WBPHED/EE/BMD/NIeT-3 OF 2025-2026/3

Amount

Supply and delivery 25 KVA Oil Coolling type Voltage Stabiliser, having unbalance 200 - 500V input voltage, and 415(±1%) out put voltage , Auto/manual servo voltage stabilizer with U/V,O/V,O/L protection with contactor at out put side, input MCB, Ammeter Bell etc. as per I.E rules and as per tecnical specification given in NIT N.B.:- Manufacturer Test Certificate for Stabilizer, core material, winding copper & oil should be produced at the time of delivery

Supply, delivery at site of following items

100 Amps 415 Volt TPN Sheet steel enclosed HBC Fuse type Heavy Duty Double Break Main Switche with Sidet handle operated

100 Amps 415 Volt TPN Sheet steel enclosed Onload Changeover Switch side handle operated.

100 Amp 415 Volt TPN sheet metal (16 SWG) Iron Clad Busbar chambers on angle iron frame on wall, incl. earthing attachment and painting as required i) 4way

25 Sq. mm, 3.5 core, XLPE Al, Ar cable of 1.1 KV grade. conforming to As Per IS-7098 (Part 1) 2011 with Up To Date Amendments.

Making Earthing Arrangement

Excavation of soil for installation of earth electrode and filling & ramming

a) for soft soil (1m x 1m x 1.5m) x 4 nos

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

Extra for providing masonery enclosure on the top of the earth electrode of overall size 86.36 cm x 86.36 cm x 46 cm deep (below Ground level) complete with cemented brick work(1:6) of 25 cm width duly plastered with cement morter (inside) CI hinged inspection cover of size 36.56 cm x 35.56 cm with locking arrangement, GI reducer including drilling of 46 nos. 12 mm dia holes on the GI pipe

Extra for treatment of soil by using salt & charcoal or coke for plate electrode

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.

Taking out of all old electrical item from wall i.e. Main Switch, change over, Voltage stabiliser Al.Ar cable from switch room as per direction

Installation and commissioning of above voltage stabilizer and other acessories by supplying all required materials laying of cable making socketing finishing of cable supplying cable gland etc and making C.C Foundation as per requirement and as per direction of EIC. by engaging skilled technician as per Technical specification and upto entire satisfaction of EIC.

Carrying charges of all old matrials from Pump House to Ahilakundi, Bankura BMD office premises including Loading & unloading charges as per direction

Add: 18% GST

Add: 1% Cess

PRADIP KUMAR DHABAL (BID ID -6478044)

ABHIJIT MUKHERJEE (BID ID -6478139)