Introduction
The Woodward 9905‑002N SPM‑A Synchronizer is an advanced control module engineered to manage precise synchronizing of electrical generation sets, power islands, and interconnected systems. It ensures accurate matching of voltage, frequency, and phase before paralleling generators to a grid or bus. Built for industrial power generation and utility applications, the SPM‑A delivers fast responses, reliable predictions, and robust operation under demanding conditions.
Technical Specifications
| Parameter | Specification |
|---|
| Model | 9905‑002N |
| Product Type | SPM‑A Synchronizer Module |
| Manufacturer | Woodward |
| Function | Generator synchronization and control |
| Input Voltage Range | Compatible with standard generator bus voltages |
| Frequency Range | Typical generator frequencies (45 – 65 Hz) |
| Synchronization Accuracy | High precision phase, voltage, and frequency matching |
| Communication Interfaces | Serial/Ethernet/CAN/fieldbus (system dependent) |
| Control Outputs | Digital and analog control signals for excitation & breaker control |
| Synchronizing Method | Predictive/phasing, load sharing enabled |
| Power Supply | 24 V DC or system supply (nominal) |
| Operating Temperature | −20 °C to +70 °C |
| Storage Temperature | −40 °C to +85 °C |
| Humidity | 5–95 % non‑condensing |
| Mounting | Panel or chassis mount |
| Weight | Approx. 1 kg |
Applications
The SPM‑A Synchronizer is used in installations where precise timing and coordination of generator sets is essential:
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Paralleling generators to a utility grid
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Synchronizing multiple generators in microgrid systems
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Load sharing and power balancing across distributed generation assets
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Utility power stations and standby power systems
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Marine and offshore power generation applications
By managing voltage and phase alignment before breaker closure, the SPM‑A helps protect equipment and improves overall system stability.
Advantages
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Precise Synchronization: Achieves accurate phase, frequency, and voltage matching for safe paralleling.
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Predictive Control: Anticipates target waveform alignment to reduce synchronization delays.
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Flexible Communication: Interfaces with serial, fieldbus, and Ethernet networks for integration into broader control systems.
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Robust Operation: Designed for industrial voltage environments and wide temperature ranges.
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Load Sharing Support: Enables balanced power distribution among multiple generators.
These benefits make the 9905‑002N a dependable choice for critical power synchronization tasks.
Technical FAQs
1. What does the SPM‑A Synchronizer do?
It synchronizes the generator output with a bus or grid by matching voltage, frequency, and phase before paralleling.
2. What parameters are controlled during synchronization?
It manages phase angle, voltage amplitude, and frequency alignment.
3. What communications does it support?
It supports serial interfaces, fieldbus protocols, CAN, and Ethernet depending on system design.
4. Can it support load sharing?
Yes — the module includes capabilities to assist balanced load distribution across multiple generators.
5. What environments is it suitable for?
It is rated for industrial temperature and humidity ranges, making it suitable for outdoor and controlled environments.
6. How is it mounted?
It can be mounted in control panels or enclosures with standard industrial mounting hardware.
7. What power supply is required?
Nominal 24 V DC or the system’s designated power supply is needed.
8. Is this unit suitable for microgrids?
Yes — it supports multi‑unit synchronization and load sharing, which are key for microgrid operation.
9. How does it interact with breakers?
It provides control signals to circuit breaker logic once synchronization conditions are met.
10. What makes it different from basic synchronizing relays?
It offers predictive control, advanced communication options, and integration flexibility for modern automation systems.
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