Checklist to Reduce Bushing Testing Issues

Posted by Hubbell Power Systems on Aug 8, 2017 1:14:00 PM

Electro Composites and PCORE® bushings are routinely tested in the factory and the power factor results are put on bushing nameplates. It is not uncommon to see the power factor test results in the field are slightly different from the nameplate values. This is mainly caused by the differences in the test sets and the testing environment. However, a significant difference may indicate some testing issues in the field. The users may see significantly higher or lower values of either C1 or C2 power factors than the bushing nameplate values. Below are the checklists we recommend for the users to eliminate testing issues:

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Topics: Bushings