the Working Group meeting held Tuesday, April 10, 2001. There
were 7 members and 6 guests present.
Draft 6 of the Guide has been submitted for Standard Association Ballot and is expected to be
complete by June 1, 2001. Apparently there was some miscommunication and several Working Group
members did not receive the notice of Ballot. IEEE will be contacted to see if this can be remedied.
Members and guests identified a couple of corrections to the Guide. If possible, corrections will be
incorporated before the Guide is issued.
C57.139 – IEEE Guide for Dissolved Gas Analysis Of Load Tap Changers – Rick
Youngblood, Chair
Susan McNelly was acting Chair for the Working Group meeting held Tuesday, April 10, 2001. There
were 13 members of the Insulating Fluids Subcommittee and 4 guests present.
The latest draft of the Guide was reviewed.
IEEE Standard 637 – Guide for Reclamation of Insulating Oil and Criteria for Its Use.
The Working Group did not meet at the Amsterdam meeting. No report was available.
Minutes page - 49
Next Meeting
The Insulating Fluids Subcommittee and its Working Groups will next meet in Orlando, Florida,
October 14 – 18, 2001.
Respectfully Submitted:
Susan J. McNelly
for
Frank J. Gryszkiewicz, Chair
Insulating Fluids Subcommittee
9.7 Insulation Life Subcommittee - D.W. Platts
The Insulation Life Subcommittee met at 8:00 AM Wednesday, April 11, 2001 in Amsterdam, The
Netherlands. Attendance was 10 members and 20 guests. The minutes of the October 17, 2000
meeting in at Niagara Falls, Canada were approved.
9.7.1 Chair's Announcements
From the ADCOM meeting on Sunday.
1. Next meeting will be in Orlando, Florida. The schedule will be expanded by one day, with the
meeting now ending on Thursday at noon.
2. We have received a call for papers for the 2002 Winter Power Meeting. Information is available to
anyone interested in preparing a paper.
3. The transformers committee has been directed to stop work on all standards where NEMA owns
the copyright. Work is continuing to resolve the stalemate. None of the standards assigned to our
subcommittee are effected.
4. Electronic balloting is on the horizon. By the time our subcommittee does it's next ballot, it will be
done all electronically.
9.7.2 Status Reports
Status reports were given for the following projects:
The Working Group on Revision of Temperature Test Code has completed its work. A draft of Clause
11, Temperature rise tests has been forwarded to Subhash Tuli for the next revision cycle for
C57.12.90.
Subhash Tuli reported on PC57.119, "Recommended Practice for Performing Temperature Rise Tests
on Oil-Immersed Transformers at Loads beyond Nameplate Rating". A recirculation ballot has been
submitted to IEEE, who has released it to the balloting pool. We expect completion in 30 days.
Minutes page - 50
9.7.3 Working Group Reports:
9.7.3.1 Working Group on Definition of Thermal Duplicate – Barry Beaster, Chair.
The Working Group met on Tuesday, April 10, 2001 at 11:00 AM. We had 6 members and 24 guests
in attendance. Don Platts chaired the meeting for Barry Beaster, who could not attend.
The Working Group did not meet in October, so there were no minutes to be approved.
A large portion of the time was spent discussing the thermal performance of duplicate units. It became
obvious that many people are confused about the purpose of this guide, and its expected use. It is not a
guide for transformer design or testing, but rather a guide for use when interpreting a user’s
specification.
We had a long discussion about the comparison of the calculated values for a new potential thermal
duplicate vs. the similar values of the old tested transformer. Some of the definitions state that the new
calculated values should be compared to the original tested values, similar to the way the calculations of
the adjusted values are done. Other definitions refer to comparing the calculated values from both units.
Barry will be asked to review these definitions and assure that the descriptions are correct.
We found several editorial changes that are required, Title of C57.12.90; proper use of the definitions
of directed flow, and guided flow; use of metric in dimensions; clause 4.11 duplicates 4.7; and the
exponent Z from 7.2 is not defined.
After correction of the editorial changes, we expect to survey the Subcommittee
There was no discussion of new business. The meeting adjourned at 12:15.
9.7.3.2 Working Group on Loading of Liquid Immersed Transformer – L. Pierce, Chair
The Working Group did not meet since Linden did not attend this meeting.
9.7.3.3 Task Force on Winding Temperature Indicators - M. F. Barnes, Chair
The Task Force did not meet since Mike could not attend this meeting. However, a group of 12
showed up at the meeting time and discussed the status.
The purpose of this task force is to write a technical paper regarding winding temperature indicators,
operation in different situations, different cooling modes, and different size transformers, with particular
attention to problems of the present technology in certain circumstances
We concluded that if there was insufficient interest to complete the proposed paper, then there is
probably little concern over the present status of temperature indictors. After review with Mike, we
will determine if the effort will continue.
9.7.4.4 Old Business
I have been informed that when C57.100 was published in 1999, there was an outstanding negative that
was not resolved. It concerned the testing procedure for extending the scope of the document from
Minutes page - 51
distribution transformers to power. IEEE has explained to the balloter the options for pursuing his
position. I will review the document and the history with Tom Prevost (Standards Coordinator) to
determine if the document should be worked on prior to the expiration of its five year life.
9.7.5 New Business
Items of new business were presented by Dennis Marlow and by Don Platts for Bob Grubb.
The proposals by Mr. Grubb were:
1 To prepare a spreadsheet type program to do the calculations necessary for converting heat run
data into a test report, for both standard runs and the new overload heat runs. The reasoning was
that there are several different methods that could be used and which produce different results.
After discussion, the subcommittee agreed that the chair should investigate the work done by the
Working Group on Revision of Temperature Test Code, to see if it had already addressed the potential
problem. There was little support, since most companies have already produced software, compatible
with their system, to do those calculations.
2 "We should start a working group to pull together all the test data from all the tests that have been
performed per PC57.119. Compare the results with loading guide calculations, and look at what
should be realistic values for the exponents "n", "m" and the time constants for different sizes,
constructions, and cooling methods for all transformers."
This will be held for future consideration.
The proposals by Mr. Marlow were to modify the average winding temperature requirements in
C57.12.00:
1. Modify C57.12.00 5.11.1.1 to say: "The average winding temperature rise above ambient shall not
exceed 70°C at rated KVA for transformers who's windings are cooled using forced directed oil.
These transformers are identified as OD**."
The above is a rewording of the IEC 76-2 standard and CSA-CAN3-C88 standards which have
the same limits for this cooling class. Note this is only applicable to cooling in mineral oil or
synthetic insulating liquid with fire point less than or equal to 300°C. This in no way allows the hot
spot temperature rise to exceed the 80°C limit.
2. Modify C57.12.00 5.11.2 to add: "In transformers with concentric winding arrangement, two or
more separate windings may be situated one above the other. In this case, the winding temperature
limit shall apply to the average of the readings for the stacked windings, if they are of equal size and
KVA rating. If they are not, the evaluation shall be subject to agreement between the user and the
manufacturer."
Some discussion of these proposals followed, with no overwhelming support or resistance for either.
We did discuss the difficulty of changing the basis of rating to 70°C for some transformers and making
certain that all coordinating standards are in agreement. Dennis agreed to provide some additional
background so that the concepts could be addressed by a task force or working group in the future.
Minutes page - 52
9.7.6 The meeting adjourned at 9:15.
Submitted:
Donald W. Platts
Chair, Insulation Life Subcommittee
9.8 Performance Characteristics - D. J. Fallon
9.8.1 Introduction/Attendance
The Performance Characteristics Subcommittee (PCS) met at 9:30 a.m. on Wednesday, April 11, with
40 members and 41 guests in attendance. 15 of those guests requested membership in PCS. All
members and guests were requested to provide E-mail addresses, as E-mail will be the primary means
of communication of PCS minutes and other documentation.
9.8.2 Approval of Meeting Minutes
The minutes of the October 17, 2000, PCS Meeting in Niagara Falls, Ontario, Canada, were approved
as written.
9.8.3 Chairman's Remarks
9.8.3.1 Administrative Subcommittee Notes
1) Items which are covered by other parts of the minutes have been deleted by the
secretary for editorial purposes.
2) All WG Chairs are requested to update their Rosters and forward to the PCS Chair by
June 30. Lack of attendance or participation for 4 consecutive meetings should result in
removal from the membership roster unless there are extenuating circumstances.
Members with that record should be contacted regarding the status of their
membership.
3) Separate E-mails were discussed at meeting time (and have been sent during May) to
PCS members and guests distributing valuable information from Naeem Ahmad of IEEE
related to web accessed information on the balloting and standards development
process, and forwarding Committee Vice-Chair Jin Sim’s encouragement for paper
submission and sponsorship of technical sessions for the 2002 Winter Power Meeting.
9.8.3.2 Membership
15 new members were added to the PCS Roster:
Norman Field, Ferranti-Packard

