Retrofitting of Electrical Distribution System by replacing Bus Trunking with Supply and laying of different size of Cabling arrangement and double feeder arrangement for DG source to Boys Hostel at WBJA Campus Rajarhat New Town Kolkata-700156

S1TC of floor mounting cubicle type indoor compartmentalized 415 Volt 50Hz. dust & moisture proof L.T- distribution panel (CPRI tested) board fabricated from 16 SWG CRCA sheet. The panel should have adequate strength and space to accommodate the incoming & outgoing switches and bus bars with all inter connections in between the switches & bus bars with copper flat bar of suitable capacity. The panel should be provided with cable alley for facilitating connection of all the incoming & outgoing XLPE cables with termination arrangement by supply & fixing copper terminal bar / bolt of required sizes. The 2 nos. G.I earth bus bar should run along the full length of the panel board. The incoming terminals of ACB & MCCB as well as outgoing terminals of MCCB should be provided with Extra copper bar of suitable capacity for smooth termination of double feeders. All incoming / outgoing ACB / MCCB units should have identification as djrected by the E.I.C. The panel board should be painted by powder coated paint & the layout diagram of the panel board should be approved by the E.I.C before manufacturing. The panel board should cornprise with the followings: a) Incoming:- a) S/F of 415 Volts 1600 A Breaking capacity 50KA Version C-Power 4 pole EDO type ACB with Mcroprocessor Based SR18G and castle locking arrangement as incomer for 1 no. Normal Supply and other 1 no 1000KVA DG source electrical connection with both the bus. bars(Mk.-L & T/ SIEMENS/ HAVELLS)- 2 nos. b) S/F of 415 Volts 1600 A Breaking capacity 50KA Version C-Power 4 pole EDO type ACB with Microprocessor Based SR18G ACB and castle locking anangement, as Bus Coupler, induding electrical connection with both the busbars.(Mk.-L & T/ SIEMENS/ HAVELLS) -1 no b)Busbar chamber:- 2000 A capacity 4 bar electrolytic tinned copper bus bar mounted on non-hygroscopic porcelain insulator /hylam sheet having sufficient di-electric strength duly wrapped with colour PVC tapes (Red yellow, blue & black) for phases & neutral

Outgoings:- a) S/F of 415 Volts 1000 A Breaking capacity 50KA Version C-Power 4 pole MDO type ACB with Microprocessor Based SR18G for two Nos. Rising Main.(Mk.-L & T/ SIEMENS/ HAVELLS)-2 nos b) 415 Volts 630 A 36KA 4 pole MCCB with Microprocessor Release(Mk.-L & T/ SIEMENS/ HAVELLS) -2 Nos c) 415 Volts 315A, 4 pole open execution type SDF DIN fuse link along with Fuses (Mk.-L & T/ SIEMENS/ HAVELLS) -4 nos d) 415 Votts 250A, 4 pole open execution type SDF DIN fuse link along with Fuses (M k.-L & T/ SIEMENS/ HAVELLS) -16 Nos Metering:- a) 3 Ph Digital voltmeter(Mk.-L & T/SIEMENS) -2No b) 3 Ph Digital ammeter (Mk.-L & T/SIEMENS)- 2 no • c) 1600/5 Amp ratio C.T (Kappa) -6 nos d) 250 Volts L.E.D (RYB) source indicating lamps . -6 nos e) 6A 240V SP MCB (10KA) -6 nos f) E1 danger board- 2 set Interconnections :- All the interconnections between busbar to outgoing switches and outgoing switches to cable alley will be done with suitable size copper bars and SS nuts-bolts.

SITC of floor mounting cubicle type indoor compartmentalized 415 Vol 50 Hz. dust & moisture proof L.T. distribution panel board fabricated from 16 SWG CRCA sheet. The panel should have adequate strength and space to accommodate the incoming & outgoing switches and busbars with all inter connections in between the switches & bus bars with copper bar of suitable capacity. The panel should be provided with cable alley for facilitating connection of all the incoming & ougoing XLPE cables with termination arrangements by supply & fixing copper tenninal bar / bolt of required sizes. The G.I earth bus bar should run along the full length of the panel board. The incoming terminals of SFU as well as out going teminals of SFU should be provided with Extra copper bar of suitable capacity for smooth termination of feeders. All incoming / outgoing SFU units should have identification as directed by the E.I.C. The panel board should be painted by powder coated paint & the Layout diagram of the panel should be approved by the EIC before manufacturing the panel board should comprise with the followings : Incoming:- Supply and fixing of 250A, 415V, TPN SFU with HRC fuses (Mk.-L & T/ SIEMENS/ HAVELLS)- 1 no BUSBAR Chamber:- 315 A capacity 4 bar electrolytic tinned copper bus bar mounted on non-hygroscopic porcelain insulator / hylam sheet having sufficient di-electric strength duly wrapped with colour PVC tapes (Red, yellow, blue & black) for phases & neutral identification . Outgoings:- (i) Supply and fixing of 160A 415V TPN, SFU with HRC fuses(Mk.-L & T/ SIEMENS/ HAVELLS) -1 no (ii) Supply and fixing of125A 415V TPN, SFU with HRC fuses(Mk.-L & T/ SIEMENS/ HAVELLS) -1 no Metering:- a) 3 Ph Digital voltmeter(Mk.-L & T/ SIEMENS) -1 No b) 3 Ph Digital ammeter (Mk.-L & T/SIEMENS)- 1 no c) 300/5 Amp ratio C.T (Kappa) -3 nos d)250 Volts L.E.D (RYB) source indicating lamps -3 nos e) 6A 240V SP MCB (10 KA) -3 nos f) El danger board- 1 set Interconnections :- All the interconnections between busbar to outgoing switches and outgoing switches to cable alley will be done with suitable size copper bars and SS nuts-bolts.

