Feature: 1. EXCITATION REGULATOR: The AVR R450 is a half wave phase controlled thyristor type automatic voltage regulator that is part of the brushless generator excitation system 2. SAFE PROTECTION: In addition to regulating the generator voltage, the AVR circuit includes underspeed and induction loss protection to ensure safe and reliable control of the generator 3. FUNCTION AND ACTION: By using a skilled semiconductor in the AVR power supply circuit, positive voltage from the residual level can be ensured 4. WORKING PRINCIPLE: The automatic voltage regulator is connected to the main stator winding and the exciter winding to provide closed loop control of the output voltage, and the load is adjusted to +/‑1.5% 5. SCRATCH RESISTANT ABS: Brushless generator AVR adopt excellent ABS material, possess impact resistance, scratch resistance, environmentally friendly Specification: Item Type: Automatic Voltage Regulator Material: ABS 0-110V terminal=95-140V 0-220V terminal=170-260V 0-380V terminal=340-528V Potentiometer P1: Voltage setting Potentiometer P2: Stability setting Potentiometer P3: Excitation Potentiometer P4: Orthogonal droop Rotation Switch Selection 1: Frequency, U F function, LAM function Rotary Switch Option 2: Alternator type and voltage sensing(phase 1 or 3) Rotary Switch Option 3: Excitation type(AREP or PMG) and time response. Package List: 1 x Automatic Voltage Regulator1 x User Manual