RETROFITTING OF 2X250KVA 11/0.433KV ONAN TRANSFORMERS BY DESIGN, MANUFACTURE, SUPPLY, ERECTION, TESTING & COMMISSIONING OF 2X500KVA 11/0.433KV ONAN TRANSFORMERS ALONGWITH SUPPLY & LAYING OF HT & LT SIDE CABLE AND CONNECTED ACCESSORIES INCLUDING DISMANTLING OF EXISTING 250KVA TRANSFORMERS AT SHIVA HES.
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