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9905-001 Generator Synchronizer Woodward

9905-001 Generator Synchronizer Woodward

Product Description

The 9905-001 is an SPM-A (Speed and Phase Matching) synchronizer developed by Woodward, Inc. for automated generator paralleling operations.

The unit continuously monitors voltage, frequency, and phase angle between an...

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Availability: Low stock: 99 left

SKU: 9905-001
Vendor: Woodward
Category: Generator Synchronizer
Related Series:

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Product Description

The 9905-001 is an SPM-A (Speed and Phase Matching) synchronizer developed by Woodward, Inc. for automated generator paralleling operations.

The unit continuously monitors voltage, frequency, and phase angle between an incoming generator and the energized busbar. It then sends corrective bias signals to the engine governor and Automatic Voltage Regulator (AVR) to achieve bumpless breaker closure, preventing electrical transients and mechanical stress during synchronization.

The analog control architecture of the SPM-A series provides fast response and high reliability, making it suitable for critical power generation, marine, and emergency backup power systems.

Technical Specifications

Parameter Specification
Model 9905-001
Series SPM-A Synchronizer
Function Speed and phase matching control
Supply Voltage 115 VAC or 230 VAC (±20%, switch selectable)
System Frequency Compatibility 50 Hz / 60 Hz
Phase Matching Accuracy ±10° window
Bias Output Types High impedance / Low impedance / EPG compatible
Power Consumption 5 W typical
AVR Control Internal voltage bias circuitry
Breaker Control Synchronization confirmation pulse output
Operating Temperature –40°C to +70°C
Dimensions 273.6 × 214.1 × 59.2 mm
Weight 1.4 kg

Application

  • Automated generator paralleling systems

  • Microgrid and island-mode power systems

  • Black-start recovery control systems

  • Legacy generator set modernization

FAQ

How does it correct frequency differences?
The module sends analog correction signals to the governor to accelerate or decelerate the prime mover until frequency and phase align within the synchronization window.

Can it work with third-party governors?
Yes. High/low impedance outputs allow integration with compatible non-Woodward governor systems.

Does it require external power?
Typically, the unit is powered through PT sensing lines from the bus or generator (115 VAC or 230 VAC).