DGMS 2010 CEA Regulation PDF
DGMS 2010 CEA Regulation PDF
DGMS 2010 CEA Regulation PDF
[ '111T I I I - = 4 l 189
Chapter I
1. Short title and Commencement.- (1) These regulations may be called the
• . Central Electricity Authority (Measures relating to Safety and Electric Supply)
Regulations, 2010.
(2) They shall come into force on the date of their final publication in the Official
Gazette. .
insulated from one another and are disposed over the insulation of, and more or
less around, the inner conductor;
(j) ..conductor" means any wire, cable, bar, tube, rail or plate used for
conducting electricity and so arraµged as to be electrically connected to a
system;.
(k) "conduit" means rigid or flexible metallic tubing or mechanically strong
and fire resisting non-metallic tubing into which a cable or cables may be
drawn for the purpose of affording it or them mechanical protection; ·
(I) "connected load" means ·the sum of the ratings of the electricity
consuming apparatus connected to a consumer's installation; ·
(m) "covered, with insulating material" means adequately covered with ·
insulating material of such quality and thickness as to prevent danger; . ·
(n) "cut out" means any appliance for automatically interrupting the
transmission of electricity through the conductor when the current rises above a
pre-determined amount, and shall also include fusible cut-out;
{o) "danger" means danger to health or danger to life or any part of body
. from shock, burn or other injury to persons, or property, or from fire or
explosion, attendant upon the generation, · transmission, transformation,
conversion, distribution or use of electricity;
(p) "dead" means at or about earth potential and disconnected from any live
system. It is used only with reference to current carrying parts when these parts
are not live.
(q) "designated person" mear1s a person designated under regulation 3;
(r) "earthed" or "connected with earth" nieans connected with the general
mass of earth in such manner as to ensure at all times an immediate discharge
of electricity without danger;
{s) "earthing system" means an electrical system in which all the conductors
and appliances are earthed;
(t) "enclosed sub-station" means any .premises or· enclosure or part thereof,
being large enough to admit the entrance of a person after the apparatus therein
is in position, containing apparatus for transforming or converting electricity to
or from a voltage at or exceeding 650 V (other than transforming orconverting
solely for the operation of switch gear or instruments) with or without any other
apparatus for switching, controlling or otherwise regulating the electricity, and
includes the apparatus therein;
(u) "enclosed switch-station" means any premises or enclosure or part thereof,
being large enough to admit the entrance of a person after the apparatus therein
is in position, containing appan.itus · for switching, controlling or otherwise
regulating electricity at or exc~eding 650 V but not for transforming or
converting electricity(other than for transforming or converting solely for the
operation.of switchgear or instruments)and includes the apparatus therein,
{v) "flameproof enclosure" means an enclosure for electrical machinery or
·apparatus that will withstand, when the covers, or other access doors are
properly secured, an internal explosion of the inflammable ·gas or vapour
which_ may enter or originate inside the enclosure, without suffering damage
and without communicating the . infternal flammation {or explosion) to the
external inflammable gas or vapour in which it is designed to be used, through
any joints or other structural openings in the enclosure; ·
(w) "flexible cable" means a cable consisting of one or more cores each formed
of a group of wires, the diameter and the physical properties of the wires and .
ins~lating material being such as to afford fl'exibility. ·
[ '11'1 I I I - ~ 4] 191
(zo) "overhead line" means any electric supply line which is placed above
ground and in the open air but excluding live rails of a traction system;
(zp) "owner" means the company or body corporate or association or body of
individuals, whether incorporated or not or artificial juridical person which
owns or operates or maintains Electric Plants and Lines;
(zq) "owner", "agent" and "manager'' of a mine have the same meanings as
are assigned to them in the Mines Act,1952(35 of 1952);
(zr) "poles" means the phase terminals of a Switch.
(zs) "portable apparatus" meaI)S an apparatus which is so designed as to be
capable of being moved while in operation;
(zt) "portable hand lamp" means a portable light-fitting provided with suitable
handle, guard and flexible cord connected to a plug;
(zu) "Schedule" means a schedule to these regulations.
(zw) "section" mearts a Section of the Act;
(zv) "span" means the horizontal distance between two adjacent supporting
points of an overhead conductor;
{zw). "street box" means a totally enclosed structure, either above or below
ground containing apparatus for transforming, switching, controlling or
otherwi8e regulating electricity;
(zx) "supplier" means any generating company -or licensee from whose
system electricity flows into the system ofanother generating company or
licensee or consumer;
(zy) "switch" means a manually operated device for opening and closing or for
changing the connection of a circuit;
(zz) "switchboard" means an assembly including the switchgear for the control
of electrical cjrcuits, electric connections and the supporting frame;
(zza) "switchgear'' shall denote_ switches, circuit breakers, cut-outs and other
apparatus used for the operation, regulation and control of circuits;
(zzb) "system" means an electrical system in which all the conductors and
apparatus are electrically connected to a common source of electric supply;
(zzc) "transportable apparatus" means apparatus which is operated in a fixed
position but which is so designed as to be capable of being moved readily from
one place to another;
(zzd) "volt" means a unit of potential difference of electro,motive force and is
the difference of electric potential which exists between two points of a
conductor carrying a constant current of one ampere, when the power
· dissipated between these points is one watt; .
(zze) ''voltage" means the difference of electric potential measured iti Volts
between any two .conductors or between any part of either conductor ,and the
earth as measured by a voltmeter meeting Indian Standards;
(zzt) "watt'' is a unit of active power and 0MW" means megawatt and,is equal
to 106 watts. ·
(2) Words and expressions used and not defined in these regulations but defined in
the Act shall have the meanings respectively assigned to them in the Act.
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Chapter II
3. Designating person(s) to operate and carry out the work on electrical lines
0
and•. apparatus.- (1) A supplier or a· consumer, or the owner, agent or manager of
a mine, or the agent of any company operating in an oil-field or the owner of a
drilled well in an oil field or a contractor who has entered into a contract with a
• Sllpplier or a consumer to carry out duties incidental to the generation,
transformation, transmission, conversion, distribution or use of electricity shall
designate persons for the purpose to operate and carry out the work on electrical
lines and apparatus.
(2) The supplier or consumer, or the owner, agent or manager of a mine, or the
agent of any company operating in an oil-field or the owner of a drilled well in an-
oil field or a contractor referred to on sub-regulation (1) shall maintain a'register
wherein the names of the designated persons and the purpose for which they are
engaged, shall be entered ·
(2) If on inspection, the Electrical Inspector finds that the designated person does
not fulfill the required qualification, he shall recommend the removal of the name
of such persons from the register..
(2) The. Electrical Safety Officer shall be an Electrical Engineering degree holder
with at least ten years c,f experience in operation and. maivtenance of electricity
plarits or ari Electrical Engineering Diploma holder with at least fifteen yeara of
experience'i,_n operation and maintenance of electric plant. ·
(3) The Ele~trical Safety Officer designated un.der sub-regulatio·n· (I), shall ensure
periodic inspection of such installations, get them tested and keep a record thereof
and such records shall be made available to the Electrical Inspector if and when
required.
(4) For every factory registered under Factory Act, 1948, where mere than 250
kW of electrical load is connected, the management of the factory shall designate a
person having qualification specified in sub-regulation (2), for ensuring the
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194 'fHE GAZETTE OF INDIA : EXTRAORDINAR:Y [PARr Ill-Sa:. 4]
observance of the safety provisions laid under 't he Act and the regulations made
thereunder, who shall periodically inspect such installation, get them tested and
keep a record thereof and such records shall' be made available to the E,lectrical
Inspector if and when·required. · · ·
Provided that the existing employees shall have to undergo the training
mentioned in sub-regulation,(3) within. three years from the date of coming into
force of these _regulations. ·
(4) The owner of every thermal power generating station aod hydro power plant·
tQgether with their aSS-Ociated sub-station shall arrange for training of personnel
engaged in the operation and maintenance of his generating station. along with
associated s.ub-statioo in his own institute or any other institute recognized by the
Central Government or the State Government.
(2) 11te Technicians to assist engineers or supervisors shall possess a certificate in•
appropriate trade, preferably with a two year~ course· from a Industrial Training
Institute recognized by the Central Government' or State Government.
' ' '
. . Provided that the existing employees shall have to undergo the training
mentioned in sub-regulation (3) within three years· from the date of coming into
force ·of these regulations.
[ 'WT IIl-11il'ls 4] 195
(4) Owner of every transmission or distribution system shall arrange for training of
their personnel engaged in the operation and maintenance of transmission and
distribution system in his own institute or any other institute recognized by the
Central Government or State Government.
(2) The Electrical Inspector shall supply a copy of the report of inspection referred
to in sub-regulation (I), to the generating company or licensee, as the case m.ay be.
9. Deposit of maps. - When : . iumse has been granted, two sets of maps showing, as
regards such Jicerisee, the particulars specified in application for licemse .shall be
signed and elated to correspond with the date of notification of the grant of the
license by an officer designated by the Appropriate Commission in this behalf, one
set of such maps shall be retained by the said officer and the other one shall be
furnished to the licensee.
10, Deposit of printed copies.- (I) Every person who is granted a license, shall,
within thirty days of the grant thereof, have copies of the license and maps,
showing the area of supply as specified in the ·license to Exhibit I same for public
inspection at all reasonable times at his head office, his local offices, if any, and at
the office of every local authority. within the area of supply.
(2) Every such licensee shall, within the aforesaid period of thirty days, supply
free of charge one copy of the license along with the relevant maps to every local
authority within the area of supply and shall also make necessary arrangement for
the sale of printed copies of the license and maps to all persons applying for t]le
same, at a price to be notified by the Appropriate Government from time to time.
11. Plan for area of supply to be made and kept open for inspection.- (I) The
licensee shall, after commencing to supply electricity, forthwith cause a plan, to be
made in electronic form, of the· area of supply, and shall cause to be marked
thereon the alignment and irt the case of underground works, the approximate
depth below the surface of all the existing electric supply lines, street distributing
boxes and other works, and shall once in every year cause that plan to be. duly
·corrected so as to show the electric supply·lines, street distributing boxes amd other
works for the time being in position and shall also, if so required by an Electrical
Inspector, cause to be made sections showing .the approximate level of all his
existing underground works other than service lines.
(2) Every plan· shall .be _clrawn to such horizontal· and vertical scale as the
Appropriate Commission may t.~quire.
Provided that no scale shall be required unless maps of the locality on that
scale are for the time being available to the public. ·
(3) Every plan and-section so made or corrected, or a copy thereof, marked with
the date when it was made or corrected; shall be kept by the licensee at his
196 THE GAZETTE OF INDIA : EXTRAORDINARY [PART III-SEC. 4] •
principal office or place of business within the area of supply, and shall at. all
reasonable times be open to the inspection of ail applicants, and copies thereof
shall be supplied.
Provided that ex1stmg ahd old plans and sections and underground
distribution network shall be converted to electronic form within three years from
the·date of commencement of these regulations.
(4) Global Positioning System (GPS) rnapping\;r mapping through any other
·latest technology, of existing and old plans and sections shall be comple\ed within
five years from the date of commencement of these .regulations and new plans and
sections shall be compatible to the Global Positioning System mapping or
mapping through any other latest technology.
(5) The licensee shall, if required by an Electrical Inspector, and, where the
licensee is not a local authority, by the focal authority, if any, concerned, supply
free of charge to such Electrical Inspector or local authority a duplicate copy of
every such plan or section or a part of the same du1y conected.
(6) The copies of plans and sections under this regulation shall be supplied by the
licensee to every applicant on the payment of such · fee as the Appropriate
Commission may, by regulation, specify.
Chapterm
Generalsafety requirements ,
(2) Save as otherwise provided in these regulations, the relevant code of practice
of the Bureau of Indian Standards or National· Electrical Code, if any, may be
followed to carry out the purposes of this regulation and in the event of any
inconsistency, the provisions of these regulaions shall prevail. ·
(3 ) The material and apparatus used shall conform to the relevant specifications of
the Bµreau of Indian Standards or International Ele!ctro-Technical Commission
where such specifications have already been laid down.
(4) All electrical equipment shall be installed above the Mean Sea Level (MSL}as
declared by local Municiple Authorities and where such equipment is to be
installed in the basement, consumer shall ensure that the design of the basement
[ "11'1 I I I - ~ 4] 197
13,, Service Hnes and apparatus on consumer's premises.- (1) The supplier shall
ensure that all electric supply lines, wires, fittings and apparatus belonging to him
or under his control, Which are on a consumer's premises, are in a safe-condition
and in all respects fit for supplying electricjty and the supplier shall take
precautions to avoid danger arising on such premises from such supply' lines,
wires, fittings and apparatus.
(2-) Service lines placed by the supplier on the premises of a consumer which are
underground or which are accessible shall be so insulated and protected by the
supplier as to be secured under all ordinary condi!ions against electrical,
mechanical, chemical or other injury to the insulation,
(3) The consumer shall, as far as circumstances permit, take precautions for the
safe custody of the equipment on his premises belonging to the supplier.
(4) The consumer shall also ensure that the installation under his control is
maintained in a safe condition..
14, Switchgear on consumer's premises.- (I) The supplier shall provide a suitable
switchgear in each conductor of every service line other than an earthed or earthed
\ \ neutral conductor. or the earthed external conductor of a concentric cable within a
consumer's premises, in an accessible position and such switchgear shall be
contained within an adequately enclosed fireproof receptacle:
(2) Every electric supply line other than the earthed or earthed neutral conductor
a
of any system or the earthed external conductor of concentric cable shall be
protected by a suitable switchgear by its owner.
15. Identification of earthed and earthed neutral conductors and position. of.
switches and switchgear therein.- ·· Where the conductors include an earthed·
.conductor of a two-wire system or an earthed neutral conductor of a multi-wire
sys.tern or · a conductor which is to be connected thereto, the following conditions
shall be complied with:- · ·
(a) where the earthed or earthed neutral conductor is the property of the
supplier, at or near the point of commencement of supply; .
198 THE GAZETTE OF INDIA : EXTRAORDINARY [PART III-SEC. 4]
Provided that the above requirement shall not apply in case of-
(a) a link for testing purposes, or
(b) a switch for use in controlling a generator or transformer.
16. Earthed terminal on consumer's premises.- (1) The supplier shall provide and
maintain on the consumer's premises for the consumer's use, a suitable earthed
terminal in an accessible position at or near the point of commencement of supply.
Provided further that the supplier may not provide any earthed terminal in
ihe case of installations already connected to his system on or before the date to be
specified by the State Government in this behalf if he is satisfied that the
consumer's earthing arrangement is efficient.
(2} Toe consumer shall take all reasonable precauti_ons to prevent mechanical •
damage to the earthed terminal and its lead belonging to the supplier.
(3) The supplier may_ recover from the consumer the cost of installation on the
-basis of schedule of charges published by him in advance and where such schedule
of charges is not published, the procedure laid down, in regulation 63 shall apply.
(b) provide in readily accessible position switches for rendering them dead
whenever necessary; and
(c) take such other safety measures as are specified in the relevant Indian
Standards.
18. Danger Notices.- The owner of every installation of voltage exceeding 250 V shall
affix permanently in a conspicious position a danger notice in Hindi or English and
the local language of the District, with a sign of skull and bones of a design as per
IS -2551 on-
(a) every motor, generator, transformer and other electrical plant and
equipment together with apparatus used for controlling or regulating the same;
(b) all supports of overhead lines of voltage exceeding 650 V which can be
easily climbed upon without the aid ofladder or special appliances;
•
(c) luminous tube sign requiring supply, X-ray and similar high frequency
, installations of voltage exceeding 650 V but not exceeding 33 kV:
Explanation- For the purpose of clause (b) rails, tubular poles, wooden
supports, reinforced cement concrete poles without steps, · I-sections and
channels, shall be deemed as supports which cannot be easily climb~d upon
19. Handling of electric supply -lines and apparatus.- (I) Before any conductor or
apparatus is handled, adequate precautions shall be taken, by earthing or other
suitable means, t() discharge electrically si.;ch conductor or apparatus, and any
adjacent conductor or apparatus if there is dai:ger therefrom, and to prevent any
conductor or apparatus from being accidentai!y or inadvertently electrically
charged when persons are working thereon.
(2) Every person who is working on an eiectric suppiy line or apparatus or both
shall be provided with tools and devi~es such as gloves, rubber shoes·, safety belts,
ladders, earthing devices, helmets, line testers, hand lines and the like. for
protecting him from mechanical and electrical injury and such tools and devices
shall always be maintained in sound and efficient working condition.
