Features： 1、Great Parameter Consistency: The automatic voltage regulator has great parameter consistency, low drift, and uses nice capacitors, high reliability. 2、Basic Values: Our automatic voltage regulator detection input is 400VAC 3 phase, 3 wires. The excitation voltage is 20 to 100VAC and the shunt current is 8A. 3、Working Temperature: Our automatic voltage regulator has high accuracy, nice resistance and wide range of working temperature, and great stability. 4、Low Speed Protection Function: The automatic voltage regulator comes with low speed protection function, safe and practical. 5、Easy to Carry: Our automatic voltage regulator is light weight and easy to carry, allowing you to replace and maintenance in a timely manner. Specification： Item Type: Automatic Voltage Regulator Material: ABS Voltage: 220V Detection Input: 400VAC 3 phase 3 wire Excitation Voltage: 20 to 100VDC Shunt Current: 8A Voltage Regulation Accuracy: <±1%RMS (engine speed change within 4%), low speed protection function, 50Hz 60Hz regulable. Package List： 1 x Automatic Voltage Regulator