Alan Forrest, Teshmont Consultants, Inc.
Robert Ganser, Transformer Consulting Services
William Griesacker, Pennsylvania Transformer
Minutes page - 53
Peter Heinzig, Siemens AG

Marion Jaroszewski, Delta Star
Brian Klaponski, Carte International, Inc.
Don MacMillan, Tech-Tran Corp.
Mike McDermott, MJ McDermott & Associates
Guy Morrissette, VATECH Ferranti-Packard
Jim Nielson, Pauwels Canada, Inc.
Gustav Preininger, Consultant
Einar Purra, ABB Transformers AB
Raman Subramanian, Pennsylvania Transformer Tech.
Giuseppe Termine, PECO Energy
The Membership roster will be reviewed shortly. Members who have not attended any of the last 4
meetings will be contacted regarding their removal from the PCS roster – thanking them for past
participation, and indicating that they will be welcome to renew their participation and rejoin the
group.
9.8.4 Agenda Changes
None
9.8.5 Working Group Reports
9.8.5.1 Tap Changer for De-Energized Operation (Off-Circuit Tap-Changer) Specification and
Test – Phil Hopkinson, Chair; John Gauthier, Secretary
The WG met at 8:00 AM on April 10, 2001. There were 20 members and 14 guests present, and 6 of
those guests requested membership in the WG. The Minutes of the meeting held on 16 October 2000
were approved, and it was noted that these minutes were included in the IEEE Transformer Committee
report.
The Chairman reaffirmed the task to develop a document to deal with off-circuit tap-changers. He
noted that the IEC document is IEC 60214 that contains references to both on-load resistance and
reactance type tap changers as well as off-circuit tap-changers. He noted that the IEC document has
undergone some revisions recently, and these were subject of letter ballot review.
PCS Chair’s note: The WG Chair used the IEC terminology “off-circuit tap-changer” during the
meeting. IEEE terminology in the recent ballot of C57.12.80 is “tap changer for de-energized
operation”. The WG Chair agreed in discussion to modification of the Minutes to incorporate the IEEE
terminology. The IEC terminology is included as well for the information of PCS members.
The Chairman briefly reviewed the specifics of the task noting that tap change devices are used as
integral parts of transformers, liquid-filled and air-insulated. He noted that the tap changers for de-
energized operation (off-circuit tap-changers) could be mounted on core clamps, inside a cabinet but
Minutes page - 54
not on the core clamp, or in a separate cabinet. These options require close communications between
the user and the manufacturer so that satisfactory performance is achievable.
He noted that Tap Changers needed to have a rating in terms of their maximum continuous current. He
noted that if the tap changer ran at rated load it could operate in excess of twenty years. Members
engaged in a brief discussion of the expected life of the tap changer – twenty years or higher and how
this may or may not be achieved. The standard is intended to communicate the requirements for the tap
changer, including load cycles up to twice rated load daily, elevated temperatures, acceptable fluids, and
short circuits. These application considerations have particular impact on the proper choice of the
electrical contacts. The tap-changer manufacturer needs to understand the expectations of his product
and provide uniform rating information to the user.
The Chairman briefly discussed the suitability of the tap-changer in synthetic insulating liquids (Silicone),
noting that faster oxidation of the contacts is experienced in these environments. Satisfactory thermal
stability and contact life needs to be demonstrated by the tap-changer manufacturer for Silicone as well
as for mineral oil and/or air if any or all of these environmental conditions are to be rated.
The WG briefly reviewed the routine (r) and type (t) tests: proposed for the tap change manufacturer:
resistance (r), spring pressure (r), dielectric integrity (r), functional life (t), short circuit (t), mechanical
endurance (t), operating torque (t) and seal (r). These tests may all be classed as type tests (instead of
routine), but should be audited frequently to assure that current production is still in compliance.
The Chairman briefly discussed the temperature rise of contact test. He noted that the tests would most
likely be conducted in the brand new state, but the temperature rises seen at that stage may not continue
after some period of operation if the contacts are unstable. The functional life test should be conducted
as a type test to assure stability over a 20-30 year period. A brief review of testing on six samples of
contact materials ensued: silver versus silver in silicone (the most stable contacts in the most aggressive
environment); silver versus nickel in silicone; silver versus copper in silicone (not as stable as silver
versus silver); copper versus tin in silicone (canceled because of unfavorable results); copper versus
copper in mineral oil and copper versus copper in silicone. Silver versus silver demonstrated the
greatest stability and exhibited no change in resistance in both a short-term (30 day) and a long-term (6
months) test. He noted that unstable contacts are often detected by the presence of hydrogen gas that
proceeds to ethylene and ethane and eventually leads to acetylene that is caused by arcing. Such arcing
produces gas bubbles that may cause dielectric flashover and loss of a coil. The conclusion is that the
tap-changer must be functional life-tested to verify its stability as a type test.
The Chairman noted that the IEC standard, IEC 60214, contained sketchy rating information. As a
result, the US comments on the current revision of the document contained recommendations to include
continuous rating information, transient rating information, and suitable environment information.
It was recommended that the IEEE document contain the aforementioned rating information as well as
call for the functional life test. It was noted that good communications between the tap changer
manufacturer and the user plays a significant role in the delivery of a correct product.
It was inquired if the document would address switches. It was agreed that dual voltage off-circuit
switches and delta-wye switches should be addressed.
Minutes page - 55
Members engaged in a brief discussion on the need to ensure harmonization between the IEEE and the
IEC standards. It was noted that harmonization means that both documents should not provide
conflicting information; they are not necessarily identical documents. Functional requirements, not
construction (design) specific criteria, should be in standards. A document that addresses only
temperature rise and not stability is not sufficiently complete, it was noted. It was recommended that the
IEC method of calculation of temperature rise, based on 1.2 times rated current, should be considered.
It was proposed that the IEC requirements be reviewed and presented at the next meeting of the WG.
Mr. Bengt Stenestam agreed to provide such a review.
It was noted that temperature rise at 1.2 x rated load; and also at 2 x rated load would be addressed in
the document
The Chairman summarized the need for the document: to establish a communication link between the
tap change manufacturer and user. He proposed to offer some language to change C57.131. It was
noted that the WG should develop a PAR, since the task has been refined. It was proposed that the
proposed revision be presented to the WG preparing the revision of C57.131. Both tasks will be
undertaken.
There being no additional business, the meeting was adjourned at 9:20 AM
9.8.5.2 PCS Revisions to C57.12.90 – Bruce Forsyth, Chair; submitted by Neil Kranich
The Working Group met on Tuesday, April 10, 2001 with 19 members and 15 guests present. There
were 10 requests for new membership in the working group. Neil Kranich chaired the meeting in Bruce
Forsyth’s absence. Minutes from the October 16, 2000 meeting in Niagara Falls were approved as
written.
Proposed wording for new test procedures that had been submitted by Subhash Tuli and Dan Perco
were handed out to the group for discussion. The wording on DGA testing submitted by Roland James
was not available for distribution at this time.
Dan Perco’s rewording of the note in clause 4.3 was intended to address an issue raised that the note
led to undue concern for the potential of damage during testing. There was a lengthy discussion of both
the note and the proposed revision, after which the working group voted to eliminate the note in clause
4.3 completely. Removal of this note leaves the sequence of tests, other than the dielectric tests,
unspecified and therefore subject to either the manufacturer’s practice or the purchaser’s specification.
The proposed wording for Operational Tests of all Devices Operated from the Control Box (Not
including LTC Mechanisms), Operational Testing of Load Tap Changers, and Low Frequency
Dielectric Test for Low Voltage Control Wiring, Associated Auxiliary Control Equipment, and Current
Transformer Secondary Circuits, on Class II Transformers were discussed and approved with minor
editorial changes. At this point the meeting ran out of time. Neil announced that Bruce will e-mail the
proposed and revised wording of all the new test procedures in survey form within four weeks, in an
effort to get everything cleaned up as quickly as possible.
The meeting adjourned at 10:45 AM.
Minutes page - 56
9.8.5.3 PCS Revisions to C57.12.00 – Steve Snyder, Chair; Dennis Marlow, Secretary
The Working Group met on Tuesday, April 10 at 1:30 PM. There were 17 members and 20 guests in
attendance. The following 3 guests requested membership, and are welcomed into the Working Group:
Don Fallon Public Service Electric & Gas
Marion Jaroszewski Delta Star Inc.
Raman Subramanian Pennsylvania Transformer Technology
The minutes from the October 16 Niagara Falls meeting were approved as submitted. Dennis Marlow
has agreed to be the Working Group secretary.
An electronic survey of PCS and the WG was conducted in February 2001 addressing various
comments received during the balloting of C57.12.00. 125 members were surveyed and 30 returns
were received. A total of 23 items were included in the survey; 8 items were approved without
comment, 5 items approved with comment, and 10 items were not approved. The purpose of this
meeting was to review the comments and resolve as many issues as possible.
The following items were resolved:
1) Clause 4.3.3 note (k), regarding unusual service conditions, will remain as it appears in
the present version of C57.12.00.
2) Clause 5.5.3 concerning the ratings of transformer taps, will be revised as follows:
“Whenever a transformer is provided with taps from a winding for de-energized
operation, they shall be full-capacity taps. Transformers with load tap-changing
equipment may have reduced capacity taps unless specified otherwise, for taps below
rated winding voltage. When specified, other capacity taps may be provided. In all
cases, the capacity shall be stated on the nameplate.”
The group also discussed whether there was any interest in changing the IEEE / ANSI
requirements to specify full-capacity taps on LTC transformers for taps below rated
voltage. Unanimously, those present voted against considering this change.
3) Clause 4.3.3 note (g) will be revised as follows: “Unusual duty or frequency of
operation, or high current short duration loading.”
Due to time constraints, the remaining items could not be addressed during the
meeting. Work will continue via e-mail and telephone to resolve as many of these
issues as possible before the next ballot of C57.12.00.
5 items of new business have been submitted for future consideration by the appropriate committee or
working group:
1) Dennis Marlow, clause 5.11.1, winding temperature rises.
Minutes page - 57
2) Dennis Marlow, clause 5.11.2, conditions under which temperature limits apply.
3) Don Platts, table 10, note 8, accuracy requirements for nameplate & drawing weights.
4) Jerry Corkran, table 13, note (a), phase-to-phase clearances.
5) Jerry Corkran, clause 5.1, cooling classes of transformers.
In addition, during the meeting the following items were brought before the Working
Group:
6) Subhash Tuli, requested that a new section be added to C57.12.00 to address