(3) No persen shall work on any live electric supply line or apparatus and no
·person shall assist such person on such work, unless he is designated in that
· behalf, and takes the safety precautions given in Schedule-III.
200 THE GAZETTE OF INDIA : EXTRAORDINARY
a
(4) Every telecommunication line on supports carrying line of voltage exceeding
650 V but not exceeding 33 kV shall, for the purpose of working thereon, be
deemed to be a line of voltage exceeding 650 V.
(5) AH non~current carrying metal parts of switchgear and control panels shall be
properly earthed and insulating floors or mat conforming to IS-I 5652: 2006, of
appropriate voltage level shall be provided in front of the panels for the safety of
operating personnel.
(6) All panels shall be painted with the description of its identification at front and
at the rear.
20. Supply to vehicles aud cranes.- Every person owning· a vehicle, travelling crane,
or the like to which electricity is supplied from an external source shall ensure that
it is efficiently controlled by a suitable switch enabling all voltage to be cut off in
one operation and, where such vehicle, travelling crane or the like runs on metal
rails, the owner shall ensure that the rails are electrically continuous and earthed.
21. Cables for portable or transportable apparatus.- (!) Flexible cables shall not
be used for portable or transportable motors, generators, transformers, rectifiers,
electric drills, electric sprayers, welding sets or any other portable or transportable
apparatus- unless they are heavily insulated and adequately protected from
mechanical injury.
(2) Where the protection is by means of metallic covering, the covering shall be in
·metallic connection with the frame of any such apparatus and earthed.
(3) The cables shall be three core type and four core type for portable and
transportable apparatus working on single phase and three phase· supply
respectively and the wire meant to be used for ground connection shall be, easily
identifiable.
22. Cables- protected by bituminous materials.- (1) Where the supplier or the owner
has brought into use an electric supply line, other than a~ overhead liue, which is
not completely enclosed in a continuous metallic covering connected with earth
and is insulated or protected in· situ by composition or material of a· bituminous
character,- ·
(i) any pipe, conduit, or the like into which such electric supply line may
have been drawn or placed shal), unless other. arrangements are approved
by the Electrical Inspector in any particular case, be effectively sealed at its_
point of entry into any .sireet box so as to prevent any flow of gas to or·
,from the street box, and;
(ii) such electric supply line shall be periodically inspected and tested
where accessible, and the result of each.such inspection artd test shall be
. duly recorded.by the supplier or the owner.
{2) The supplier or the owner after the coming into force of these regulations, shall
not bring into use any further .electric supply line as aforesaid which is insulated or
[ '11'1 lll--~ 4 J 3)1
23. Street boxes.- (1) Street boxes shall not contain gas pipes, and-precautions shall
be taken to prevent, as far as reasonably possible, ·any influx of water or gas.
(2) Where electric supply lines forming part of different systems pass through the
same street box, they shall be readily distinguishable from one another and all
electric supply lines of voltage exceeding 650 V at or in street boxes shall be
adequately supported and protected so as to prevent risk of damage to or danger
from adjacent electric supply lines. ·
• •
· {3) All street boxes shall be regularly, inspected for the purpose .of detecting the
presence of gas and. if arty influx or accumulation is discovered, the owner shall
give immediate notice to any authority or company who have gas mains in the
neighbourhood of the street box and in. cases where a street box is large enough to
admit the entrance of a person after the electric supply lines or apparatus therein
have been placed in positio_n, ample provision shall be madec
(i) to ensure that any gas which may by accident have obtained access to
the box shall escape before a person is allowed to enter; and
(4) The owners of all street boxes or pillars containing circuits or apparatus shall
ensure that their covers and doors are kept closed and. locked and are so provided
that they can be opened only by means of a key or a special appliance.
24. Distinction of different circuits.- The owner of every generating SF;tion, sub-
station, junction-box or pilladn which there are any circuits or apparatus, whether
intended for operation at different voltages or at the same voltage, shall ensure by
means of indication of a permanent nature that the respective circuits are readily
distinguishable from one another.
25. Distinction of the Installations having more than one feed.- The owner of every
installation including sub-station, double pole structure, four pole structure or any
other structure having more than one feed, shall ensure by means of indication of.a
. permanent nature, that the• installation is readily distinguishable from .· othtr
• . insta)latiorui ·.
26. Accidental charging.- (I) The owners of •all circuits and apparatus shall so.
arrange them that there shall be no danger of any part thereof becoming
accidentally charged to any voltage beyond the limits of voltage for which they aie
intended.
(2) Where alternating current and direct current circuits.are installed on the same
box or support, they shall be so arranged and protected that they shall not come
into contact with each other when live. ·
27. Provisions applicable to protective equipment.- (1) Fire buckets filled with
clean dry sand am! ready for inunediate use for extinguishing fires, in addition to
fire extinguishers suitable for. dealing with fires, shall be conspicuously marked
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202 THE GAZETTE OF INDIA : EXTRAORDINARY [PART Ill-SEC. 4]
(2} .1be fire extinguishers shall be te~d for satisfactory operation ,as per relevant
, •; , .,.· Jndian Standard at least once a year an4 ,record of su<:h iests shal\pe, maintained .
... ,(3) First-aid ~~s or cupboards co~'spicuously tll/U"ked,and eqµipped with such •
' : contents.as the-State. Government may specify, shaHbe provideq and maintained
. in every generating station, enclosed sub-station, enclosed switching 'station and in
vehicles used for Inaintenance ·of lines so as to ):/e rea4ily, ac,ce~ible during all
_< working hours and a!]. such boxes and cupboar.ds 1,~ii]l, eJlcept,ip tlie case of
· .. ,.. unattende.d sub-stations and switching stations, be ,k\lpt ii;t charge of. responsible
persons who are trained in first-aid treatment and one of such pei:sons shall be •
available during working hours.
' . . .. (4} two or rne>re gas n,iasks shall be proviqaj 'c~n§;ic~ou;ly and instilled and
maintained at accessible places in every generating station with capacity of
5 MW and above and enclosed sub-station 'Yitll,.t;i;a11~f<:>rrna,tion capacity of
5 .. MVAand above for use in the event of fire or.smoke:· •
appliances of voltage not exceeding 250V and fittings as in no· way alters its
capacity or character, shall be carried out upon the premises of or on behalf of any
."
consumer, supplier, owner or occupier for the purpose of supply to such consumer,
supplier, owner or occupier except by an electrical contractor licensed in this
behalf by the State Government and under the direct supervision of a person
holding a certificate of competency and by a person holding a permit issued or
recognised by the State Government. ·
. . ' .
Provided that in the case of works executed for o~ on behalf of the
Central . Governmept and•. in the ·.· case of installations in. milies, oil fields and
railways, the Central.Government and in other cases the State Government, may,
by notification in the Official Gazette,· exempt on such conditions as it may
impose, any such work described, therein eith~r generally or in the case of any
specified class of consumers, suppliers, owners· or occupiers. ·
(2) No electrical installation work which has been carried out in contravention of
sub"regulation (I) shall either be energised or connected to .the works of any
supplier.
(3) Where the supplier is directed by the Central or the State Government, as the
.case tnay be, to inspect and test the installation, he shall report on the condition of
the installation to the consumer concerned in the Forms I, II and III as specified in
Schedule-IV and shall submit a copy of such report to the Electrical Inspector;
(4) The Electrical Inspector may, on receipt of such report, accept the report
submitted by the supplier or record variations as the circumstances of each case
•• .
may require and
.
may recommend that the.defects maybe ractified as per report;
. (5) In the event of the failure of the owner of any installation to rectify the defects
in his instal!Btion pointed ont by .the Electrical Inspector in his report and within
the time indicated therein, suchinstallationshall be liable to be disconnected
under the directions of the Electrical Inspector· after serving the owner of such
installation with a notice for not less than forty eight .hours.
31. Testing of consumer's installation.- (1) Upon receipt of lln application for a
new or ·. additional supply of electricity and before connecting the supply or
;,, .. : recQ1111ecting tl,lesa.me after a period,ofsix mo11ths,,t4!l sµppli!lr,sllalle.ither test the
installation Jiimsel(or accept the tesqesµlts. submittetlixJl!i: 99,µsun;ier when the •
,:sanie Iias be~n.du,ly" signed by theJic.:nsed Electric;al C::ontraqt9r.
(2) The supplier shall maintain a record of test results obtained at each supply
point to a consumer, in a Schedule-V.
(3) · Ifas a result of sucli inspection and test, the supplier is satisfied that the
installation is likely to be dangerous, he shall serve. on the app1icant a notice in
writing requiring him to make such modific11ti91!5, as,are,necessary to render the
installation· .safe.· and may refuse to connect or.reconnect the supply until the
..
. reqµired modifications have been completed: : , . .
i .. 32. InstaUatiop ~nd testblg of generating ,µ~;,:, (;11p~tjty l\bo:.,e which generating
units will be required to be inspected by the Electrical Inspector before
commissioning shall be as per the notification to be issued by the Appropriate
Government, under clause (x) sub-section (~}.of sectjon 17~ and sub-section (1 ).of
section 162 of the Act. ' · · ·
Chapter IV
General - conditions
.
relating to supply .,._.,.
and use
. '
nfelectricity
.
33. Precautions against leakage before connection.- O) The supplier shall not
connect with his works .the installation or apparatus on, the ·premises of any •
.11pp)icant for supply unless he is reasonably satisfied that,the c.onnectionwill not at
the .time .of making the connection cause.· a Jeakage. ,. fr-Om that .installation or
apparatus of a magnitude detrimental to safety, which shall be checked by
. ,... measuring the installation resistance as under,• ·
•'
(i) all equipments sha11 have the insulation resistance (IR) va1ue as stipulated
in the relevantlndian Standards; ·· · ··· ·· ' ·
(ii) on application of 500 V DC between each live conductor and earth for a
period of one minute the insulation resistance of installation and equipment of
voltage not exceeding 650 V shall be .atle!lstl MEGAQIIM or as specified •
in the r:elevant Indian Standard; ··· · · · ' · · ,,. · ·
'(iii) on applica.tioii of 2.5 kV· DC betweJn e,achJive' coiid;ctor and earth for •
a period of one minute, the insulatiqficrem~tan~e, o{inst;illation and equipment
'of v'i:!ltagc:i exceeding 650 V but not'ixce~h.)g ~f.ky:shaU bi: at least 5 MEGA
OHM or as specified in the relevant Indian Sl/indard. ·
(2) If the supplier declines to make a connection unddr the provisions of sub-
regulation (1) he shall convey to the appjic~nt,the ,r~asons .in. \l(riting for so
declining. · · , · ·
205.
34. Leakage on consumer's premises.- (1) If the Electrical Inspector or the supplier
has reasons to believe that there is leakage in the system of a consumer which is
likely to affect injuriously the use of electricity by the supplier or by other persons,
or which is likely to cause danger, he may give the consumer notice fu writing that
. he desires tq inspect !1,nd test tile consumer's installation.
' ' _- a • '_' ., • ' • ·,·, • •
·
(2) If on such ~i>ti~e being, given the CO'llswnei'does rit>t give ali reasonable
facilities for i~tion and testing of his installation, or ·When an insulation
resistance. of the e9nsum~r•s
installation is so low as
to. prevent safe use .of
electricity, the supplieqnay, apd if directed so to do by the Blectrical Inspector
. shall discontinue. ili.e supply 'ofe\ectticity to the. installatioI1 but only after giving to
the consumer forty eight 'hours hofice in writing of disconnectioh of supply and
• shall not recommence the suppiy uniil he or the Electric~! Inspector is satisfied
. that the cause of tile leakage Ila~ been j-ertioved. ·.· ·· ·
3S, Supply and use of electricity.- : (1) The el~ctricity shall n;;t"
be supplied,
transformed, converted, inverted or-used or continued to be supplied, transformed,
converted, inverted or used unless the conditions contain.ed in sub-regulations (2)
to (8) are complied with. :, · ·
(2) The following controls ofrequi~ite capacity to carry and break the current shall
· be placed as near as po~s\l?le:111'er,fue poillt of commencement of supply so as to
be readily acc.f!ssible ap,d. CQP@li,9fbeingJ1asily operated \o completely isolate the
supply to the installation,, §Uch. equipment being in addition to any equipment
installed for controlling-1pdivjdual, circuits or apparatus, nam,e)y:a, .
Pr<>vip~d pi;it '\yhert~ th,e pointpf commencement -of supJ:'lY and the
consumer apparatus are nciar each other; one linked switch with fuse or circuit ·
.breaker near the pointof commenCeD3entof ~upply shall be considerecl sufficient.
206 THE GAZETTE OF INDIA : EXTRAORDINARY [PART III-SEC. 4]
(i) on primary side for transfonners a linked swi.tch with fuse or. circuit
breaker of adequate capacity: , ·
(ii) in respect of all transfonners installed in or after the year 2000, on the
secondary side of all transformers a circ11it breaker of adequate rating shall
. be installed: ·
(4)Except in the case of composite control gear designed aSa unit each distinct
ci,:cuit is to be protected against excess energy by means of suitable cut-out or a
circuit breaker of adequate breaking capacity suitably, located and so constructed
as to prevent danger from overheating, arcing or scattering of hot metal when it
comes into operation and to permit for ready renewal of the fusible metal. of the
cut-out without dane:er.
(5) The supply of electricity to each motor or a group of motors or other apparatus
meant for operating one particular machine shall be controlled by a suitable linked
switch or a circuit breaker or an emergency tripping device with. manual reset of
requisite capacity placed in such a position as. to be. adjacent to ,the motor or a
groJIP of motors or other apparatus readily accessible to and easily operated by the
pef!!on inc4arge and so connected in the circuitthat j,y its .means all supply of
electricity can be cut off from the motor or group .of motors or apparatus from any
regulating switch,· resistance of other device associated· therewith.
(6} All insulating materials shall be cho.sen with special regard to the •
circumstances _of their pronosed use and their mechanical strength shall be
•
['ll'TIII-~4] '2f17
a
sufficient for t4eir purpose and so far as is practicable of such character or so
protected as to maintain adequately their insulating property under all working
conditions in respect of temperature and moisture; and •
(7) Adequate precautions shall be taken to en§ure that no;live·parts are s.o exposed
as to cause danger.
(8) Every consumer shall use all reasonable means to ensvre.. that i.vhere electricity
is supplied by a supplier no pers<;m. other than the. suppliei:. shall, interfere with
service lines and. apparatus placi-1 by the .supplieron the. premises of the
consumer.
•
36,,Provlsions for supply.and ~sec~f~iectricity in multi-storeyed building more
,,than 15 metres in heigbt~·(J).Jhe connected load !lfld voltage of suJ>ply above
,which inspection is .io,be;carrieq,oq1,by an Electrical 'Inspector for. a multi-
storeyed bulding of more ·than fifteen meters .height shall be notified by the
Appropriate Government.
(3) The supplier or owner of the installation shaU provide 'at the point of
• commencement of supply, a. suitable isolating device with cut0out or
breaker to
operate on all phases, ~xcept neutral in the 3,phase, 4-wire circuit and fixed in a
conspicuous position at riot more than L 70 metres above the grofill.d so as to
· completely isolate the supply to the buHding in case of emergency.
(4) The owner or occupier 1>fatnulti,st9reyed building shall ensure that electrical
installations and works inside the building are carried out and maintained in such a.
manner as to prevent danger due. to shock. and fire hazards, and the installation is
' ' carried out in accordanqe 'witlltpe relevant codes ()f practice.
.(5) No other service pipe~ 'and' cablessh~ll 'be Ween along the ducts provided fof
· laying power cables and all· ducts ·provided for power cables and other services
shall be provided with fire barrier at each floor crossing.
• • '! ',; ,_,·-
' (i) all conductors.other than those of overhead lines, sl)all be b<>mpletely
' enclosed in mechanically strong metal casing ormetallic covering \Vhich is
.. electrically and mechanically continuous and. adequately protected against
mechanical damage unless the said conductors are accessible only to an
designated person
. ,
or are
. :
installed
. ·;
and> protected
.-. . · ' . .
so as to prevent danger:
208 ,THE GAZETTE OF INDIA : EXTRAORDINARY (PART III-SEc. 4)
F
Provided that nonsmetallic conduits confonning to the relevant Indian
Standard Specifications may be used for ins)allations of ,voltage not exceeding
650V:.
(ii) all metal works, enclosing, su~rting· or associa~d with the installation,
· other than that designed to serve as a conductCJr shallbe connected with an
earthing system as per standards .laid down in the Indian Standards in this
, regard and the provisions ofregulation 41.
