Input

• Sensing input: 170–260 VAC @ 220 VAC, 340–520 VAC @ 440 VAC (single-phase, 2-wire, selectable via DIP switch)
• Power input: 100–300 VAC (single-phase, 2-wire)
• Frequency compatibility: 50/60 Hz (selectable via DIP switch)

Output

• DC excitation output: Continuous current up to 5 A DC; instantaneous peak current 7 A (≤ 10 seconds)
• Output voltage range: 0–90 VDC (dynamically adjusts with generator speed/load)
• Excitation resistance range: Min. 15 Ω, Max. 100 Ω

Regulation

• Steady-state voltage regulation: ≤ ±0.5% RMS (with 4% engine governing)
• Response time: ≤ 20 ms
• Voltage build-up: Residual voltage at power input terminal > 5 VAC

Protection

• Built-in over-excitation protection (shuts down after 5 seconds if excitation exceeds 35% of power input, function can be disabled)
• Under-voltage/over-voltage protection
• Under-frequency protection (adjustable knee points: 45 Hz for 50 Hz systems; 55 Hz for 60 Hz systems)
• Sensing loss protection (automatic output shut-off when voltage sensing is lost)
• Short-circuit current limitation
• Built-in 5A high-capacity fuse

Environment

• Protection class: IP20 (dust and moisture resistant)
• Operating temperature range: -40°C to +70°C
• Storage temperature range: -40°C to +85°C

Additional Features

• Parallel operation capability (compatible with Kutai EP200 Paralleling Module)
• External voltage adjustment: ±5% via 2 kΩ trimmer
• Soft start voltage ramping
• EMI suppression
• Digital low frequency protection circuit (prevents thermal drift)
• Compatible with self-excited brushless generators (shunt and auxiliary windings)

Physical Specifications

• Dimensions: 156 mm (L) × 106 mm (W) × 43 mm (H)
• Weight: 535 g ± 2%
• Cooling: High-efficiency aluminum heat sink, natural air cooling
• Mounting: Open chassis, resin-encapsulated, for installation in alternator terminal box
• Wiring definition: EXT.VR (external voltage adjustment), F- (excitation negative), F+ (excitation positive), A/B/C (sensing/power input)