Feature: 1. FOR BRUSHLESS GENERATOR: The AVR module is designed for AC brushless generator, which can automatically adjust the output voltage by controlling the excitation current. 2. MULTIPLE PROTECTIONS: With built in over voltage and low speed protection functions, the automatic voltage regulator is more reliable to use. 3. RANGE ADJUSTABLE: The voltage range of the voltage regulator is 230V 400V AC adjustable, and the low frequency protection is 50HZ 60HZ optional. 4. RELIABLE MATERIALS: Adopt excellent ABS board and electric components, the voltage regulator module has lasting durability. 5. HIGH STABILITY: With fine workmanship, the automatic voltage regulator has high stability, easy to control and use. Specification: Item Type: Automatic Voltage Regulator Material: ABS Model: KF308A2 Power Input: Fundamental harmonic PMG, maximum 240V Maximum Excitation Voltage Output: 200V 12ADC 10s Detection Voltage Input: 230 400VAC Low Frequency Protection: 50 60Hz optional Generator Field Resistance: ≥5Ω Steady State Voltage Regulation Rate: ≤±0.5% Voltage Regulation Range: ≥15% Minimum Residual Excitation Voltage: ≥5V 30Hz S1 S2: CT: 0-1A AC R1 R2: Voltage fine adjustment ±12% when external potentiometer 1KΩ 1W A1 A2: ±0-10% change of voltage when external voltage is ±0-1VDC Working Ambient Temperature: -40℃ to 65℃ Feature: KF308A2 automatic voltage regulator (AVR) is a close pair electronic device specially designed for supporting AC brushless generator. The AV ruler controls the excitation current of the alternator exciter to realize automatic adjustment of the generator output voltage. Package List: 1 x Automatic Voltage Regulator