.·· . (a) a clear space of not less than one metre inwidth.shall be provided
: in front of the switchboard;
. . (v) Where an application has been made to a supplier for supply of electricity to
any installation, lie shall not commence the supply or where the supply has ·
been ·discontinued for a period of six months and above, recommence the
supply unless the consumer has complied with, in all respects the conditions of
supply set out in these regulati<>ns. ·
(vii)If at any time after conne,;,ting the supply,· the supplier is satisfied that any
provision of these regulations are not being observed he shall give notice of ihe
same in writing to the .consumer and the Electrical' Inspector, specifying how
the provisions have not been observed and to rectify such defects in a
reasonable time and if the consumer fails to rectify such detects pointed out, he
may discontinue the supply after giving the consumer a reasonable opportunity
•
['ll'T III-~ 4] 1ITffi 'q)J ~ : at'tfiEU(UI
of being heard and recording reasons in writing and the, supply shall be
discontinued only on written orders of an officer duly notified qy. the supplier
in this behalf and shall be restored with all possible speed aft,er such defects are
rectified by the consumer to the satisfaction of the supplier.
38. Appeal to Electrical Inspector in regard to defects.- (1) lf any applicant for a
• supply or a consumer is dissatisfied with the action of the supplier in declining to
commence, to continue or to recommence ·the supply of electricity to his. premises
• on .the grounds that the installation is. defective or is likely to be dangerous, he may
appeal to the Electricitl Inspector to test the installation and the supplier shall not,
if the Electrical Inspector intimates that the installation· is free froin the defect or
danger complained of, refuse supply tll the consumer on the grounds aforesaid,
and shall, within twenty four hours after the receipt of such intimation from the
Electrical Inspector, co=.ence, continue or recommence the supply of electricity.
(2) Any test for which application has been made under sub regulation (1 ), shall
be carried out within seven days after the receipt of such application.·
39. Precautions against failure of supply and notice of failures.- (1) The layout of
tile electric supply lines of the supplier for .the supply of electricity throughout' his
area of supply shall under normal working conditions be sectionalised and so
arranged, and provided with .switchgear or circuit-breakers, so located, as to
·restrict within reasonable Hmits the extent of the portion of the system affected by
any failure of supply. ·
(2) The supplier shall take all reasonable precautions to avoid any accidental
interruptions of supply, and also to avoid danger tci the public or to any-~.mployee
or designated person when engaged on any operation during and in connection
with the installation, extension, replacement, repair and maintenance of any works.
(3) The supplier shall send to the Electrical Inspector a notice of failure of supply
of such kind as the Electrical Inspector may from time to time require to be notifed
to him, and such notice shall be sent by the earliest mode. of communication after
the failure occurs or afterthe failure becomes known to the supplier and shall be in
the Form given in Schedule-VI.
(4) For the purpose of testing or for any other purpose connected with the efficient
.. working of the supplier's installations, the supply of electricity may be .
discontinued by the supplier for such period as may be necessary, subject to not
less than twenty four hours notice being given by the supplier to all consumers
likely to be affected by such di&eontinuance: /
•
Provided that nosuch notioe shall be given in cases of emergency.
3747 Gl/10-27
210 TIIE GAZETTE OF INDIA : EXTRAO~INARY [PART Jll.---.SEC, 4]
ChapterV
40. Test for resistance of Insulation.- (l) .Where any electxic s11cpplyJine. for use at
,voltages not exceeding 650 V has been disconnectefi from, a system for the "
purpose .ofaddition, alteration or repair, such electric. supplyJine. shall not be
reco11Dected_ to ,.the., system until the supplier orthe owrtet has applied the test
prescribed under regulation 33. -
(2) 'J:he. provision under sub-regulation ( !)shall not apply to overhead lines except
overhead insulated cables, unless the Electrical Inspector otherwise directs in any
particular case ..
41. Connection ~ith earth.~ The following conditions shall apply to the connection
with earth of systems at voltage normally exceeding 125 V but not exceeding 650
V, namely;-_ - · a·" •
(i) neutral conductor of a 3-phase, 4-wire· system and the middle conductor
of a 2-phase, 3-wire system shall be earthed by not less than two separate
and distinct connections with a minimum of two different earth electrodes
· or such large number as may be necessary to bring the earth resistance to a
satisfactory value both at the generating station and at the sub-station.
(iv) iri the case of a system comprising electric supply lines having
concentric cables, the external conductor·of such cables. shall be earthed by
two separate and distinct connections with earth; ·-
(v) the connection with earth may include a link by means of which the
connection may be temporarily interrupted forthe purpose of testing or for
locating a fault:_
- (vi)" in a direct current three wire system, the mid.die conductor shall be
•
earthed at the generating station only,,.at1q\,th.e,current from the middle
conguctor to earth shall be continuously recorc\eci by means of a recording
amtneter, and if at any time the current exceeds one~thousaudth part of the
maximum ~upply _current, immediate steps-,shit\1 be taken_ to improve the
insulation of the ,system, - -· ·
taken to improve the insulation of the system, and the circuit breaker shall
be reclosed as soon as possible.
(ix) in·the case of an alternating curtent system, there shall not be inserted
in the. connection with earth any impedance, other than that required solely
for the operati011;ofswitchgear or instruments, cUt-oU:t or circuit breaker,
and the result of any test made·to ascertain whether the current, if any,
passing through the connection with earth is normal,· shall be duly recorded
by the supplier, · ·· ·
(x) no person shail make connection with earth by the aid of, nor shall he
• keep it. in contact with, any water mains not belonging to him except with
the consent ofthe ownertheteof and of the Electrical Inspector.
(xii) the frame of every generator, stationary motor, portable motor, and
the metallic piirts, n6t intended as conductors, of all transformers and any
other apparatus 11sed: for regulating or controlling electricity, and all
electricity consutnirig 'apparatus, of· voltage exceeding 250 V. but not
exceeding 650 V shall'~ earthed by'the owner by. two separate and distinct
connections with earth.
.
(xiii) neutral point of every generator and transformer shall be earthed by
connecting it to the earthing system by not less than two sepeartt and
distinct connections. · ·
(xiv) all metal casing or metallic coverings containing or protecµng \ny
electric supply line cir apparatus shall be connected with earth and shall be
so joined and conn~$ed acros~ allju~qn)iox:es and other openings as to
make good mechaniClll and electrj._cal c.ciniiection throu$hout their who!~
length: .
sop.kets shall be of the three pin type, and the third pin shall be permanently
and efiiciently·earthed.
· (xvi.i) a record of every earth test made and the result thereofshall be kept
by the supplier for a period of not less than two years after the day of
testing and shall be available to the Electtical_Inspector when required.
L
['ll'l 111-= 4] ttml <j;1 <1"1'111 : ~ 213 ·
Chapter VI
Provided that the' supplier may energise the aforesaid electric supply Jines
or apparatus for the purpose of tests specified in regulation 46. ·
(3) The owner of any instal.lation of voltage exceeding '650 V shall, before making
• application to the Electrical Inspector for approval ofhis installation or additions
thereto;· test every circuit of voltage exceeding 650 V or additions theJe!o, other
than an overhead line, and satisfy himself that they withstand the applicittion of the
• testing voltage set out in sub-regulation (!) of regulation 46 and shall duly record
. the results of such tests and forward them to th.e Electrical Inspector:
Provided that anitlectrical lnspector may direct such owner to carry out
such tests as he deems neces.sary or accept the ,manufacturer's certified te~.ts in
respect of any particular apparatus in place of the tests required by this regulation
. (4) The owner of any installation of voltage exceeding 650 V who makes any
addition or alteration to his installation shall not'cortnect · to the supply liis
'apparatus or electric supply lines., comprising the said alterations or additions
unless and until such alteration or addition has been _approved in writing by the
Electrical Inspector, ·
and all operations in connection with the said conductors and apparatus are
carried out l>y a designated person; ·
(ii) ·· the consiimet has provided ~itd agrees to ll1llintaift a·sepatate building
' ♦
' 'Provided further that in the case. of,ari outdoor installation the
·consumer shall suitably segregate thlfafotesilia apparatus,belonging to the
''suj,'plierfromhis own; · · " ·
------·--
., .._.,-
['ll'IIII-~4] '11m <f;J ~ : ~ 2is
(vi) a sub-station or a switching station with apparatus having more than
2000 litres of oil shall not be located in the basement where p1oper oil
draining arrangement cannot be provided;
(vii) where a sub-station or a switching station with apparatus having
more than 2000 litres of oil is installed, whether indoor or outdoors, he
shall take the following measures, namely:-
• (a) the baffle walls .of four hours- fire rating shall be provided
betw1:en the apparatus,-.
(c) spare oil shall not be stored in the vicinity of any oil filled
• equipment in any such stib~station or switching station; .
"
(d) all the transformers and switchgears shall be maintained in
accordance with the maintenance schedules prepared in
accordance with the relevant codes of practice of Bureau of Indian
Standards;
(b) the entrances to the room shall be provided with fire resisting
doors of 2 hour fire rating and the door shall always be kept
closed and a notice of this effect shall be affixed on outer side of
the door;
(e) the cables to prynary side and secondary . side shall have
sealing at all floors and wall opening of atleast two hours rating;
(xi) he shall ensure that oil filled transformers installed indoors in other
than residential or commercial buildings are placed at the ground floor or
not below the first basement;
(xii) he shall ensure that cable , trenches inside the. sub-stations and
switching stations containing cables are filled with sand, pebbles or similar
non-inflammable materials or completely covered with non-inflammable
slabs; "
(xiii) he shall ensure that unless the conditions are such that · all ihe
conductors and apparatus may be made dead at the same time for the
purpose of cleaning or for other work, the said conductors and apparatus
shall be so arranged that these may be made dead in sections, and that work
on any such section inay be carried on by a designated person without
danger;
(3) All apparatus shall be protected against lightning and apparatus exceeding
220 kV shall also be protected against switching over voltages. ·
· (4) The equipment used for protection and switching shall be adequately co-
ordinated with the protected apparatus to ensure safe' operation and to maintain the
stabilitfof the iriter-cotinected units of the power ~ystem. ·· ·
•
.... (~). 'Ibei;~ $hiill ll,Qtlle \appi]lg 9fa1J,Ot,h!}r,n:~ll,slajssicmJi1J,e,[i:9m.the ll,laill,lill,efor
66 kY'md above class of lines. . . . .
; ;, ,.=-: -,,-.-t ", -,-•:_; (>··_-,._;; __ ;·: ._, ;__;:; ;__; ''J rii}J·, ~ ,:, ;_;(, ·.;;·,_-·,:: r1,·; -
(i) isolators and the ·controlling circuit breakers sha!Fbe inter,locked so
. . that tltts isCll~tClrs.p~IIIIQt,l>e 9perated µn\~ss theCQIT!}spo,!1.4jng'11r,eakeris in .
• ;' PJ''IBR0Si~pn; ,,J . . . ... •. ... . . . .... ; .,; k) ' • C . •
.......... .(i) •.. ov;er ,curren,t ,prgtecti9n, to disc9nnectcthe supply automatically dUhe
· ratc:;d cµrr~t.qf the eqµipmell,t, cab!e,Qr supply, line• ii.,exceededcfor::a,,time
,w.hich.,thee)lµiPllleµt, cab.le Qr.supply,liµeis;not,'designed·to withstand;··
3747 Gl/10-,.28
218 THE GAZETTE OF INDIA : EXTRAORDINARY [PART III-SEC, 4]
(v) all generators with-rating of 100 KVA and above shall be protected
against earth fault or leakage; ·
(vii) high speed bus bar differential protection along with local breaker
back up protection shall be commissioned and shall always be available at
all 132 kY and above voltage sub-stations and switching stations and
· g~rierating stations connected with the grid:
(viii) every generating station and sub-station connected to the grid at 220
kV and above shall be provided with disturbance recording and event
logging facilities and all such equipment shall be provided with time
·synchrortization facility for global common time reference but wherever
numerical relays·. wiih provision of recording fault data are installed,
disturbance recorder and event logger may not be installed;
46. Testing, Operation and Maintenance.- (1) Before approval is accorded by the
Electrical Inspector under regulation 43 the manufacturer's test certificates shall, if
required, be produced for all the routine tests as required under the relevant Indian
Standards.
(2) No new apparatus, cable or supply line of voltage exceeding 650 Volts shall
be commissioned unless such apparatus, cable or supply line are subjected to site
tests as per relevant code of practice of the Bureau of Indian Standards.
(3) No apparatus, cable or supply line of voltage exceeding 650 V which has been
, •kept disconnected, for a period of six months or more, from the system for
-, alterations or-repair, shall be connected to the system until such apparatus, cable or
supply line are subjected to the relevant tests as per code of practice of Bureau of
Indian Standards .
(5) All apparatus, cables and supply lines shall be maintained in healthy
conditions and tests shall be carried out periodically as per the relevant code of
practice of the Bureau oflndian Standards.
(6) Records of all tests, trippings, maintenance works and repairs of all
equipments cables and supply lines shall be duly kept in such a way thatthese
records can be compared with earlier ones .
• (7) It shall be the responsibility 9f the owner of !II\ installations of voltage
exceeding 650 V to maintain and operate the installations.in a cqnc\itionfree from
danger and as recommended by the manufacturer or by the relevant codes of
practice of the Bureau oflndian Standards.
• 47: Precautions to· be taken against excess leakage in case of metal sheathed
electric supply lines.- The following precauti9ns shall be tal\:en in c,a,se of electric
supply lines other t)lan overhead Jines, for use at voltage exceeding 650 V;.
namely:- ·
(i) the c9nductors of the cable except the cable witb t)l~9119plastic
insulation without any metallic screen or ~rtnour shall be enclos~d in metal
sheathing which shall be electrically continuous and connected with earth, and
the conductivity of the metal sheatbing shall be maintained and reasonable
precauti9ns taken where necessary to avoid corrosion of tbe sheathing; ·
(ii) tbe resistance of the earth connection with metallic sheath shal\ be kept
low enough to permit the controlling circuit breaker or cut-out to· 9p\'lrate in
the event of any failure of insulation between the metallic sheafu' and the
conductor.
(ii) in the case of thermoplastic insulated and ~heathed cable_s with metaHic
• armour the metallic wire or tape arm9ur, shall be considered as metal
sheathing.
• (b) where an electric- supply line as aforesaid has concentric cables and the
external conductor is insulated from an outer metal sheathing and connected
with earth, the external conductor may be regarded as the metal sheathing for
the purposes of this regulation provided that the foregoing provisions as to
conductivity are complied with.
48. Connection with eartl\ for apparatus exceeding 650V.- (I) A.II11on-current
carrying metal parts associated with an installation of voltage exceeding 650 V'
shall be effectively earthed to a grounding system or mat which shall,- .
'i(ii}';" ' llmiHhe ~lllld"potential rise to tolerable values,so·as .•to prevent danger ··.
'i\llil,,to1ti:ansfe1fofYpoterttiaHhtough'gr<1und, earth wires,. cabla sheath, fences,·•
, pipe:lines, etc.;.
"(iiiY,' maintam,tJieJ resistance· of, the earth;connection,to, such a .value ,as to•.
mii!ce:,opi,ration'Of,tne'protective··devioe'effective; •·,
~'; . ,, hJ. - c,,/,, S.
·
to1,191l,
·, n
p.o¥lnt)ll,I
-
ti, ex,ceed
,._, - .- ·, __ ··
its pemntssible
__ ._l -·-• .,..
Values.
,,\,>_> ·, · ---~- ·
·
·----
' ---- ,
' . '·
· ··
·•-
' ·' · •
cs{;1~'t1tJ J;~~ or'~ 'sy~te111 Cmn~risiiig electric 'siipi,ly litieii having ¢dncentric •
cablei.tlie extemiit'conductor
i;L ·· .... :.;;;_-
sllairlle connected
,.,f : . . ,_, ;,;'.
i,·c, .,;- .
witli earth. .-· ·· · "· ·. · . ··
..(6i. Wh~e 'a sl\ppli~t pt6p<ises;to• i:oniii:6f \vith ~tfi:xisting system for use at i:artli.
voltage exceeding 650 V which has not hitherto been s6 connected with· earth; he
·smiR!l,i,re. ~Qt;less ·than f~ep «4Ys notice in ting together with particulars of 'Nii
. th;p~PJ?.S~~llll~ti()!l:wifl.l eart!\',ti>.-jli~tefdgrap!i~autltorifyestablishedtirider'the
.
