Technical data
CHAP-04.10 ELECTRICAL POWER DISTRIBUTION, DRIVES, CONTROL &
ILLUMINATION ELECTRICAL
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coupler for repair network like welding sockets, maintenance cranes
and hoists. All PDBs to be mounted in Technological/Auxiliary/Service
buildings (Other than Electrical room) will have double doors.
Enclosure Class will be IP54.
8. Main Lighting Distribution Boards (MLDB) with two incomers and one
bus coupler for Power supply to various Lighting distribution Boards
(LDB). Enclosure Class of MLDB & LDB will be IP54.
Adequate nos. of LDBs and Sub Lighting distribution boards for
providing power to light fittings.
9. Emergency lighting distribution boards (ELDBs) with two incomers and
one bus coupler for Power supply to various Emergency Sub Lighting
distribution Boards (ESLDBs) and feeding arrangement will be as per
GTS.
Adequate nos. of Emergency Sub Lighting Distribution Boards
(ESLDBs) for providing power to emergency light as given below :
20% Emergency lighting in all Junction houses, Process /
technological buildings, pump houses, compressor houses,
conveyor tunnels, underground premises, LTSS, Despatcher /
Control rooms, staircases, entry / exit of building, office rooms,
attendant / operators rooms, shift in charge rooms, canteen / rest
rooms etc.
10% Emergency lighting in conveyor galleries.
10. Exit light from UPS distribution board for the following areas :
LTSSs / Electrical premises.
Dispatcher / Control rooms.
11. Portable Emergency lights will also be provided in strategic areas like
LTSSs, Electrical premises, control rooms, staircases, entrance of
cable tunnels / basements, escape routes, attendant / operators room
in the technological buildings etc.
12. DCEM Brakes with economizing resistance will be used for Conveyors
and brake panels will be housed in MCC room.
A Brake panel will not feed power to more than 2 nos. of brakes.
13. Surge protection device will be provided at the incoming side of MCCs,
VFDs, Soft starters, PLCs/Remote I/O stations etc. to protect the
system/equipment as required.
14. All field devices, valves, safety switches like Pull chord switches and
belt sway switches, zero speed switch, chute jamming switches and
Proximity switches, Warning hooters, level sensors, relays, limit
switches, isolators, speed sensors etc. as necessary for the process
and control of the material handling equipment / system and its all
associated / auxiliary equipment / systems.