Hybrid Analog/Digital Single Phase/Three Phase sensing 8 Amp AVR for self-excited (shunt), Auxiliary and PMG brushless generators

ADVR-083 is equipped with Quadrature Droop Input for parallel operation, Over Excitation Protection, Soft Start Voltage Ramping Function, Digital circuits for Voltage Sensing and Under Frequency Protection effectively eliminate thermal drift.

150.0 (L) x 135.0 (W) x 61.0 (H) mm

750 g +/- 2%




Voltage Sensing Input and Power Input can be single-phase or 3-phase

Digital voltage sensing circuit and Under Frequency Protection circuit improve thermal drift characteristics

Over Excitation Protection // Under Frequency Protection // Soft Start voltage ramping

Can be used with generators operating parallel

Built-in high capacity protection fuse

Built-in EMI suppression

Can be used together with KUTAI Auxiliary Excitation Booster to increase motor starting capability of self-excited (shunt) generators


Sensing Input (Average Reading)
Voltage 90 to 520 Vac 1 phase / 3 phase DIP switch setting
Frequency 50 / 60 Hz DIP switch setting

Power Input
Voltage 60 to 300 Vac 1 phase / 3 phase
Frequency 40 to 500 Hz

Excitation Output
Continuous 125 Vdc 8A @ power input 220 Vac 1 phase
Max. 180 Vdc 10A for 10 seconds

Min. 15 ohms Max. 100 ohms @ 220V

Fuse Spec
Slow blow 5 x 20 mm 10A

External Volts Adjustment
Max. +/-10% @ 1 kΩ 1 watt potentiometer

Quadrature Droop Input
CT N:5A or N:1A
Burden > 5 VA

Analogue Voltage Input
Input resistance greater than 2 kΩ
Range +/-5 Vdc or + 0 to 10 Vdc

Build Up Voltage
5 Vac 25 Hz residual volts at power input terminal

Soft Start Ramp Time
4 seconds +/-10%

Volts Regulation
Less than +/-0.5% (with 4% engine governing)

Typical System Response
Less than 20 milliseconds

Built-in Harmonic suppression

Static Power Dissipation
Max. 6 watts

Under Frequency Protection (Factory Presets)
50 Hz system presets knee point at 45 Hz
60 Hz system presets knee point at 55 Hz

Over Excitation Protection
25 to 105% of input power (adjustable)

Voltage Thermal Drift
Less than 3% from -40 to +70 °C

Under-Frequency Knee Point Thermal Drift
Less than +/-0.1 Hz from -40 to +70 °C