instruction manuals, sound levels, and the correction of a switching surge level listed in
table 6.
7) Leon Plaster pointed out that the existing ANSI standards do not define a limit on
corona for class I transformers, and requested the appropriate committee review this.
9.8.5.4 Loss Tolerance and Measurement - Ramsis Girgis, Chair; Ed teNyenhuis, Secretary
11 members and 18 guests attended, 4 requested membership.
The first report was from Eddy So on the TF meeting on “Guide of Low P.F. Power Measurements”.
The complete draft of the guide was discussed. The TF Chairman will send the document to the
members of the WG and TF for review. He will discuss the feedback and will make the necessary
changes to the document for the Fall meeting. (PCS Chair’s Note: This Guide is sponsored by PSIM,
but the application is here. If any PCS member wishes to assist in review of this document, please
contact Eddy So at eddy.so@nrc.ca)
The next item reported was the status of the “Loss Measurement“ Guide. The Guide was sent for
balloting right after the Niagara Falls Fall meeting. The closing date of the ballot is April 11, 2001. As
of April 9, 2001, 100 returns were received out of 146 total ballots. Out of the 100, 94 were
affirmative, 1 was negative and 5 were abstention. The Chairman reported that there were a great
number of good comments, mostly editorial, but there were about 10 comments that were of a technical
nature which were discussed and resolved at the WG meeting. Once all the ballots have been received,
the plan is to make all the changes agreed upon and get approval for reversing the negative ballot(s).
The changes will then be sent for re-balloting.
The meeting was adjourned at 5:45 p.m.
9.8.5.5 Switching Transient Induced by Transformer/Breaker Interaction - Bob Degeneff,

Chair; Peter Balma, Secretary
The Working Group on Switching Transients Induced by Transformer/Breaker Interaction was called to
order at 8:05 AM on Wednesday April 11, 2001. There were 31 Members and 8 Guests present.
After introductions, the agenda for the meeting was reviewed, followed by approval of the Minutes from
Minutes page - 58
the October 17, 2000, meeting in Niagara Falls, Canada. Draft 2 of the guide, minutes, and copies of
the overheads presented were distributed.
The PAR, PC57.142 for this working group has been approved.
Tom Tobin of the IEEE Switchgear committee contributed to the working guide by providing a
perspective of breaker / transformer interaction from the breaker point of view. He suggested that
definitions for this guide need to be consistent with those of the breaker community. In addition, he
indicated the switchgear committee has looked at this problem from the dV/dt and high voltage point of
view at the terminals of the transformer. However, they agree this issue has not been addressed in
terms of internal resonant voltages.
The group discussed the need for reproducing information relative to understanding the system external
to the transformer since it exists in several existing guides and publications, for example CIGRE Report
#50 and C37 and IEC standards. The general consensus of the group was to use the results of these
guides without reproducing the derivations.
Jeewan Puri provided an update of activities at CIGRE in this area. They propose a workshop in 2002,
and to provide a tutorial / guide in the future for understanding interaction phenomena. The present
effort is looking to define risk factors for potential problems, and provide a guide to users to determine if
further study or mitigation components are needed. A copy of the last CIGRE meeting minutes will be
distributed with these minutes.
The table of contents of the existing draft were reviewed to determine if the level of content is sufficient
and that all the information needed is included in the guide. As the table of contents was reviewed, the
working group looked for volunteers to draft unwritten sections. Various discussions during this review
expressed concerns for mitigation methods, transformer sizes impacted, risk analysis, and the economics
of study versus mitigation.
9.8.5.6 C57.133 Guide for Short Circuit Testing - Nigel McQuin
The WG did not meet in Niagara Falls. The PCS Chair reported status. The Ballot is expected to go
out very shortly. There is an urgent need to return this document to active status. All members of the
Ballot Group are urged by PCS to consider voting affirmative, and to note comments with their ballot if
there are areas for suggested enhancement of the document. The Short Circuit Test Guide is presently
out of publication, as the Annex originally covering this subject has been removed from the revision of
C57.12.90. If concerns for the Ballot on C57.133 can be expressed as comments to an approved
ballot, then this needed document will be published. PCS will then initiate a new PAR for revision work
to cover any topics that arise in the ballot process.
9.8.6 Project Reports
9.8.6.1 Status of C57.21, 1990 (R1995) Standard Requirements, Terminology, and Test Code
for Shunt Reactors Rated Over 500kVA
Minutes page - 59
The reaffirmation process, which was expected to have been in motion at the time of this meeting,
experienced some communication difficulties. The process has been initiated, and reaffirmation is
expected prior to the next meeting. Peter Balma will handle the reaffirmation for PCS. In the Dry Type
Reactor WG, Richard Dudley, with assistance from others, has prepared a Draft for an Annex to
C57.21 covering specification and testing of thyrister controlled shunt reactors for static VAR
Compensators. As reported at the last meeting, Richard Dudley and Peter Balma have both
volunteered for leadership roles in the updating of C57.21 after the reaffirmation process is complete.
Specific responsibilities will be defined based in part on the needs identified in the reaffirmation ballot.
9.8.7 Old Business
9.8.7.1 Status of IEEE 32, 1972 (R1997) Standard Requirements, Terminology, and Test
Procedure for Neutral Grounding Devices
This document expires in 2002. The Transformer Committee considers that PCS will have the
responsibility for updating and maintenance of this document. PCS will work with Tom Prevost to
review responsibility, as this document had been administered by the Surge Protective Devices
Committee, and review of that Committee’s website indicates their plan to “Prepare new standard
C62.91 which will be a revision and updating of existing standard IEEE 32.1972.” At the very least,
input from the Transformers Committee is appropriate. Steve Schappell has volunteered to Chair a new
WG to discuss updating IEEE 32, and a meeting will be scheduled for this WG in Orlando. Volunteers
are needed to work with Steve on this project. If you have experience or interest, please contact Steve
at (Steven.Schappell@WaukeshaElectric.spx.com).
9.8.7.2 Inrush Current Tutorial
An Inrush Current Tutorial will be scheduled for the Orlando Committee Meeting, building from Phil
Hopkinson’s and Ramsis Girgis’ presentations at the Nashville Meeting. Glen Swift has volunteered to
discuss impact of inrush current on differential relaying. Fred Elliott has agreed to discuss BPA
experience in dealing with inrush effects. Others considering possible participation (especially utilities
with practice in response to inrush issues) are asked to contact either Phil Hopkinson
(hopkinsp@squared.com), as Phil has agreed to coordinate the organization of this Tutorial, or myself.
9.8.7.3 Topics for Future Technical Presentations / Panel Discussions / Tutorials
1) Review of the work of Bob Degeneff’s WG on Switching Transients Induced by

Transformer/Breaker Interaction.
2) Discussion on Loss Measurement, sponsored by Ramsis Girgis’ WG on Loss

