Electrical safety testing is a universal prerequisite for electrical and electronic equipment!
Testing to specific regional demands can be a daunting task, but today's advanced Hi-Pot testers can help simplify the task.
A Hi-Pot Tester is a safety tester that combines a AC or DC (or both) high voltage generator and a leakage current measuring device associated with a discharge system.
The output capacity of the Hi-Pot tester is usually indicated in VA which refers to the product of the maximum rated AC test voltage and the maximum rated current.
The output capacity actually depends on how much current is required to maintain the test voltage. For example, 500VA can provide 100mA at 5kV AC.
The high voltage test, also called breakdown test, dielectric strength test, or flash test, is made to stress the device under test with a high voltage AC or DC (Typically around 5kV-6kV) and check that there is no breakdown nor perforation taking place.
In other words, the basic Hi-Pot test applies a high voltage from the conductors to the chassis of the device under test.
This test is often referred to as a Dielectric Test or Voltage Withstand Test.
Its purpose is to confirm that there is adequate insulation and isolation of the non-conducting surfaces from the operating voltage to avoid a shock hazard.
Generally, withstanding voltage, insulation and grounding resistance are the test functions of the electric safety tester.
Among them, the withstanding voltage test is a compulsory test item for electrical equipment before leaving the factory.
In contrast, a Hi-Pot tester or Dielectric Withstand Tester is used for conducting electrical safety tests on electrical components and products to make certain they are in compliance with electrical safety requirements.
The Hi-Pot tester can determine the suitability of the dielectric or insulation barrier between hazardous and non-hazardous parts.
This post was prepared by studying some online guides published by the following companies:
- GW Instek
- Chroma Instruments
- VITREK
OK, see you next week ⫸
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