1、Principle of Operation: The automatic generator voltage regulator stabilizes the brushless generator to output voltage by adjusting the generator excitation current. 2、Starting Voltage: The automatic generator voltage regulator is a sealed electronic device with ultra low starting voltage and rapid response. 3、Small Temperature Drift: The brushless generator automatic voltage regulator uses industrial grade highly stable components in the key loop, with small temperature drift. Suitable for 220 440VAC brushless generators (programmable input). 4、Safe and Reliable: Brushless generator auto voltage regulator is designed with multiple independent protection circuits, safe and reliable. 5、Suppression Circuit: Brushless generator automatic voltage regulator low frequency protection and voltage slow build up function, EMI suppression circuit. 1 x Engine Excitation Regulator Board1 x Instruction Manual Item Type: Generator Automatic Voltage RegulatorMaterial: ABSSensor Input Voltage: 220 400VAC 1 Phase 2 WirePower Input Voltage: 180 To 240VAC 1 Phase 2 WireOutput Voltage: Maximum 90VDC At 240VDC InputContinuous Current: 6AIntermittent Current: 12A (10SEE)Generator Magnetic Field Resistance: Minimum 10Ω, Maximum 100ΩSuitable For 220 440VAC Brushless Generators (Programmable Input)