Fundamentals of Electrical Safety Testing
Electrical safety testing and certification is a requirement for virtually every electronic device and electrical apparatus. The details of what constitutes a certified product is dependent upon a daunting number (hundreds) of safety standards and the region of the world where the device will be sold and used. Standards setting organizations include:
- EN/IEC (European)
- UL (US)
- JEIDA/MITI (Japan)
- CCC (China)
- CSA (Canada)
Electrical safety testers – often referred to as “hipot” testers – are an integral part of electrical and electronic equipment manufacturing. Hipot testers get their name from the high potential (high voltage) they produce to perform dielectric withstand and insulation resistance tests. In addition to these tests, many hipot testers provide accurate low-resistance measurements and low-resistance/high-current outputs to test ground resistance and ground bond integrity. Hipot testing has long been a standard procedure for assuring the electrical safety of electronic equipment.
This paper provides an overview of the tests and standards required for product safety testing and provides an operator checklist for basic safety guidelines and procedures.
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