REPAIR AND MAINTENANCE TO ISOLATION TRANSFORMERS, VOLTAGE STABILIZERS, OVER HEAD LINES, PAINTING OF STEEL POLES AND ALLIED WORKS AT 20 WING, 273 SU AND 46 WEU UNDER GE AF BAGDOGRA

Amount

Material and Labour for online dehyderation, filtration and cleaning of transformer oil, isolation transformer/ Servo voltage stabilizer etc at different locations by suitable dehgydration plant testing of oil sample before and after dehydration for each transformer/equipment and results of transformer insulation oil minimum upto 11 KV with 2.5mm gap, recorded jointly by contractor and Engineer-in-Charge complete including all necessary tools, plants, transportation etc all as specified/directed by Engineer-in-Charge. Note :- (i) Oil for toping up/fresh fill shall be measured and paid seperately under relevant item. (ii) Certificate for oil testing resultbefore and after filtration shell be submitted to Engr-in-Charge immediately after testing.

Material and Labour for toping up oil level with and including new insulating oil confiming to IS-335 including all necessary tools, plants, transportation etc all as specified and directed. Note :- (i) Certificate from manufacturer for oil testing result shell be submitted to Engr-in-Charge immediately after topping up.

Material and labour for preparation of surfaces for steel poles painting of any size by scrapping damaged paint and painting with two coats of silver aluminium paint and writing pole No with black paint on yellow circuit the bottom of pole to be painted with yellow and black paint as per the existing all as directed by Engineer-in-Charge.

All as per item No 3 above but 2 pole structure complete with all structural steel.

All as per item No 3 above but 4 pole structure complete with all structural steel.

M&L for re-starching of ACSR conductor and removeing unwanted saging including trimming of trees branches 1.5 mtr clearance form OH conductor . One span between two poles is considered as one job all as specified and directed.

Dismantling of ACSR or AAC conductors complete all as specified and directed.

Material and Labour for replacement in repair of ACSR conductor , alkathine pipe, aluminium lugs, nuts, bolts etc. all as directed by Engineer-in-charge.

Dismantling of GI cradle/earthwire/stay strand complete all as specified and directed.

Supply and fix GI continuous earth wire 4mm dia for cradle/guarding connecting properly to cross arms hook etc with and incl 22 SWG binding wire all as specified and directed.

Supply and fix in repairs power contactor block 4 pole for resistive and off- load switching application with AC coils,2NO+2NC of capacity 32 Amp complete with necessary fixing all as specified .

All as per above item No 11. but 63 Amps

All as per above item No 11. but 110 Amps

All as per above item No 11. but 205 Amps

All as per above item No 11. but 300 Amps

Supplying and fixing in repair of Pin type, porcelain, vitreous, white, brown or green insulator including one galvanised mild steel spindle, two galvanised iron washers and one galvanised iron nut, 100mm height, 65mm dia all as specified and directed.

Supplying and fixing in repair of Shackle Type, Porcelain, vitreous, white, brown or green insulator including galvanised mild steel straps, washers, insulator bolts, washers and nuts, 75mm height, 90mm dia all as specified and directed.

Supplying and fixing in repair of Disc type insulator, porcelain, vitreous 145mm high and 255mm dia ball and socket type, white, brown or green 'Two-in-series' assembly for tension with tension clamps for conductors, all as specified and directed.

M&L for repair to dismantling isolation transformer/ Servo voltage stabilizer of any make and single phase upto 5 KVA at workshop completely by removing coils, laminations, tank cleaning, reassembling of core and winding, with old serviceable parts and rewinded coils and other new parts in lieu of damaged parts, including brazing, soldering sleeveing and insulating etc as required and oven drying of core assembley including transportation all as directed by Engineer-in-charge. (Note : Spares required shall be measured and paid separately under relevant items)

All as per item No. 19 but three phase 5 to 20 KVA

All as per item No. 19 but three phase 25 to 75 KVA

All as per item No. 19 but three phase 100 to 200 KVA

All as per item No. 19 but three phase but above 200KVA to 630 KVA

Supply and fixing in replacement new copper coil of short circuit /over heated winding Isolation transformer and servo voltage stablizer of any make and upto 10 KVA capacity with matching gauge and turns of super enamelled copper winding wire complete with leathered paper, glass sleeves, varnishing, baking etc all as specified and directed by Engr-in-Charge.

All as per item No 24 above but capacity above 10 KVA and upto 630 KVA

Supplying and fixing in repair of Under voltage, over voltage and surge protection display (display only) kit at out put section complete suitable for isolation transformer/ Servo voltage stabilizer of any make and capacity upto 20 KVA.

All as per itm No 26 above but capacity above from 20 KVA and upto 200 KVA

Dismantling and fixing in repair of Under voltage, over voltage and surge protection kit complete of VCT D2 din rail mounting variant with digital display, auto/manual reset (timing and monitoring relay) complete protection kit suitable for isolation transformer/ Servo voltage stabilizer of any make and upto 20 KVA capacity.

