REPAIR AND MAINT TO HT ELECTRIC SUPPLY, TRANSFORMER, SWITCH GEAR, UG CABLE AND OTHER CONNECTED ITEMS IN VARIOUS SUB STATIONS AT CAMERO AND WAC AREA UNDER GE (AF) SUBROTO PARK

M&L for finding the fault in HT/LT cables by high voltage fault finding equipment including disconnecting both ends of the faulty HT/ LT cables of any size , and isolating from panel , Excavating the cable at the fault location & pin point the fault, repairing the cable using cable jointing kits by adding extra HT cable if required at site, jointing the cables as before to the panel and testing complete all as specified and as directed. NOTE :- i) Fault Locating machine, necessary excavation and earth work, as reuired at site T&P, labour element are included in the quoted rates. (ii) HT joints / HT cable same size (if reqd) will be measured & paid under respective item of schedule. iii) The contractor shall bring the fault locating equipment at site with in 02 hours of instruction received from Engineer-in-charge and he shall ensure that the fault is rectified with in 12 hours of receipt of intimation from Engineer-in-charge failing which recovery of Rs 500 per hour shall be recovered from the contractor dues w.e.f the time immediately after the expiry of 24 hours duriation. (iii) For the purpose of payment one unit of éach job'shall comprise of detection of faults in a particular stretch of cable which are identified in that particular stretch, irrespective of number of defects/faults shall be considered as one unit.

M&L for painting of transformer after cleaning the body surface of transformer by rubbing with emery paper to remove oil stains and dust etc. including surface prepration complete with applying one coat of snthetic enameled grey paint by using spray gun machine complete and capacity of transformer are as under:-

(a) 63 KVA to 400 KVA

(b) 500 to 1000 KVA

Dehydration and filtration of the existing transformer/servo voltage stablizer oil by dehydration machine brought at site in running condition to achieve di-electric strength of 40 KV at the gap of 2.5 mm complete all as specified and directed by Engineer-in-charge.(Dehydration machine shall be provided/brought at site by the contractor) and shall also include the following provisions :- (a) Testing of transformer /servo voltage stablizer oil before & after dehydration shall be carried out as directed. (b) Contractor will maintain a register of dehydration and filtration of each and every eqpt as per format given by Engr-in-charge and submit the same to Engr-in-charge.

Supply and filling transformer oil for topping up of min BDV 50 KV or replacement in different existing transformers outdoor/indoors type of any capacity located and installed at different places and different height complete all as specified and as directed by the Engineer-In-Charge. Note: - Transformer Oil:- The entire quantity of transformer oil shall be procured in sealed contaner

Supply and fixing in replacement of dehydrating agents (Silca gel)/breather assy if required in transformers of capacity upto 1000 KVA outdoor/indoor type complete all as specified and as directed by the Engineer-In-Charge.

Disconnecting the incoming and outgoing cable and drain out of transformer oil upto cover plate level opening of nut and bolts and replacement gasket of 11 KV indoor/outdoor type transformer and replacement of new gascut of the top cover and bushing gasket, close all nut bolt of the transformer body and refilling the transformer oil complete. Testing of transformer after connection of all incoming and outgoing cables completet all as directed by Engineer-in-Charge for the following capacity transformers:-

Upto 250 KVA 11 KV/433 Volt.

400 to 500 KVA 11 KV/433 Volt