Feature: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.Specification: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 70Storage Temperature: - 40 to 85Relative Humidity: 95% maximumVibration: 3G at 100-2KHzAVR Control Function VOLTS: Voltage adjustmentSTAB: Stability adjustmentU/F: Set U/F inflection point (U/F: underfrequency protection).Package List:1 xGenerator Voltage RegulatorNote:1. Light reflection and different displays may cause the color of the items in the picture to be slightly different from the real object.2. Please allow 1 to 2in error due to manual measurement. Thanks for your understanding.