HZ-82 series anti-harmonic smart capacitor is mainly based on 0-type or Y-type low-voltage power capacitors, using the latest technological achievements such as microelectronics hardware and software technology, micro sensor technology, micro network technology and electrical manufacturing technology, the intelligent low-voltage reactive power compensation function can realize the functions of zero-crossing switching, protection, measurement, signal indication, and online, it is a major breakthrough in low voltage reactive power automatic compensation filtering technology. The product is mainly used for reactive power compensation in the case of harmonics, reliable operation, does not produce resonance, no amplification of harmonics, and to a certain extent, there is the function of absorbing and eliminating harmonics. The product with 7% reactor is used in the electrical environment with 5 or more main harmonics, the series-connected 14% reactor is used in an electrical environment where the main harmonic is 3 times.