what is the significance of tan delta testing?explain the
theory?
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Answer Posted / veena nair
tan delta testing is usally carried out to check the
healthiness of insulation.so this testing is usally carried
out in cb ,ct, bushings etc ,for all these equipements one
standard value will be there,for breakers this value will
be 0.00073, if any devation in this value we have to
suspect about it insulation healthyness.
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