What does high-potting (Hipot) mean?

• A. Hipot test is a low-voltage continuity check.
• B. Hipot test measures insulation resistance using a megohmmeter.
• C. Hipot test is used to heat cables for testing.
• D. High-potting (Hipot) refers to a high-voltage test that applies an overvoltage to the cable to test insulation.

Answer: (D)

High-potting tests verify insulation integrity by applying a voltage well above normal operating levels to the insulation. This high-voltage stress reveals weaknesses such as moisture, cracks, or pinholes by causing a measurable leakage current or breakdown if present. It’s about withstanding an overvoltage, not about checking continuity at low voltage or simply measuring insulation resistance with a megohmmeter. It also isn’t about heating the cable. So the description that matches Hipot is that it is a high-voltage test applying an overvoltage to test insulation.