NATIONAL ALUMINIUM COMPANY LIMITED - Rites

SN IS Standard with Latest
Amendment
Title
SWITCH GEAR
39 IS:4237 – 1983
40 IS:675(Part-1) – 1973 Control Switches (switching devices for control and
auxiliary circuits including contractor (relays) for
voltages upto and including 1000 v AC and 1200 v DC:
41 IS:6875(Part2) – 1973 Control Switches (switching devices for control and
auxiliary circuits including contractor (relays) for
voltages upto and including 1000 v AC and 1200 v DC:
42 IS:6875(Part-3)-1980
43 IS:10027-1981
44 IS:4064(Part 1) -1978 1978 Air break switches, air break disconnectors, air break
switch disconnectors and fuse combination units for
voltages not exceeding 1000 v AC or 1200 v AC :
General requirements.
45 IS:2675 – 1983
46 IS:8828 – 1978
47 IS: 13032 – 1991
48 IS:12640 – 1988
49 IS:2959 – 1985
50 IS:2516(Part01/Sec 1 – Circuit breakers: Requirements and tests: Voltages
1985
not exceeding 1000 v AC or 1200 v DC.
51 IS:12021 – 1987
52 IS:5039 – 1983
Technical Specification:Sec-6, Electrical
General requirements for switch gear and control
gear for voltages not exceeding 1000 V ac or 1200v dc
Control Switches (switching devices for control and
auxiliary circuits including ncluding contractor (relays) for
voltages upto and including 1000 v AC and 1200 v DC:
Composite unit o air break switches and rewireble
type fuses for voltages not exceeding 50 V AC.
Enclosed distribution fuse boards and cutouts for
voltages not exceeding 1000 V.
Miniature air break circuit breakers for voltages not
exceeding 1000 volt.
Miniature circuit breaker boards for voltages upto
and including 1000 volts AC.
Residual current operated circuit breakers.
Voltages not exceeding 1000 v AC or 1200 v DC.
Specifications for control transformers for switch gear
and control gear for voltages not exceeding 1000
volts AC.
Distribution pillars for voltages not exceeding 1000 V.
Page 88 of 97