Medium-Voltage Cables, Part 5

Medium-Voltage Cables, Part 5

The AC hi-pot test method is good for identifying high-impedance and conductive defects in cables.

Testing medium-voltage (MV) cables with the high-potential (hi-pot) test is typically part of a MV cable testing program. In Part 4, we looked at the advantages and disadvantages of the DC version of this test. What about the AC version?

As the name implies, the AC hi-pot uses an alternating current (AC) source. It’s good for identifying high-impedance and conductive defects in cables. It’s generally a go/no-go test and is commonly used to simulate steady-state AC servic

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