Automatic Three-Phase Capacitance and Inductance Tester Purpose 

    The ME-500LS Automatic Three-Phase Capacitance and Inductance Tester internally synthesizes a three-phase AC test source, allowing direct measurement of single-phase capacitance of parallel capacitor banks or three-phase capacitors in various connection configurations 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. Featuring a large-screen color LCD as the display window, menu operation with Chinese prompts, and a multi-parameter display interface, it offers a user-friendly interface that is easy and quick to use, making it the preferred product for power users at all levels.

    Power quality issues are primarily caused by the terminal load side. Among them, impact reactive loads can cause severe voltage fluctuations in the power grid, reducing power supply quality and resulting in low power factor operation. 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 introduced new and more serious damage to power quality, becoming a major source of harmonic pollution in the power grid. Power departments are increasingly paying attention to power quality issues, and a large number of reactive power compensation devices have been deployed in distribution networks. 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 involves 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 inspection of capacitor banks. On-site, capacitors are typically connected in parallel groups. The traditional method is to disconnect the capacitor busbar and then measure with a conventional capacitance meter. The workload of disconnecting wires to measure capacitance is greater, and frequent disconnection can cause screw stripping or insufficient tightening, leaving safety hazards and potentially causing further damage to the capacitors.