SVC-H type AC Automatic Voltage Regulator(AVR,stabilizer) PVC type AC Automatic Voltage Regulator(AVR,stabilizer)PVC-500VA, 1000VA, 1500VA, 2000VA, 3000VA ... additional waveform distortionInsulationresistance:≥2MΩ plastic face AC Voltage Regulator(AVR,stabilizer)