Input

• Sensing reference input voltage: 115/230/400/440/480 VAC (single-phase, 2-wire, jumper selectable)
• Power supply input: 90–230 VAC
• Frequency compatibility: 50/60 Hz (jumper selectable)
• Minimum residual voltage for build-up: ≥ 5 VAC

Output

• Continuous excitation current: 7 A DC
• Instantaneous peak (forcing) current: 15 A DC (≤ 10 seconds)
• Excitation voltage range: Dynamically adjusts with generator speed/load, max 90 VDC

Regulation

• Steady-state voltage regulation: ≤ ±1% RMS (with standard engine governing)
• Under-frequency protection: Adjustable knee points via on-board potentiometer
• Voltage adjustment range: ±15% via on-board and external potentiometers
• Dynamic response: Soft start voltage ramping, recovery time ≤ 300 ms

Protection

• Under-frequency (U/F) roll-off protection
• Over-excitation protection
• Sensing loss protection
• Short-circuit current limitation
• Built-in fuse protection

Environment

• Operating temperature range: -40°C to +70°C
• Storage temperature range: -40°C to +85°C
• Humidity tolerance: ≤ 95% (non-condensing)
• Protection class: IP20 (dust and moisture resistant)