Understanding the Applications of VLF and DC Hipots

High Voltage VLF-65E 65kV VLF TesterHipot testing is a stress test to determine the reliability of insulators and helps identify bad components. There are different high potential testing technologies available and it is important to understand the proper use of each. Using the wrong method can degrade or even cause an electrical component to fail.

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Here are some articles that explain suitable high potential test equipment for different applications:

What to Consider in DC Hipot Testing explains why certain high potential testing methods are preferred on new cables that are about to be installed. It also explains how this method is sometimes utilized in quality control of cables.

Performance Testing with DC and VLF Hipots talks about the difference of VLF and DC testing as well as the  advantages of each method.

Proper Hipot Tests for Field-Aged and New Cables explains what type of high potential test is suitable for old and new cables, and explains the impacts of contaminants in service aged cables when a direct current high potential test is performed.

Related electrical test equipment available for rent from Protec:

High Voltage VLF-65E 65kV VLF Tester

HV Diagnostics HVA28TD 28kV VLF / DC High Voltage Test Instrument

High Voltage VLF-4022CM 40kV AC VLF Hipot

This electrical test equipment is available for rent, lease, or purchase from Protec Equipment Resources. We are here to help you with your testing equipment needs.

Protec’s Calibration Lab offers accurate and affordable calibration services for all makes and models of electrical test and measurement equipment. Contact us today for a quote.

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Editor’s Note: This post was originally published on August, 2011 and has been updated freshness, accuracy and comprehensiveness.