Through Repairing, Overhauling With Replacement Of Defective Spare Parts Of 3 Nos. Ht Ocb 11 Kv And 2 Nos Oil Cooled Indoor Type Transformer 750 Kva, 11 Kv/415 V At Kamdahari Drainage Pumping Station Kmc/S D/Kmps/Tr/25-26