Tolerance and Measurement.
3) Discussion on the variability (tolerances) of performance parameters for similar

transformers, including parameters such as noise, thermal performance, core loss,
excitation, inrush, etc.).
4) Energy Efficiency as related to the topic of a National Energy Policy
Minutes page - 60
These potential topics will be forwarded on to the Committee Chair. Volunteers who would be
interested in developing these ideas further can contact the PCS Chair.
9.8.7.3 Scope of C57.12.00 as Related to 25Hz Transformers
At the last meeting, Don Platts requested a review of the scope of C57.12.00 regarding applicability to
25Hz transformers, and an understanding of the terminology “special transformers”. The topic was
raised as no action had been taken since the last meeting. Ramsis Girgis commented that there would
be work in his WG on conversion of losses, noise, and excitation current from 60Hz to 50 Hz, and that
this could provide a basis of discussion of the 25Hz topic.
There were no other items of new business.
9.8.9 Next Meeting
The next PCS meeting is expected to be scheduled for Wednesday, October 17, 2001, in Orlando,
Florida.
The meeting adjourned at 10:35 a.m.
Donald J. Fallon
PCS Chair 5/31/01
(donald.fallon@ieee.org)
9.9 Power Transformers Subcommittee: Everett Hager – Chairman (presented by Joe

Watson)
Tom Lundquist – Vice Chairman
Joe Watson – Secretary
The Power Transformers Subcommittee met at 11:00 AM Wednesday, April 11 with 33 members and
47 guests in attendance. 15 of the guests requested and were granted membership, bringing the total
membership of this Subcommittee to an even 100.
After introductions, the minutes of the last meeting were approved.
The Working Group reports were presented as follows:
9.9.1 The working group on the revision of C57.12.10
Javier Arteaga - Chairman
The Group met at 8:00 AM on Tuesday with an attendance of 27 members.
Administrative Subcommittee members updated the Group on the existing situation between NEMA
and IEEE regarding the copyrights of several NEMA standards including C57.12.10. After several
Minutes page - 61
discussions, the Working Group recommended to the Administrative Subcommittee to continue the
work of this Working Group and request a PAR for either the revision of C57.12.10 or the creation of
a new document to cover power transformers. The PAR will be issued for the next meeting.
At this time a draft will be prepared and distributed only within the Working Group members for review
and comments.
Additional guidelines were provided for the sections of this draft as follows:
• LTC section to cover the application on delta or wye connections, to regulate either the HV or
LV winding with or without variable core flux
• The draft will include preferred BIL ratings from C57.12.00
• New devices not widely used will be included in an annex
Sections of the draft will be sent to the Working Group chairman by June 15 for compilation, and the
draft will be sent to the Working Group members by July 15 for comments and further discussion during
the next meeting in Orlando.
The following members are preparing the following sections of the draft:
Ratings: John Rossetti, Rich von Gemmingen
Construction: Dennis Marlow, Roland James, Bob Hartgrove
LTC: Jim Harlow
9.9.2 The working group on ltc performance
William Henning - Chairman
The Working Group on LTC Performance met on Tuesday, April 10 at 11:00 AM with 10 members
and 19 guests attending. Two guests requested membership after the meeting. Minutes of the previous
meeting were approved.
This Working Group has been assigned responsibility for preparing a re-affirmation ballot for C57.131,
“Standard Requirements for Load Tap Changers.” The Working Group chair will submit a PAR for this
activity.
The need for possible revisions of C57.131 was discussed. The Working Group will proceed with
reaffirmation to keep the current document valid. Then we will look at additional information and some
possible minor changes to C57.131 in a future revision, as discussed below.
Minutes page - 62
Two considerations for revision of this standard after re-affirmation are as follows:
• The first consideration is that Phil Hopkinson chairs a Working Group that is proposing to add
information on de-energized tapchangers, based on the IEC 214 clause on this subject. In
addition, the Working Group proposes to add the requirements for a functional life test for de-
energized tap changers.90-
• A second consideration is review of additional changes made by IEC WG26 on IEC 214 since
C57.131 was prepared by IEEE.
The Working Group also discussed terminology used in the document. The distinction between
auxiliary supply circuits and control circuits was discussed. It was decided to defer this small issue to a
possible future revision.
A subject outline for the Load Tap Changer Application Guide, based on the corresponding IEC
document was presented.
The final subject discussed was the need for a definition of Load Tap Changer Contact Life and a
uniform and standard way of determining contact life. C57.131 states that (regarding the Service Duty
Test) “The results of this test may be used by the manufacturers to demonstrate that the contacts used
for making and breaking current are capable of performing, without replacement of the contacts, the
number of tap change operations guaranteed by the manufacturers.
Jim Harlow agreed to draft a section of the Guide on this subject.
9.9.3 Working group on phase shifting transformers
Edgar Trummer/Tom Lundquist – Co-Chairmen
The Working Group met on Tuesday, April 10 at 4:30 PM. 9 members and 16 guests were present.
A summary of a re-circulation ballot was presented as follows:
97 eligible people in the ballot group
77 affirmative votes
2 negative votes
7 abstentions
88% return with 97% affirmative
The two negative ballots were discussed. One negative ballot was on an item that was not revised or
changed from the main ballot. Since the balloter did not vote negative on this item during the original
ballot, the negative is not possible for consideration. The negative ballot was withdrawn
Minutes page - 63
9.9.4 The working group on on-line monitoring of liquid immersed transformers
Andre Lux/Donald Chu – Co Chairmen
The Working Group met Tuesday, April 10, 2001. Approximately 70 members and guests were in
attendance. The majority of the meeting was spent discussing Draft 9 of the Guide. Draft 9 was sent
out in March to the Working Group membership in order to solicit comments on the Guide so the Guide
can be finished and sent to ballot. Approximately 40 surveys were returned to the co-chairman and
some of the comments were discussed. Volunteers to write some of the remaining sections were
accepted. The Working Group plans to meet in Orlando the Sunday immediately before the next
Transformers Committee meeting. The Guide will be reviewed in detail and edited during this one-day
meeting.
A panel session on the statue of ON-Line Monitoring will be held during the Orlando meeting. The
panel will consist of transformer manufacturers, utilities and monitoring system manufacturers and will
discuss trends and the status of on-line monitoring of transformers applications. The presentations will
be a purely technical (not marketing) nature. Two volunteers to join the panel came forward. One is
from a utility and one is from a manufacturer. More volunteers will be requested. A panel session on
this topic will also be conducted at the upcoming T&D Conference in Atlanta, Georgia.
9.9.5 The working group on transfofmer life extension
Rowland James – Chairman
The Working Group met at 3:00 PM on Tuesday, April 10 with approximately 35 members and guests
in attendance.
After introductions a brief discussion of the latest draft’s status was held. After a period of relative
inactivity, much progress has been made on the latest draft.
Joe Watson made a presentation on a statistical approach to transformer risk assessment and
maintenance. The focus of the presentation was the proposal to create a reliability model similar to a
fault tree that can accept inputs from condition assessments of all the transformer’s components or
systems. This model would take the assessed conditions and calculate the failure probability of each
transformer.
Andre Lux also presented information on this Guide’s Bibliography and references.
The meeting was adjourned at 4:15 PM.
9.9.6 The west coast transformer working group
Mike Lau - Chairman
The West Coast transformer Working Group met at 1:20 PM at the Arizona Public Service’s Shure
Building in Phoenix, Arizona on November 6th, 2000. There were four members and seven guests
present.
Minutes page - 64
Members: Guests:
Tom Lundquist Stephen Allen
John Irvine Bill Thompson
Bob Stewart Hana Abdallau
Mike Lau Charles Hoesel
Jean-Bernard Dastous
Sam Perkins
Steve Brown
After introductions, Mike Lau provided a brief report on the recent main transformer committee meeting
in Niagara Falls, in mid-October, 2000. To attract more participation and attendance, more tutorials
and technical presentations will be scheduled for future meetings. Future meeting dates and details were
provided.
T.V. Oommen’s paper “Bubble Evolution from Transformer Overload” was briefly reported followed
by a discussion by the attendees on Bucholz Relay protection.
C57.93 – the Guide for Installation of Liquid-Immersed Power Transformers is due for re-affirmation at
the end of this year. Invitations to be members of the balloting pool have already been sent. Mike Lau
pointed out that there were issues (such as the acceptable leakage rate for vacuuming; the acceptable
vacuum treatment in transformer dry-out; problems associated with re-energizing transformers under
cold temperatures, etc.) that need to be re-visited. The Guide also makes reference to the D877 oil
dielectric test that is no longer being used to test transformer oil (see the new C57.106 Oil Guide).
Therefore, irrespective of the outcome of the re-affirmation ballot, the guide will need to be revised. It
is recommended that a Task Force/Working Group be set up to deal with the necessary revision. (See
the additional report below on the Amsterdam meeting of this Working Group)
On Old Business, Tom Lundquist reported that the Guide on Phase Shifting Transformers has been
successfully balloted with 90% affirmative and four negative votes. The Guide is expected to be
completed by March 2001.
Under New Business, two items were brought up:
1. Mike Lau indicated that a method is required for drying out transformers with non-vacuum
proof tanks. The hot air method may be used for such purposes. He also reported that an
Australian transformer manufacturer apparently used a combination of a hot air and vacuum
method and claimed that it is more effective than the traditional hot oil/vacuum method. Perhaps
more studies are warranted.
2. Mike Lau indicated that the current Installation Guide does not provide any guidance with
respect to the flow rate of dry air required for purging during transformer inspection. Other
Minutes page - 65
attendees felt that monitoring the oxygen content is necessary and cautioned that there could be
a liability concern if a set flow-rate is provided.
There was no more business and the meeting adjourned at 3:00 PM.
9.9.7 The working group on the installation of liquid-filled transformers C57.93
Mike Lau - Chairman
The Working Group on the Installation of Liquid-filled Transformers was called to order at 1:35 PM on
Tuesday April 10, 2001. There were 39 attendees present. The agenda for the meeting was distributed
and introductions were made. The Chairman indicated this was an informational meeting to review the
re-affirmation ballot of C57.93 and to initiate a Working Group to begin the process of revising this
standard. An attendance list was circulated and all guests were asked to indicate if they would like to
become members of the Working Group. 12 persons requested membership. In addition, Peter Balma
volunteered to be secretary of the Working Group.
The reaffirmation ballot was sent out to 126 individuals and 99 were returned. This was a 78% return
with 93 affirmative, 3 negative and 3 abstention responses. The three negative responders were
contacted for clarification and agreed to withdraw their negative ballots. However, due to some
wording problems on the submission to IEEE one of two actions can be taken. Either the ballot can be
re-circulated with the negatives and can be approved with a 75% affirmative vote, or the comments can
be re-worded and re-submitted to IEEE. The latter approach will be followed. In addition, a new
PAR will be prepared to initiate the revision process for this standard.
The meeting continued with a discussion of the technical comments received during the ballot and
outlined in this meeting’s agenda.
a) Hold time for energization after fill
b) Start-up of transformers below –20°C
c) Hold time for transformers shipped oil-filled after processing
d) Oil test method
e) Level of vacuum for filling
f) Methods to heat windings be energization during vacuum processing
g) Acceptable shipping impact forces
h) Oxygen measurements and relationship to shipping integrity
i) Use of Metric versus English units
After discussion, it was decided that a survey of the majority of these items with both manufacturers and
users would provide a starting point for revisions to the guide.
Minutes page - 66
New items for discussion included the topics of confined space entry, dew point measurements at
temperatures below freezing, and safety and cooling issues concerning oil-filled transformers installed
indoors. Both will be discussed in additional detail as the Working Group moves forward.
9.9.8 Old business:
Report on TRV breaker-transformer switchgear/transformer project
The following report was presented by Tom Lundquist
• There will be a PAR developed and a High Voltage Subcommittee of the IEEE Switchgear
Committee
• Previous volunteer list was lost between Mel Smith’s computer crash and Tom Lundquist’s
computer change-out so we need to get the names and contact information for volunteers again
• Mel will send a letter to all volunteers from the PTSC
• Preliminary investigations support the idea that large transformer capacitance may be measured
accurately using simple current injection or resonant techniques. The techniques use a low
voltage circuit and are easily set up to conduct tests. These should be simple to use in a
laboratory environment and during field measurements.
• Calculations of the capacitance values by transformer engineers seem to be a questionable

