... . CE, ISO. 300KVA Automatic voltage regulator:1. 300KVA Automatic voltage regulator,2. Automatic voltage regulator,3. Output voltage: 380v+-1%,4 ... 500Vdc 20MΩPressure endurance insulation1800Vac/5Ma/1minuteCooling device Compulsive fan coolingOthersisolation transformer output, safe reliable, good anti-jammingenvironmentWorking ... H)1160mm×1910mm×1880mmInside pciture: 300kVA Automatic voltage regulator