REPAIR MAINTENANACE OF HT DISTRIBUTION SYSTEM, HT CABLES, VCBs, TRANSFORMER AND CONNECTED WORK AT 4 AND 5 AREA AND SOLAR POWER PLANT AT 4 AREA UNDER GE (AF) ADM AREA AT AF STN AGRA

Taking out Transformer from its Position from any location under AF Stn Agra/4area for repair /servicing/ rewinding of capacity 63 KVA to 200 KVA , 11/ 0.433 Volts disconnecting /opening HV, LV Electrical connections, earthing connections complete all as specified and directed along with following other works :- (a) Transportation of transformer to civil workshop at Agra and back to site by making necessary arrangements of T&P (crane, recovery, vehicle, tripoid to be arranged by firm as required at site. (b) Opening of transformer top cover by extraction ,removing of serviceable - unserviceable nuts bolts and washers etc. (c) Draining out of transformer oil and keeping in safe custody for reuse (d) Lifting primary coil (HT) and secondary coil (LT) , dismantaling of transformer complete part by part carefully. (e) Refilling topping up of transformer oil after dehyderation and filteration in transformer. (f) Reassembeling the transformer complete with all existing serviceable parts, and new parts as ordered . (g) Reinstall the Transformer at site in position as directed after repair connecting HV, LV electrical connections, earthing connections and testing to entire satisfaction on load Note ;-(a) Replacement of userviceable parts like; Bush insulator, brass studs, cork gasket, breather assembly, tap changer, HT/LT bush rod ,Silica gel,,brass studs,rewinding , reinsulation of Primary and secondary coil with copper winding wire, dehyderation and filteration of transformer oil etc shall be measured and paid seperately under appropriate Item of schedule. (b) Renewal of adequate size Nut, bolts & washers of transformer top cover shall deemed to be included in uit rate quoted.

All as per item No 1 here in before but capacity from 250 KVA to 400 KVA

All as per item No 1 here in before but capacity from 500 KVA and above.

Draining out complete transformer oil from the transformer & storing the same in suitable containers ( to be arranged by contractor without any extra cost ) , opening the top cover and lifting up the core assembly carefully to check the condition of transformer windings and core, retanking the same after repairing , checking of leakage from transformer body and repairing/welding works required for making transformer body leak proof, refilling the transformer oil dully dehydrated and filtered (dehydration and filteration to be paid separately) & making all connections with HT/LT side bushings , refixing the top cover , and testing the transformer with a suitable capacity insulation tester complete all as directed for transformer capacity 315 to750 KVA.

M & L for rewinding of burnt out /defective HT coils with new super enamelled heavy duty copper winding wiresof class H of size matching to the existing one including varnishing, drying in a suitable oven and all insulating material such as cotton/glass sleeves,tapes etc and connections with bushing terminals complete all as specified & directed.

M & L for rewinding of burnt out /defective LT coils with new super enamelled heavy duty PCCS wires of size matching to the existing one including varnishing, drying in a suitable oven and all insulating material such as cotton sleeves, tapes etc and connections bushing terminals complete all as specified & directed.

M & L for reinsulation of LT coil of transformer of any capacity using proper size paper insulation material to form nomex or craft paper Copper wire and insulation material suitable for HT 11 KV transformer complete all as specified and directed. Note : Item shall be measured only where re-insulation of copper wire is required.

M & L for replacement of HT tap changer (OCTC) as per exsting, of suitable size with tapping arrangement one normal tapping including connecting up with HT coil and testing for transformer capacity 250 to 400 Kva complete all as specified & directed.

M & L for replacement of on load tap changer (OLTC) moving contacts CM-16/EN-16/EO-16 any size but for capacity 500 to 750 Kva.

M & L for replacement of defective HT porcelain bushing of suitable size for transformer upto 200 KVA including washers of good quality complete all as specified & directed.