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How often should PCORE bushings be tested?

PCORE bushings should be tested prior to being placed into the equipment. Once the bushings are installed into the equipment they should also be re-tested. After one year of service, the bushing should then be tested again. Following the first year of service the bushings should be tested at least every three to five years. The more frequent you can test, the better as it will provide more data points should there ever be a change in power factor or capacitance.

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