How often should the low-voltage distribution compensation capacitor be replaced?

The specific replacement time of low-voltage power capacitors is related to three conditions:

1, the quality of capacitor is related to: if the manufacturing process of polypropylene film for power capacitor is excellent (the coating is uniform), the service life of capacitor will be longer under the same conditions;

2. Installation environment of power capacitor: harsh environmental conditions, high environmental temperature and conductive dust will reduce the service life of power capacitor;

3. Whether the selection of power capacitor is appropriate: whether the power capacitor is equipped with a reactor with a certain reactance rate, whether the quality and reactance rate of the reactor are appropriate, and whether the rated voltage of the capacitor is appropriate will affect the service life of the capacitor.

To sum up, whether to replace the capacitor should be analyzed and determined according to the above situation. As for the principle of replacing the capacitor, it is generally that the current is inconsistent during the operation of the capacitor, the capacitor leaks oil or the shell expands, and it needs to be replaced immediately.