REPAIR MAINTENANCE OF HT CABLE, TRANSFORMER AND ALIED WPORKS AT KATIHAR MIL SN UNDER AGE (I) KATIHAR

M&L for carrying out the repairs to transformer,step down,11/0.433 kV , 315 to 400KVA at existing position on platform after disconnection of HT/LT connections & earthing lead , opening of transformer cover plate, taking down of transformer oil to a level as required and kept in clean and dry container for re use at same time , repairing/overhauling to the defective parts/components including replacement of unserviceable parts as directed, making connection of the transformer after repair , topping of the tankwith the same transformer oil,dehydrated old oil with new oil as required/directed and testing the transformer all as specified and directed.NOTE The quoted rate shall be deemed to include for all repairs/replacements, other elements etc to make the transformer fully functional and serviceable to the entire satisfaction of Engr in charge. However the payment for the items as included required ordered and executed shall be paid seperately. Make of Transformer - Volt Amp

Vaccume dehydration with hot filteration plant of old transformer oil at different locations ,after filteration dielectric strength shall not be less than 55kV in 2.5mm gap electrode,complete all as specified and directed. The contractor shall submit necessary test report for dielectric strength before dehydration as well as after dehydration from CPRI/Govt Approved lab as per relevant IS. The contractor's quoted rate shall also be deemed to include for this element. Note- transformer oil after dehydration shall be measured and considered for the payment under the above item.

Supply only new transformer oil in non-returnable containers including testing of parameters from Govt authorised laboratory as per IS: 335:1993 of any capacity at different locations,complete all as specified and as directed. Note- The dielectric strength of transformer oil shall not be less than 55kV in 2.5mm gap electrode.

Supply only 6mm thick synthetic bonded cork gasket sheet for top cover and primary/secondary bushes for 315 KVA Capacity of transformers complete all as specified and directed

Supply only procelain transformer bushing with bushing rod (studs) made out of brass/ gun metal with threading and of suitable length /size as per existing including metal rings, bolts, washers, rubber rings, etc for HT primary side of existing 11/0.433 kV step down transformer of capacity 315/400 KVA complete all as specified and as directed. Make-PACTIL/JAIPURIA/ABI Make-

Supply only procelain transformer bushing with bushing rod (studs) made out of brass/ gun metal with threading and of suitable length /size as per existing including metal rings, bolts, washers, rubber rings, etc for LT secondary side of existing 11/0.433 kV step down transformer of capacity 315/400 KVA complete all as specified and as directed.Make-PACTIL/JAIPURIA/ABI

Supply only in replacement of Oil temperature indicator with two mounting switch,3 meter capillary length, ranging from 0 to 150 degree C,alarm and trip mechanism suitable for existing 11/0.433 kV step down transformer of capacity 315 KVA and 400 KVA complete all as specified and as directed.

S&F Lightning arresters expulsion type complete with all fittings, transmission class, discharge capacity 65 kilo amp of 11kv.

Supplying and laying synthetic Rubber insulated mats 2 mm thick for voltage upto 3.3 kv for electrical purpose as per IS 15652-2006, (superseding IS 5424) suitable for electrical shock safety of sizes 2m x 1m

Supplying and laying synthetic Rubber insulated mats 2.5 mm thick for voltage upto 11 kv for electrical purpose as per IS 15652-2006, (superseding IS 5424) suitable for electrical shock safety of sizes 2m x 1m