approach to obtain accurate information.
• Derivation of capacitance values from FRA during factory impulse tests does not appear to be
possible because of the capacitance involved in the overall circuit. The impulse generator and
measuring device have capacitance values so much larger (in the micro Farad range) than the
transformer capacitance (in the Pico Farad range) that he transformer value is not possible to
calculate.
9.9.9 New business:
Joe Watson reported on the tutorial held Wednesday at 9:00 AM on standardized control cabinet
designs. Both ABB and Smit presented their approaches to a standard cabinet design. A new
Working Group will start work on this subject at the next meeting in Orlando. A PAR will be requested
when light can be seen at the end of the tunnel.
Florian Costa presented a brief video of a successful 1.0g seismic test of a 500 kV bushing.
The meeting was adjourned at 12:15 PM
Minutes page - 67
9.10 Underground Transformers and Network Protectors – Carl Niemann (presented by John
Sullivan)
The meeting was called to order at 9:30 AM, April 11, 2001 in the Orange 1 room of the Hilton
Amsterdam. Three member were present.
The Committee reports were as follows:
C57.12.40 – Liquid Filled Secondary Transformers met with C57.12.10 working group to learn more
about the copyright issue.
C57.12.24 – The Working Group for Underground Type Three Phase Distribution Transformers met
Tuesday April, 10, 2001.
The meeting was called to order at 9:36 AM. The attendance was three members and one guest.
The minutes for the Niagara Fall meeting were approved as written.
Future revisions to the standard were discussed.
1. The next revision of this standard must reflect metric units only.
2. Metrification was discussed. The working group decided it would be best to circulate the
material and comments gathered by the metrification Task Force chaired by Dudley
Galloway for comments.
3. Construction: materials composition, thickness and coatings were discussed. It was

decided to include to include these items in the next revision.
There being no further old or new business, the meeting was adjourned at 10:15AM.
9.11 Audible Sound and Vibration - J. Puri, Chair
The Subcommittee met on Tuesday, April 10 at 3:00p.m. With twelve members and five guests present.
The minutes of the last meeting at Niagara Falls, Canada were approved with on editorial correction.
The following items were discussed:
9.11.1 WG Report
There were no WG reports at this meeting.
9.11.2 SC Chairman’s Report on NEMA Activities
Jeewan Puri, the Subcommittee Chairman reported on the following subjects:
• Jeewan reported on a subcommittee survey on the subject of writing sound intensity and sound
pressure measurement procedures. Prior to this meeting, the subcommittee members were sent:
1. Copies of the present sound level measurement procedures as listed in IEEE Standards
C57.12.90 and C57.12.91.
Minutes page - 68
2. A preliminary draft of sound intensity and pressure measurement procedure written based on
IEC 60076-10 by J. Puri.
3. The recommendations of nine volunteers who had prepared their comments after reviewing the
above information.
After reviewing this information, the subcommittee members voted to keep sound level measurement
procedures a part of the present IEEE C57.12.90 and C57.12.91 documents and to update these
documents to include sound intensity and sound pressure measurement methods. A working group of
13 volunteers was formed to prepare the first draft of this test procedure.
The subcommittee also voted to write a guide on the subject of sound level measurement procedures in
harmony with IEC 60076-10-1 sound level measurement guide.
9.11.3 NEMA Activities
• Jeewan had proposed revised sound level tables for NEMA Standards TR1 and ST 20 for liquid
filled and dry type transformers. These tables were extended based on a "Validity Check Equation"
to include additional transformer kVA ratings.
This proposal has been reviewed by NEMA membership and is now being circulated for voting.
9.11.4 IEC Activities
• Jeewan reported that IEC WG 25 has now prepared a committee draft (CD) of the sound level
measurement guide IEC 60076-10-1. This is an excellent document for us to follow for writing a
guide on this subject. However, this draft did not include an informative annex that was proposed by
Jeewan to present an analysis of NEMA sound level tables.
The subcommittee recommended that a simple reference to NEMA sound level tables should be
sufficient.
There being no other business, the meeting adjourned at 5:00 p.m.
Jeewan Puri
SC Chairman
9.12 Bushings - F. E. Elliott, Chair
9.12.1 Introduction and Membership
Chairman, Fred Elliott opened the meeting at 9:30 AM and welcomed the members and guests. Sixteen
members and twelve guests attended the meeting. One request for membership was received. See
attachment for membership list.
9.12.2 Chairman’s Remarks
Fall meeting in Orlando, FL at the Rosen Centre Hotel, October 14 –18th. This will be the first meeting
with extended schedule.
Minutes page - 69
9.12.3 Approval of Minutes of October 17th , 2000 Meeting
The minutes were approved as written.
9.12.4 Working Group / Task Force Reports
9.12.4.1 WG on General Requirements and Test Procedure For Power Apparatus Bushings
(C57.19.00)
Keith Ellis reported that his WG met on April 10th, 2001 at 3:00 PM with sixteen members and nine
guests present. Five requests for membership were received. He reported the following:
1. Approval of Last Meeting Minutes
2. Discussion on Comments Received on PC57.19.00 Draft 4
Issues /comments on Draft 4 were discussed. Draft 5 will be circulated in the Bushing Subcommittee
before the next meeting in Florida.
There were questions about 50/60 Hz testing, thermal stability testing. Keith will be sending an Email to
WG members for comments.
3. New Business
A proposal for bushing test sequence was received. It will be reviewed by the manufacturers for
inclusion in draft 5. No other new business was discussed.
4. Adjournment
The meeting was adjourned at 5: 30 PM after two sessions.
9.12.4.2 Task Force on Draw-Lead Bushings
Russ Nordman reported that his Task Force meeting was held at 1:20 PM on April 10th, 2001 with
eleven members and seven guests present. No requests for membership were received. He reported the
following:
1. Approval of Last Meeting Minutes
2. Draw Lead Basis of Rating
Bushing manufacturers were asked to report on their review of proposals on hottest spot temperature
calculation methods and proposals received on draw lead loading. A report on the proposal using same
watt loss from central tube was discussed. Testing indicates that this is not the same as measured watt
loss in draw leads and therefore is not a viable method for loading calculations.
Minutes page - 70
Presentation of Draw Lead Loading vs. Surface Watt Density was discussed. This is intended to show
that different manufacturers and designs have varying capabilities of loading for a given cable size.
A proposal for defining the initial conditions of test and temperature limits will be created and sent to TF
members for review and reported in future meetings.
3. Adjournment
The meeting was adjourned at 2:30 PM.
9.12.5 Report from Technical Advisor to IEC 36 A
Russ Nordman reported the following:
1. Review of the main document was done at the last meeting in Milan, Italy. Draft 1 includes minor
changes.
2. Initial draft on DC bushing standard has been completed. Draft may be available next year. There
are some questions about the IEEE Std C57.19.03.
9.12.6 Old Business
9.12.6.1 Reaffirmation/Revision of C57.19.100
Fred reported that the two negative ballots could not be resolved. Recirculation with two negatives in
progress.
9.12.6.2 Technical Topics
Fred is looking for topics for future meetings
9.12.6.3 C2 Measurement Study Group
Mark Rivers was not present to report on this subject. A report is expected at the next meeting.
9.12.7 New Business
9.12.7.1 Interpretation Requests
A request was received for clarification with regard to cantilever strength. Fred will put together some
information on the comments received.
9.12.8 Adjournment
The meeting was adjourned at 10:15 AM
Minutes Submitted By,
Pritpal Singh, Secretary Bushing Subcommittee
Minutes page - 71
Minutes page - 72
10.0 Reports of liaison representatives
10.1 EPRI – B. Ward
Memorandum
April 12, 2001
TO: Mr. Ken Hanus
Secretary, IEEE Transformers Committee
TXU Electric & Gas
PO Box 970
Fort Worth, TX 76101
FROM: Barry Ward, Manager, Power Transformers
SUBJECT: EPRI LIAISON REPORT
The following report is for inclusion in your minutes for the April 12, 2001, meeting in Amsterdam:
1. Moisture Dynamics:
• Very rapid load changes can cause bubble formation under some conditions and reduce low
frequency and impulse dielectric strength by 40%. This has been demonstrated in models with
rapid/high overload.
• Additional work has been completed to experimentally study moisture dynamics associated with
rapid overloads and cool-down cycles plus detect inception of partial discharges caused by
bubble evolution. Moisture moves away from the hot conductor fast and returns very slowly
after cool-down. Distribution of moisture in the solid insulation was found to be very uneven
and time to dissolve free water is very long. TR-113390, Power Transformer Behavior
During Overload - Phase I: Dynamic Behavior of Moisture, is now published. Phase II has
been completed to study the correlation between moisture-in-oil with moisture-in-paper for a
range of conditions and temperature cycles using winding models with moisture contents ranging
from 0.5% to 7.0% in paper and pressboard. Phase III started 1/99 to broaden the
Minutes page - 73
experimental work and include prototype field applications of a dynamic moisture assessment
method on operating conservator-
Minutes page - 74
10.0 Reports of Liaison Representatives (cont’d)
type core-form transformers. TR-114075, Transformer Moisture-In-Paper Assessment