All as per itm No 28 above but from 25KVA to 30 KVA

All as per itm No 28 above but from 50KVA / 75 KVA

All as per itm No 28 above but from 100KVA / 125 KVA

All as per itm No 28 above but from 200KVA / 315 KVA

All as per itm No 28 above but 315KVA / 630 KVA

Dismantling and fixing after minor repairing and maintenance of Servo control board and performing suitable repairing and servicing at site , testing the same after required servicing complete for single phase Servo Stablizers all as specified and directed.

All as per item No. 34 above but for three phase servo stablizers

Supply and fixing in repair of Servo control card suitable for Servo voltage stabilizer of any make and single phase all as specified and directed by Engr-in-Charge.

All as per Item No. 36 above but for three phase

Supply and fixing in repairs sevo motor starting torque of 3KG/Cm complete with necessary fixing arrangements all as specified and directed

All as per Item No. 38 above but for 10 KG/Cm

All as per Item No. 38 above but for 20 KG/Cm

Supply and fixing in repair of Limit switch suitable for isolation transformer /Servo voltage stabilizer of any make and capacity all as specified and directed by Engr-in-Charge.

Supply and fixing in repair of Carbon brush suitable for Servo voltage stabilizer of any make and capacity all as specified and directed by Engr-in-Charge.

Supplying and fixing in repair of Manual change over switch , single phase 1 KVA to 10 KVA MCB change over type suitable for Servo Stablizer and Isolation Transformer complete all as specified and directed.

All as above but item No 43 but Auto change over.

Supplying and fixing in repair of Manual change over switch, three phase MCB change over type suitable for Servo Stablizer and Isolation Transformer of upto 20 KVA/ 25KVA capacity complete all as specified and directed.

All as above but item No 45 but from 75KVA to 100 KVA capacity.

All as above but item No 45 but from 125KVA to 200 KVA capacity.

All as above but item No 45 but from 315KVA to 630 KVA capacity.

Suppling and fixing of Isolation Transformer over load control card with out cut off relay suitable for any three phase isolation transformer all as per specified and directed.

Supply and fixing in repair of DT Switch suitable for isolation transformerof any make and capacity as per site requirment all as specified and directed by Engr-in-Charge.

Supply and fixing in repair of DT Switch suitable for Servo voltage stabilizer of any make and capacity as per site requirment all as specified and directed by Engr-in-Charge.

Supply and fix in repairs Digital type Voltmeter 0-500 volt, complete with necessary fixing all as specified and as directed by Engineer-in-Charge. Make - L&T /Semens/Legrand

Supply and fix in repairs ammeter 0-250 amps, Digital type, with CT operated complete with necessary fixing all as specified and as directed by Engineer-in-Charge.

M&L for replacement of unserviceable nuts/bolts/washer all as per site requirement and as directed by Engineer-in-charge.

Material and labour for preparation of surfaces for Isolation transforme/Servo Stablizers of any type or capacity,painting by scrapping damaged paint and painting with two coats of suitable paint as per existing one and writing MES/MS No with white paint on black circuit all as directed by Engineer-in-Charge.

M&L for taking out old unserviceable MCCB TP/TPN four pole from existing LT panel board and supply and fix MCCB TPN 125 amps capacity, rup capacity 25 KA at 415 volt 50 Hz AC supply including necessary modification in panel board as per site requirement to fix the MCCB complete with replacement of incoming and out going cable connection with lugs, aluminium conductor cable of proper size, nuts bolts all as directed.replacement of brunt lugs and wire/cable pieces etc as required at site.

All as per Item No 57.00 above but 200 amps capacity, 36 KA complete all as specified and as directed by Engineer -in-Charge

Supply and fix in replacement of MCB, SP 6 to 32 Amps, 240 V , 10KA complete with necessary fixing all as specified .

Supply and fix in replacement of MCB, SPN upto 32 Amps, 240 V , 10KA complete with necessary fixing all as specified .

Supply and fix in replacement of MCB, TPN upto 32 Amps, 240 V , 10KA complete with necessary fixing all as specified .

Supply and fix in existing panel for repairs 4 pole on load changover switch of capacity 125 amps, complete with necessary fixing all as specified .

Supply and fix in existing panel for repairs 4 pole on load changover switch of capacity 200 amps, complete with necessary fixing all as specified .

Supply and fix in existing panel for repairs 4 pole on load changover switch of capacity 315 amps, complete with necessary fixing all as specified .

NOTES :- 1. The amount of schedule of credit shall be deducted from the total of this BOQ for arriving at contract sum. 2. Unless otherwise specified the rates for PCC shall deemed to include the cost of formwork shuttering etc., required for complete and proper execution of the work. Refer Schedule A notes for details.

SHRI P P SHARMA

INDIA DEVELOPMENT CONSTRUCTION

M/S MOHAN GHOSH

M/S B K ENTERPRISE

SUNIL DAS AND CO

M/S Banerjee construction co

M/S P K ROY AND CO