What situation means that power capacitors cannot be used at all?

The actual service life of power capacitors is influenced by various factors. Due to different usage environments, capacitors output from the same batch will result in different usage environment "outcomes".

Customers often ask: if the temperature of the power capacitor is too high, can it not be used; Can capacitors continue to be used

What exactly happens to indicate that power capacitors can no longer be used? Come and take a look at today's article!

Several situations where power capacitors cannot be used at all:

1. Serious malfunction occurred

The power capacitor has slight oil leakage and slight expansion. If handled properly, it can be used for a period of time. Just strengthen monitoring to ensure that capacitors can be disconnected from the power supply in a timely manner before serious faults occur, and make a replacement plan.

If there is a serious malfunction of the capacitor, such as fire, explosion, etc., resulting in severe damage to the capacitor shell and internal medium, the power capacitor will be completely unusable.

2. Capacity attenuation

Power capacitors are mainly used for reactive power compensation and improving power factor. If the capacitor decays too quickly, it cannot play its relevant role and does not need to be continued to be used.

If the capacitor cannot achieve compensation effect after a period of use and the capacitance value decreases by more than 50%, it indicates that the service life of the capacitor has expired and cannot be continued to be used.

Reasons for the "termination" of the lifespan of power capacitors:

1. Closing surge and charged closing operation can cause a large amount of current to flow between the two poles of the power capacitor, which can easily lead to capacitor explosion and end the capacitor's lifespan.

2. Long term overvoltage operation can lead to high temperature of capacitors, damage to the medium, resulting in capacitor ignition and termination of equipment life.

3. Overvoltage or improper ventilation at the installation site may also cause capacitor failure, leading to the termination of its lifespan.