BAGB /BAFB Series Intelligent LV Shunt Capacitors (Hereinafter referred to as Intelligent Capacitor) are a new generation of intelligent integrated reactive power compensation equipment featuring reduced wire loss and improved power factor and power quality, suitable for automatic reactive power compensation of LV AC distribution systems of 0.4kV and below. The product changes the bulky and heavy structure mode of the traditional reactive power compensation device, and adopts new algorithm to optimize the switching capacitor according to the reactive power demand. The internal of Intelligent Capacitor contains two groups of Capacitors, which are input in turn to make the compensation more precise. The product has the advantages of small inrush current, compact size, low power consumption, simple wiring, modular structure, various capacity combinations, longer service life and high reliability, plus the communication function of host computer, which adapts to the higher requirements of modern smart grid for reactive power compensation.