High voltage test (HVT)

The high voltage test is used to ensure the isolation resistance of electronic components in the low voltage range (Class I and II). It proofs if the isolation of the current carrying conductor and the safety distance from the housing are in order.
In contrast to a voltage Isolation resistance test, the high voltage test checks the required isolation distances. In general, a high voltage test is performed from the shorted power circuit (phase and neutral) to the protective conductor. The test time and the test voltage are defined differently depending on the standard and class of protection and can move between 1000V 6000V AC to DC. During the test, no flashover or breakdown shall occur.