MAINT AND REPAIRS TO POWER TRANSFORMERS AND DISTRIBUTION TRANSFORMERS OF ANY TYPE AND CAPACITY AND CONNECTED WORKS UNDER GE (AF) BIDAR

M&L for repair/maint/renewal of Dry transformer doors/enclosers of denting/damage portion duly welding/brazing doors,shutters,channels, to avoid all type of insects entry and provide hinges to opening and arrange locking system to close/open and renewal the spares like supporting insulators, studs, clamps and nut bolt and washers complete all as specified and as directed.

Disconnecting cables from the transformer of capacity 750 KVA to 1000 KVA of Resin/Dry open ventilated of voltage grade 11/.433 KV copper wound from the HT/LT side for servicing and insulating weaken winding using good quality varnish, tightning the terminals and cleaning the juction points with using suitable cleaning solutions and checking,calibration electrically/mechanically of the tansformer and configure the auto system without disturbing exising auto connectivity and reassembly the equipment by taking reference OEM drawings fixing/connect the same in all respects complete all as specified and as directed. Note:- 1. Minor spares like nut,bolt,lugs,terminal blocks, int wiring.fuse wires for repair/maint of the transformer is deemed to include in quoted rates 2. Major spares shall be measured and paid separately.

All as per item No 2 above here in before but transformer capacity 200 KVA to 315 KVA, 3 phase 11/433 Volt of oil cooled with taking reference to OEM drawings complete all as specified and as directed. Note for Item No 1 to 3 :- 1. All the misc items not covered under the scope of work but required for minor spares are include for satisfactory completion of job upto serviceable condition of the transformer deemed to be included in the unit rate.

M&L for disconnecting the oil cooled Power transformer of capacity 2.5 MVA from the HT electrical system, taking out and shifting the same for repair to work shop by taking care of all safety measures, drain out old transformer oil, opening the top cover,primary & secondary chamber covers of the transformer with conservator and taking out core with limbs and primary & secondary windings after disconnecting and removing iron core, removing damaged primary & secondary windings etc as per requirement and rewinding, re-insulating and removal of moisture on oven heating & re-assembling transformer winding and core heating including insulating and packing material in order to take out all moisture from the transformer assembly complete, lowering the core assembly with winding in transformer body, connection work and re-assembling in position top cover, conservator, breather with relay control wiring complete including transportation of transformer back from workshop to site, installation of transformer on foundation, commissioning and testing complete all as specified and as directed by Engr-in-charge. Note:- 1. Copper winding wire for rewinding will be measured in Kgs and paid sepertely under relevant of items of this schedule. 2. Draining of transformer oil, filtering & dehydrating of oil and filling back if found usable in to the transformer shell and gasket and Misc items if any are deemed to be inclusive in the unit rate. 3. Transportation,loading,unloading for both side (MRS to work shop & return to same site) and remove/refix in the same position deemed to include in quoted rates.

M&L for disconnecting the oil cooled distribution transformer of capacity upto 315 KVA from the electrical system, taking out and shifting the same for repair to work shop, drain out old transformer oil, opening the top cover of the transformer with conservator and taking out core with limbs and primary & secondary windings after disconnecting and removing iron core, removing damaged primary & secondary windings etc as per requirement and rewinding, re insulating and removal of moisture on oven heating & re-assembling transformer winding and core heating including insulating and packing material in order to take out all moisture from the transformer assembly complete, lowering the core assembly with winding in transformer body, connection work and re-assembling in position top cover, conservator, breather with relay control wiring complete including transportation of transformer back from workshop to site, installation of transformer on foundation, commissioning and testing complete all as specified and as directed by Engr-in-charge. Note:- 1. Copper winding wire for rewinding will be measured in Kgs and paid sepertely under relevant of items of this schedule. 2. Draining of transformer oil, filtering & dehydrating of oil and filling back if found usable in to the transformer shell and gasket and Misc items if any are deemed to be inclusive in the unit rate.

All as per Item No 5 here-in-above but of capacity from 400 KVA to 1000 KVA complete all as specified and as directed.

M&L for copper winding, paper insulated wire complete as per existing guage for existing number of turns for HV/LV coil/leg rewinding of transformer capacity upto 315 KVA complete all as specified and as directed.

M&L for topping up and replacement of old transformer oil with new transformer oil in the existing transformer 11/0.433 for topup or achieve the required level after centrifuging by the centrifuging machine complete all as specified and as directed. Make :- Power Oil/ Transol/ GET

M&L for filteration, centrifuging and testing of transformer oil by using centrifuging/ filteration machine for installed transformer, 11/0.133 KV at various sub station in order to achieve the desired dielectric strength of transformer oil as per relevent IS-1981 complete all as specified and as directed.

M&L for disconecting the transformer connections and taking down from its foundation , transporting to work shop/MES store yard or site , drain out the oil from chamber complete ,opening of transformer and lifting the core and winding, clean the tank and core ,varnishing the windings for improve insulation resistance value and reassembled the same duly refilling transformer oil and reconection the same on existing location or other location of capacity of transformer upto 315 KVA complete all as specified and as directed.