IEC Numeros Normas Nuevos
IEC Numeros Normas Nuevos
IEC Numeros Normas Nuevos
INTERNATIONAL
STANDARD
IEC
62271-105
First edition
2002-08
Reference number
IEC 62271-105:2002(E)
INTERNATIONAL
STANDARD
IEC
62271-105
First edition
2002-08
PRICE CODE
For price, see current catalogue
62271-105 IEC:2002
CONTENTS
FOREWORD .......................................................................................................................... 7
1
General ..........................................................................................................................13
Definitions ......................................................................................................................15
62271-105 IEC:2002
62271-105 IEC:2002
International Standard IEC 62271-105 has been prepared by subcommittee 17A, High-voltage
switchgear and controlgear, of IEC technical committee 17: Switchgear and controlgear.
This first edition cancels and replaces the second edition of IEC 60420, published in 1990,
and constitutes a technical revision. A reference table to explain the new numbering in this
series is provided at the end of this foreword.
The text of this standard is based the following documents:
FDIS
Report on voting
17A/633/FDIS
17A/640/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 3.
This standard should be read in conjunction with IEC 60694, second edition, published in
1996, to which it refers and which is applicable, unless otherwise specified. In order to
simplify the indication of corresponding requirements, the same numbering of clauses and
subclauses is used as in IEC 60694. Amendments to these clauses and subclauses are given
under the same numbering, whilst additional subclauses are numbered from 101.
62271-105 IEC:2002
reconfirmed;
withdrawn;
replaced by a revised edition, or
amended.
New numbering
In accordance with the decision taken at the joint SC 17A/SC 17C meeting in Frankfurt, June
1998 (item 20.7 of 17A/535/RM), a common numbering system will be established of the
standards falling under the responsibility of SC 17A and SC 17C. IEC 62271 (with the main
title of High-voltage switchgear and controlgear) is the basis of the common standard.
The numbering of these standards will apply the following principle:
a) Common standards prepared by SC 17A and SC 17C will start with IEC 62271-001;
b) Standards of SC 17A will start with IEC 62271-100;
c) Standards of SC 17C will start with IEC 62271-200;
d) Guides prepared by SC 17A and SC 17C will start with IEC 62271-300.
The following table provides an overview of the relationship between the old and new
numbering.
62271-105 IEC:2002
11
Part
Original title
Old
IEC number,
if any
001
60694
100
60056
101
60427
102
60129
103
60265-1
104
60265-2
105
60420
106
60470
107
New
108
New
109
200
AC metal enclosed switchgear and controlgear for rated voltages above 1 kV and up
to and including 52 kV
60298
201
60466
202
61330
203
60517
204
Rigid high-voltage, gas-insulated transmission lines for rated voltages of 72,5 kV and
above
61640
300
61166
301
61233
302
61633
303
61634
304
60932
305
60859
306
61639
307
62063
308
62215
* The table is subject to change pending the transfer of technical reports to standards.
62271-105 IEC:2002
13
1
1.1
General
Scope
This part of IEC 62271 applies to three-pole units for public and industrial distribution systems
which are functional assemblies of switches including switch-disconnectors and currentlimiting fuses designed so as to be capable of
breaking, at the rated recovery voltage, any current up to and including the rated shortcircuit breaking current,
making, at the rated voltage, circuits to which the rated short-circuit breaking current
applies.
This standard applies to combinations designed with rated voltages above 1 kV up to and
including 52 kV for use on three-phase alternating current systems of either 50 Hz or 60 Hz.
Fuses are covered by IEC 60282-1.
62271-105 IEC:2002
15
Switches, including their specific mechanism, should be in accordance with IEC 60265-1
except for the short-time current and short-circuit making requirements where the currentlimiting effects of the fuses are taken into account.
Earthing switches forming an integral part of a combination are covered by IEC 62271-102.
1.2
Normative references
Common
specifications
for
high-voltage
switchgear
and
controlgear
IEC 60787:1983, Application guide for the selection of fuse-links of high-voltage fuses for
transformer circuit applications
IEC 62271-100:2001, High-voltage switchgear and controlgear Part 100: High-voltage
alternating-current circuit-breakers
IEC 62271-102: 2001, High-voltage switchgear and controlgear Part 102: High-voltage
alternating current disconnectors and earthing switches
Definitions
For the purposes of this part of IEC 62271, the definitions of IEC 60050(441) and IEC 60694,
as well as the following definitions, apply.
Some of them are recalled hereunder for easier use.
3.1
General terms
None.
3.2
Assemblies
None.
3.3
None.
Parts of assemblies