• Nisha Engineering Corporation

Oil Test Sets

Nisha Engineering offers Oil Test Sets. These are ideal for speedy and accurate testing of dielectric strength of transformer and circuit breaker oils. Output are continuously varied from 0 to 50 KV, 0 to 60KV, 0 to 75KV, 0 to 100KV, or 0 to 120KV. The set will comprise of high temperature transformer, control circuit & test Cell with electrode & gauge and are supplied in a single unit. The transformers will be cast resin type air-cooled. The control circuits will consist of continuously variable auto-transformer for smooth variation of output voltage, automatic tripping mechanism for protection of high temperature, transformer against overload on flash over, one voltmeter connected to low temperature side and calibrated in KV and one zero start interlocking device, the set cannot be energized unless the variac (auto transformer) is at zero position and one memory device along with a push switch to enable the voltmeter to show breakdown voltage by pushing the memory switch even after high voltage circuit is tripped off. Manual and motor operated sets are available. Beside motorized auto transformer regulator for motorized set, motor operated auto transformer and its corresponding remote control switches will be provided. The speed of rotation of the systems will be such that output rate of voltage will be 2 KV. High voltage transformer ratio is 230 V / 50 KV with center tap of high voltage winding earthed. The test vessel is fitted with two brass spheres of diameter 12.7 mm, places at a distance of 2.5mm on sides of test vessel made from non absorbent insulating material.