NIT No. 13(2021-22) Item no. 27

LT Distribution panel sheet steel enclosure made out of 2 mm CRCA sheet totally enclosed, powder coated free standing, floor mounted type, dust & vermin proof, outward opening, lockable doors having hidden hinges and a bolted back cover both using non-deteriorating neoprene rubber gaskets to provide IP-54 protection .The each part of the fabricated panel will be strictly subjected to seven tank treatment. The various components, assemblies and sub equipments of the panel will be as per standard given in relevant IS. The bus bar Size: 50 mm X 10 mm (suitable for 400 Amp.) of the panel will be shaped out of high conductivity, electrolytic conductor and shall be liberal sized in aluminium. The control wiring of the panel will be done with PVC flexible copper wires of 1.5mm cross section. Each wire will be terminating with a ferrule crimped to the wire. Size of Panel : 2000 mm (Length) x 1800 mm (Height) x 375 mm (Width) . Having following components of approved make. The panel board shall be mounted on the base frame of 1 feet height made of 60x60x6mm angle iron frame.

MCCB 415V, 4 Pole, 3 phase High breaking capacity 50 KA 50 Hz, 400 Amp with spreader & handle . Make:- L&T/Siemens

MCCB 415V, 3 Pole, 3 phase 50 KA 50Hz, 100 Amp with spreader & handle. Make:- L&T/Siemens

MCB Single pole 6 Amp. Make:- L&T/ Siemens

MCB Triple pole 32 Amp. Make :-L&T/ Siemens

MCB Triple pole 63 Amp. Make:- L&T/ Siemens

Copper wire flexible 35 sq mm single core. Each Roll is of 100 Mtrs. Make: Finolex/Havells

Power capacitors 415V unit of 15 Kvar Make:- Havells /L&T(251/-P/KVAR)

Over load relay 36-60 Amp Make:-L&T/Siemens

Over load relay 6-10 Amp Make:- L&T/Siemens

Digital Amp. Meter:-Make AE/L&T

Digital Volt Meter 0-500V .Make:- AE/L&T

Motor protection Relay Make:- L&T/Siemens

Power contactor 220V 3phase 80 Amp. Make:- L&T/Siemens

Power contactor 220V 3phase 50 Amp. Make:-L&T/Siemens

Power contactor 220V 3phase 25Amp. Make:-L&T/Siemens

Star delta timer on delay. make:- L&T/Siemens

Indicating lights LED type RYB & On/OFF Make:-L&T/ Siemens

Current Transformer 100/5 & 30/5. Make:- AE /Advance

Current Transformer 400/5 Make AE /Advance

On load change over switch 400 Amp. 415V .Open execution type Make:- L&T/Havells

Fixing of the above components in panel enclosure with terminal blocks, channels, ferrules, thimble, support insulator on bus bar required hard wares, control wiring in 1.5 sq mm single copper wire complete in all respect.

Dismantling of old panel, structure ,damaged components and insulation of the panel at site by making foundation, termination of cable both incoming and out going side ,meggaring of complete panel, including cable connections .Taking out all the dismantled items from the LT Panel room and shifting the same to safe place as per direction of Engineer-in- charge. This includes cartage ,loading and unloading by crane or heavy labour etc.

Testing & commissioning of panel, as per required parameters with relevant IS. Testing of the panel prior to switching on as follow :- i) Continuity and earth testing ii) Meggaring of all equipments for phase to phase, neutral to body, neutral to earth and phase to earth. iii) Checking for all tightness of nut and bolts etc.

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