Low Voltage APF active power filter device works: Low active power filter APF system is a dynamic harmonic filter and dynamic reactive power compensation system of new power electronic devices. Three-phase parallel converter which consists of IGBT tubes via a series reactors in parallel in the power line, the load current collected APF control system through the current transformer, through real-time detection circuit load current harmonic component and the fundamental reactive component separated by the control system fast operation, using the latest technology to trigger PWM control of the IGBT. By the large-capacity three-phase IGBT tubes in parallel converter compensating current injected into the system, the compensation current and load current harmonic currents are equal in magnitude and opposite in direction, cancel each other to achieve a harmonic filter function, ensure that the final the current flowing into the system is a sine wave. In addition, if the user has filtering and reactive power compensation requirements synchronization is complete harmonic frequency furnace control, APF only way to change the settings, you can achieve harmonic filtering and reactive power compensation harmonic control, to improve the power factor, improve The purpose power quality. Low-voltage active power filter APF Technical Parameters: l Electrical characteristics: Rated voltage: 0.4,0.55,0.69,1KV Power frequency: 50Hz electrical wiring: three-phase three-wire or three-phase four-wire maximum harmonic current: 50A, 100A, 150A, 200A, 250A, 300A (single) Current sampling methods: the total load current transformer secondary side sampling, sampling the signal cable 2.5mm2l performance indicators: voltage fluctuation range: ± 10% harmonic range: 2 times to 50 times harmonic wave (or filtered user-specified load characteristic harmonic) filtering effect:> 90% of the operating modes: filtering, compensation, compensation filter + three selectable operating modes Response time: <10ms active: <1% of protection: voltage, over current, current limiting, temperature, IGBT and other protection l control features: Nominal switching frequency: Average 10KHZ control algorithms: frequency domain adaptive filtering capabilities vector compensation algorithm controller: double-loop track, high-speed large Capacity DSP Display: large-screen, high-definition, Chinese menu display color touch screen l Structure: Protection class: IP 20, IP30 color: a user-specified (standard color: gray microcomputer) Cooling: forced air cooling overall structure: cabinet type, can be linked together with the switchgear cabinet installation, can also be placed on-line mode Independent: Cable; up and down the line; bus connection IF furnace Harmonic | Yuanyang Harmonic | Xi Xi from Henan Connaught Connaught Electrical and Mechanical Electrical Equipment Limited. Henan Xi Connaught Electrical Equipment Co. (www.hnxinuo.com) strong, credible, in Zhengzhou, Henan electronics, electrical products processing industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Connaught Electrical and Mechanical study into the brilliant and you work for a better future!