1)AVR-500VA~AVR-10KVA 2)Super-thin voltage stabilizer 3) ... TSD Single-phase high accuracy full automatic AC voltage stabilizers is made of regulator,servo motor,automatic control circuit ... and time-delay,over-voltage,etc,the series of stabilizers driven,of general type,the indeel boltage stabilized ... from distortion efficiency>95% insulation resistance>2MΩ AVR RELAY TYPE AUTOMATIC VOLTAGE STABILIZER