Name: Woodward 9905-002N SPM-A Synchronizer Module for Generator Voltage, Frequency & Phase Matching Control Systems
Brand: Woodward
SKU: 6316
Availability: InStock
Rating: 5.0 (1 reviews)

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The Woodward 9905-002N is a proven SPM-A Synchronizer Module, engineered for precise generator synchronization in power generation systems. It ensures that an offline generator is accurately matched with a running generator or utility bus by aligning frequency, voltage, and phase angle before breaker closure.

Widely used in conjunction with Woodward 2301 load sharing systems, this module plays a critical role in safe paralleling operations, reducing mechanical stress and preventing electrical disturbances. Its phase-locked loop (PLL) control design delivers stable, repeatable synchronization performance, making it a trusted solution in both legacy and modern generator control systems.

Technical Specifications

Specification	Details
Model	9905-002N
Module Type	SPM-A Synchronizer Module
Function	Generator synchronization (voltage, frequency, phase matching)
Control Method	Phase-Locked Loop (PLL) synchronizer
Input Voltage	115 / 230 VAC (±10%)
Frequency Range	50 / 60 Hz
Phase Matching Window	±10°
Voltage Matching Accuracy	±1%
Power Consumption	Approx. 10 W
Output Signals	Speed bias output, breaker close relay signal
Impedance Options	High / Low impedance outputs for governor systems
Operating Temperature	–20 °C to +70 °C
Mounting	Panel-mounted
Dimensions (L × W × H)	208 × 46 × 5 mm (approx.)
Weight	1.7 kg
Status	Discontinued; widely available as surplus/refurbished

Recommended Related Models

Woodward 9905-002 – Standard SPM-A synchronizer module
Woodward 9905-007 – Alternative synchronizer configuration
Woodward 8271-467 – Load sharing & speed control module
Woodward 2301 Series Controllers – Governor and load sharing systems
Woodward 8200-205 – Overspeed protection controller

Popular Woodward Control Platforms

SPM-A Synchronizer Series
2301 Load Sharing & Speed Control Systems
EGCP Generator Control Platforms
ProTech Overspeed Protection Systems

Applications

The Woodward 9905-002N is widely used in:

Generator synchronization and paralleling systems
Industrial and utility power plants
Marine generator control systems
Oil & gas power generation units
Backup and standby generator systems
Microgrid and distributed energy systems

Its role is critical in ensuring smooth generator connection without voltage spikes or phase mismatch, protecting both equipment and grid stability.

Key Advantages

Accurate Synchronization Control – Matches voltage, frequency, and phase with high precision
Reliable PLL Technology – Ensures stable and repeatable synchronization performance
Flexible Output Options – Compatible with multiple Woodward governor systems
Compact Design – Easy panel integration in control cabinets
Reduced Mechanical Stress – Prevents damage during generator paralleling
Proven Industry Reliability – Widely deployed in legacy and ongoing installations

Technical FAQs

1. What is the main function of the 9905-002N?
It synchronizes a generator with another generator or grid before breaker closure.

2. What parameters does it match?
Voltage, frequency, and phase angle.

3. What control method does it use?
A phase-locked loop (PLL) for precise synchronization.

4. What is the input voltage?
Typically 115 VAC or 230 VAC.

5. What is the phase matching tolerance?
Approximately ±10 degrees.

6. What are the dimensions?
Approximately 208 × 46 × 5 mm.

7. What is the weight?
About 1.7 kg.

8. Is it still manufactured?
No, it is discontinued but widely available in the aftermarket.

9. What systems is it compatible with?
Woodward 2301, 2301A, EPG, and similar governor/load sharing systems.

10. Why is synchronization important?
It prevents electrical faults and mechanical stress during generator connection, ensuring safe and stable operation.

Look forward to your comments!Comment