Electrical Tests
Electrical Tests
(OP)
I would like to hear the forums comments on the difference between a High Potential Test, Overpotential Test and Dielectric Withstand Test. I have heard a lot of people use these terms inplace of one another. Are they the same? If you could supply a description of each or let me know what terms you use in a specific industry or region that would be great.






RE: Electrical Tests
1. IEEE Std 100-2000 "Dictionary.."
High-Potential Test (Power Operations) A test that consists of the application of a voltage higher than the rated voltage for a specified time for the purpose of determining the adequacy against breakdown of insulating materials and spacings under normal conditions. Note: The test is used as a proof test of new apparatus, a maintenance test on older equipment, or as one method of evaluating developmental insulation systems.
Synonym: High Pot
Overpotential Test = Overvoltage Test (Rotating Machinery) A test at voltages above the rated operating voltage.
Dielectric Withstand Voltage Tests (x-radiation limits for ac high-voltage power vacuum interrupters used in power switchgear) Tests made to determine the ability of insulating materials and spacings to withstand specified overvoltages for a specified time without flashover or puncture.
RE: Electrical Tests
It appears that the High-Potential Test and Dielectric Withstand Voltage Test are Overpotential Tests. But is the High-Potential Test and the Dielectric Withstand Voltage Test the same? Do they use the same test set or do they have different test sets? The dc High-Potential Test gives you the leakage current over time does the same apply to the Dielectric Withstand Voltage Test?
Thank you very much jbartos but I still have questions.
RE: Electrical Tests
A good resource for information on Hipot Testing can be found on the web-site of Associated Research. www.asresearch.com. You can down load an Operators Guide to Electrical Product Safety Testing which defines many of these test.
dwayned (electrical)
RE: Electrical Tests
RE: Electrical Tests