Automatic Three-Phase Capacitance and Inductance Tester Purpose 

    The ME-500LS Automatic Three-Phase Capacitance and Inductance Tester uses an internal digital synthesis of a three-phase AC test source, allowing direct measurement of single-phase capacitance of parallel capacitor banks or three-phase capacitors in various combined connection types without disconnecting wires. It can also measure the inductance of various reactors. With simple wiring and convenient testing and recording, it greatly improves work efficiency. It features a large-screen color LCD as the display window, menu operation with Chinese prompts, and a multi-parameter display interface on one screen, offering a friendly human-machine interaction interface that is easy and quick to use, making it the preferred product for power users at all levels.

    Power quality issues are mainly caused by the terminal load side. Among them, impact reactive loads can cause severe voltage fluctuations in the power grid, reduce power supply quality, and result in low power factor operation of the grid. With the development of power electronics technology, while it brings positive aspects such as energy saving and energy conversion to modern industry, the widespread application of power electronic devices in various industries has also brought new and more serious damage to power quality, becoming a major source of harmonic pollution in the power grid. Power departments are paying increasing attention to power quality issues, and a large number of reactive power compensation devices have been put into distribution network operation. Among these, power capacitors are important equipment for the stable operation of the power system. Reactive power compensation devices should meet the requirements of automatic tracking and real-time compensation, which inevitably requires frequent switching of compensation capacitor banks. This can cause overcurrent and overvoltage surges, and after long-term operation, may lead to insufficient capacitance or even damage to the capacitors, affecting the stable operation of the power grid. To avoid this situation, early detection of capacitor defects, ensuring reliable equipment operation, and preventing fault expansion require regular testing of capacitor banks. On-site, capacitors are typically connected in parallel in groups. The traditional method is to disconnect the capacitor busbar and then measure with a traditional capacitance meter. The workload of disconnecting wires to measure capacitance is greater, and frequent disconnection can cause screws to slip or not be tightened, leaving safety hazards and potentially causing further damage to the capacitors.