... :0.5KVA,1KVA,1.5KVA 1. SummarySVC-D Series AC automatic voltage regulator is the latest product studied and produced by ... , over load invert-delay, lack voltage, over load, over temperature, machine malfunction and so on. They have digital display, blue-screen ... and it can show the working status of the machine. When the machine works abnormally, on the panel there is corresponding due ...