Nisha Engineering Corporation supplies Control Circuit Oil Test Set. Nisha Engineering Corporation is the manufacturers of transformer oil filtration / purification plant, single and multistage. Control Circuit Oil Test Set is ideal for speedy and accurate testing of dielectric strength of transformer and circuit breaker oils which can give continuously variable output from 0-50 KV, 0-60KV, 0-75KV, 0-100KV, or 0-120KV. Control Circuit Oil Test Set is available either in manual or motor operated. Control Circuit Oil Test Set is comprises of H. T. Transformer, control circuit & test cell with electrode & gauge and supplied in a single unit where the transformers will be cast resin type air-cooled.