Digital guide
You are here:
Woodward 9905-001K
Product Overview
A compact, automatic synchronizer designed for single or multiple generator sets. It monitors the frequency and phase angle of an offline generator relative to a live bus, automatically adjusting the generator’s speed to achieve synchronization and closing the circuit breaker when parameters match, ensuring seamless paralleling.
Detailed content
Technical Specifications
- System Compatibility: Single/three-phase AC generators (50/60 Hz)
- Voltage Input: 115–230 VAC RMS (±10% tolerance)
- Frequency Range: 50–60 Hz (field-selectable)
- Synchronization Accuracy: ±0.5 Hz frequency difference, ±10° phase angle
- Speed Bias Output: 0–5 VDC analog signal (for frequency trimming)
- Power Supply: 18–32 VDC, 5 W maximum
- Operating Temperature: -40 °C to +70 °C
- Dimensions: 152 mm × 102 mm × 51 mm
- Weight: 0.91 kg
Functional Characteristics
- Fully automatic synchronization for dead-bus and live-bus paralleling
- Adjustable frequency/phase matching tolerances for different generator sizes
- Built-in LED indicators for frequency, phase, and sync status
- Isolated speed bias output for compatibility with all Woodward speed controllers
- Compact design for panel or DIN-rail mounting
- Rugged construction for industrial and marine environments
Application Scenarios
Multi-generator industrial power plants, marine vessel power distribution, commercial building emergency power systems, microgrid control, and data center backup power systems.
