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Technique

3rd 2021-July

AC and DC withstand voltage test

In the preventive test of power system, although a series of non-destructive tests have been carried out on power equipment, many insulation defects can be found. However, due to its low test voltage, it is often unable to detect some defec...
3rd 2021-July

General concept of dielectric loss

A dielectric is an insulating material. When studying the physical phenomenon of insulating material under the action of power plant, the insulating material is called dielectric; From the point of view of the use of materials, insulating m...
3rd 2021-July

Characteristic and principle of measuring leakage current

1, measure the characteristics of leakage current 1) The test voltage is high and can be adjusted at will. 2) The leakage current can be monitored at any time by a microammeter, with high sensitivity and good measurement repeatability. 3) T...
3rd 2021-July

Factors affecting insulation resistance

1. Influence of humidity With the change of the surrounding environment, the moisture absorption degree of the insulation of power equipment also changes. When the relative humidity of the air increases, the insulation (especially the mater...
3rd 2021-July

Insulation resistance test method and main matters

I. Test method 1. Before voltage test, the power supply of the test equipment and all external connecting wires should be removed, and the test material should be short connected after grounding discharge for 1min, and the electric capacity...
3rd 2021-July

Defects detected by measuring insulation resistance

Measuring insulation resistance is one of the simplest and most commonly used test methods, usually with megohmmeter (also known as insulation resistance meter) for measurement. According to the insulation resistance of the test product mea...
3rd 2021-July

Manual of 100-50kV series resonance test device

Manual of 100-50kV series resonance test device download ...

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Technique

AC and DC withstand voltage test

General concept of dielectric loss

Characteristic and principle of measuring leakage current

Factors affecting insulation resistance

Insulation resistance test method and main matters

Defects detected by measuring insulation resistance

Manual of 100-50kV series resonance test device