Repairs replacements to 63 kVA HT Transformer at LIS Wandakpora

Amount

Mechanical transportation (to and fro), loading, unloading and stacking of dismantled 63 kVA HT Al Wound Transformer by suitable means.

Rewinding of Aluminium wound 3-Ph 11/0.44kV distribution transformer by way of P/F of LT Al wound Legs (02 Nos.) and HT Al wound leg (02 No.) of proper gauge and pitch. The job shall include providing and fitting of material like silicon taping, teflon paper, cork sheet and Bakelite sheets on both HT and LT side. LT windings shall be circular and concentric with HT windings on the outside. The connections shall be connected in delta or star for primary winding and secondary winding as specified with neutral terminal. The job also includes cleaning of laminated core thoroughly using decarburising chemical spray. The core assembly shall be again aligned and fixed with existing angle iron frame inside the MS tank. The arrangement of winding shall be made robust in electrical /mechanical construction and should permit free circulation of oil to avoid hot spots. The job also includes replacement of 02 No. HT bush rods and 01 No. LT bush rod.

Complete assembling of the transformer by way of fitting of HT/LT coils in the tank. The Job further includes closing of the transformer lid by way of fitting of existing nuts/bolts and gaskets. Refilling of available T.oil upto required level in tank. Reconnecting of HT/ LT connections and testing at site.

S T ELECTRICAL ENG WORKS PEERNAR TRAL