- Voltage of current source for measurement: 300~550VAC

- Frequency: 50/60Hz, single phase

- Power input voltage: 90~240VAC, single-phase

- Power output voltage: max voltage 63VDC when input 240VAC, max voltage 32VDC when input 120VAC

- Continuous current: 4A DC, max current 7A within 60s

- Voltage adjustment rate： < ±1% (the engine speed changed within 4%)

- Voltage build-up： when the residual magnetism voltage of AVR input terminal is above 5VAC

- Outside voltage adjustment rate: ±15% @ 1KΩ

- Max consumed power: 12Watt

- EMI suppression circuit, with electromagnetic interference filter inside

- Stability of temperature difference: voltage drifts 0.05% / 1℃

- Under-frequency protection: U/F knob 43~60Hz

- Excitation coil resistance: direct-current resistance 15~100Ω

- Over-excitation self-closing: when excitation voltage is over 100±5VDC, the machine automatically close after a few minutes delay, but when over 135VDC, it will close automatically at once.

- Operation temperature: -40~60℃

- Storage temperature: -40~85℃

- Relative humidity: below 95%

- Vibration: 1.5G @ 5~30Hz, 5.0G @ 30~500Hz

- Special turret:

       VOLT: regulate voltage;

       STAB: regulate stability

       Frequency: 50/60Hz

       VAR：EXT potentiometer

       Dimension: 101.0×69.0×47.3 (L×W×H)

- Weight: 171g ±2%