WBPWD/EE/PED/NIQ26 /2025-2026

Cable, Cable laying and alliied work Supply of PVC insulated 1.1KV grade Al Armoured cable.(Make-Glowster/Polycab)

4cx300 sq mm(WBSEDCL NORMAL PANEL)

4cx240sq mm(WBSEDCL main panel to normal sub panel feeder piller1)

4cx150 sq mm( main WBSEDCL Panel to Administrative normal panel )

4cx50 sq mm(,main WBSEDCL panel to NCD Cell- 180mtr,,main panel WBSEDCL to district medical officer-120mtr,main WBSEDCL to district raiser-40mtr)(Sub panel feeder piller to Basundhara building-60mtr,Sub panel feeder piller to Vaccine store-45mtr,Sub panel feeder piller to district medical store 1&2- 245mtr)

Laying of two cables above 185 sqmm in an underground trench in single tier formation (horizontal), the trench size : 680 mm x 760 mm average depth, with brick protection on the top of each cable 8 (eight) Nos. bricks per Mtr. and 4 (four) Nos. bricks per Mtr. as separator between the bricks and cables and also trench to be filled up with shifted soil, levelling up and restoring surface duly rammed(F2/2c)

Laying of two cables above 35 sqmm and upto 185 sqmm in an underground trench in single tier formation (horizontal), the trench size : 680 mm x 760 mm average depth, with brick protection on the top of each cable 8 (eight) Nos. bricks per Mtr. and 4 (four) Nos. bricks per Mtr. as separator between the bricks and cables and also trench to be filled up with shifted soil, levelling up and restoring surface duly rammed(F2/2b)

Supplying and fixing compression type gland complete with brass gland, brass ring & rubber ring for dust & moisture-proof entry of XLPE/PVC armoured cables as below :upto 4cx300 sqmm(F4/7c)

4cx240sq mm

4cx150 sq mm

4cx50sq mm

Finishing the end of following XLPE/PVC armoured cables by crimping method incl. supplying and fixing solderless socket (Dowels make), tapes, anticorrosive paste & jointing material4core 300 sqmm cable(F5/bxxiii)

4cx240sq mm(F5/bxxii)

4cx150sqmm(F5/bxx)

4cx50sqmm(F5/xvi)

Supplying & fixing medium gauge GI Pipe ( ISI-Medium) Protection with necessary fittings and jointing metarials as required100 mm dia(F6/11g)

(a) Supply and Installation 415v 415A porcelin cut out(3nos & neutral connector) with 10 mm thickness hyiamp sheet.

Supplying and fixing 415V, TPN on load front operated Changeover switch with Sheet Steel enclosure on angle iron frame on wall with nuts(D2/3a) bolts etc

160A(L&T/Havells)

200A (L&T/Havells)

Supplying and fixing 415V, TPN SFU with sheet steel enclosure on flat iron/angle iron frame on wall with nuts bolts etc incl. S & F 3 nos. DIN type HRC fuse as per rating.(D3/4a)

160A(L&T/Havells)

200A (L&T/Havells)

MAIN NORMAL PANEL WBSEDCL

Supply and installation of CPRI approved cubical type compartmentalized floor cum wall mounted LT panel board of suitable size and shape for existing panel room and made of 2mm thick CRCA sheet steel ,angle/flat iron for structural frame work & follow by nine tank pre-treatment of entire encloser with powder coated finish paint having copper busbar and following equipment & accessories,protection required of panel is IP54.All equipment must be installed on 10mm thickness hylamp sheet.

All incoming & outgoing switches are to be housed in respective compartments hinged and gasket doors at the front. All doors should have panel locking arrangement in such a fashion that it can not be on unless the feeder remains in off position. The rear panel should gasketed wire net guard for ventilation arrangement will be made of easy accessibility to each compartment by providing rear panel doors with locking system . The panel is to be properly gasketed to prevent the dust & vermin. All vertical bus bar chambers is to properly arrange and all electrical equipments are to be fixed by nuts and bolts on suitable Hylam board / porcelain insulators of adequate size and dimension. The outgoing feeder connection from respective switches are to be made at rear side of panel by means of busbar, copper multi core cables, to be terminated on bolted type terminals for cable connection or on bush insulators for bus bar connection. Each compartment will be providing with DMC/FRP board at back side.

Incoming:

.(a)415v,400A rated current,Rated short circuit current50KA,No of pole-3 ACB(Make-L&T/HPL)-1 no (b) 415V 415 Amps TPN SFU units with HRC fuses (Make:- L&T/Havells ]----

Busbar:

415V, 600Amp capacity 99.9% – 99.5% electrolytic tinned 4 bar copper bus bar [4 x (2x 40x5)mm] of suitable length 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 - 1 set. The busbar is to be rigidly supported on suitable non-hygroscopic insulating materials of robust ration to with stand electromechanical stress in the event of earth fault. All connection to bus to made by suitable nuts & bolts. The busbar is too wrapped with coloured PVC (Red. Yellow, Blue & Black) for colour identifications

Outgoings:

(b) 415V ,250Amps TPN SFU units with HRC fuses (Make:- L&T/HAVELLS )---- 2 No.

