tender for dga/ppm testing of various 220 kv and 132 kv power transformers installed at various substations under etd, mirzapur. - collection and transportation of transformer oil sample as per standard practice in proper & air tight steel sampling bottle from bottom of t/f and oltc tank of each t/fs installed at following sub-station under etd-mirzapur. (sample bottle will be provided by contractor on their own cost) 2 132 kv substation gurudevnagar132 kv substation jigna132 kv substation mirzapur220 kv substation mirzapur132 kv substation chhanbey132 kv substation lalganj 3 dissolved gas analysis (iec : 60567) 4 water content (ppm) (iec: 60814)