What is meant by TAN-DELTA test carried out in motors?

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What is meant by TAN-DELTA test carried out in motors?..

u mean what is tan delta ???

tan delta is dissipation/loss factor of insulation
we want to know what is condition of insulation in
equipment

and u want to know more detailes mail me

malavtrivedi2002@gmail.com

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What is meant by TAN-DELTA test carried out in motors?..

Answer / ragahvendran

TAN DELTA test are also performed in Transformers like in
motors to evaluate the condition of winding Insulation and
Bushing Insulation Strength in transformers.A DC voltage is
applied across the terminals and the value of leakage
current is noted down.the leakage current can be split into
Ic and Ir.the value of Ir should be as low as possible to
ensure that the dielectric strength is satisfactory.

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What is meant by TAN-DELTA test carried out in motors?..

Answer / sanket

Is this test mandatory for 3.3kV motor. Standards specify
necessity above 5kV, but I am in doubt why the same is not
applicable for 3.3kV motor?

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