Active power filter input voltage range rated voltage of 380V, can withstand -40% to + 20% voltage fluctuation, frequency of 50 / 60Hz, can withstand +/- 5% fluctuation frequency harmonic control, adapt different conditions of power quality environment. Meanwhile, if the voltage fluctuation exceeds the upper limit harmonic control, the machine automatically latching output, and an alarm. Automatic current limiting automatic limited within the range of the rated output capacity of 100%, if the load side harmonic currents greater than the rated capacity of the machine harmonic control technology, the machine will continue to output harmonic current compensation within the rated capacity, will not lead to overload themselves overloaded or out of operation. Load short-circuit protection can withstand the impact of short-circuit load instantly, eliminate restarted after a short circuit. BDKJ-FC type II compensation device Features 1, means long-term operation at 1.1 times the rated voltage of the steady-state over-voltage: 2, the device can rms value of not more than 1.3 times the capacitor rated current of over current in continuous operation in square; 3 The apparatus uses no breakdown of heavy high voltage circuit breaker and equipped with zinc oxide surge arresters to limit capacitor switching overvoltage generated during operation; harmonic governance case study Connaught Electrical and Mechanical (certified), harmonic control from Henan Xi Connaught Electrical and Mechanical Equipment Co., Ltd.. Henan Xi Connaught Electrical Equipment Co. (www.hnxinuo.com) is Zhengzhou, electronics, electrical products processing leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In practice Connaught Electrical and Mechanical leadership with the staff warmly welcome all inquiries negotiations to create learning Connaught Electrical and Mechanical better future.