Requirement of Loss Tangent or tan (delta) test for 11kV 3MW motor during the commissioning
Requirement of Loss Tangent or tan (delta) test for 11kV 3MW motor during the commissioning
(OP)
Good day,
We are going to commission two (2) nos. of 11kV, 3MW motors at our facilities. The motor is also having an explosion proof enclosure, IEC type Ex "d". I would like to know, whether I should insist on Loss Tangent or tan (delta) test as a commissioning test?
The initial tan (delta) test results are the very useful reference (signature) for the subsequent tan (delta)tests in case required during the life time of the motor.
Sharing your views and experience is appreciated.
Thanks in advance.
We are going to commission two (2) nos. of 11kV, 3MW motors at our facilities. The motor is also having an explosion proof enclosure, IEC type Ex "d". I would like to know, whether I should insist on Loss Tangent or tan (delta) test as a commissioning test?
The initial tan (delta) test results are the very useful reference (signature) for the subsequent tan (delta)tests in case required during the life time of the motor.
Sharing your views and experience is appreciated.
Thanks in advance.





RE: Requirement of Loss Tangent or tan (delta) test for 11kV 3MW motor during the commissioning
RE: Requirement of Loss Tangent or tan (delta) test for 11kV 3MW motor during the commissioning
Muthu
www.edison.co.in
RE: Requirement of Loss Tangent or tan (delta) test for 11kV 3MW motor during the commissioning
You might want to consider getting Rogowski coils or RF CTs fitted to the machine and the secondaries brought out to an external terminal box by the factory. Field modifications to an Ex'd' machine will run into all sorts of certification problems. The cost should be fairly trivial in the overall scheme of things.
RE: Requirement of Loss Tangent or tan (delta) test for 11kV 3MW motor during the commissioning