1nc1iaii,Te'tegra~lf----· .i\ct.J!!~s11,3oft8J!'sr
'' ''" .. .-,.. : ,, .--
- ':.. ·:'' ,, '
_· , '_-_ .. '' '
·
, (7) Where the earthing,l¢ad:.~.~,conn,ectio11 are µsc,:d,oµly iI\ connection with
earthing guards erected under overhead lines of voitag,e. exceeding •650 V •where
they cross a. telecommunication line or a railway line, and where such lines are
equipped:. with earthdeakage, the earth resistance slia11 not excead twenty five
ts>' :E~ery 'eattiiing system befongiitg to either the SUppHeror tli~ consurtier shall
.be tested for its resistance to earth on a dry day during dry season' not· less than
,.o,nc~ .a yelll" 1111d records of suchtests: shall be. maintained and produced, if so
~li~d;
,,'.-'" -.·
i>efore'the Electiical
-,·;_, -._____ ---_-,_,
__ :- _·, ::
Inspe~tor:
_, --'"
·, "_,
··
49." Geiietal' condltlcjnS. as to transformation' and· control of •electricity,;; ··(J) Where
. electricity of voltage ·exceeding' 650 V is ~nsformed,' converted, regulated or
otherwise controlled in sub~stations or switching stations includin,g outdoor sub-
. stations' and outdoor switching stations to lie transfornied'of in street boxes
··constructed underground, the'foilowing provisions shall· be'observed, riatriely:-
(ii) outdoor sub-stations except pole type stib•sfuticms and outdoor switching
stations shall, unless the apparatus is completely enclosed in ~. metal covering
. . ' •. i::orinei:ted wlth earth; the said. apparatus' also oeing connected with the system
by armoured cables, be efficiently' protected b)' fencing not less than 1.8
metres in height or other means so. as to prevent access to the electric supply
Hnes arid apparatus therein by an tindesignated person and the fencing of such
. ' area shall be earthed efficiently; . . .. . ·
... •. ' ' (iii)underground 'street ooxes, other 'than Sl\b'stations, which contain
trarisforrriei:s shall not coittain switchesor·other apparatus, . and switches, cut'
outs or other apparatus required 'for 'coriirollirig of otherplirposes shall be
fixed
.- •
in '."-cseparate
, '
receptacle •above. ' ground wherever
:,-;•; ;: . •.
practicable .
50. Pole type sul:1-stations.- Where platform type construction is used fot a pole type
sub-station.and.sufficient space, for a person to stand on thepl~tform is provided, a
slibsfa'ntiiif!hartd rail'shall be bililt'atiiurid the said pfatform and if the hand rail is
of metal, it shalr be connected with faith:
Provi_ded that in the case of pole type sub:station on wooden supports and
.Wobdefi platform the niefa'lharidirail sha1! nofoe coimect~d whh e~rth, .
52. Supply to luminous tube sign installations of voltage exceeding 650 Volts but
not exceeding 33 kV,- (1) Any person who proposes to use or who is using
electricity for the purpose of operating a luminous tube sign installation, or who
proposes to transform or is transforming electricity to a voltage exceeding 650 V
but not exceeding 33 kV for any such purpose shall comply with the following
conditions, namely:-.
(i) all live parts of the installation, including all apparatus and live
· conductors in the secondary circuit, but excluding the tubes except in the
neighbourhood of their terminals, shall be inaccessible to undesignated
persons and such parts shall be effectively screened;
(v) where the conductors of the primary circuit are not in metallic
connection with tile supply conductors, one phase of such primary circuit
shall be permanently earthed at the motor generator or convertor, or at the
transformer and an earth leakage circuit breaker of sufficient rating shall be
provided on the side of voltage not exceeding 250 V to detect the leakage
in such luminous tube sign installations; .
(xi) where static 9ondensers are used, they shall be installed on the load
side of the fuses and the primary side of the transformers where the voltage
does not exceed 250 V; ·
(xii) where• static condensers are used on primary side, provision shall be
made for automatic or manual discharging of the condensers when the
supply is cut off; ·
(xiii) before using the static condensers or any interrupting device. on the
voltage exceeding 650 V, the executing agencies shall test and ensure that
automatic discharging device is functional thereon.
(2) The owner or user of any luminous tube sign or sh;nilar installation of
voltage exceeding 650 V but not exceeding 33 kV shall not bring the same into
use without giving to the Electrical Inspector not less than fourteen days notice
in writing of his intention so to do.
53. Supply to electrode boilers of voltage exceeding 650 Volt but not exceeding
33 kV.- (1) Where a system having a point connected with earth is used for
supply of electricity to an electrode boiler of voltage exceeding 650 V which is
also connected with earth, the owner or user of electrode boiler shall comply
with the following conditions, namely:-
(i) the metal work of the electrode boiler shall be efficiently connected
to the metal sheathing and metallic armouring, if any, of the electric supply
line of voltage exceeding 650 V but not exceeding 33 kV whereby
electricity is suppied to the electrode boiler;
(iii) an inverse time element device may be used in conjuction with the
aforesaid circuit breaker to prevent the operation thereof unnecessarily on
the occurrence of unbalanced phase currents of momentary or short
duration;
(iv) the supplier ot owner shall serve a )lotice in writing on the telegraph-
authority at least seven days prior to the date on which such supply of
) electricity is to be afforded specifying the location of every point, including
\
I,
TIIB GAZETIE•OF INDIA: EXTRAORDINARY
(2) The o~er or u~er ~f ~y electrode bgiler '~f voltage eice6ding 650 V shall
not bring the same into use without ,giving the Electrical Inspector ricitless thari
fourteen days notice in writing ofhisi;nti:;ntion soto .do. ,
- .. '" .• ... ,-_,, •,- '. . -_,,_,--- _.;' -\;,· ,,-- _,._ ., ... -, -._-- .;-
54. Supply to X-ray and high frequency installations ..- {I) Ally person, who
proposes to use or who is using electricity for the purpose of operating'an X-ray
· or simila,r high,frequency i,nstailation, other .than. portab\e units or shock-proof
. self ,contained, and stationary,
- ....ut1its
. '.
.
shin·
.. " -
.
comply·
- '.
thi.
- .'·
fol10Wi1lg
.. ' {
conditions,
. '' "' ,. ' ' ,. '
· namely:-
(iv) X-rny tubes used in therapy shall be mount~cl fo. ~11earthed metal
.- enclosure;.. . - , ", - . . . '
(ii) the circuit of voltage not exceeding 250 V of the step up transformer
shall contain a manually ·operated control device having overload
protection, in addition to the over current device for circuit protection, and
these devices shall have no exposed live parts and for diagnostic work
there shall be an additional switch in the said circuit, which shall be of one
of the following types:-
(iii) if more than one piece of apparatus be operated from the same
source of voltage exceeding 650 V, each shall be provided with a
switch of voltage exceeding 650 V to give independent control; ·
•
(iv) low frequency current-canyihg parts of a machine of the quenched-
gap or open gap type shall be so insuliited or guarded that they cannot be
touched during operation but the high frequency circuit-proper which
delivers high-frequency current normally for the therapeutic purposes shall
be exempt·from such insulation;
(v) all X-ray generators having capacitors shall have suitable means for
discharging the ca~acitoni manually;
(vi) except in the case of self-contained units, all 200 kV peak or higher
X-ray generators shall have a sphere gap installed in the system of voltage
exceeding 650 V but not exceeding 33 kV adjusted. so that it will break
down on over voltage surges.
(3) (i) all non-current carrying metal parts of tube stands, fluroscopes and
· other apparatus shall be properly earthed and insulating floors, mats or
platforms shall be provided for operators in proximity to parts of voltage
exceedi11g 650V unless such parts have been rendered shock proof;
(ii) where short wave therapy machines are used, the treatment tables and
examining chairs shall be wholly non-metallic.
(4) The owner of any X-ray installation or similar high frequency apparatus
shall not bring the same into use without giving to the Electrical Inspector not
less than fourteen days notice in ,vriting of his intention to do so:
Provided that the aforesaid notice shall not be necessary in the case of
shock-proof portable. X-ray and high-frequency equipment w½tic_!i have been
inspected bdore the commencement of their use and periodically thereafter.
3747 Gl/10-29
226 TIIE GAZETTE OF INDIA: EXTRAORDINARY [PART III-SEC. 4]
Chapter VII
55. Material and strength.- (1) All conductors of overhead lines other than those
specified in regulation 68 shall have a breaking strength ofnotless than 35Q kg.
(2) Where the voltage_ does not exceed 250 V and the span is of less than fifteen
metre~ and is drawn through the owner's or consumer's premises, a conductor
having an actual breaking strength of not less than 15.0 kg may be used.
56. Joints.- (I) No conductor of an overhead line shall have more than one joint in a
span and joints between conductors of ovemead lines shall be mechanically and
electrically secure under the conditions of operation.
(2) The ultimate strength and the electrical conductivity of the joint shall be as per
relevant Indian Standards.
57, Maximum stresses and factors of safety.- (I) The load and permissible stresses
on the structural members, cohductors and ground wire of self supporting steel
lattice towers for overhead transmission lines shall be in accordance. with the
specifications laid down, from time to time, by the Bureau oflndian Standards.
(2) Overhead lines not covered in sub-regulation (I) shall have the following
mbimum factors of safety, namely:-
(i) for metal supports 1.5
(ii) for mecha11ically processed concrete supports 2.0
(iii) for hand-moulded concrete supports 2.5
(iv) for wood supports 3.0
(3) The minimum factors of safety shall be based on such load as may cause
failure of the. support to perform its function, assuming thatthe foundation' and
other components of the structure are intact.
(4) The load shall be equivalent to the yield point stress or the modulus of
rupture, as the case may be, for supports subject to bending and vertical loads and
the crippling load for supports used as strut.
(5) The strength of the supports of the overhead lines in the direction of the line
shall not be less than one-fourth of the strength required in the direction transverse
to the line.
(7) The minimum factor of safety for cnndvctors shall be two, based on their
ultimate tensile strength, in addition, the conductor's tension at 32° C, without
external load, shall not exceed the following percentages of the ultimate tensile
strength of the conductor:-
[ 'll'T I I I - - 4l 'J27
(8) For the purpose of calci,lating the factors of safety in sub-regulation (2), the
following conditions shall be observed, namely:-
(i) the maximum wind pressure shall be as specified in the relevant Indian
Standards;
• (ii) for cylindrical .1, die, the effective area shall be taken as full projected .
area exposed to wind pressure; and
58. Clearance above ground of the lowest conductor of overhead lines.- (1) No
conductor of an overhead line, including service lines, erected across a street shall
at any part thereof be at a height of less than-
(i) ' for lines of voltage not exceeding 650 Volts - 5.8 metres
(ii) for lines of voltage exceeding 650 Volts but
not ex~eeding 33 kV· · 6.1 metres
(2) NQ conductor of an overhead line, including service lines, erected along any
street shall at any part thereof be at a height less than-
(i) for lines of voltage not exceeding 650 Volts - 5.5 metres
• (ii) forlines of voltage exceeding 650 Volts but
not exceeding 3 3 kV 5. 8 metres
(4) For lines of voltage exceeding 33 kV the clearance above ground shall not be
less than 5.2 metres plus 0.3 metre for every 33,000 Volts or part thereof by which
the voltage ofL'l.e line exceeds 33,000 Volts;
Provided that the minimum clearance along or across any street shall not
be less than 6.1 metres.
(5) For High Voltage Direct Current (HVDC) lines, the clearance ab9ve ground
shall not be less than:-
(2) In any case of a crossing specified in ~ub-regulation (1), whoever lays his line
later in time, shall provide the clearance between his own line and the line wbich
will be crossed in accordance with the provisions of the said sub-regulation:
Provided that if the later entrant is the owner of the lower line and is not
able to provide adequate clearance, he shall bear the cost for modification of the
upper line so as to comply with this sub-regulation .
.L,_ --
['11'1-III-~ 4] 229
60. Clearance from buildings of lines of voltage and service lines not exceeding
650 Volts.- (1) An overhead line shall not cross over an existing building as far as
possible and no building shall be constructed under an existing overhead line.
(2) Where an overhead line of voltage not exceeding 650 V passes above or
adjacent to or terminates on any building, the following minimum clearances
from any accessible point, on the basis of maximum sag, shall be observed,
namely:-
(i) for any flat roof, open balcony, varandah roof and lean-to-roof-
(a) when the line passes above the building a vertical clearance of 2.5
metres from the highest point, and
(b) when the line passes adjacent to the building a horizontal clearance
of 1.2 metres from the nearest point, and ·
(a) when the line passes above the .building a vertical clearance of 2.5
metres immediately under the line, and
(b) when the line passes adjacent to the building a horizontal clearance
of 1.2 metres.
(3) Any conductor so situated as to have a clearance less than that specified above
shall be adequately insulated and shall be attached at suitable intervals to a bare
earthed bearer wire having a breaking strength of not less than 3 50 kg.
(4) The horizontal clearance shall be measured ·when the line is at a maximum
deflection from the vertical due to wind pressure.
Explanation:- For the purpose ofthis regulation, the expression "building" shall be
deemed to include any structure, whether permanent or temporary.
61. Clearances from buildings of lines of .voltage exceeding 650 V.- (1) An
overhead line shall not cross over an existing building as far as possible and no
building shall be constructed under an existing overhead line.
(2) Where an ove_rhead line of voltage_ exceeding 650 V passes above or adjacent
.
to any building or part of a building
. . it shall have on the basis of maximum sag a
~
vertical clearance above the highest part of the building immediately under such
line; of not less than-
(3) The horizontal clearance between the nearest conductor and any part of such
building shall, on the basis of maximum deflection due to wind pressure, be not
less than-
(4) For High Voltage Direct Current (HVDC) systems, vertical clearance and ·
horizontal clearance, on the basis of maximum deflection due to wind pressure, ·
from buildings shall be maintained as below:
Explanation:- For the purpose of this regulation the expresssion "building" shall
be deemed to include any structure, whether permanent or temporary.
(i) whether the line under reference was laid in acordance 'with the
provisions of these regulations and any other Jaw;
(iv) whether such person was liable to pay the cost of alteration of the
overhead line and if so, send a notice without undue delay, to such person
together with an estimate of the cost of the expenditure likely to be
incUITed to so alter the overhead line and require him to deposit, within
thirty days cf the receipt of the notice, with the supplier or owner, the
amount of tlw estimated cost.
(3) If such person di,;putes the cost of alteration of the overhead line estimated by
the supplier or owner or even the responsibility to pay such cost, the dispute may
be referred to the Electrical Inspector whose decision thereof sh!!ll be final,
(4) The Electrical Inspector shall estimate the cost of alteration of overhead line
on the f9ilowing basis, namely:•
• (i) the CQSt of material used OH the alteration after crediting the
depreciated· cost of the material which shall be available from the existing ,
line; _,
(iii) supervision charges to the extent of fifteen per cent of the wages
mentioned in sub clause (ii); and charges incurred by the supplier or
owner in complying with the provisions of section 67 of the Act, in respect
"9f such alterations, -
(5) Any addition or alteration to the building or structure shall be allowed only
after the deposite of such estimated cost to the supplier or owner,
(6). No work upon such .building, structure, flood bank, road and addition or
alteration thereto shall be commenced or continued until the Electrical Inspector
232 THE GAZETTE OF INDIA : EXTRAORDINARY [PART III-SEC. 4]
has certified that the provisions of regulation 58, 60 and 61 should not be
contravened either during or after the aforesaid construction:
(7) The supplier or owner shall, oh receipt of such deposit, alter the overhead line
in such a way that it does not contravene the provisions regulation 58, 60 and 61
either during or after such construction within two months from the date of such
deposit or within such longer period as the Electrical Inspector may allow.
64. Transporting and storing of material near overhead lines.- (1) No rods, pipes
or similar materials shall be taken beiow, or in the vicinity of, any bare overhead
cop.ductors or lines if these contravene the provisions of regulations 60 and 61
unless such materials·· are transported under the direct supervision of a person
· designateci in this behalf by the owner of such overhead conductors or lines.
(2) No rods, pipes or other similar materials shall be brought withln the flash over
distance of bare live conductors or lines. ·
(4) No flammable material shall be stored under the electric supply line.
65. General clearances.- (I) For the purpose of. computing the vertical clearance of
an overhead line,. the maximum sag of any conductor shall be calculated on the
basis of the maximum sag in still air and the maximum· temperature as specified
under regulations· 57 and computing any horizontal clearance of an overhead line
the maximum deflection of any conductor shall be calculated on the basis of the
wind pressure specified under regulations 57.
(2) No blasting for any purpose shall be done within 300 metres from the
boundary of a sub-station or .from the electric supply lines of voltage exceeding
650 V or tower structure thereof without the written permission of the owner of
such sub-station or electric supply lines or tower structures and in case of mining
lease hold area, without the written permission of the tnspector of Mines.
