... , 4. CE, ISO. 300KVA Automatic voltage regulator:1. 300KVA Automatic voltage regulator,2. Automatic voltage regulator,3. Output voltage: ... circuit.1.Input voltage: 265~495V,2.Input frequency: 30~70Hz ,3.Output voltage: 220V±0.5%,4. ... current, over temperature, over load, short circuit, and automatic alarmInsulation reactanceAbove 500Vdc 20MΩPressure endurance insulation1800Vac/5Ma/1minuteCooling device ...