supply of 110 kv single phase, three winding, oil filled, outdoor type potential transformer ratings of 110 kv / v 3 / 110 v / v 3 / 110 v / 110 v / v 3 ( winding 1: burden: 200 va; class :0.2, metering purpose, winding 2: burden: 200 va; class 3p; protection purpose & winding 3: burden:200va; class :0.2, metering purpose ) , highest system voltage 145 kv, minimum total creepage distance 3400 mm confirming to is 3156 and generally conforming to tantransco specification ( enclosed ) with one terminal connector as per rdso spec no: eti / psi / p / 11030 rev c or latest . [ warranty period: 30 months after the date of delivery ] sse / ohe / cvp , sr tamil nadu 4.00 numbers sse / ohe / vpt , sr tamil nadu 4.00 numbers