(3) No cutting of soil within ten meters _from the tower structure of 132 kV and
above voltage lev~shall be permitted without the written permission of the owner
of tower structure.
["ll'IIIl-~4] 'llUI <lil ,:r,srtr,I : .amT'lRUT 233
(4) No person shall construct brick kiln or other polluting units near the
installations or transmission lines of 220 kV and above within a distance of 500
metres .
.6.6, Routes proximity to aerodromes.- Overhead lines shall not be erected in the
vicinity of aerodromes unless the Airport Authorities have approved in vniting the .-
route of the proposed lines as-per relevant Indian Standards. ·
67. Maximum interval between supports.- All conductors shall be .attached to.
supports at intervals not exceeding the safe limits based on the ultimate. tensile ·
strength of the conductor and the factor of safety specified under regulations 57. =
' --- ---68; Conditions to apply· where te_!ecommunication lines and power lines are.
carried on same supports.- (1) Every overhead telecommunication line erected
• on supports carrying a power line shall consist of conductors each having a
b1caking strength of not less than 270 kg. ·
69. Lines crossing or approaching each other and lines crossing. street and ·road.-
Where an overhead line crosses or is in proximity to any telecommunication line,
the owner of either the overhead lirie or the telecommunication line, whoever. lays
his line later, shall arrange to provide for protective devices or _guarding .·
. arrangement and shall observe the following provisions, ·namely:-
•
(i) when it is intended to erect a telecommunication line or an overhead
line which will cross· or be in proximity to an overhead line or a·
• telecommunication line, as the case may be, the person proposing to erect
such line shall give one month's notice ofhis· int<:ntion so to do alorig with
· the relevant details of protection and drawings to the owner of the existing
iine;
3747 Gl/10-30
234 THE GAZETTE OF INDIA : EXTRAORDINARY [PART IIl~SEC. 4]
(v) where an overhead .direct current (DC) line crosses another overhead
line, clearances shall be as under:-
..
•
11. 800kVDC 7.94 T 7.94 7.94 7.94 7.94 7.94
(vii) in all cases referred to in this regulation the expenses of providing the
guarding arrangements or protective devices shall b~ borne by the person
whose line was last erected;
(viii) where two lines cross, the crossing shall be made as nearly .at right
angles as the nature of the· case admits and as near the support of the line as
practicable, and the support of the lower line shall not be erected .below the
upper line;
(ix) the guarding arrangements· shall ordinarily be carried .out by the owner
of the supports on which it is made and he shall be responsible for its
efficient maintenace.
70. Guarding.- ( 1) Where guarding is required under these regulations the following
shall be observed , namely: 0 •
(ii) ·every guard-wire shall have an actual breaking strength of not less ·
than 635 kg and if made of iron or steel, shall be galvanised;
(2) In the case of a line crossing over a trol~ire the guarding shall be
.. subjected to the following conditions, namely:-.
(i) where there is only one trolley-wire, two guard~ires shall be erected
as in DJAGRAM-A; . .
(ii) where there are two trolley ~wires and the distance between them
does not exceed 40 ems, two guard-wires shall be erected as in
. DIAGRAM-B;
(iii) where there are two .trolley wires and the distance between them
exceeds 40 ems but does not exceed 1.2 metres, three guard-wires shall be
erected as in DJAGRAM-C;
(iv) where there are two trolley-wires and the distance between them
exceeds 1.2 metres, e.ich trolley-wire shall be separately guarded as in
DIAGRAM-D;
(v) the rise of trolley boom shall be. so limited that when the trolley
leaves the trolley-wire, it shall not foul the guard-wires; and
DIAGRAM-A
20Cms 20Cms
MIN 60Cms
I
0
['WT m-= 4J 237
DIAGRAM-B DIAGRAM-C
0 t t 0 0 t 0 t 0
MIN MIN MIN MIN
60Cms 60Cms 60Cms 60Cms
DIAGJ.µM-D
i
20Cms 20 Cms 20Cms 20Cms
04 •O 0111 •O
60Is 60Is
0 0
OVER 120cms.
71. Service lines from overhead lines.- No service-line of tapping shall be taken off
anoverhead line except at a point of support:
Provided that the number oftappings per conductor shall not be more than
four in case of connections at voltage not exceeding 650 V.
72. Earthing.- (I) All m!ltal supports and all reinforced and prestressed cement
concrete supports of o~erhead lines and metallic fittings attached thereto, shall be
either. permanently and efficiently. earthed by providing a continuous earth wire
and securely fastening to each pole and connecting with earth ordinarily at three
points in every km. with the spacing between the points being as neatly equidistant
as possible or each support and the metallic fitting attached thereto shall be
efficiently earthed.
(2) Metallic. bearer wire used for supporting •insulated wire of overhead service
lines of voltage notexceeding 650 V shall be efficiently earthed or insulated.
(3) Each stay-wire shall be similarly earthed unless insulator has been placed· in it
at a height not less than 3.0 metres from the grourid.
73. Safety and protective devices.- (I) Every overhead line which is not being
suspended from a dead bearer wire, not being covered with insulating material and
not being a trolley-wire, · is erected over any part of a street or other public place
238 · THE GAZETTE OF INDIA : EXTRAORDINARY [PART Ill-SEC. 4]
(2) An Electrical Inspector ma'y, by notice in writing, require the owner of any
such overhead· line, wherever it may be erected, to protect it in the manner
specified in sub-regulation(]).
(3) The owner of every overhead line of voltage exceeding 650 V shall make
adequate arrangements as per relevant Indian Standards to prevent undesignated
persons from ascending any of the supports of such overhead lines which can be
easily climbed upon without the help of a ladder or special appliances:
Explanation.- For the purpose of this relgulation, rails, reinforced cement concrete
poles and pre-stressed cement concrete poles without steps, tubular poles, wooden
supports without steps, I-sections and channels' shall be deemed as supports which
cannot be easily climbed upon.
74. Protection against lightning.- ( 1) The owner of every overhead line, sub-station
or generating station which is exposed to lightning shall adopt efficient means for
diverting to earth any electrical surges due to lightning y.,hich may result into
mJunes.
(2) The earthing lead for any lightning arrestor shall not pass through any iron or
steel pipe, but shall be taken as directly as possible from the lightning arrestor
·without touching any metal part to a separate-vertical ground electrode or junction
of the earth mat already provided for the sub-station of voltage exceeding 650 V
subject to the avoidance of bends wherever practicable. · ·
75. Unused overhead lines.- Where an overhead line ceases to be used as an electric
supply line:
Chapter VIII
78. Application of chapter.- (1) The regulations in this chapter shall apply only
where electricity is used for the purposes of traction:
• )'rovided that nothing in this chapter shall apply to electricity used for
the public carriage of passe_ngers, animals or goods on, or for- the lighting or
ventilation of the rolling stock of any railway or tramway subject to the provisions
of the Railways Act, 1989 (24 of 1989). · ·
(2) In this chapter the conductor used for transmitting electricity to a vehicle is
referred to as the "line" and the other conductor as the "retuf[l".
(3) The owner of the line, return, rails or trolley wire, as the case may be, shall be
responsible for the observance ofregulations 79 to 92.
(5) The supply of electricity shall not be Dommenced by the supplier unless and
until the Electrical Inspector is satisfied that the provisions of regulations 44 to 50
and regulation 79 to 92 havl been cotnpli1'd with and the approval in writing of
the Electrical Inspector has been obtained by him.
81. Insulation of returns.- (I) Where any rails on which cars run, or any conductors
laid between or within 0.9 metre of such rails, form any part of a return, such part
may be un-insulateu and all other returns or parts of a return, shall be
insulated, unless they are of such conductivity as to secure the conditions required
b)' sub-regulations (2) and (3 ) ofregulation 82.
(2) Where any part of a return is un-insulated, it shall be connected with the
negative or neutral of the system.
the owner of un-insulated return· shall, if so required by the owner of sucH pipe,
structure or substance, connect his return therewith at his own exJl!'ll§_e,
(2) _Where the return is partly or entirely un-insulated, the owner shall, in the
construction and maintenance of his system, adopt ,such means for reducing the .
difference produced by the current between the potential of the un-insulated. return
at any one point and the potential of the un-insulated return at any other point as to
ensure that the difference of potential between the un-insulated return and any
metallic pipe, structure or substance in the vicinity shall ndt exceed four volts
where the return is relatively positive, or one and one-third volts where the return
is relatively negative.
(3) The owner of any such pipe, structure- or substance in respect of it require the
owner of the un-insulated return at reasonable times and interyals to ascertain by
test in his presence or in the presence of his representative, whether the condition
specified in sub-regulation (2) is fulfilled, and, if such condition is. found to be
fulfilled, all reasonable expenses of, and incidental to, carrying out of the test shaB
be borne by the owner of the pipe, structure or substance.
(4) The potential ofun-insulated return w1threspect to earth at any point shall not
exceed fifty volt under normal conditions.
(5) The petroleum sidings installation earth shall be. connected to the uncinsulated
return to make· it equi-potential and pipelines in the vicinity of the track should be
properly earthed. ·
83. Difference of potential on return.- Where the return is partly or entirely un-
insulated, the owner shall keep a continuous record of the difference of potential,
during the w()rking of his sy~tem, between every junction of an insulated return
with an mi-insulated
att ;- . . return and. the point
. on the. route most distant
•- from
' - that
junction, and the difference.. ,oC potential shall not, under normal runnihg
conditions; exceed a mean value of seven vo~ts between the highest momentary
peak and the average for the ho11r of ma){imum load. -
84. Leakage on conduit system.- Where· both the line and the return are placed
within a conduit, the following conditions shall be fulfilled in the construction and
maintenance of the system, namely:-
(i) where the rails are used to form any part of the return, they shall be
electrically connected at distances not exceeding 30 me~s apart;-wit!l the
conduit by means. of copper, strips having a ci:ol!s-sectional area of atleast
0.40 sq. cm. or by other means of equal,conductivity and. where the return·
is wholly insulated and contained· within the conduit, the latter shall be
connected with darth at the gdner~ting station or ~lib-station through an
. instrument suitable for the indication of.any contact.oqiartiaLcontact of
either the iine or the return with .the conduit; and ·
(ii) the leakag~-c~rrent sliaill ,be as~ertained daily, before or after the
hours. of running, when· the line is fully charged and if at any time it is
founq to. exceed 0,6-;:4Jllp~c,l,per, lqn,;;iif,,1ingle,- tramw.ay.!ltrack-j the
. .
'.·\f-'--~:·x{ .t:.f: ·,Jr,r·': 1{;p ,r- '_i-y1-~·nrr_j_.; .,- -- ,,;\., (fiD
['IT'T I I I - ~ 4] 241
J
85. Leakage on system other than conduit system.- Where both the line and the
return are not placed within a conduit, the leakage current shall be ascertained
daily before or after the hours of running, when the line is fully charged and if at
_any time it is found to· exceed 0.3 ampere per km. of single tramway track, the
• transmission and use of electricity shall be suspended unless the leakage is stopped
within twenty four hours.
86. Pas~engers not to have access to electric circuit.- Precautions to-the satisfaction
of an Electrical Inspector shall be taken by the owner of every vehicle to prevent,- -
• (i) the access of passengers to any portion of the electric circuit where
there is danger from elec_tric shock;
87. Isolation of sections.- Every trolley wire shall be constructed in sections not
-exceeding l.6 km. in length, and means shall be provided for isolating each
section. -
88. Minimum size and strength of trolley wire.- No trolley-wire shall be of less
cross-sectional area than 0.5 sq. cm. of shall have an actual breaking load of less·
than 2000 kg. · ·
89. Height of trolley wire and length of span.- A trolley wire or a traction feeder on
the same supports as a trolley wire shall, at no place be, at a height from the
surface of the street of less than 5.2 metres except, where it passes under a bridge
or other fixed structure, or through or along a tunnel or mineshaft or the like in
which case it shall be suspended to the satisfaction of an Electrical Inspector.
90. Earthing of guard wires.- Every guard wire shall be connected with earth at
each point at which its electrical continuity is broken and _shall also be connected
with the rails at intervals of not more than five spans.
3747 Gl/10-31
242 THE GAZETTE OF INDIA : EXTRAORDINARY
(a) every test made under sub-regulation (2) and (3) ofregulation 82
(b) every stoppage of leakage, together with the time occupied; and
..
(c) particulars of any abnormal occurre11ce affecting the electrical
working of the system.
(2) The records so kept under sub-regulation (I) shall be open to examination by
Electrical Inspector.
Chapter IX
93. Application of chapter. The regulation in this chapter shall- apply only where
0
•
electricity is used.in mines as defined in the Mines Act, 1952 (35 of 1952) andoil
0
fields.
94. P.esponsibility for observance.- (I) It shall be the duty of every person in charge
of and responsible to the mine including the owner, agent, manager and Engineer
of mine and oil field to comply with and enforce the regulations in this chapter
and it shall be the duty of all persoiiS employed to conduct their work in
accordance with these regulations.
(2) _In every mine. or oil-field while_ ~lectricity _is being us_ed such number of
designated supervisors and electnc1~ns shall be on .duty as the owner may
decide. ·
Explanation -For the purposes of this regulation, the word "Engineer" shall
(i) in the case of a coal mine, have the same meaning as assigned to it
in the Coal Mines Regulations, 1957;
(ii) in the case .of a metalliferous mine, have the same meaning as
assigned to it in the Metalliferous Mines Regulations,_1961; and
(iii) in the case of an oil mine, rnean the 'Installation Manager' under
the Oil Mines Regulations, 1984.
95. Notices.- (1) On or before the first day of February in every year, in respect of
every mine or oil-field, returns giving the size and type of apparatus, together with
such particulars in regard to circumstances of its use which may be required by the
Inspector, shall be sent to the inspector of mines by the persons specified in
243
(2) The persons specified in regulation 94, shall also give to the inspector of
mines not less than seven days notice iti writing of the intention to bring into use ·
any new installation in a mine or oil-field"'giving details of apparatus installed and
its location: ·
• Provided further that this regulation shall not apply to telecom1)1unication or·
signaling apparatus.
96. Plans.- (I) A correct. plan, on the same scale as the plan kept at the mine in
fulfillment of the requirements of the Mines Act, 1952 (35 of 1952), shall be
available in the office at the. mine showing the position of all fixed apparatus and
conductors therein, other than lights, telecommunication or signaling apparatus, or
' cables for the same.
(2) A sim_ilar plan on the scale not less than 25 cm. to a km. (1 :4000) sha]I be kept
by the manager or owner of one or more wells in any oil-field.
(3) A similar plan on such scale as the Central Government may direct, showing
the position of all electric supply lines, shall be kept in _the office of any licensee
or other person transmitting or distributing electricity in a.mine or oil-field.
(4)- The plans specified under this regulation shall be examined and corrected as
often as necessary to keep them up-to-date and the dates of. such examinations
shall be entered thereon by the manager or owner of the mine or wells and such
plans shall be available to the Inspector, or inspector of mines, at any time.
(4) In case of mines, minimum clearance above ground of the lowest conductor of
over head lines or over head cables where-dumpers or trackless vehicles are being
operated, shall not be less than twelve meters in height from the ground across the
road where dumpers or trackless vehicles cross.
244 THE GAZETTE OF INDIA: EXTRAORDINARY
98. Isolation and fixing of transformer and switchgear.- ( l') Transformers and
switchgear shall be placed in a separate room, compartment or box where ·
necessary to prevent danger of mechanical damage.
(3) ·All apparatus that has to be worked or attended to and all handles intended to
be operated shall be placed at a spacious working place which is accessible, clear
of obstruction and free froin danger, so far as circumstances permit. .
99. Method of earthing.- Where earthing is necessary in a mine it shall be carried out
by connection to an earthing system at the surface of the mine and in a manner
approved by the inspector of mines.
(2) The operation of the switchgear and the relays shall be recorded daily .at the
g¢nerating station, sub-station or switch station•in a register kept for the purpose.
(3) The effectiveness of the switchgear and the protective system shall always be
kept and maintained in working order, shall be checked once every three months
and the result thereof shall be recorded in a separate register kept for the purpose.
{OLEarthing metal.- (I) All metallic sheaths, coverings, handles, joint boxes,
- •·• '·"s'Witchgear,frames, instrurriei:it covers, switch and fuse covers of boxes, all lamp
holders, uriless efficiently protected by an insulated covering made of fire resisting .
material, and the frames. arid bedplates of generators, transformers and motors,
including portable motors, shall be· earthed .by connection to an earthing ~ystem in
the manner specified in regulation 99.