(b) 415V ,160Amps TPN SFU units with HRC fuses (Make:- L&T/HAVELLS )---- 2 No.

(c) 415V 100Amps TPN SFU Unit with HRC Fuse(Make-L&T/HAVELLS)-6 nos.

Interconnection:

All interconnection between incoming main to Busbar are to be made with suitable size electrolytic tinned copper bars or equivalent flexible pve insulated multistranded single core Cu cable and the same between busbar to each outgoing mains and & for metering arrangements are to be made by suitable size of Copper with proper socketing of the end of each wire leads.

Instruments:i)LED multifunctionmeter(L&T)-1no,ii)415/5A CT (Kappa Make)-3nos,iii)LED type indicating lamp (RYB)with sliding fuses(seimens/Esbee)-3set,iv)6A TPMCB-1no,v)EI danger board 1 no.

NORMAL SUB PANEL1(Feeder piller)

S & Installation of a outdoor type stand mounted feeder pillar box having size 1500(H) X1200(W) X500(D)mm made of 5mm thick CRCA sheet & 3mm thick top rain canopy by proper welded at all edges fixed on 60X60X6mm angle iron frame with hinged & gasketted acess door both (Back & front) two part type.The door has been double handle with necy two nos locking arrangements.it has also been separated into two parts by S& F Hilamp sheet of (10mmThick)inside middle of pillar box(Maintaining 2" gap for all side) .The pillar box has been four legs of 4 ft long of MS angle(60x60x6mm),Provision for proper ventilation system (2 nos in each side ). the FP box will be painted by two coats of synthetic enamel aluminium paint (both inside & out side)over R.O primer after preparation the MS surface . The FP box will be installed by grouting the legs with sole plate below 2ft the ground level & 2ft aboveground level by CC mixture incl necy brick work. Both below & above ground level with net cement plastering at four side of the muffing incl cutting soil & mendinding good the damages .

All incoming & outgoing switches are to be housed in respective compartments hinged and gasket doors at the front. All doors should have panel locking arrangement in such a fashion that it can not be on unless the feeder remains in off position. The rear panel should gasketed wire net guard for ventilation arrangement will be made of easy accessibility to each compartment by providing rear panel doors with locking system . The panel is to be properly gasketed to prevent the dust & vermin. All vertical bus bar chambers is to properly arrange and all electrical equipments are to be fixed by nuts and bolts on suitable Hylam board / porcelain insulators of adequate size and dimension. The outgoing feeder connection from respective switches are to be made at rear side of panel by means of busbar, copper multi core cables, to be terminated on bolted type terminals for cable connection or on bush insulators for bus bar connection. Each compartment will be providing with DMC/FRP board at back side.

Incoming:

(a) 415V 250 Amps TPN SFU units with HRC fuses (Make:- L&T/Havells ]---- 1 No.

Busbar:

415V, 315Amp capacity 99.9% – 99.5% electrolytic tinned 4 bar copper bus bar [4x40x5mm] of suitable length 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 - 1 set. The busbar is to be rigidly supported on suitable non-hygroscopic insulating materials of robust ration to with stand electromechanical stress in the event of earth fault. All connection to bus to made by suitable nuts & bolts. The busbar is too wrapped with coloured PVC (Red. Yellow, Blue & Black) for colour identifications

Outgoings:

(a) 415V ,200Amps TPN SFU units with HRC fuses (Make:- L&T/HAVELLS )---- 2 No.

(a) 415V ,100Amps TPN SFU units with HRC fuses (Make:- L&T/HAVELLS )---- 2 No.

(b) 415V 63Amps TPN SFU Unit with HRC Fuse(Make-L&T/HAVELLS)-4 nos.

Interconnection:

All interconnection between incoming main to Busbar are to be made with suitable size electrolytic tinned copper bars or equivalent flexible pve insulated multistranded single core Cu cable and the same between busbar to each outgoing mains and & for metering arrangements are to be made by suitable size of Copper with proper socketing of the end of each wire leads.

Earthing:Earthing with 50 mm dia GI pipe 3.64 mm thick x 3.04 Mts. long and 1 x 4 SWG GI (Hot Dip) wire (4 Mts. long), 13 mm dia x 80 mm long GI bolts, double nuts, double washers incl. S & F 15 mm dia GI pipe protection (1 Mts. long) to be filled with bitumen partly under the ground level and partly above ground level driven to an average depth of 3.65 Mts. below the ground level as below:By ISI-Medium GI pipe

Connecting the equipments body to earth busbar including S & F 25 mm x 6 mm galvanised (Hot Dip) MS flat on wall/floor with GI saddles as required and connection to equipments incl. drilling holes, with bolts, nuts, washers etc. [G-3/5(d)]