Gem Bids For Testing Service For On-board /commissioned Equipment/instrument Related To Plant - Electrical, Residual Lifeanalysis Test For 100 Mva 220 132 Kv Bhel Maketransformer Mfg 1981 And 100 Mva 220 132 Kv Bhel Maketransformer Mfg 1998 Having Life Mor