Model Number: HDK-30KVA Brand Name: Vmark Key Specifications/Special Features: Input: 380V AC ±20% (AVR)Output: 380V AC ±2%Frequency: 50/60HzDelay time: 6 seconds/2 minutesApparent power: 30kVA Microprocessor controlProtection against brownouts and over-voltageShort circuit and overload protectionCold-start functionDigital meter indicates line voltage and regulated voltage LED indicators to show status of working and outputSelectable delay timeBuilt-in transformer: square transformer or servo motorSurge, spike, and lightning protection (customized optional)