1、VOLTAGE AND POWER: Generator voltage regulator, input power voltage is 170‑277V, maximum power is 30W, with a wide scope of application. 2、HIGH INSULATION: The voltage regulator has good insulation, can maintain high reliability under harsh environment and high vibration level. 3、GOOD PERFORMANCE: The generator automatic voltage governor has high accuracy, wide operating temperature range, small drift and good stability. 4、EXCELLENT CAPACITOR: The voltage regulator adopts excellent capacitor, with good parameter consistency, which is convenient and practical. 5、DURABLE MATERIAL: The voltage regulator is made of excellent ABS and brass, with corrosion resistance, aging resistance and good conductivity. 1 x Voltage Regulator1 x User Manual Item Type: Voltage RegulatorModel: M40FA640AAInput Power Supply: Voltage 170-277V (50/60Hz)Maximum Field Voltage: 1000 VAVoltage Sensing: AC170-270V, 380-415V, 440-480V single phase or 3 phaseOperating Temperature: -30-70℃Power: 30W (Maximum)Maximum Continuous Field Current: 8AMaximum Forced Field Current: (1 minute) 15AField Resistance: 3.5-20ΩAdjustment Accuracy: ± 0.5%(Steady state conditions, ratings, balanced and undeformed loads, constant frequencies)Thermal Drift: ± 0.5%(Voltage change 50℃, change from TAMB after 10 minutes)Response Time: 1 cycle (20ms- 16.6ms)