Characteristics of Self-Healing Low-Voltage Shunt Capacitors

1. Self-Healing Function

The self-healing feature is a core advantage of this type of capacitor. When the dielectric inside the capacitor fails due to local overvoltage or breakdown, the capacitor can rapidly restore its insulation performance and continue normal operation.

2. High Reliability and Long Service Life

The design of self-healing capacitors enables them to have a long service life under normal operating conditions, typically within the range of 5 to 10 years. This is due to their ability to automatically repair minor faults, thereby significantly reducing the frequency of replacements and maintenance costs.

3. Compact Size and Lightweight

Self-healing capacitors typically use metallized film as the dielectric, which results in a smaller volume and weight compared to traditional oil-impregnated capacitors. This allows for more flexible installation and layout, making them suitable for applications with limited space.

4. Low Loss and High Efficiency

The dielectric loss of self-healing capacitors is very low, with their power loss being only a fraction of that of conventional capacitors. This helps improve the utilization efficiency of electrical energy, reduce heat generation, and minimize energy loss during operation.

5. High Overload Resistance

These capacitors can withstand relatively high voltage and current overloads, adapting to various operating environments. Their short-term overload capacity and ability to withstand inrush currents are strong, making them suitable for applications with significant voltage fluctuations in power grids.

6. Ease of Maintenance

Due to their self-healing characteristic, capacitors do not require immediate repair or replacement when encountering minor breakdowns, greatly reducing maintenance efforts. Additionally, the inherent stability and reliability of the capacitors significantly lower maintenance frequency.