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The effect of increasing current during the operation of power capacitors

Click: Time:2022-12-27 13:43:21

In the power system, stable operation of power capacitors is very important. During the operation of power capacitors, problems such as harmonics and poor contact will cause a sudden increase in operating current. So what are the effects of sudden increase in current when power capacitors are running? The editor will introduce it in detail in the following article.

1. The capacitor is seriously heated, and the final fault is damaged

When the capacitor is running, the current suddenly increases, and a large amount of current rushes into the power capacitor, causing the capacitor to seriously heat up and abnormal temperature rise. The abnormal temperature rise of the power capacitor during operation will accelerate the aging and decomposition of the insulation medium, which will not only affect the service life of the capacitor, but also lead to the failure and damage of the power capacitor.

2. The terminal block is burned

High currents passing through power capacitors also have an impact on their terminals. Some capacitor terminal blocks have low temperature resistance levels, which may cause the terminal blocks to be burned, which will affect the operation of the power system.

3. Partial discharge

When the power capacitor in operation is affected by a large current, partial discharge and electrical breakdown faults may occur inside the capacitor, which will affect the normal use of the capacitor. When the fault is serious, it may also cause the capacitor to catch fire and explode. The sudden increase in the current of the power capacitor in operation will not only affect the service life of the capacitor, but also cause capacitor damage, terminal burning, partial discharge, electrical breakdown and other failures, and even cause fire and explosion.


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