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What is VLF hipot testing?
Release Time : 2020-11-11 View Count : 次The Basics of VLF Testing is Cable Testing and Diagnostics.
Very low frequency (VLF) withstand testing is the application of an AC sinusoidal waveform, generally at 0.01 – 0.1 Hz, to assess the quality of electrical insulation in high capacitive loads, such as cables. During the test cables are subjected to a test voltage significantly higher than what they experience during normal operating conditions. The higher test voltage allows for weak points or pre-damaged areas within the cable to breakdown during the test, rather than while they are in service. Essentially, the VLF withstand test is a “go or no-go” test, otherwise known as a “pass/fail” test.
