Replacement of Indoor/Outdoor Damaged CT, PT, Isolators and LAs at 220/132/66 KV Grid station Hiranagar for buffer stock for winter preparedness

Amount

Supply part: a) Single phase 50 c/s 145 KV CT (1200-600-300/1A) 5 Core or as per site specification 31.5 KA for one second rated dynamic current 100 KA(peak) class A insulation burden20VA.

b) 145kV, 50c/s , 2000 Amp, 31.5kA for one second, Ac motor operated horizontal double break, outdoor type 3 pole Isolators without Earthing Blades.

c) 72.5 KV Surge Arrestor Single phase, 50hz, Rated Voltage 60 KV, Outdoor heavy duty, station class, gapless type with leakage current monitor (WITH SURGE COUNTER) with IP66, prospective symmetrical fault current for pressure relief test 31.5 KA RMS for 0.2s and one minute power frequency with stand voltage 185 KV RMS.Polymer type, compitable with CB duty cycle 0-0.3sec-CO-3 min-CO.

d) 145 KV Surge Arrestor Single phase, 50hz, Rated Voltage 120 KV, Outdoor heavy duty, station class, gapless type with leakage current monitor (WITH SURGE COUNTER) with IP66, prospective symmetrical fault current for pressure relief test 40 KA RMS for 0.2s in 220/132 KV sub station and one minute power frequency with stand voltage 275 KV RMS.Polymer type, compitable with CB duty cycle 0-0.3sec-CO-3 min-CO.

CIVICTRA ENGINEERING AND CONSTRUCTIONS (BID ID -2197486)