Method – Field trial, is published. An algorithm has now been developed and is described in
report number 1000724, Green-Yellow-Red Diagnostic Method: Transformer H2O
Assessment Method It describes the Transformer Moisture Monitor, a stand-alone software
application for the assessment of moisture conditions in the insulation system of a power
transformer. Further experimental work and field trials covering nitrogen-blanketed and shell-
form transformers are in process.
2. High Voltage Instrument Transformers & Bushings
EPRI sponsored a workshop 9/90 to provide a forum to compare and categorize failure
information, failure modes and potential mitigation measures. This was an outgrowth of the
Transformers Committee roundtable in Washington, DC, 4/88. Proceedings, TR 100205, were
published. A Project was completed to study fast disconnect switching transient effects on
HVCTs. Mathematical modeling was checked experimentally through laboratory tests and
switching tests in a 500 kV substation with very high speed instrumentation. Effects of switching
resistors during disconnect switching has been studied and found to reduce bus transients and
stresses by up to 80%. A final report is published, TR-104961.
A project has been completed to monitor a large number of HVCTs and bushings in laboratories
and in service, including on-line tan delta, partial discharge (pd) and other available monitoring
methods. Units are being tested to failure to evaluate failure modes, sensitivity of monitoring and to
develop "end-of-life" criteria for interpretation of field monitoring data.
A Symposium: HVCTs & Bushings – Failure Prediction & Prevention, was held September 22-
24, 1999 in Portland, Oregon. Proceedings, TR-113649, are published. At this time, three different
failure detection methods are being tried at three different utility sites. These are: an electrical pd
method for detecting internal pd, on-line and without taking an outage, an acoustic pd system for
measurements in the field, and an on-line tan delta system being evaluated under field conditions but
with accelerated aging.
3. Dynamic Thermal Circuit Ratings - DCTR
This project involves all transmission components including power transformers regarding software
development and a field test involving two substations on a utility system. The field test has been
completed. A final report is published, TR-105421. An IEEE paper, 94 SM 473-9 PWRD, was
presented at the IEEE/PES 1994 Summer Meeting in San Francisco. A second paper, "Field
Application of a Dynamic Thermal Circuit Rating Method", was presented at the IEEE/PES 1996
Winter Meeting in Baltimore. The method has been extended to include transmission lines. DTCR
2.0 is available to EPRI Substations Asset Utilization, Overhead Transmission, and Underground
Transmission Target members. DTCR 2.1 is being developed to add the IEC transformer thermal
model and other refinements.
4. On-Line Transformer Condition Assessment – Green / Yellow / Red
Minutes page - 75
This project is a continuation of earlier EPRI efforts to develop an on-line low cost gas analyzer that
were abandoned because of baseline drift of the sensors. A “key gas” analyzer uses metal-insulated-
semiconductor (MIS) sensors to monitor individual ppm for hydrogen, acetylene, ethylene and
carbon monoxide. A field demonstration program that involved 40 prototypes, starting October
1993, was completed in 1996. An EPRI/Micromonitors/Sandia National Labs collaborative project
was initiated 2/99 to solve technical problems that have delayed commercial production of the MIS
sensors. An alternative 8-gas analyzer for nitrogen-blanketed transformers has been developed and
is now commercially available. A prototype version suitable for conservator-type transformers began
a successful field trial May, 2000, and is now commercially available. Current work at Sandia
National Labs will first concentrate on producing a complete model for a hydrogen only sensor with
lab verification. Multi-gas modeling will follow.
Experimental work is in process to identify the dynamic behavior of gases and other byproducts
associated with loading and internal problems. Early results show that gases are developed in the
form of tiny bubbles that are not quickly absorbed into the oil, including gases with high solubility
such as acetylene. Knowledge developed will be used in the development of fuzzy logic expert
system modules that can provide Green-Yellow-Red indication of transformer operating condition.
Report number 1000726, Dynamic Behavior of Gases and Chemicals & On-Line Monitoring of
In-Service Transformer: Laboratory Transformer Simulation Experiments & Field Trials was
published December, 2000.
5. Power Transformer Remaining Life Prediction & Extension
• Furaldehydes in Transformer Oil
A project has been in place since 1994 to develop a correlation between furaldehydes in oil
samples with degree of polymerization (DP) found in paper insulation samples taken from a
significant number of transformers in service. Additional laboratory experimental work has
identified trace chemicals that are an early indication of insulation degradation and could be
sensed through on-line monitoring.
• Frequency Response Analysis (FRA)
A project has been in place since 1994 to develop a correlation between existing winding
conditions and FRA tests before and after internal inspection and reclamping of the same
transformers. The objective was to develop noninvasive field test methods and criteria that can
be used to predict winding condition in the broad variety of existing power transformers without
entering the transformer. Over 40 transformers have had the initial FRA and internal
inspection, and over 20 have had the follow-up FRA test. Results have been applied to assess
the condition of a number of core-form and shell-form transformers. Recent co-sponsored
experiments on a retired 345kV auto-transformer comparing the swept-frequency method and
the impulse method were presented at the EPRI Substation Equipment Diagnostics Conference
VIII held in New Orleans, February 21-23, 2000 (Proceedings: Substation Equipment
Diagnostics Conference, EPRI 1000124, June 2000). A variety of problems were introduced
individually. In general the study showed that both methods, properly applied, are effective and
Minutes page - 76
give similar results. Current work includes the field assessment of the in-situ, on-line impulse
technique and the off-line swept frequency method to determine the feasibility of comparing
signatures from one technique with signatures from the other, for the assessment of winding
movement.
6. Transformer Expert System - XVISOR
Objective of this project is to capture the knowledge of transformer experts and make it usable in
an off-line software tool for evaluation of transformer design questions, condition assessment,
problem diagnosis, and identification of maintenance needs. XVISOR Version 1.0 is available to
EPRI Substations O&M members. An LTC module for this software has been developed and is
currently under beta test. It is expected to be available in September, 2001.
7. Guidelines for Life Extension of Substations
These guidelines, now published in Final Report TR-105070 dated April 1995, include a large
section on transformer inspection, condition assessment, testing, and maintenance practices. An
extensive update and extension, Guidelines for the Life Extension of Substations (CD-ROM
Version), EPRI 1000032 is now available to O&M members.
8. Low Maintenance LTC
Work is completed to identify and categorize specific LTC problems, causes and
populations involved; evaluate existing mitigation measures; and identify R&D needed to achieve
substantial reduction in LTC maintenance requirements. A workshop was held November
1996 in Tampa, FL. to provide a forum for discussion of LTC problems / maintenance / and
ways to improve reliability and reduce maintenance. Proceedings were published in TR-108398
dated June 1997. Two EPRI projects to improve understanding of contact coking, oil filtration
effectiveness and monitoring concepts were recently completed. Further work is on going
regarding coking, filtration, contact material effectiveness, the development of oil characteristic
signatures for normal and abnormal operation, and novel methods for on-line monitoring.
9. Continuous On-Line Oil Filtration
The objective is to develop or adopt technologies for a passive on-line filter for mounting on
transformers to continuously remove moisture, oxygen and oil degradation products to keep oil in
pristine condition and thus retard the aging of the cellulose insulation. Laboratory experimental work
has been completed. Full-scale simulation tests are in process, and a field demonstration is planned
in the next few months. A patent for a special purpose filter designed for the removal of moisture,
oxygen, and certain other chemicals has been allowed and will be issued soon. The next step will be
commercialization.
10. Environmentally Acceptable Transformer Oils
Minutes page - 77
Objectives are to 1) review the state-of-the-art of dielectric fluids, 2) perform laboratory tests &
simulations on available candidate fluids for transformer application, and 3) demonstrate promising
fluids in operating transformers. Laboratory tests & simulations have been completed on 12
candidate fluids. Report number 1000438, Environmentally Acceptable Transformer Fluids:
Phase I State-of-the-Art Review; Phase II Laboratory Testing of Fluids was published
December, 2000
10.2 SCC4 - P. A. Payne
No report was provided for the minutes.
10.3 TC 14 TAG - P. J. Hopkinson
Minutes: Technical Advisory Group for TC14
Place of Meeting: Hilton Amsterdam
Amsterdam, The Netherlands

