Improving Safety and Performance with DC Dielectric Testing

DC and AC testing provide an equivalent level of breakdown detection, but the increased accuracy of DC leakage-current detection can reveal marginal insulation systems.

Dielectric withstand testing is used to evaluate wiring insulation. When testing insulation installed in mobile homes, it is important that the insulation be tested at a much greater voltage than normal to ensure that the insulation is not marginal. If voltages are set correctly, dielectric withstand testing using a DC voltage provides the same outcome as using an AC dielectric test. In addition, DC testing offers significant safety and performance improvements over AC testing.

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