... constant voltage, charge with temperature compensation, automatic switch of even charge and float charge, programmable ... load)bypass Switching time0ms(adopted static switch )protectioninputvoltage,frequency ultralimit,phase wrong,phase lost outputovercurrent, short circuit, ... Production Range: UPS, three phase (10kva~800kva), single phase(300va~20kva), three phase in and single phase out(6kva~80kva), ...