Date & Time of Meeting: Tuesday, April 10, 2001
1:30 PM
Members Present
R. DelVecchio Waukesha Electric
D. Foster Olsun Electrics Corp
B. Henning Waukesha Electric
P. Hopkinson Square D Company
A. Jonatti Consultant
S. Kennedy Niagara Transformers
W. Patterson ABB Power T & D Company
P. Payne PEPCO
J. Puri Square D Company
M. Rajadhyaksha VANTICO
H. Jin Sim Waukesha Electric
Minutes page - 78
L. Wagenaar American Electric Power Co

Members Absent
C. Conlopy
J. Cockran
J. Foldi
R. Girgis
C. Johnson
J. Smith
T. Traub
Others Present
C. Bush PEMCO Corp
T. deCourcelle IEEE
J. Duart DuPont Inc
K. Eckholz Siemens PTD
J. Fyvie VA Tech Transformers
D. Keithly Siemens Power T & D
J. Lackey Ontario Power Generation
D. MacMillan Tech-Tran Corp
M. McDermott Consultant
S. Metha Waukesha Electric
H. Nordman ABB Transformer
P. Riffon Hydro-Quebec
W. Schwartz Square D Company
B. Simpson Quin-T (TC98 Liaison)
H. Smith PEMCO Corp
R. Wicks DuPont Inc
J. Gauthier NEMA Staff
Presiding Officer: P. Hopkinson, Technical Advisor
Minutes page - 79
I. APPROVAL OF PREVIOUS MINUTES

The minutes for the meeting held 16 October 2000 were approved as submitted.
II. MEMBERSHIP
III. OLD BUSINESS
A. The chairman noted that our meetings are open to all interested participants
including our friends from other countries.
B. Review of Recent TC14 Documents
The chairman noted that IEC and USNC have moved to providing all
documents electronically and that members should be alerted to that reality in
responding the requests for comments on those documents.
The chairman urged members to review the US comments on TC14
documents and provide any additional comments they feel necessary to
amplify the US position if necessary.
It was noted that IEC documents addressing transformer matters tend to
address equipment methodologies and not to equipment requirements. This
approach to standards provides some unique challenges for the US in
participating in the process – by concentrating on methodologies and possible
conflict. It was noted that harmonization of standards does not mean the
standards should be identical but does mean that there should be no conflicts.
The chairman engaged in a review of each document current under
consideration in TC 14:
• 14/388/CDV: Power Transformers, Part 4: Guide to lightning impulse

and switching impulse testing.
• 14/389/CDV: Power Transformers, Part 10: sound levels

It was reported that the US proposed that an explanation on the
calculation be included in the document. The matter is under
consideration in the committee secretariat. It was pointed out that Jeewan
Puri is the only US expert on sound levels and provided the basis for US
comment on the document.
• 14/391/CD: Power Transformers, Part 11: Dry-Type Transformers

It was noted that the partial discharge test should permitted to make partial
discharge tests on the unit. The IEC WG position is the requirement for an
impulse test. It was also noted the functional life of the insulation system –
using a fire test -- was a matter of difference. The US position is the fire test is
not a function of the insulation systems.
Minutes page - 80
Additional technical discussion ensued. It was pointed that the IEC

document specifies a negative impulse wave; noting that the transformer is
subjected to greater stress using a positive impulse wave.
(The Technical Advisor agreed to make additional comments to add positive

impulse tests to replace the negative impulse test requirement.)
Members engaged in an additional discussion of the IEC requirement in

NOTE to clause 21, noting that the mismatch suggested in the terminology
should be investigated. It was noted that the US is proposing that the text be
more clearly stated that any mismatch should be investigated
It was recommended that a NWP be sent to TC98 which is responsible for
electrical insulation systems. W. Simmons agreed to provide an email to the
chairman.
• 14/392/CD: Tap Changers

It was noted that this document contained some editorial issues and that
insulation rating information was too vague. Specific recommendations were
provided. Also recommended is the inclusion of the functional life test, an
action which is being undertaken in the C57 family of documents. Such action
would result in a closer harmonization of the US and IEC documents.
During additional discussion, it was noted that there are no routine test
allowed for testing tap changers and that a recommendation has been made
for a routine dielectric test. There is a suggestion that such a test could be
included as a special one. Members engaged in a brief discussion of
proposals to include certain routine and type tests to the IEC document. It
was noted that some manufacturers were opposed to the inclusion of
additional routine tests in the IEC standard. It was recommended that this
problem could be solved by developing type categories of no-load tap
changers be established and the requirements thereby identified. It was
further noted that it is important for the user to specify the specific rating
requirements.
In additional discussion on functional life test, it was noted that its purpose is
to simulate accelerated ageing by subjecting the device to tests at twice rated
load. The chairman reviewed the results of tests he conducted using various
contact metals in mineral and in silicone liquids. The only stable contacts
were silver on silver in silicone and mineral oil. The silver was plated over
copper.
• 14/385/NP: “Immersed distribution Transformers with Protection and

Current Breaking Devices”
It was noted that US C57.12.20 be used by the IEC and that this activity
was likely to be shared with IEC TC17 and TC 14. After further discussion, it
was noted that C57.12.24 may be a more appropriate reference document.
• A brand new working group has been purposed by the chairman to the
IEC to develop a guide for the use of high temperature insulation materials
Minutes page - 81
in liquid filled transformers. The proposal will be modified to change the

proposed convenor to Rick Merick.
A. Additional Issues
It was noted that TC14 is about to undertake work on short circuit
calculations. The chairman expressed an interest in pursuing that matter and
that Bob Delvecchio would be participating in the process as the US expert.
C. NEW BUSINESS
There was no new business.
D. TIME AND PLACE OF NEXT MEETING
Members agreed to meet in conjunction with the IEEE Transformer Committee
meeting in Orlando, Florida in October 2001.
E. ADJOURNMENT
There being no additional business, the meeting was adjourned at 2:45 PM.
Reported by
John A. Gauthier
TAG Adminstrator
Minutes page - 82
11.0 Old Business
None
12.0 New Business
Two items of new business were discussed and they are:
Don Fallon brought to light the dwindling number of users attending the meetings and suggested a letter
needs to be written to give to management to encourage their support in employees participating in these
meetings. Don said he would talk with committee officiers about this and try and draft a letter before
the next meeting. It was also brought out the efforts being done by PES to address this problems at a
higher level in utilities.
Another issue of discussion was the effort to get the minutes out earlier than in the past. It was also
talked about going to 100% electronic on the minutes and not send out any paper minutes. This most
likely will be the way in the fiture but for now paper will continue to be sent out. An effort will be made
to get minutes out earlier next time.
13.0 Adjournment
The meeting was adjourned at 11:30 AM.
Ken S. Hanus, Secretary
Minutes page - 83
Attachment 3
Minutes page - 84
Attachment 4
St.Louis Little R Leon, MX NO, LA Monterrey Nash, TN Niagara F. Amster.

