Three Phase Self-Healing Shunt Capacitor

In the field of low-voltage reactive power compensation, the emergence of Three Phase Self-Healing Shunt Capacitors represents a revolutionary breakthrough in power factor correction capacitor technology. The self-healing function, as the core technology of Three Phase Self-Healing Shunt Capacitors, not only ensures the long-term stable operation of the capacitors themselves, but also completely changes the maintenance mode of the low-voltage reactive power compensation system.

The essence of the self-healing process of Three Phase Self-Healing Shunt Capacitors is an energy conversion that occurs at the micrometer scale. When a weak point in the dielectric layer of the capacitor is electrically broken down due to overvoltage or the presence of impurities, this point will instantaneously form a conductive channel composed of plasma at thousands of degrees Celsius. This discharge process, which lasts only a few microseconds, is extremely short but contains tremendous energy to transform the state of matter. The metalized electrodes around the breakdown point will rapidly heat up and reach the vaporization temperature under this energy shock, undergoing a state change so rapid that it seems to directly transition from a solid state to a gaseous state.

The vaporization process of the metal electrodes of the Three Phase Self-Healing Shunt Capacitors constitutes the key link of self-healing function. The vaporized metal vapor expands violently in all directions under the action of the electric field, forming a miniature plasma whirlwind. This high-speed flowing plasma not only removes the remaining conductive substances at the breakdown point, but also thoroughly cleanses the newly formed breakdown channel. As the plasma diffuses and cools within microseconds, the original conductive channel is completely removed, and replaced by the exposed pure polypropylene dielectric surface. This process is like a precise wound dressing in the microscopic world, creating perfect conditions for insulation reconstruction.

Only after the conductive impurities at the breakdown point were removed could the insulation barrier between the two poles of the Three Phase Self-Healing Shunt Capacitors be re-established. The inherent high insulation strength of the polypropylene medium ensured that this newly formed insulated area could immediately withstand the normal working voltage. The entire self-healing process, from the occurrence of breakdown to the restoration of insulation, usually takes place within one-tenth of a second, which is so fast that it hardly affects the normal operation of the capacitor. This microscopic-level self-repairing ability enables the Three Phase Self-Healing Shunt Capacitors to withstand hundreds or even thousands of local breakdowns throughout their entire lifespan without losing their basic performances.

At the intelligent production base of Geyue Electric in Wenzhou, we strictly control every detail of the self-healing function. Our Three Phase Self-Healing Shunt Capacitors adopt the ultra-fine zinc-aluminum composite coating technology, ensuring that the metallized electrodes have excellent conductivity while maintaining precise vaporization characteristics. In addition, the tension system of our fully automatic winding machines effectively guarantees that the dielectric film maintains a constant tightness during the winding process, reducing the occurrence of weak points from the source. Every capacitor produced by our factory is subjected to a 72-hour aging test before leaving the factory. This test simulates the electrical stress shocks that the capacitor will encounter during actual operation, safeguarding the stability and reliability of its self-repair function.