(2) Where cables are provided with a metallic covering constructed and installed
in accordance with clause (d) of regulation I 06, such metalli.c covering may be
used as a means ofcotmection to the earthing system. .
(3) All conductors, of an earthing system shall have conductivity, at all parts and
all joints, at least equal to fifty per cent of that of the largest conductor used solely
to supply the apparatus; a part of which desired to be earthed:
[ '1111 111~= 4 l 245
(4) All joints in earth conductors-and all joints ,in the metallic- covering of cables
shall be properly soldered or otherwise efficiently made.
(6) This regulation shall not apply, except in the case of portable apparatus, to
any system in a mine in which the voltage does not exceeid 30 V.
102. Voltage limits.- Electricity shall not be transmitted into a mine at a voltage
exceeding 11000 V<i.lts and shall not be used therein at a voltage exceeding 6600
Volts:
Provided thata
(i) where hand-held portable apparatus is used, the voltage shall not exceed
125V;
(a) in underground mines, the lighting system shall have a mid or neutral
point connected with· earth and the voltage shall not txceed 125 V between
phases;
(b) on the surface of a mine or in an,open cast mine, the voltage may be
raised to 250 V, if the neutral or the mid point of the system is connected
with earth and the voltage between the phases does not exceed 250 V;
(iv) where any circuit is used for the remote control or electric inter-locking
of apparatus, the circuit voltage shall not exceed 30 V:
Provided further that in fixed plants, the said voltage may be permitted
upto 650 V, if the bolted type plug is used.
103. Transformers.- Where electricity is. transformed, suitable provision shall be made
to guard ·against danger by reason of the lower voltage apparatus becoming
accidentally charged above its normal voltage by leakage from or contact .with the
.higher v-0hage apparatus.
(i) all parts shall be of mechanical strength sufficient to resist rough usage;
(iii) the lodgement of any matter likely to diminish the insulation or affect
the working of any switchgear shall He prevented; ·
(iv) all live parts shall be· so protected or enclose.d.as to prevent persons
accidentally coming into coniact with them and to prevent danger from arcs,
short-circuits, fire, water, gas or oil;
(v) where there may_ be risk of igniting gas, coal-dust, oil or other
inflammable material, all parts shall be, so protected as to prevent open
sparking; and
(2) At any time, when any cable or overhead line supplying electricity to the mine
from the aforesaid switchgear is live, a person designated to ·operate the said
switchgears shall· be available within easy reach thereof:
Provided that in the case of gassy coal seam of second degree and third
degree gassiness, the main mechanical ventilator operated by electricity shall be
interlocked with the switchgear so as to automatically disconnect the power supply
in the event of stoppage of main mechanical ventilator.
(3) When necessary in the interest of safoty, any apparatus suitably placed, shall
be provided for disconnecting the supply from every part of a system. ·
(6) Whenever required by the inspector of mines the motor shall be controlled by
a switchgear to disconnect automatically the supply in the event of conditions of
over-current, over-voltage and single phasing.
'll«! q,f 1J"['la : 3Rll'lRUT 247
(7) Auxiliary fan shall be interlocked with the switchgear controlling power
supply to the in-bye face equipment of below ground coal mine for automatic
disconnection ·Of power supply in the event of the stoppage of the auxiliary fan.
106.Cables.- All cables, other than flexible cables for portable or transportable
apparatus, shall fulfill the following reguirements, namely:-
(i) all such cables, other than the outer conducior of a concentric cable, dhall
be covered with insulating material and shall be efficiently protected from
mechanical damage and supported at sufficiently frequent intervals and in such
a manner as to prevent damage to such cables; ·
(ii) (a) except as provided in clause (iii) no cables. other than concentric cables
or single core or two core or multi core cables protected by a metallic
. coveting and which contain all the conductors of a circuit shall be used
where the voltage exceeds 125 V or when an Inspector considers that there
is risk M igniting gas or coal dust or other inflammable material, and so
directs;
(iii) where a voltage exceeding 250 V but not exceeding 650 V direct current
system is used, two single core cables may be used for any circuit provided that
their metallic wverings are bonded together by earth conductors so placed that
the distance berHeen any two consecutive bonds is not greater than thirty
metres measured along either cable;
(d) of a conductivity at all parts and at all joints at least equal to fifty per
cent of the conductivity of the largest conductor enclosed by the said
metallic covering; and
(e) where there may be risk of igniting gas, coal-dust, or other inflammable
· material, so constructed as to prevent, as far as practicable, the occurrence of ·
open sparking as the result of any fault or leakage from live conductors.
(b) the insulating material at. each cable end is efficiently sealed so as to
prevent the diminution of its irisulating properties;
107.Flexible cables.- (1) Flexible cables for portable or transportable apparatus shall
be two core or multi core, unless required for electric welding, and shall be
coverc,:l with insulating material which shall be. efficiently protected from
mechanical injury.
(3) Every flexible cable intended for use with portable or transportable apparatus
shall be connected to· the system and to such apparatus by properly constructed ·
connectors:
(4) At every point where flexible cables are joined ·to mainjiables, a circuit
breaker shall be provided which is capable of automatically ~\isconnecting the
supply from such· flexible cables: ;,.',
(6) If the voltage of the circuit exceeds 250 V, all flexible cables attached to any
transportable apparatus shall be provided with flexible metallic screening or
pliable armouring and cables of portable apparatus shall be provided with flexible
metallic screening on all the power and pilot cores.
Provided that the provision of this regulation shall not apply to flexible
cables attached to any transportable or portable apparatus used in open cast mines
or below ground mines where reeling and _unreeling of such cables is necessary as
per design features of the equipment.
(8) Flexible cable exceeding hundred metres in length shall not be used with any
• _portable or transportable apparatus:
Provided that such flexible cable when used with coal cutting machines or
cutter or loader or armoured face conveyor for long wall operation, or with shuttle
cars or load haul dumper or cutter loader or all alike equipment for development
and de-pillaring operation shall not exceed two hundred fifty metres.in length:
- Provided further that 'the aforesaid cable in casec of an open cast mine when
used with electrically operated heavy earth moving machinery shall not exceed
_three hundred metres in length and for bucked wheel excavator at 11 kV shall not
exceed one thousand metres in length.
(9) Flexible cable, when installed in a mine, shali be efficiently supported and
protected from mechanical injury .
•
(l0)Flexible cables shall not be used with apparatus other than portable or
transportable apparatus ..
•
(11) Where flexible cables are used they shall be detached or otherwise isolated
from the source of supply when not in use, and arrangements shall be made to
prevent the energising of such cables by undesignated persons.
3747 Gl/10-32
250 THE GAZETTE OF INDIA : EXTRAORDINARY [PART Ill-SEC, 4]
(2) All apparatus· other than portable and transportable apparatus shall be housed
in a room, compartment or box so constructed as to protect the contents from
damage occasioned by falling material or passing traffic.
(4) In case of a fault in any circuit, the part affected shall be made dead without
delay and shall remain so until the fault has been remedied.·
(5} While lamps are being changed the supply shall be disconnected. '
(6) No lampholder shall have metallic. connection with the guard or other metal
work of a portable hand lamp. ·
(7) The following notices in Hindi and local language of the district, so designed
arulprotected as to be easily legible at all times, shall be exhibited at the following
places, namely:-
(ii) in the interior or at the surface of the mine where a telephone or other
means of communication is provided, a notice giving full instructions to
person, at the surface of the mine, designated to effect the disconnection of
the supply of electricity to the mine. ·
HO.Precautions where gas exists. - (1) In any part of a coal-seam of the first degree
gassiness-
251
(iv) all electric lamps at any place which lie in-bye of the .last ventilation
connection and return airways shall be in flame proof enclosure and at other
places these shall be in increased safety enclosure type 'e'.
(2) At any place which lies-in any part of a coal-seam of second and third degree
gassiness-
(iii) all apparatus, including portable and transportable apparatus .used at any
place within ninety. metres of any working face or goaf in case of a second
degree gassy mine and within two hundred seventy metres of any working
face or goaf in case· bf third degree gassy mine or at any place which lies in-
bye of the last ventilation connection or in any return airways shall be flatne•
proof;
(3) Ia.any oil mine or oil-field, at any place within the zone-2 hazardous areas-
'
(i) all signaling and telecommunication, remote control and insulation tester
circuits shall'be so constructed, installed, operated, protected and maintained
as to be intrinsically safe;
(iii) all apparatus including portable and transportable apparatus shall have the
folluwina 'iypes of enclosures conforming to the relevant Indian Standards,
namely:-.
(a) flame'proof enclosure type 'd' or
r
(b) . pressurized enclosure type 'p' or
(c) sand filled apparatus type 'q' or
(d) increased safety enclosure type 'e', 'n' and 'o'
(iv) all electric lamps shall be enclosed in increased safety enclosure type 'e'.
252 THE GAZETTE OF INDIA : EXTRAORDINARY [PART III-SEC. 4]
(4) In any oil mine or oil-field, at any place within the zone-I hazardous areas-
(i) all signaling and telecommunication, remote control and insulation
tester circuits shall be so constructed, installed, operated, protected and
maintained as to be intrinsically safe;
(iii) all apparatus including portable arid transvortable apparatus shall have
the following types of enclosures conforming to the relevant Indian
Standards, namely:-
(a) flame-proof enclosure type 'd' or
(b) pressurized enclosure type 'p' or
(c) sand filled apparatus type 'q'
(5) In any oil mine at any place within zone-0 hazardous area no electrical
equipment shall be used and where it is not practicable, intrinsically safo "pparatus
, be used with the prior approval of the Inspector.
are only to .
(6) In any coal-seam of degree second and degree third gassiness or the hazardous
area of oil-mine the supply shall be discontinued;
(iii) the supply shall not be reconnected until the apparatus has been
examined by the electrical supervisor or one of his duly appointed assistants
and until the defect,_ if any, has been remedied
. or the necessary adjustment
.
made; and
(iv) a flame safety lamp shall be provided and maintained in a state of·
continuous illumination near an apparatus, including portable or
transportable apparatus, which remains energised and where the appearance
of the flame of such safety lamps indicates the presence of inflammable gas,'
the supply to all apparatus in the vicinity shall be immediately disconnected
and the incident reported forthwith to an official of the mine and such
apparatus shall be interlocked with the controlling· switch in such a
manner as to disconnect power supply automatically in the event" of
percentage of inflammable gas exceeding one and one quarter in that ·
particular _district:
(7) In any part of a coal-seam of any degree of gassiness or in any hazardous area
of an oil-mine, if the presence of inflammable gas in the general body of air is
found at any time to exceed one and one quarter per cent, the supply of energy
shall be immediately disconnected from all cables· and apparatus in the area and
the supply shall not be reconnected so long as the percentage of inflammable gas
remains in excess of one and one quarter per cent.
(9) Any such disconnection or reconnection of the supply shall be noted in the log
sheet which shall be maintained in the form set out in Schedule-XIII and shall be
reported to the inspector of mines.
(lO)The provisions of this regulation shall apply to any metalliferrous mine which
may be notified by the inspector of mines if inflammable gas occurs or if the
· inspector of mines is of the opinion that inflammaple gas is likely to occµr in such
mine.
(i) an area of not less than ninety metres around an oil-well where a
blow-out has occurred or is likely to occur, as may be designated by the
Engineer-incharge or the seniormost official present at the site;
(iv) any area within four and one half meters of:
(4) "Zone 0 hazardous area" ~eans "an area in· which hazardous atmosphere is
continuously present."
(5) "Zone I hazardous area" means "an area in which hazardous atmosphere is
likely to occur under nonnal operating conditions" ..
(6) "Zone 2 hazardous . area" means "an area in which hazardous atmosphere
. is
likely to occur under abnonnal operating conditions".
(2) Current from lighting or power circuits shall not be used for firing shots.
(3) The provisions of regulation ! 07 shall apply in regard to the covering and
protection of shot-firing cables, and adequate precautions shall be taken to prevent
such cable touching other cables and apparatus.
(i) adequate precautions shall be taken to prevent signal and telephone wires
coming into contact with other cables and apparatus;
(ii) the voltage used in any one circuit shall not exceed 30 V;
be used with the prior consent in writing of the Electrical Inspector, and subject to
such conditions as he may impose in the interests of safety.
Provided that when the system concerned is required for blasting_ and
signaling purposes, the provisions of this regulation shall not apply.
(ii) The electrical supervisor so appointed shall be the person holding a valid
Electrical Supervisor's Certificate of Competency, covering mining
installation issued under sub-regulation (1) of regulation 29 .
(iv) The Electrician shall be a person holding license under sub-regulation (1)
of regulation 29.
(v) For small open cast mines and below ground mines receiving supply at
voltage not more than 650 V and not having portable or transportable
apparatus, electrical supervisor and electrician shall be appointed for more
than one mine by the Inspector. ·
(2) Every person appointed to operate, supervise, examine or adjust any apparatus
shall be competent to undertake the work which he is required to carry out as
directed by the Engineer.
' (3) The electrical supervisor shall be responsible for the proper performance of
the following duties, by himself or by an electrician appointed under sub-
regulation (I).
(i) thorough examination of all apparatus, including the testing of earth
conductors and metallic coverings for continuity, as often as may be necessary
to prevent danger;
(ii) -examination and testing or' all new apparatus, and of all apparatus, re-
erected in lhe mine before it is put into service in a new position.
(4) In the absence of any electrical supervisor, the owner, agent or manager of the
mine and oil field shall appoint in writing a substitute electrical supervisor.
256 THE GAZETTE OF INDIA : EXTRAORDINARY [PART Ill-Sec. 4]
(5) (i) The electrical supervisor or the substitute electrical supervisor appointed
under sub-regulation (4) to replace him shall be personally responsible for the
maintenance at the mine or oil-field, of a log-book made up of the daily log
sheets prepared in the form setout in Schedule XIII. 0
(ii) The results of all tests carried out in accordance with the provisions of sub-
regulation (3) shall be recorded in. the log-sheets prepared in the form set out in
Schedule- XIII. .
ChapterX
Miscellaneous
116.Deviations.- (1} The Central Government or the State Government, as the case
may. be, by order in writing, allow deviations in respect of matters referred in
these regulations except regulation 30.
(2)The Electrical Inspector or the inspector of mines may, by. order in writing,
· allow deviations in respect of matters referred in regulations 12 to 17, 28, 35(2)(3)
and (5), 36(3), 37(i) to (iv), 41(xii), 43, 44(2), 46, 52 to 54, 57 to 61, 65, 72, 74, 78
to 91, 102, 107(6), (8) and (10) and 114
Explanation- Every order allowing the deviations by the Electrical Inspector or the
Inspector of Mines under sub-regulation (2) shall be placed before the Central or
State Government which may disaUow or revise such deviations.
Schedule-I
Part I
(1) Duration and content of training shall be as specified below:-
(a) Thermal Power Stations.- (i) The minimum duration of the trammg
courses for the operating engineers and supervisors (mechanical, electrical and
instrumentation) shall be as specified in Table I for coal based, diesel engine
based and gas turbine based thermal power plants. The contents of training
courses and on job training, along with respective duration, shall be as specified
in Part II, Ill, IV, V, VI, VII, VIII and IX of this Schedule, appropriate to the
.specialized course in mechanical or electrical or instrumentation Engineering.
Trainees should speµd time on observing different functions of Thermal Power
Plant along with its operation. After the lecture course is completed the trainees
should be taken on visits to a few modem power stations and factories
manufacturing turbines, generators, switch gear, instrumentation and auxiliary
equipment. The remaining period will be spent on in-plant training where the
candidates will be given an opportunity to operate or maintain the machinery
by themselves under close supervision of the regular operating staff as well as
the training supervisors. Arrangements shall be made for familiarizing the
trainees with the operation of power stations through_simulator facilities.
'IT«I qi! ~ : 3ffil'IR"T 257
TABLE I
3747 Gl/10-33
258 THE GAZETTE OF INDIA : EXTRAORDINARY
TABLE II
TABLE III
(ii) Th<;l minimum duration of the training courses for the technicians
(nwchanic<1!, electrical and instrumentation) to assist the operating engineers
and supervisors shall be as specified in Table IV for hydro power stations. The
cgnt\lnts of tr!\ining courses !\nd on job training, along with respective duflltion,
shall \Je <IS specified in Part XXI, XXII, XXIII and XXIV of this Schedule,
appropriate to the specialized trade in mechanical or electrical or
•
ins,trumentation Engineering. The procedure for familiarization visits and in-
plant training shall be similar to that which has been specified in respect of
• th1mnal power stations.
