The difference between voltage breakdown and electrical strength

The difference between voltage breakdown and electrical strength

The breakdown voltage is equal to the electrical strength of the sample compared to the thickness of the upper breakdown sample.

The electric strength test is also called the withstand voltage test. To put it simply, any electrical equipment has an insulation strength, and the insulation strength of different rated voltages is different. When a certain voltage level is exceeded, the insulation of the device will be broken down. The electrical strength test is to add a certain high voltage to the device under test (refer to the IEC standard or national standard) to see if it will cause breakdown. If it does not break down, pass, and breakdown means failure.

This test is usually done before the equipment leaves the factory, and it may be just shaking the insulation on site. In addition, the test is a destructive test that cannot be repaired once it is broken down.

fulfill the standard:

GB/T 1408-2006 Test method for electrical strength of insulating materials

GB/T 12656 capacitor paper power frequency voltage breakdown test method

ASTM D149 Test method for dielectric breakdown voltage and dielectric strength of solid electrical insulating materials at industrial power supply frequencies.

GB/T1695-2005 vulcanized rubber power frequency voltage breakdown strength and withstand voltage strength test

GB/T3333 cable paper power frequency voltage breakdown test method

HG/T 3330 Insulating Paint Film Breaking Strength Measurement Method

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