High voltage cables are typically insulated with special water-resistant polymers that have high-dielectricstrength.
通常高压电缆使用的是特殊的防水高分子聚合材料,具有很高的绝缘强度。
2
A dielectric Withstand tester (also called hipot tester, dielectricstrength tester, flash tester, high voltage tester) is then used to measure this current.