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| 1 | Disconnecting electrically and mechanically outdoor distribution transformers upto 100 KVA 11KV / 0.44 KV capacity, outdoor /indoor type lowering down from 4/6 pole structure/plinth with electric precaution incl lifting of core assembly by opening of top cover and other items for checking of faults/repair and lowering / refixing the same in its original position after inspection to make it ready for transportation to carry out testing in workshop including transportation of unservicieable transformer workshop ( rate is deemed to be inclusive of transportation , T&P and men power ) and reinstalled after repair at its original position complete all as specified and directed. |
| 2 | Disconnecting electrically and mechanically outdoor distribution transformers upto 500 KVA 33KV / 11 KV capacity, outdoor /indoor type lowering down from 4/6 pole structure/plinth with electric precaution incl lifting of core assembly by opening of top cover and other items for checking of faults/repair and lowering / refixing the same in its original position after inspection to make it ready for transportation to carry out testing in workshop including transportation of unservicieable transformer workshop ( rate is deemed to be inclusive of transportation , T&P and men power ) and reinstalled after repair at its original position complete all as specified and directed. |
| 3 | Taking out the unserviceable copper winding from transformer of capacity upto 500 KVA after opening top cover, and carrying out the following repair work complete all as specified and directed :- (a) Dismantling of all attachment viz breather assembly, conservator, oil temperature gauge, HT/LT bushing etc. and keeping aside for reuse..(i) Taking out the core with winding assembly.(ii) Removing of complete winding from core and dismantling the core, cleaning of core laminate sheet and keeping aside for reuse(iii) Cleaning of complete transformer tank oil fins, removing of sludge, and making the inside surface of tank dry by blowing of hot air as directed and specified.(iv) Painting of outside surfaces of transformer complete by means of spray machine as directed.(v) Replacement double paper coated insulation including all requisite insulating materials like packing sleeves, separator, tapes etc. heating, varnishing the core and winding assembly after framing up top and bottom steel structure of transformer all as specified and directed. (vi) Fixing only HT procelain bushing with studs, nuts, washers 3 Nos. and LT procelain bushing with studs, nuts, and washers 4 Nos. and connection with primary and secondary windings and reconnecting with the main terminals as required and directed. (vii) Fixing only breather assembly, conservator, oil temperature gauge after proper cleaning, minor repairs etc. as required and directed.(viii) Replacement of all unserviceable gasket from top cover, HT/LT bushing with new one by using rubberised gasket sheet 4.0mm/6.0mm thick duly pasted with suitable adhesive .(ix) Replacement of unserviceable bolts with new one and fixing of existing serviceable bolts, nuts, washers of different sizes and tightening properly.(xi) Repositioning of core and winding assembly inside the tank, assembling complete unit and making the transformer ready for filling oil and subsequent testing as directed. (xi) Filling/topping up of new transformer oil of required quantities . |
| 4 | Supply only HT coils with super enamelled copper wire /DPC of high quality duly matching with the existing guage and impedance complete all as specified and as directed. |
| 5 | Supply only LT coils with super enamelled copper wire strip/DPC of high quality duly matching with the existing guage and impedance. |
| 6 | Supply and fill unused mineral insulating oils conforming to IS 335: 2018, Type II Class (Transformer oils), Uninhibited (U), pour point -10⁰C, vacuum filtered in a laboratory, Breakdown voltage of min 70 kV at 2.5 mm gap complete all as specified and as directed. |
| 7 | Filtration, Dehydration, reconditioning of transformer oil by using filtering equipment, vacuum dehydrator etc. to obtain minimum break down voltage of 60 kV and maximum water content of 30 mg/kg as per IS 1866: 2017 and IEC 60422: 2013 complete all as specified and as directed. |
| 8 | Supplying and fixing in replacement, Porcelain Transformer bushing on LT (440 Volt) side, including brass stems conical bush and gasket after disconnecting electrically and mechanically for indoor/outdoor transformer of capacity upto500 KVA and re-connecting electrically and mechanically, testing complete all as specified and directed. Note:- The rates quoted is deemed to be included the cost of necessary labour charges for draining out & re-filling transforer oil, opening of top cover by unscrewing nut, bolts washers and provision of pad type bus bar almuminium of approppiate size /capacities of transformers with nut bolt & washers. |
