Motor insulation testing - Polarization Index and loss-tangent testing
Motor insulation testing - Polarization Index and loss-tangent testing
(OP)
Could anyone explain the difference between Polarization Index and loss-tangent testing.
Since, both testings are checking the insulation of windings. Any pros and cons?
Thanks.
Since, both testings are checking the insulation of windings. Any pros and cons?
Thanks.






RE: Motor insulation testing - Polarization Index and loss-tangent testing
For Polarization Index see:
ht
for other see
http://
May be useful.
regards
RE: Motor insulation testing - Polarization Index and loss-tangent testing
tan delta or power factor uses more expensive equipment. Operation of the equipment can be a little more complex.
For motors, typically it would not be an either/or. You are always going to do IR / PI . If you want extra analysis / assurance, you also do a tan delta.
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RE: Motor insulation testing - Polarization Index and loss-tangent testing