Replacement, Supply installation and Commissioning of LT Distribution panels in Admin Building inside Factory area at OFMK.

Amount

Supply and Erection, Installation & Commissioning of LT Distribution Panel

i) Indoor type floor mounting LT Distribution panel with Air Circuit Breaker/MCCB as incomer and MCCBs as outgoing feeders, suitable for 415 V ,3 Phase 4 wire 50 Hz AC supply system made out of min 2mm CRCA steel sheet suitably bended and welded to impact strength with sand blasting, powder coated with separate housing for incoming and each outgoing MCCB, suitable for bottom cable insertion and incomer to ACB with suitable supporting arrangement. The doors shall be hinged type edges of the Front /Back door shall be provided with knobs, with a neoprene rubber gasket, the nuts and bolts used are of rust proof. The whole panel shall be mounted on base frame made of structural steel channel. The panel shall be compartmentalised, the busbar and cable alley shall be shrouded by barrier plates.

ii) TPN Aluminium Bus Bar shall be of high conductivity aluminium and of 0.8 Amps/ mm2 having fixing arrangement with proper insulating material to isolate each phase and neutral. Provision of Heat shrinkable insulating sleaves to the bus bars with colour coding. Busbar shall run throughout the length of the chamber and shall be extendable type. Minimum electrical clearance shall be maintained between phase and neutral and body as per standards.

iii) Copper earth bar of size 50x 5mm to be fixed in the panel for earthing

v) Separate and adequate compartments shall be provided for accommodating instruments, indication lamps, fuses etc

vi) All the MCCBs should have Extended rotary handles ,phase separators, spreaders, locking device, removable base plate, Neutral links, extended terminals, adjustable thermo magnetic setting, Overload protection, Short Circuit protection. Indication lamps ON, OFF, TRIP, RYB phase indication lamps LED type.

Indoor Distribution panel : Supply, Erection & Commissioning of of LT indoor Distribution panel shall have a provision of the following (without ACBs and MCCBs) i) Air circuit breaker 800 amps, 4 pole,50 KA as Incommer. and the following as outgoing MCCBs ii) MCCB, 3 pole, 250 A, 35KA -4Nos iii) MCCB, 3 pole,125A,16KA-4 Nos iv)MCCB, 3 pole,25-100A, 16KA-4 Nos v) Street Light controller switch with 40 amps, 4pole MCB, 10 KA -1 No., MNX 32 amps TP contactor-1 No, Street Light Timer - 1 No. with power and control wiring (Sl. No. 1 to 1.06 specifications also applicabel for this item)

Dismantling of Panel: Dismantling of existing Electrical panels including disconnection of cables, glands etc completely and shifting to stores as instructed by EIC.

Air circuit Breaker : Supply and Fixing of ACB 4 Pole, 415 V, Manual Drawout type with microprocessor release of capacity 800 Amps, 50KA breaking capacity with Earth fault ,Over load , short circuit protection, shunt trip , Ics=Icu=Icw (1 sec) and auxiliary contacts, LCD Back light Display, Front ON/OFF indication, spring charge/Discharge indication, 3 distinct mechanical positions indication, suitable power pack for shunt trip, Make GE /Areva T&D/Schneider/ Siemens/ L&T/ABB The incomming ACBs are to be installed and commissioned in the LT Distribution Panel as mentioned above SL.No.1

MCCB (Moulded Case circuit Breaker): Supply and Fixing of MCCB 3 Pole, 415 V, Adjustable type, 250 Amps with breaking capacity 36 KA The outgoing Moulded Case Circuit Breakers are to be installed and commissioned in the LT Distribution Panel as mentioned above, Confirms IEC 60947, IS 13947. Make:- GE/Schneider /Siemens/ L&T/ ABB.

MCCB (Moulded Case circuit Breaker): Supply and Fixing of MCCB 3 Pole, 415 V, Adjustable type, 125 Amps with breaking capacity 16 KA The outgoing Moulded Case Circuit Breakers are to be installed and commissioned in the LT Distribution Panel as mentioned above, Confirms IEC 60947, IS 13947. Make:- GE/Schneider /Siemens/ L&T/ ABB.

MCCB (Moulded Case circuit Breaker): Supply and Fixing of MCCB 3 Pole, 415 V, Adjustable type, 25 to 100 Amps with breaking capacity 16 KA The outgoing Moulded Case Circuit Breakers are to be installed and commissioned in the LT Distribution Panel as mentioned above, Confirms IEC 60947, IS 13947. Make:- GE/Schneider /Siemens/ L&T/ ABB.

GAYATHRI ENGINEERS