| 9 | S & F in repairs HT side 36 kV/ 250 A bushing with copper stem including both porcelain parts and metal parts upto 500 KVA distribution transformer with accessories as per IS 3347 Part 5 (section 1 & 2) complete all as specified and as directed. |
| 10 | S&F in repairs Core of transformer upto 500KVA transformer made of High grade cold rolled grain orient (CRGO) annealed steel of M4 or superior, having low loss and good graing properties, conform to IS 3024 and IS 649-1983, including core lamination and providing manufacturers test report showing losses in Watt per kg, complete all as specified and directed |
| 11 | Supplying and fixing in replacement, all unserviceable gasket after disconnecting electrically and mechanically for indoor transformer 33/11 KV or 11/0.433 KV of capacity upto 500 KVA and re-connecting electrically and mechanically, testing complete all as specified and directed. Note. The rates quoted is deemed to be included the cost of necessary labour charges for draining out & re-filling transforer oil, opening of top cover by unscrewing nut, bolts washers etc. |
| 12 | Supplying and fixing in replacement, Silica Gel Breather assembly including vent pipe and Silica Gel for outdoor/indoor transformers, capacity upto 315 KVA complete all as specified and directed. |
| 13 | S & F in repairs 25 mm dia gunmetal drain valve of transformer as per existing one along with iron wheel head,screwed both ends complete all as specified and as directed. |
| 14 | M&L Lighting arresters explusion type complete with all fittings. 65 K Amp discharge capacity distribution class, suitable for 33KV complete fixed on channel / cross arm including connecting to overhead line and upto earth pit complete incl taking out unsv complete all as specified and as directed. (Set of three) |
| 15 | M&L for Lighting arresters explusion type complete with all fittings,30 KA discharge capacity, distribution class, suitable for HT 11KV complete fixed on channel / cross arm including connecting to overhead line and upto earth pit complete incl taking out unsv complete all as specified and as directed. (set of three) |
| 16 | Supply and lay in replacement of HT rubber mat of size 2 mtr x 1 mtr x 3 mm thick complete all as specified and as directed. |
| 17 | Supply and fixing in replacement Switch Air break, Gang operated with drop out fuse unit TP suitable for horizontal or vertical operation, mechanically operated mounted on 15 insulators and steel frame with operating mechanism and operating rod of 20mm bore, medium grade, GI pipe worked from ground level with locking arrangement for 400 Amps rating 11 KV working pressure including Electrical connections complete all as specified and as directed. |
| 18 | M& L for servicing of 33 kV gang operated air break switch, any type (horizontal or vertical) by cleaning the contact, greasing, applying petroleum jelly at the contact point, checking serviceability and including replacement of heavy duty brass jaw and blade set, copper strip set, lugs, nuts, bolts, washers, aluminium thimbles, jumpers, all as per the existing complete all as specified and as directed. Note: - (1) The cost for replacement of brass jaw, blade set, copper strip set, lugs, nuts, bolts, washers, aluminium thimbles, jumpers, lubricating materials, etc. shall be deemed to be included in the unit rate quoted by the contractor for the item. |
| 19 | M& L for servicing of 11 kV gang operated air break switch, any type (horizontal or vertical) by cleaning the contact, greasing, applying petroleum jelly at the contact point, checking serviceability and including replacement of male and femalle contact set, copper strip set, lugs, nuts, bolts, washers, aluminium thimbles, jumpers, all as per the existing complete all as specified and as directed. Note: - (1) The cost for replacement of brass jaw, blade set, copper strip set, lugs, nuts, bolts, washers, aluminium thimbles, jumpers, lubricating materials, etc. shall be deemed to be included in the unit rate quoted by the contractor for the item. |
| 20 | Material & Labour for painting of transformer installed on plinth on plinth structures at various site of capacity 500 KVA with existing colour, with spraying machine, after cleaning, preparation of outer surface of transformer, including writing of SM No, MES and capacity of transformer complete all as specified and directed. |
| 21 | Material & Labour for painting of transformer installed on outdoor/indoor type at various site of capacity 100 KVA with existing colour, with spraying machine, after cleaning, preparation of outer surface of transformer, including writing of SM No, MES and capacity of transformer complete all as specified and directed. Please Enable Macros to View BoQ information |
| 22 | Material & Labour for painting of transformer installed on outdoor/indoor type at various site of capacity 100 KVA with existing colour, with spraying machine, after cleaning, preparation of outer surface of transformer, including writing of SM No, MES and capacity of transformer complete all as specified and directed. Please Enable Macros to View BoQ information |