TABLE IV
TABLEV
Course duration for Engineers and Supervisors - sub-stations associated with
generating stations
(b) The Training Institute shall have a full time Principal and adequate number
of teaching staff. ·
(c) The Training Institute shall have adequate number of classrooms, seminar
and conference hall and auditorium, library, computer centre, workshops
(mechanical, electrical and basic workshops), laboratories (control and
instrumentation, water chemistry and relevant testing and research facilities).
The Training Institute shall have facilities for demonstration by static and
working models, simulators, training resource unit supported with Appropriate
reprographic facilities, Audio-visual training aides, Computer Based Training
(CBT) packages, Liquid Crystal Diode (LCD), Slide and Overhead projectors.
(d) The Training Institute shall have a regular lie-up "(ith the Power Stations,
Sub-stations, Load Dispatch Centres, transmission and distribution utilities
including hot line training centres so as to provide training in the respective
fields. ·
(e) The Institute shall have facilities to arrange refresher courses for those
personnel who have already experience in the operation_ and maintenance of a
·generating stition. The staff of the Training Institute shall be properly qualified
and preferably undergone a specialized training course in the art of imparting
training.
(f) The Institute shall have networking of training facilities with the reputed
educational or professional institutes:
(g) Assessment forms for Engineers and Supervisors and for Technicians to
assist the engineers and supervisors are given at Part XXVII of this Schedule.
[ 'WT IIl-'l911's 4 l 261
11art11 ·
XII Fuels: 3
(i) Solid, liquid and gaseous fuels analysis.
(ii) Coal-types and suitability for different kinds of
boilers-alterations in firing methods due to change of
coal composition.
•
XIII General understanding of Basic flow diagrams m power 3
stations practice :
(i) Coal cycle.
(ii) Fuel oil cycle.
(iii) Air and gas cycle.
(iv) Fly ash and bottom ash/ slag handling arrangements.
(v) Condensate and feed heating cycle (from condenser
hot well up to economizer).
(vi) Water and steam cycle (from economizer to turbine
inlet).
(vii) Chemical dosing circuit
(viii) Circulating water cycle.
(ix) Governing oil, turbine oil, generator, Seal oil circuit.
(x) Hydrogen filling in generator and hydrogen gland
sealing of generator. Bearing cooling system.
(xi) Stator water cooling cycle
264 THE GAZETTE OF INDIA: EXTRAORDINARY [PART III-SEC. 4]
3747 Gl/10--34
266 THE GAZETTE OF IND!A : EXTRAORDINARY [PART Ill-SEC. 4]
Total I 45 ½ Hours
=SWeeks
ParHII
IX D.C and A.C power supply for auxiliaries, arrangement of unit and 2
station switch cubicles, station lighting and auto.matic change over.
X Transformers - 3
Main transformers, interconnecting transformers, station/unit
transformers, and 11eutral grounding transformers, parallel
operation of transformers, on load and offload tap changing gears.
. .
XVIII Indian Boiler Rules, Factory Act, Electricity Act, 2003, Central 4
Electricity Authority (Measures _relating to Safety and Electric
Supply) Regulations, 2010 and other statutory Regulations
concerning power stations, Environmental _ Pollution Act/
Regulations.
Part IV
VI Gas Turbine Air Intake inlet air filtration, Exhaust system and 6
Compressor System, Gas turbine auxiliaries and governing system,
Air compressor and Air drawing'system
XI · Direct and closed cooling water circuits, cooling towers, types and
characteristics. ·
XII D.C. and A.C. power supply for auxiliaries, arrangements' of-unit. 2
and station boards, station lighting and automatic changeover.
xv Indoor and outdoor switch gear: Types - bulk oil, minimum oil, air 3
bla.st, SF6 , and vacuum circuit breakers, construction and functional
details.
3747 G//10--35
274 THE GAZETTE OF INDIA : EXTRAORDINARY [PARr Il!-Soc. 4]
XXII Indian Boiler Rules, Factory Act, Electricity Act, 2003, Central 4
Electricity Authority (Measures -_ relating to Safety and Electric
Supply) Regulations, 2010 and other statutory Regulations
concerning .Power Stations (General outline), Environmental
Pollution-Act/Regulations.
XXIII General plant maintenance procedure, PERT/CPM methods, power 6
station records, maintenance planning.
PartV
•
[ <!JTf 111-~ 4] "!Ra <fi"T ~ : 3rnl'lR"I Z/7
Part VI
m s
Maintenance planning and spares inventory, productivity, cost
control. 61 Hours
Total =2 Weeks
•
280 THE GAZETTE OF INDIA : EXTRAORDINARY [PART III-SEC. 4]
Part VII
Total 76 Hours
=2 ½ Weeks
•
xv On Job Training: 4 weeks
To·be associated with field maintenance Engineers in the area
of:
(i) Pressure parts maintenance
(ii) Rotary equipment maintenance
(iii) Pumps and drive maintenance
(iv) NDT and welding .
(v) Turbine and auxiliaries maintenance.
(vi) Steam and Gas turbine maintenance: Inspection of
combustion chamber, replacement of liners, air filters,
acid and alkaline cleaning of water coolers, NDT,
governor bearing inspections, exhaust area inspection,
replacement of guide vanes, cleaning of blade cooling
passage, maintenance of bleed valves, compressor
• cleaning .
3747 Gl/10-36
THE GAZETTE OF INDIA : EXTRAORDINARY [PART Ill-SEC. 4]
Part VIII
1 2 3
II Motor maintenance 4
VIII Line protection, fault analysis, bus-bar and local breaker back-up 4
protection (LBB).
XIX 4weeks
•
THE GAZETTE OF INDIA : EXTRAORDINARY - [PART Ill-SEC. 4]
284
Part IX
VIII. Actuators: 2
Operating principles of pneumatic, hydraulic and electrical
actuators and their control mechanisms, maintenance,
inspection and testing aspects.
IX Analytical instruments: 4
Theory and working principles- steam/ water analysers, like
conductivity, pH, Na, NH 3, Hydrazine etc., theory and
working principles of combustion monitoring instruments
such as CO2, 0 2, etc., interpretation of the above parameters
to the operating regimes of the plant.
Total 65 Hours
=2 Weeks
XV On Job Training:
XIX. Electric shocks, first aid, acid burn, alkali wounds, chlorine gas 3
poisoning and their treatment.
VIII Turbochargers: 6
(i) Fundamental principles of turbocharger··
(ii) Theory and operation of turbocharger
(iii) Monitoring and_protection of turbocharger
[<WTIII-=4l 289
3747 G//10-37
290 THE GAZETTE OF INDIA :· EXTRAORDINARY [PART III-SEC. 4]
XXIII 3
Storage battery- principle, construction, boost charging,
charging and importance of DC in DG power plant
140 Hours
Total ;:;5 Weeks
Part XII
XV. Electric shocks, first aid, acid bum, alkali wounds, chlorine 3
gas poisoning and their treatment.
Part XIII
Total 72 Hours
=2 ½ Weeks
Part XIV
· VI Pumps maintenance. 4
VII Shaft alignment methods. 4
X Mechanical safety 4
XI Vulcanizing 2
Part XV
III. Earthing and neutral grounding, necessity of, methods for, safety 4
rules while handling electrical equipments. Reading electrical
circuit diagrams
Total 74 Hours
=2 ½ Weeks
I
.
Pressure gauges '
- Bourdon•· type gauge, manometer, vacuum - 5
gauge, barometer, principles of operation, absolute pressure, gauge
and vacuum prcs1:ure aid th!:ir inter-relationship, calibration.
IX Actuator maintenance. 4
X Analytical instruments. 3
Total 68 Hours
· =2 ½ Weeks
Part.XVII
XIII Out door switchyard, bus bar arrangements, single line .diagram, 3
circuit breakers, isolators, current transformers, potential
transformers,- lightning arrestors, wave traps, coupling capacitor,
LMU and· three element protection devices, grounding
arrangements ..
XIV Indoor and· out door switch gear: Types: MCB, bulk oil, 12
minimum oil, air blast, vacuum, SF, breakers, constructional-
functional details and characteristics.
Part XVIII
Total 74 Hours
=2 ½ Weeks
XIV Statutory Electricity Acts and Rules, permit procedure and site 4
safety mies.
Part XX
VIII Actuators: 6
Operating principles of pneumatic, hydraulic and electrical actuators
and their control mechanisms, maintenance, inspection and testing .
aspects.
PartXXI
· Item Number
No. Particulars of Hours
1 2 3
I Funda:rriental 'ufflts, conversion of and measurmg electrical 2
quantities. · :it: " ·
Total 86 Hours
=3 Weeks
PartXXII
Particnlars. Number
Item ofHoursl
- No.
2 3
1
Operation and general aspects of annual maintenance of turbine 6
I
and auxiliaries
(i) Turbine
(ii) Inlet valve
(iii) Governing system
(iv) Shaft seal
III Types of valves- safety valve, suction valve, delivery valve, non- 4
return valve, bypass valve, drain valve, air release valve, control
valve, float operated valve, solenoid operated and pneumatically
operated valves and their applications .
•
IV Interpretation of instrument reading and accurate logging 2
•
V Workshop practice, making of spare parts, welding and gas cutting, 4
pipe fitting methods, introduction to various tools, tackles and
practice.
Total 42 Hnurs
=11/,Weeks
Total
80 Hours
=3Weeks
XX On job Training in above areas with hands on practicals.
4 weeks
['1T'T I I I - ~ 4] 309
PartXXIV
Total 48 Hours
=1 ½ Weeks
PartXXV
1 2 3
I General Introduction: 5
(i) World Power Scenario ,
(ii) Growth of Power Industry in India
(iii) Generation Scenario in India
(iv) Transmission and Distribution Scenario in India
(v) Role of Private Power Participants in India
(vi) Organisatioii/Power Sector set up
(vii) Introduction to Indian Standard specifications for
Electrical wiring
(viii) Energy conservation
VIII Breakers: 8
(i) Functions of breakers, their action.
(ii) Different types of outdoor and indoor breakers, e.g. bulk
oil, minimum oil and air blast, SF6- principles and their .
applications
(iii) Operating mechanism, manual, sprmg, hydraulic
pneumatic, motor
(iv) Breaker maintenance, failures and their causes,
Commissioning procedure
IX Bus bars: 6
(i) Indoor bus bars, their' capacity, forces on theni during
short circuit, bus bar mountings and their clearances
(ii) Strung ,end tub•ilar tf5,pe bus bars, their current ratings,
supports, jumper:;, clearances.
(iii) Busbar fittings and connectors
(iv) Cables of voltage exceeding 650 V, types, their
maintenance and testing
XI Isolators: 5
(i) Tilting and rotating isolators, with and without arcing
horns, horizontal center break type, tandem isolators,
earthing blades, current rating, breaking a circuit by
isolator, interlocking with circuit breaker
_ (ii) Maintenance of isolators
XIII Capacitors
xv Auxiliary supply: 5
(i) Current and. ampere-hour ratings of batteries, battery.
charging equipment, checking of specific gravity of
electrolyte, maintenance of batteries
(ii) Importance of direct current supply and its functions.
(iii) Auxiliary direct current supply
(iv) AC distribution board
XVII Earthing: 3
(i) Safety earthing and system earthing, the method of
earthing e.g., solid earthing, resistance earthing, peterson
coil earthing, earthing of lightning· arre·stor, importance
and advantages of each type
(ii) Different types of earth electrodes, earthing mats,
recommended values of earth resistance, measurement of
earth resistance
XIX Safety: I0
_ (i) Safety procedures and procedures for giving line clear
and taking it back. Maintenance of records of line· clear.
(ii) First-aid, artificial respiration and sh~ck treatment.
3747 Gl/10-40
314 THE GAZETTE OF INDIA : EXTRAORDINARY IP,\/U III~~SEC. 4]
Part:XXVI
II Equipments: 12
(i) Control/Relay panels and meters
(ii) Switch gear, Breakers
(iii) Isolators
(iv} Cables- types, construction and jointing·
(v) Power Capacitors
(vi) Lightning arrestors
(vii) CT, PT and carrier communication.
Cable Jointing:
VI Cables-types, selection, cable trenches, cable routing and laying, 3
cable clamping, jointing and te;~_nination of HT, power and
control cables and junction box, etc.
315
Earthing:
VII Sub-station earthing, equipment earthing and Consumer earthing 3
and procedure for improving quality of earth resistance
Duties of staff:
IX Duties of staff assisting supervisory and operating staff 'and 6
maintenance of records
Total
75 Hours
"c2 ½VVeeks
Part:XXVII
Section ..................................................................................... .
+(10)
Excellent 91-100%
Good 61-7Q%
Average 51-60%
Section-in-charge
(Power Plant)
Station Superintendent
f
THE GAZETTE OF INDIA : EXTRAORDINARY [PART lll-SEC. 4]
318
(II) ASSESSMENT FORM FOR ENGINEERS/SUPERVISORS_·
(6) Practicalexperience
..................................................... ..... ................. .
~ ;
· ..
Good 61-70%
Average 51-60%
Section-in-charge
{Power Pl;ufl)
Station Superintendent
[ "IT'l IIl-ll!U1l" 4] 321
3747 Gl/10-41
·"-,.
322 THE GAZETTE OF INDIA : EXTRAOIWINARY '""'t·rn ,,,·.41
Sdt,·dulr-1 I
Safety. measures for operation and maintenance of transmission and distribution
system
(See sub-regulation (3) of regulation (7))
Part I
( I ):J)uration and content of training shall be as specified below:
· (i) Engineerv\nd supervisors - The time allocation and various components of
,theJraining course. for e_ngineers and supervisors who would be engaged on
.operation and maintenance of transmission system shall be as given in Part II of
this Schedule.
(ii) Technicians -·The time allocation and various· components of the training
. course for ..technicians who would assist .· the engineers and supervisors in
-·OJ)llrationand-,maintenance bf transmission system shall be as given in Part rn
of this Schedule.
(iii) Engineers, Supervisors and Technicians - The time alldcation and various
. components of the t,raining course for engineers, supervisors and Technicians in
operation. and inaintenartce 'of sub-transmission and distribution system shall be
.is-
given in Part IV, Vand VlofthisScedule..
.
(iv) Refresher course O The.duration and contents of the refresher courses shall
.be determined jointly by the owner of the said system and training institute.
(v) Visits to factories-As part of practical training the trainees may be taken to
factories manufacturing , equipments used in .transmission and distribution
installations.
(vi) Performance of the trainee(s) - The trammg institutes shall group the
syliabus in modules for.organising the- training. The pass percentage in each'
module for theory and for project work shall be 50% Whereas for on job
training and for viva voce it shall be 75%. The sponsor(s) of the trainees may
consider the institution of incentives and awards for excellent perfomiance
during the training and also for suitable action for sub-standard performance.
IL Power Generation: 18
(i) Types•ofgenetatio!Y.'Conventional'and·non-conventional;
Thermal Power Plant: components/ equipments and their
brief details'and uses, features and characteristics of boiler,
turbine, generator, excitation;'etc. Brief operational
aspects; captive power plants·•
(ii) Hydro PowerPlant components/equipments' and their
brief details; features and characteristics of turbine
generator; excitation; etc. Brief operational aspects
(iii) Gas Powet Plant: conceptof open cycle and combined
cycle; components, characteristics of gas turbines, brief
operatiohal'i1spects, captive power plants·
(iv) Nuclear Pdwer Plant: salient features
(v) Non-Conventional Energy : various sources, working
prirtoiple;1electricity generation
(vi) Co•generation,optimal mix of different types of
generation; base load and peak load operation
(2) Contracts 12
(i) Contract basics, terminology
(ii) Qualification- requirement, pre-qualification, bids,
evaluation
(iii) Notice Inviting Tender (NIT), Notice Inviting
Quotation
(iv) Preparation of bid documents, tendering/ bidding
(v) Bid opening, bid evaluation, award of contract,
monitoring of contract.
. (vi) Contractual obligations/liquidation, guarantee
/warranty
( vii) Vendor - qualification, development
(viii) Contractual problems and solutions
(ix) Revised cost estimation, justification for cost/time
over-run, substitute items .
(x) · Handing/taking over procedures, closing of contract
(xi) Legal issues of contracts, arbitration
V. Management: 12
(i) Principles of management, leadership, effective
328 THE GAZETTE OF INDIA : EXTRAORDINARY [l'ARr Ill-SEC. 4]
V Storage Batteries: 6
Need, Functions, commissioning and maintenance
VI Earthing: 3
Sub-station earthing, equipment earthing and Consumer
earthing and procedure for improving quality of earth
resistance
X Rural Electrification: 9
(i) Outsourcing of distribution activities, appointment of
franchisees and selfload management by villagers 7
and Gram Panchayats
(ii) Maintenance of complaint centres and faultremoval,
etc., by village Panchayats etc.
