What is the process of hipot in busbar, breakers, cables and trafo?

Question

Accepted Answer

Hipot testing is a process used to verify the insulation integrity of busbars, breakers, cables, and transformers.

Hipot testing involves applying a high voltage to the component being tested.
The purpose is to check for any insulation breakdown or leakage current.
For busbars and cables, the test is typically performed between the conductor and the ground.
For breakers and transformers, the test is performed between different terminals or windings.
The test voltage is usually higher than the normal operating voltage to ensure safety and reliability.
If any insulation breakdown or excessive leakage current is detected, it indicates a potential fault or weakness.
Hipot testing is an essential part of quality control and preventive maintenance in electrical systems.

Accepted Answer

Busbar, Breakers use (2e+!) AC voltage where as cables use (1.414(2e+1)) DC voltage. Apply 100% at manufracturing and 80% at installation site.

Top Irclass Systems And Solutions Senior Engineer interview questions & answers