Woodward 9905-002 SPM-A Synchronizer

Product Introduction

The Woodward 9905-002 SPM-A Synchronizer is a compact, high-performance automatic synchronizer designed to bring generator sets or other AC sources into phase, frequency, and voltage alignment with a power bus. This synchronizer is part of Woodward’s trusted line of SPM-A series devices, engineered specifically for precision, reliability, and ease of integration into existing power systems.

Ideal for manual and semi-automatic control systems, the 9905-002 provides real-time monitoring and control of voltage, phase, and frequency to ensure that generators synchronize smoothly with utility lines or other generators. It uses fast-response solid-state electronics to manage the closing of breaker contacts at the precise moment when parameters are within acceptable limits.

Built for industrial-grade environments, the SPM-A synchronizer is a long-standing solution for mission-critical power operations in sectors such as power generation, oil & gas, and marine systems.

Technical Specifications

Applications

• Power Plants: Used to synchronize standby or auxiliary generators to the main power bus for seamless load transfer.

• Marine Power Systems: Enables generator synchronization onboard ships for stable and uninterrupted power supply.

• Oil & Gas Facilities: Synchronizes turbine-driven generators in drilling or refining operations.

• Industrial Backup Systems: Ensures backup generator sets can sync and take over load from failing utilities.

• Microgrid Systems: Integrates distributed energy resources like solar or wind with grid-tied or off-grid operations.

• Military and Aerospace Facilities: Used in mission-critical base operations for ensuring generator load sharing and transition.

Advantages

• Fast and Precise Synchronization: Rapid response to changing conditions with high accuracy in phase, frequency, and voltage.

• Durable Industrial Design: Engineered for harsh conditions with a wide operating temperature range and rugged metal housing.

• Wide Input Range: Compatible with various generator configurations and voltage standards.

• Integrated Sync Check Relay: Adds another layer of safety to avoid out-of-sync breaker closures.

• Flexible Control Options: Provides output pulses that can interface directly with speed governors or electronic control units.

• Field-Proven Performance: Trusted in thousands of installations worldwide for critical synchronization tasks.

• Panel-Mount Simplicity: Easy to install in control cabinets and generator panels without excessive customization.

• Minimal Maintenance: Solid-state construction with minimal moving parts ensures long service life.

• Compatible with Legacy Systems: Can be integrated into both new and existing generator control systems.

• Comprehensive Monitoring: LED indicators and signal feedback allow operators to view sync status in real time.

Frequently Asked Questions (FAQ)

1. Q: What is the main function of the 9905-002 SPM-A synchronizer?
   A: It automatically synchronizes generator output to match the voltage, frequency, and phase of the power bus before breaker closure.

2. Q: Can it be used in marine generator applications?
   A: Yes, it’s widely used in marine environments for synchronizing shipboard generator sets.

3. Q: What kind of output signals does it provide?
   A: The unit provides pulse signals for speed control and a dry contact relay for breaker closure.

4. Q: Is the 9905-002 compatible with Woodward governors?
   A: Yes, it interfaces easily with most Woodward electronic and mechanical speed governors.

5. Q: What voltage levels does the synchronizer accept?
   A: It accepts 90–150 VAC input voltage, either single-phase or 3-phase.

6. Q: Does this unit include a sync-check function?
   A: Yes, it has a built-in sync check relay that ensures safe and accurate breaker operation.

7. Q: How accurate is the phase matching capability?
   A: The synchronizer achieves phase matching accuracy within ±5 electrical degrees.

8. Q: What are the environmental ratings for this device?
   A: It operates between –40 °C and +70 °C, with 95% humidity tolerance.

9. Q: Is the unit suitable for remote operation or automation systems?
   A: Yes, the pulse outputs can be integrated into automated generator management systems.

10. Q: What is the typical weight and size of the 9905-002?
    A: It measures 150 x 120 x 50 mm and weighs 0.75 kg.

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