How often should the low-voltage reactive power compensation capacitors be replaced?

The replacement cycle of low-voltage reactive power compensation capacitors is influenced by various factors, typically ranging from 5 to 10 years. However, the specific time needs to be determined based on the actual situation. The following are the main factors affecting the replacement cycle and the precautions to be taken

1. Factors affecting the replacement cycle

Working environment: Temperature: High temperature conditions will accelerate the aging of capacitors and shorten their lifespan; Humidity: A humid environment may lead to a decline in insulation performance; Harmonics: An environment with high harmonic content will exacerbate the loss of capacitors.

Load condition: In cases where the load fluctuates greatly or where the capacitor is frequently switched on and off, the capacitor will lose its charge more rapidly.

Quality and Brand: High-quality capacitors have a longer lifespan, while inferior products may fail prematurely.

Operating time: Capacitors that operate continuously for a long period of time age more rapidly.

Jinneng electric self-healing low-voltage parallel capacitor is an industrial equipment used to improve the power factor of AC power systems with a nominal voltage of 1kV or less and a frequency of 50Hz/60Hz. Our product has the self-healing characteristic of the metallized plates to achieve microsecond-level insulation recovery when the dielectric is broken down. It is suitable for reactive power compensation, harmonic filtering, and improvement of power quality.

2. Signs indicating the need for replacement

Capacity reduction: The capacitor capacity should be replaced when it is below 80% of the rated value.

Abnormal appearance: such as bulges, leakage, deformed casing, etc.

Excessive temperature rise: The temperature rises abnormally during operation.

Protection device action: Frequent tripping or activation of the protection device.

Measurement parameter anomaly: Through detection, it was found that the insulation resistance has decreased or the loss has increased.

3. Measures for extending lifespan

Improve the environment: Avoid high temperatures, high humidity and strong harmonic environments.

Optimal configuration: Select appropriate capacitors and compensation schemes based on the load characteristics.

Installation of reactors: In cases with significant harmonics, harmonic filter reactors are installed to protect the capacitors.