(iii) Separation of rural and urban supply system
(iv) Fixation of responsibility for energy receipt and
supply balance. .
(v) Raj1v Gandhi Grameen Vidyutikaran Yojana. ·'
(vi) Distributed generation.
XJ Project Management: Contracts: 9
(i) Contract basics and terminology
(ii) Qualification - requirement; pre-qualification
(iii) Bids - Technical and Commercial
['ll'T.lll-~ 4] 335
PartV
V .Metering Requirements: 3
(i) Type of metering, viz. DT metering, feeder metering and
Consumer metering:
(ii) Regulations on installation..of meters• and technical .. •
standards
(iii) Meter types; theirsettings.and operation; testing and••
sealing.
VIII IT Intervention: 6
(i) Familiarisation with distributfonsoftware packages and
latest software tools and use thereof for billing and
3747 Gl/10--43
-338 THE GAZETTE OF INDIA : EXTRAORDINARY [PART ill-SEC. 4]
revenue realisation, GIS mapping and Consumer
indexing, Inventory contro 1, keeping track of
equipments failure rate, quick faµlt location,
attendance, staff salary, Energy accountabiJity and
MIS, etc. r
'
(ii) SCADA- RTU, communication and distribution
automation.
(iii) Customer care and call centres.
(iv) Enterprfae resource planning-
(a) Maintenance Management
(b) Asset Management
(c) Training Management
(d) Financial Accounting
(e)Material Management
(f) Outage Management
(g) Time Management
'
IX Rural Ele.ctrification: · 3
-J
(i) Outsourcing of distribution activities, appointment of
franchisees and selfload management by villagers and
Gram Panchayats. · ·
(ii) Maintenance of complaint centres and fault r\:moyal,
etc., by Village Panchayats, etc.
(iii) Separation of rural and urban supply system
(iv). Fixation ofresponsibility for energy receipt and supply
/
balance.
(v) Rajiv Gandhi Grameen Vidyutikaran Yojana.
(vi) Distributed generation.
XI Disaster Management: 3
(i) Institutional set-up for disaster management
(ii) Impact of .different types of disasters
[ "lflT I l l - - 4 l 339
(iii) Trigger mechanism and warning system
(iv) Check list and preparedness to address disasters.
(v) ' First aid techniques.
J 6
XII Electrical Safety Aspects:
(i) Basic principles of safety, importance of safety rules
and their observance .
• (ii) List of safety equipment, their use and maintenance
thereof.
(iii) Permit procedure- self permit, permit on phone and
procedures to be observed.
(iv) Electric shock, safety and procedure for recovery/
resuscitation.
(v) Causes of accidents, safe working procedures to avoid
accidents.
(vi) Principle and causes of fire, and prerimtions to be taken
to avoid fires.
t
Total
, 120 Hours
:4 Weeks
-
fPARr rn=Sisc'.
. --·-·· ---
·--- \ __
41. -
. IBlnit'W !
:SftlLim.llSflm'mEOIINIOldSlENG~lfN· \l!HE<@PERJ\IBIONAND
~ N A N C E < 0 F ; s m ; ; ~. DDfflS,'lllUBIJlllON'S¥STEM .
r
lltem lP.imiculars Number
,ofllours
.3
ii :(l)verview,ofiPower'SectorSaen:ario: 3
(i) Growth•ofiPower!lndustry,in 'India.
'(ii;) <0rganisation/iPower'Sector set.;up:in :India...
:(iii;) 13leatncity1Bistmbution,inilndia ·
•tiv) rnrivatelRarticiipation in Distribution.
i(¥) · D.istliibution!Reformslin'lndia.
'll •Srib4ransniission:andIDlistributionLines: 9
(i,) 'Slmt~y,for ilines,atvoltage,qpto250 V, 'lines at·voltage.
,above,650 ¥olts'but iless:tban 33kW:and .for:service 'lines
,and•:caliles,ant1'omssings•sudh ,as road, :railway, ri¥:er,and
,othenpower,anll1tele.com!Jjnes, ,
(ii) Selection of lline,materials,and,towers/cpdles,and ·safe
•handliqg,of<the;same.
•(iii) . 'Erectiomof,towershpoles -•size•ofpit,,concreting.and
;pole/to.wenalilµnnent,,etc. ·
:(iv) Line Gonlluctors--1tNPes, selectiomcriteria, '.conquctor
0
stringiqg,jriintiqg/lbinding,:Bagging,antt,tensioniqg,
.clippingamlliju111Pmiqg:and,earlhiqg,an-angi:meirts.
,tv) Types,dfstl!,yS, ,its1matking,,groutiqg,•stay,instilator,
binding, 't!tc.
,(.vi) 'Cable-rt)!pes,ssele.oticn,,citllleitrenches,•cable,routing
.andllayiqg,<clililejjointillg,anllijunotionlhox,c:etc.
1~vii<) ·!f.~s,df!guarlling,andcdlearances,,earth·wire/.neutral .
·wire,,anti--1llinibing·devices.and•danger·boards.anll·•their
· erection.
,fviii}Selection ••anll 'fixing •Of ,control oevices, •viz. Gang
· 'Operating 'Switches, ffuses, 'Isolators anti ·earthing
switches,.ilightning•arrestors,,and,llistributionibox,,etc.
(ix) Installation,ofservke,lines.
(x) Street iligllting -Hayout:inethods.
(xi) 'Line-meggi:ring:antl(commissioning•oftlistribrition lines. ·
•(xii1 Line•patrolling, iinspection; ,periodicity, ·work permit, line
,olear-ant1,authorisation,1treercutting,ano;safe<.dlearances,
,er1:ctionqrlltempomr,y,earth,,attending,to1breakdowns.ano
:estoratiomdf.suf1ply, ·
(xiii) 'Maintenance T&P:and:safet,ycllevic.es, ffihermo -vision
·scanniqg,,hcit'spots,,etc.
'(xi:v,) \l!forline,maintenance.
JV MeteringRequirements: 3
(i) Type of metering, viz. DT metering, feeder metering
and Consumer metering.
(ii) Regulations oil installation ofmeters and technical ·
standards
(iii) Meter types, their settings and operation, testing and
sealing.
(iv) Computerised billing.
VIII Rural'Electrification: 3
(i) Separation of rural and urban supply systems.
(ii) Rajiv Gandhi Grameen Vidyutikaran Yojana.
IX Disaster Management: 3
(i) Impact of different types of disasters.
(ii) Check list and preparedness to address disasters.
(iii) First aid techniques.
-Precautions to be observed
(1) Hotline Maintenance train~u personnel only are designated to do work on line.
(2) Work permit will be taken from the terminal substations at each end of the line.
(3) Work shall be performed with _proper planning and prior understanding and
clarity.
343
(4) Favourable climatic condition for hotline operations is sunny weather. If the
weather forecasts rain or thunderstonns work will not begin.
(5) Organisation of work shall be discussed among the members and responsibility
of each team member fixed. . .
(6) Before going to ihe work site all equipment and tools shall be inspected and
checke.d for correct operation.
(7) Auto re-closure shall be in 'OFF' position for the line at both ends.
(8) The work procedure shall be discussed with the team member at the tower
location .and the responsibility of each member shall be properly defined.
(9) The land in close vicinity to the tower shall be cleared to provide a site area for
the required tools.
(10) AHcleaned hot sticks, strain carrier and other assemblies shall be kept on the
hotline tool rackto avoid ground contact.
(1 !) Wear helmet, safety shoes and safety belt shall compulsorily be used.
(12) All hot sticks and ladders shall be cleaned and checked for integrity by the hot
sticks Tester.
(13) All linemen in the hotline team shall be equipped with personal protective
equipment during the work.
(14) No live-line team members onthe tower and conductor shall wear any metallic
chain, wristwatch or ring to avoid any circulating current.
(15) The team linemen will wear conductive socks, boots, helmets and hand gloves.
The 'hot-end' lineman shall wear complete bare hand suit.
( 16) Tarpaulin sheet should be laid on the work area .
. (],]) A light vehicle shall be kept nearby during entire '\YOrk period.
( 1) Wire tongs
(2) Wire tongs saddle
(3) Tie sticks
(4) Strain link sticks
(5) Roller link sticks
(6) Suspension link stich
(7) Auxiliary anns
(8) Strain carrier
(9) Gin poles
(10) Cum-a-aiong~clamp
(1 I) Safety equipment like conductor guards, X-ann guards, insulator covers, hand
gloves etc.
(12) Hot sticks
344 THE GAZETTE OF INDIA : EXTRAORDINARY· [PART JU-SEC .. 4]
33 0.71
66 .• 0§1
110 1.02 ..
132 1.07
220 1.52
400 2.13
. .
.
.··.
Schedule-IV
Forms of Inspection Report
[See subs regulation (3) of regulation (30))
3747 Gl/10-44
346 THE GAZETTE OF INDIA : EXTRAORDINARY · [PART III-SEC. 4]
FORM II
(Installations of voltage level more than 250V np to and including 650V)
.
made and kept up to date duly attested ?
.
•
8. Regulation- (i) Is/Are there any visible sign(s) of . Yes/No .
12 overloading in respect of any apparatus '
wiring?
(ii) Whether any unauthorised temporary Yes/No
installation exist?.
(iii) Are the electric supply lines and apparatus Yes/No
so installed, protected, worked and
l - -
maintained as to prevent danger ?
(iv) Any other general remarks.
9. Regulation- Give report_ on condition of service lines, Sat'
13 cables, wires, apparatus and such other fittings s
placed by the supplier or owner of the
premises. If not satisfactory give details .
- -~~--- -~----c-- -
---
348 THE GAZETTE OF IND)t\ : EXTRAORDINARY [PART III-SEC. 4]
16 the supplier?.
(ii) General visible condition of the earthing Satisfactory/Not
arrangement. Satisfactory
13. Regulation- (i) Are bare conductors in building Yes/No
17 inaccessible?
(ii) Whether readily accessible switches have Yes/No
.
.
been orovided for rendering them dead?
14. Regulation- Whether "Danger Notice" in· Hindi and the Yes/No
18 local language of the district and of a design as .
FORM Ill
( Installations of voltage exceeding 650V )
Report No. - - - - - Date oflnspection
1 Date of Last inspection-------,----
SI. Regulation Requirements Report.
No. Nos
1. Regulation-3 Is the register of the .designated persons Yes/No
properly made and kept up to date duly
attested? .
2. · Regu]ation- (i) Is/Are there. any visible sigh(s) of Yes/No
12 overloading in respect of any apparatus?
(ii) Whether any unauthorised temporary Yes/No
installation exist?
(iii) Whether the motors and controlling Yes/No
equipment are being over hauled
periodically and record kept of the same in
a register?
(iv) Whether the transformer oil samples are Yes/No
being tested periodically and results
recorded in a register?
(v) Whether suitable lightning arrestors have Yes/No
been provided near the transformers for
protection against lightning?
(vi) Whether earth resistance is being Yes/No
measured periodically and results recorded
in a register?
(vii) Any other defect or condition which may Yes/No
be a source of danger. If Yes· please
explain?
(viii) Whether operation and maintenance Yes/No
data has been clarified, categorized and
computerized for . prompt and easy
retrieval?
(ix) Whether predictive maintenance is. being Yes/No
performed .· for installation of voltage
exceeding 650V?
(x) Whether residual life assessment and life Yes/No
extension progrannnes are being
undertaken for installations or equipment
of voltage exceeding 650V (applicable for
installations or equipment more than }5
years old)?
(xi) Whether all required type and routine tests at Yes/No
.factory·done for equipments. Deficiencies and
Discrepancies in above test report and results,
if any, shall be reported?
(xii) Are there deficiencies in . construction with yes/No
'----'--------'--------
352 THEGAZETTEOFIND~:EXTRAORDmARY [PART III-SEC. 4]
.
General Observations : .
SI.No. Item Observations
l. Check of required phase to phase, phase to ground and -
.sectional clearance.
Schedule-VI
Date:
Schedule-Vil
( 1) The above values are valid for altitude not exceeding 1000 m. A correction
factor of 1.25 per cent per 100 m is to be applied for increasing the clearance for
altitude more than 1000 m and upto 3000 m; ·
(2) The above safety working clearances are based on an insulation height of
2.44 m which is the height of lowest point on the insulator, wheieit meets the
earthed metal, from the ground;
(4) The "Highest System Voltage" is defined as the highest rms phase to phase
voltage which occurs under normal operating conditions at any time and at any
point of the system. It excludes voltage transients (such as those due to system
switching) and temporary · voltage variations due to abnormal system conditions
(such as those due to fault conditions or the sudden disconnection oflarge loads).
3747 Gl/10-46
THE GAZETTE OF INDIA : EXTRAORDINARY [PART III--SEC. 4]
362
Schedule-VIII
(1) The above ground clearances are not applicable to equipment that are housed
within fence or a building and where access is prevented under er\eigised condition
through a suitable safety interlocking scheme;
(2) The above pole to earth c.learances · are · for conductor-structure electrode
configuration using gap factor k equal to 1.35.
(3) It is recognised that within a substation many different types .of electrode
configurations shall be there with different values ofk, therefore, the above clearance
shall be modified based upon the values of gap factor for a particular electrode
configuration subjected to the minimum ground clearance.
(4) Clearance shaJl be provided for electrical apparatus so that sufficient space is •
available for easy operation and maintenance without any hazard to the operating and
maintenance personnel working near the equipment_ and for ensuring adequate
ventilation.
[ "ll'l IIl-l§!U,l" 4 l 363
Schedule-IX
Date:
[
364 TI-IE GAZETTE OF INDIA : EXTRAORDINARY ,
,. • .. • • • • _. • • • • .. , M11xm.
Daflectlcl'i
VCL
!! Qffld1atar
j J,atlfll!l~i
I • .. • . .!. .
VC.L
GCL GCL
This fonn must be correctly filled up by the owner, agent, manager or engineer
and sent 10 .the Inspector •not later .than the first day ofFebruary .every year. ·
Part A
Year ending, 20
Name.of Mine State
Situation of Mine District
·Postal address of Mine
Nllllle and address ofowner
Name ofagent
Name •Of manager
D Name .ofengineer
Nl!me ,of Electrical .Supervisor
PartB
(i~ System of supply (whe.ther direct .current or alternating current)
Voltage ofsupply
Periodicity (if.alternating current)
Source of supply,
(2) Voltage at.which electricity is used for:-
!.,ighting
Power
(3) Particulars of Motor etc.
POWER-
(a) Ori Surface
Type of Motor (H.P./K.W.) Type of.control.gear Location Purpose for which •used
/ apparatus and voltage -
(blln Mine
Type of Motor Type of Location• Purpose for Ventilation Percentage of
,(H.P./K:W.) I contFol which,used inflammable gas·
.apparatus ,and voltage gear· orvapour
:LIGHTING
Type of:light fitting Wattage . Location Percentage ofinflammable
gas or vapor
THE GAZETTE OF INDIA : EXTRAORDINARY [PART Ill~SEC, 4]
366 .
Schedule-XII
This form must be correctly filled up by the owner, agent, manager or engineer
and sent to the Inspector not later than the first day of February every year.
Part A
Year ending 20
Situation of Oil-field State
Name of Oil-field District
Postal address of Oil-field •
Name and address of owner
Name of agent
Name of manager
Name of engineer
Name of Electrical Supervisor
PartB
(1) System of supply (whether direct current or alternating current)
Voltage of supply.
Periodicity (if alternating current)
Source of supply.
(2) Voltage at which electricity is used for:-
Lighting
l;'ower
(3) Particulars of Motor etc. in use on the field :-
(a)On wells .
No. or other identifying Drilling or Type andH.P No. oflamps Other electrical
Markofwell pumping of motor and type appliances
1 2 3 4 5
Tvoe and H.P of motor Puroose for which used Identifying mark on mao
1 2 3
(4) Other electrical appliances, not including in item3, in use on the field.
Appliances Type and size in KW. Purpose for which used · Identifying mark on map
[ 'WT lll--1§11Js 4] "IRl! qiJ =: 3IBT'IR"l 367
Schedule-XIII
[See sub-regulation (9) of regulation (llO), clause (a) and (b),ofsub-regulation (S) of
regulation (llS)J
Printed by the ·Manager, Government of India Press, Ring Road, Mayapuri, _New Delhi-I I.0064
arid Published by the Controller of Publications, Delhi-110054.