Product Overview

With continuous economic growth and the widespread use of variable frequency drives (VFDs), DC motors, and medium-frequency furnaces, significant levels of 3rd, 5th, 7th, and 11th-order harmonics are generated during operation. These harmonics severely compromise the normal functioning of electrical equipment and degrade power grid quality. The JLKPS series AC self-healing filtering capacitors manufactured by our company are designed to withstand high harmonic stress. When connected in series with our company's filtering reactors to form a filtering circuit, they effectively filter out harmonic currents, improve the power factor, and enhance power quality, thereby ensuring the stable and normal operation of equipment.

Performance Features

This filter capacitor utilizes a bolted terminal design with enlarged cross-sections and internal flat copper strip connections; the component's current density is one-third that of conventional capacitors, effectively suppressing heat generation caused by harmonics and meeting the demands of high-current, high-capacity applications. The capacitor elements employ thickened, high-quality imported metalized film, with a specialized design ensuring high voltage withstand capability and reliable contact. The unit is equipped with an American-style explosion-proof structure, a built-in overcurrent protector, and a discharge resistor; the housing is constructed from 2mm steel plate with seamless welding, offering superior safety protection. A small-diameter, multi-element structure enhances heat dissipation and lowers operating temperature rise, while processes involving prolonged high-vacuum drying, vacuum potting, and vacuum impregnation eliminate internal moisture and air, ensuring operation free from partial discharge. The components pass rigorous sampling tests—including 200In surge tests and 1,000 charge-discharge cycles—guaranteeing an extended service life. Strict quality control is implemented throughout the entire manufacturing process, with every unit undergoing factory testing. The product is easy to install, features an attractive, compact design that improves cabinet space utilization, and combines practical performance with aesthetic appeal.

Technical Parameters

Operating Conditions

①　Altitude: ≤2000m.

②　Ambient temperature category: -25/D; the capacitor should operate under well-ventilated conditions. Ambient humidity: ≤85%.

③　After disconnection from the power supply, the capacitor voltage must drop to 10% of its rated voltage before it can be put back into operation; this typically requires 180 seconds, so a controller with a time-delay switching function should be used. Controllers utilizing zero-voltage switching are exempt from this limitation.