Input

• Sensing/supply voltage: 160–265 VAC / 300–550 VAC (multi-range, terminal-selectable)
• Frequency compatibility: 50/60 Hz (automatic adaptation)
• Residual voltage for build-up: ≥ 5 VAC

Output

• Excitation voltage: Max. 63 VDC (at 240 VAC input) / Max. 32 VDC (at 120 VAC input)
• Continuous excitation current: 4 A DC
• Short-time peak excitation current: 7 A DC (≤ 60 seconds)

Regulation

• Steady-state voltage regulation: ≤ ±1% RMS (with 4% engine speed variation)
• Voltage adjustment range: ±15% (via 1 kΩ external trimmer)
• Dynamic response: Soft start voltage ramping; typical recovery ≤ 20 ms

Protection

• Under-frequency (U/F) roll-off protection
• Sensing loss protection (automatic shut-down)
• Over-excitation protection (adjustable via I EXC potentiometer)
• Short-circuit current limitation

Environment

• Operating temperature range: -40°C to +70°C
• Storage temperature range: -40°C to +85°C
• Humidity tolerance: ≤ 95% (non-condensing)
• Vibration resistance: 1.5 G @ 5–30 Hz; 5.0 G @ 30–500 Hz
• Certifications: CE, RoHS

Additional Features

• Half-wave phase-controlled thyristor design
• Compatible with brushless synchronous alternators
• Status indicators: Green (Power), Red (Excitation Limiting)
• Built-in fusing (per unit marking)
• Designed for integration with EMCP4 series control systems

Physical Specifications

• Model: EM10
• Net weight: 0.77 kg ± 0.03 kg
• Mounting: Panel/Chassis mount (integrated heat sink)
• Cooling: Natural air cooling via integrated heat sink
• Wiring definition: X1/X2, Z1/Z2 (Sensing/Input); F+/F- (Excitation); CS+/CS- (Control/Sensing); Shield (Ground)