300KVA Automatic voltage regulator: 1.IGBT/SPWM technology, 2.Well protection function, 3.18 months 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 certifications.5. Warranty: 18 months.AC50 series power is a power that change the electric supply into the required voltage ...