1、MAIN APPLICATION: This AVR board is applicable to the generator and used to stabilize the output voltage of the generator. 2、COMPACT DESIGN: The AVR board is small in size and light in weight, sturdy and durable for long term use. 3、SAFE USE: The AVR board possesses under frequency protection, over excitation protection and voltage delay function, electromagnetic interference suppression. 4、IDEAL REPLACEMENT: This AVR board is an ideal replacement for the old and damaged parts for better generator performance. 5、EASY TO INSTALL: Comes with a small size and lightweight as well, you can easily complete the installation and put the board into use. 1 x Generator Voltage Regulator Item Type: Generator Voltage RegulatorMaterial: Metal, PCInductive Input Voltage: 170-520VAC 1 phase 2 wire dial switch optionalFrequency: 50, 60Hz DIP switch optionalPower Input Voltage: 100-300VAC, 1 phase, 2 linesMaximum Output Voltage: 63VDC at 220VAC inputCurrent: Continuous 5A, intermittent 7A, lasting for 10 seconds.Resistance: 15 ohms minimum, 100 ohms maximumVoltage Regulation: <± 0.5% (4% engine regulation)Accumulated Residual Voltage at AVR Terminal: Greater than 5VACOverexcitation Protection 78 ± 5VDC at 220VAC, 5 seconds.External voltage adjustment 7% with 1K ohm 1W trimmerUnit Power Consumption: 8 watts maximumSoft Start Ramp Time: 3 secondsEMI suppression internal electromagnetic interference filteringAVR thermal drift per 0.03% change in ambient temperatureUnderfrequency protection(Factory setting) The preset inflection point of 60Hz system is 55HzThe 50Hz system presets the inflection point to 45HzAmbient Working Temperature: - 40 to 70℃Storage Temperature: - 40 to 85℃Relative Humidity: 95% maximumVibration: 3G at 100-2KHzAVR Control Function VOLTS: Voltage adjustmentSTAB: Stability adjustmentU/F: Set U/F inflection point (U/F: underfrequency protection)