SITC of floor mounting cubicle type indoor compartmentalized 415 Vol 50 Hz. dust & moisture proof L.T. distribution panel board fabricated from 15 SWG CRCA sheet. The panel should have adequate strength and space to accommodate the incoming & outgoing switches and busbars with all inter connections in between the switches & bus bars with copper bar of suitable capacity. The panel should be provided with cable alley for facilitating connection of all the incoming & ougoing XLPE cables with termination arrangements by supply & fixing copper tenninal bar / bolt of required sizes. The G.I earth bus bar should run along the full length of the panel board. The incoming terminals of SFU as well as out going teminals of SFU should be provided with Extra copper bar of suitable capacity for smooth termination of feeders. All incoming / outgoing SFU units should have identification as directed by the E.I.C. The panel board should be painted by powder coated paint & the Layout diagram of the panel should be approved by the EIC before manufacturing the panel board should comprise with the followings : Incoming:- Supply and fixing of 415V, 50KA, 800A, 4P MCCB (Mk.-L & T/ Shneider/ SeimensABB)- 1 no BUSBAR Chamber:- 800 A capacity 4 bar electrolytic tinned copper bus bar mounted on non-hygroscopic porcelain insulator / hylam sheet having sufficient di-electric strength duly wrapped with colour PVC tapes (Red, yellow, blue & black) for phases & neutral identification . Outgoings:- (i) Supply and fixing of 415V, 50KA, 630A, 4P MCCB (Mk.-L & T/ Shneider/ SeimensABB)- 2 nos Metering:- a) 3 Ph Digital voltmeter(Mk.-L & T/ SIEMENS) -1 No b) 3 Ph Digital ammeter (Mk.-L & T/SIEMENS)- 1 no c) 800/5 Amp ratio C.T (Kappa) -3 nos d)250 Volts L.E.D (RYB) source indicating lamps -3 nos e) 6A 240V SP MCB (10 KA) -3 nos f) El danger board- 1 set Interconnections :- All the interconnections between busbar to outgoing switches and outgoing switches to cable alley will be done with suitable size copper bars and SS nuts-bolts.

Dismantling of 1600A ACB and reinstall in floor mounted cubicle enclosure

Supply, Installation, testing & commissioning of LT Panel extendable, bolted type construction , single front , fixed type, compartmentalised, front operated, back openable, LT cubicle panel suitable for incoming and out going cable entry from bottom having ingress protection of IP 54, suitable for operation on 433V 3 phase 50 HZ power supply fabricated out of 2 mm thick CRCA sheet steel for load bearing and 1.6 mm for non- load bearing members, ISMC 75 base channel, gland plate of 3mm thick having sheet metal pretreatment through 14 tank process and powder coated with approved shade, with high tensile bolts for busbar fastening, hardware’s will be cadmium plated to withstand corrosion atmosphere prevailing at site with 2000 Amp (4x(2x50mmx10mm)) TPN Copper busbar suitable to withstand 50KA fault level for 1Sec, Bus bars supports of a heat resistant thermoplastic, with shrouding of solid metallic partitions, wiring will be carried out by using flexible copper conductor of FRLS type cable of 1000V grade complete with supply of following equipment including inter connection as required. [Make - CPRI approved pannel builder, scaned copy of type test report for 50KA short circuit and heat run test from CPRI by the panel manufacturer to be uploaded by the bidder under technical cover]. (Make: Seimens/ Schneider/ L &T/ ABB) for housing 1 Nos (Existing) - 1600 Amp 415V, 50KA ( 4Pole MDO (Manual Draw-out) type ACB as per item no. 04 Metering a) 3 Ph Digital voltmeter(Mk.-L & T/SIEMENS) -1No b) 3 Ph Digital ammeter (Mk.-L & T/SIEMENS)- 1 no • c) 1600/5 Amp ratio C.T (Kappa) -3 nos d) 250 Volts L.E.D (RYB) source indicating lamps . -3 nos e) 6A 240V SP MCB (10KA) -3 nos f) E1 danger board- 1 set

Supplying & fixing sheet metal (16 SWG) 500x150 mm Iron Clad Busbar chambers on angle iron frame on wall, incl. earthing attachment and painting as required – ( As per Drawing no. 470 of PWD Specification Book – May 1991) with 85 mm long 4 x (2x 80x5) mm cu bus bars

Supplying and fixing 4 core compression type gland complete with brass gland, brass ring & rubber ring for dust & moisture-proof entry of XLPE/PVC armoured cables as below : i) 4 core, upto 300 sqmm

ii) 4 core, upto 120 sqmm

iii) 4 core, upto 70 sqmm