GROUPS Nov.97 Apr. 98 Nov. 98 Apr. 99 Nov. 99 Apr. 00 Oct 00 Apr01 MAX AVG
Committee Registration: Members and Guests 282 267 262 262 275 302 361 265 361 285
Spouses 32 34 49 35 94 94 67 94 58
Luncheon 147 156 262 262 216 175 217 131 262 196
SC ADMINISTRATIVE 19 16 19 22 23 23 22 18 23 20
NEWCOMERS ORIENTATION
SC Meeting and planning 15 15 15
SC AUDIBLE NOISE AND VIBRATION 22 32 23 28 31 21 21 17 32 24
WG Sound measurements
WG Transformer siting guide C57.136
SC BUSHINGS 23 32 25 11 27 28 28 28 32 25
WG Revision C57.19.00 36 22 23 25 38 25 38 28
TF Draw Lead Bushings 21 23 23 20 16 24 27 18 27 22
WG Revision C57.19.01 24 33 38 24 22 19 38 27
SC DIELECTRIC TESTS 71 81 80 52 68 91 96 62 96 75
WG Revision to Low FrequencyTests 31 42 20 54 48 34 54 38
WG Revision of Transient Dielectric Tests 20 35 43 37 43 34
TF Rev. to Impulse Tests 13
TF L.F. Transformers Dielectric Test Table 28 37 46 60 46 43
WG Partial Discharge Tests 43 51 58 41 66 47 66 65 66 55
SC DISTRIBUTION TRANSFORMERS 37 49 29 36 34 53 41 53 40
WG Dist. Substation Transformers C57.12.36 16 22 40 37 40 29
WG Overhead Type Distr. Transfs. C57.12.20 39 19 35 28 49 39 49 35
WG Single-Phase Submersible C57.12.23 41 16 10 20 18 41 21
WG Single-Phase Deadfront Padmount C57.12.25 35 41 30 47 47 38
WG Bar Coding 25 40 40 33
WG Loss Evaluation C57.12.33 55 48 45 55 49
WG Electronic Data Transmittal 20 12 22 22 19
WG Three-Phase Padmount C57.12.34 23 42 42 33
WG Step-Voltage and Induction Regs C57.15 26 16 9 26 17
SC DRY-TYPE TRANSFORMERS 32 22 26 27 25 25 31 20 33 26
WG Test Code C57.91 20 23 20 22 18 11 24 12 23 19
WG Dry-Type Reactors 7 9 6 13 9 10 11 13 13 10
WG Dry-Type Thermal Eval. And Flammability 24 24
WG Dry-Type General Requirements C57.12.01 30 28 24 18 26 23 23 14 30 24
WG Dry-Type Thru Fault Current C57.12.59 15 16 16 23
16
Minutes page - 85
Attachment 4
St.Louis Little R Leon, MX NO, LA Monterre Nash, TN Niagara Amster.

GROUPS Nov.97 Apr. 98 Nov. 98 Apr. 99 Nov. 99 Apr. 00 Oct. 01 Apr01 MAX AVG
SC HVDC CONVERTER TRANF. & REACTORS 6 6 7 8 13 7 19 15 19 8
IEC TC 14 TAG 37 30 37 34
SC INSTRUMENT TRANSFORMERS 10 13 7 11 10 10 17 13 11
WG C57.13.5 Test Req Instr Transf >115 kVA 13 20 13 12 13 10 13 13 20 13
WG C57.13.6 Instr Transf for Electronic Meters & Relays 9 20 11 20 13
WG Revision of C57.13 10 17 8 12 10 10 17 11
SC INSULATING FLUIDS 71 84 71 56 68 75 66 84 70
SC INSULATION LIFE 55 73 58 65 56 51 66 30 73 57
WG Loading Liq. Transformer 108 58 108 83
WG Revision of Temperature Test Code 24 24 29 29 26
WG Thermal Duplicate 30 34 24 34 40 27 30 40 31
TF Winding Temperature Indicators 26 32 22 16 25 27 28 32 25
SC PERFORMANCE CHARACTERISTICS 74 77 52 45 58 69 82 81 82 67
WG Loss Tolerance and Measurement 18 27 25 26 29 33 37 29 37 28
WG PCS Rev. C57.12.00 19 36 32 75 65 49 70 37 75 48
WG PCS Rev. C57.12.90 21 33 43 28 42 65 34 65 38
TF Joint/PSIM low pf measurement
WG Switching Transients 22 31 33 40 0 52 49 39 52 38
WG DETC specifications and tests 50 49 40 50 46
SC POWER TRANSFORMERS 26 25 42 59 66 109 80 109 58
WG LTC Performance 34 31 29 25 30 24 21 29 34 28
WG C57.140 Transformer Life Extension 31 46 62 48 35 62 44
WG Monitoring of Liquid Immersed Transformers 66 83 42 20 54 55 70 70 56
TF Control Cabinet Guidelines
WG Revision of C57.12.10 37 30 27 37 31
WG West Coast 13 13 13
WG Installation of Liquid Filled Transformers, C57.93 39 39 39
WG Phase Shifting Transformers C57.137 26 43 30 31 34 26 45 25 45 33
SC STANDARDS 11 4 5 23 38 32 38 19
Standards Development Paractice Review 8 8
SC UNDERGRND. TRANF. & NETWK. PROTCS. 13 11 14 18 21 26 18 3 26 16
WG Three-Phase Underground Transfs. C57.12.24 13 14 16 10 14 27 15 4 27 14
WG Liquid-Filled Sec. Network Transfs. C57.12.40 16 16 16 17 15 16 15 17 16
WG Secondary Network Protectors C57.12.44 16 12 9 12 10 14 16 12
WG Dry-Type Network Transfs. C57.12.57 5 7 5 10 10 15 10 9
Note: Data maintained for four years only. Filename=tcattend.xls
Minutes page - 86

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IEEE/PES

April 12, 2001

Amsterdam, The Netherlands

AMSTERDAM, THE NETHERLANDS

APRIL, 12, 2001

ATTENDANCE SUM MARY

Anderson, Greg Antosz, Steve Artega, Javier Balma, Peter

Aho, David Allan, Dennis Allustiarti, Raymond Anderson, Glenn

1.0 Chairs’s report, remarks & announcements – B. K. Patel

1.1.1 Chair’s report

The following is a highlight of the report:

Significant Accomplishments in 2000:

Benefits to Industry from the 2000 Work:

1. The exchange of technical information in technical papers and educational formats.

2. The preparation and maintenance of industry standards.

Benefits to Volunteer Participants from the 2000 Work:

• Healthy interaction between industry engineers and academic researchers

Recognition of Outstanding Performance:

Significant Plans for 2001:

Council. The two new committees are:

• Energy Policy and Markets Committee

• Emerging Technologies Committee

Two points of particular note:

• PS Communications is formulating thoughts on a thorough restructuring to include

Problems and Concerns:

Particular committee comments:

1.1.2 Future meeting changes

Teddy Puttgen reported the following:

1.2 Transformers Committee report to Technical Council

1.2.1 Committee meeting activities

The Committee goals are to encourage open participation in transnationalization of transformer

1.2.2 2001 Winter Power Meeting technical sessions

1.2.3 Transformer standards and coordination activities

1.2.4 Other noteworthy activities

Bipin K. Patel, Chair

3.0 Administrative Subcommittee – Bipin K. Patel

3.1 Introduction of members and guests

The following members of the Subcommittee were present:

The following guests were present:

3.2 Approval of the Niagara Falls meeting minutes

3.3 Additions to and/or approval of the agenda

to the O&P manual.

3.5 IEEE delegation report ANSI C57 Committee – J.W. Matthews

Affirmative ballots were returned for the following:

• PC57.12.59/D3.2 Revision: “Guide for Dry-Type Transformer Through-Fault Current Duration”

• PC57.12.80/D3 Second Recirculation: “Standard Terminology for Power and Distribution

• PC57.93 Reaffirmation: “IEEE Guide for Installation of Liquid-Immersed Power Transformers”

• PC57.123/D1.7: “Guide for Transformer Loss Measurement”

Abstention ballots were returned for the following:

• C57.12.32/D4 “Enclosure Integrity for Submersible Equipment”

3.5.2 Processes for development of NEMA copyrighted C57 documents

These actions will be effective immediately.”

3.5.3 Present roster

• Matthews, J. W., Baltimore, MD - Chair, IEEE Delegation

• Borst, J. D., Jefferson City, MO

• Hanus, K. S. (alternate), Fort Worth, TX

• Patel, B. K., Birmingham, AL

• Prevost, T. A., St. Johnsbury, VT

• Sim, H. J., Goldsboro, NC