Leakage current refers to the tiny current generated between the live wire and the neutral wire of an electrical appliance during normal operation, which is equivalent to the static electricity of a general electrical appliance. When testing, a leakage current tester is used to mainly test the leakage current on the surface of L-pole and N-pole polluted insulators, which refers to the current flowing through the insulator surface after the polluted surface is wetted under the operating voltage. It is the comprehensive result of voltage, climate (atmospheric pressure, temperature, humidity, etc.) and pollution, and it is a dynamic parameter.
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