A Withstand Voltage Test or High Potential Test (HIPOT test) is a 100% production line test to verify the quality and electrical safety characteristics of products, as required by national and international safety regulatory agencies such as JSA, CSA,VDE, BSI, UL, IEC, TUV etc. The test is performed by exposing an electrical product's input power mains to high voltage, the magnitude of which is specified by the agency for each product type, for a specified duration of time. The test also specifies that "no arc breakdown shall occur" during the application of the high voltage.