Non-destructive Inspection for Voids in Insulating Materials (2)


Partial discharge test/Q-T (charge-time) test (Partial Discharge Test)

In this test based on IEC 60664-1, the charge amount is measured with the voltage kept for a given time. This test provides a simple method for inspecting the conditions of a void in a sample.

Example of the test condition

Example of measurement: Comparison of satisfactory and defective materials by partial discharge test

In the Q-T test, while the charge amount of defective PP increased, that of satisfactory PP did not increase. It is possible to investigate any defect in the inside of a material on a non-destructive basis.
※Please note that this test is to determine the charge amount as to one or more voids, etc. but not the charge amount as to a particular void.

Search Number 6G013

Download The Technical Note of This Exapmle.

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