... warranty, 4. CE, ISO. 300KVA Automatic voltage regulator:1. 300KVA Automatic voltage regulator,2. Automatic voltage regulator,3. Output voltage: 380v+-1%,4. CE, ISO9001-2000 ... , safe and credible,7.Auto-protection and alarm for output overvoltage, over current, overheat, short circuit, ... efficiencyefficiency more than 90%, be suit for wide-load, can be for the inductive, capacitive, resistive, and ...