Woodward 9905‑002 Synchronizer is a microprocessor‑based unit designed to automatically match generator frequency, voltage, and phase with the utility or another generator before closing the breaker.
Specifications:
Manufacturer: Woodward
Model: 9905‑002
Type: Digital Synchronizer
Control Function: Automatic frequency, voltage, and phase matching
Power Supply: 18–40 VDC (nominal 24/32 VDC)
Breaker Control: Provides permissive signal for safe breaker closure
Input Signals: Generator and bus voltage/frequency inputs
Output Signals: Synchronizing pulse for breaker operation
Application: Generator sets, utility tie synchronization, parallel operation
Features:
Automatic Synchronization: Matches generator to bus without operator intervention
Microprocessor Control: Ensures precise and reliable synchronization
Safety Function: Prevents breaker closure until voltage, frequency, and phase are aligned
Flexible Integration: Works with Woodward speed controls and excitation systems
Industrial Reliability: Designed for continuous operation in demanding environments
