Description
The Woodward SPM-A Synchronizer 9907-028 is an automatic generator synchronizer designed for power generation control systems. It provides automatic frequency and phase matching between a generator and bus before circuit breaker closing, helping achieve proper synchronization during generator paralleling operations. The SPM-A synchronizer is commonly used with Woodward 2301, 2301A, Electrically Powered Governor (EPG), and 2500 load-sharing control systems.
The 9907-028 model is the standard SPM-A version without voltage matching. It operates at 50/60 Hz, provides a ±10° phase-angle window, and supports automatic synchronizing functions including breaker closure control.
9907-028
📋 Product Datasheet
| Parameter | Value |
|---|---|
| Brand | Woodward |
| Model | 9907-028 |
| Series | SPM-A Synchronizer |
| Product Name | Automatic Generator Synchronizer |
| Application | Generator Paralleling & Synchronization |
| Frequency Range | 50/60 Hz |
| Phase Angle | ±10° |
| Voltage Matching | No |
| Voltage Input | 115/230 VAC |
| Power Consumption | Max. 5 W |
| Country of Origin | USA |
| Condition / Status | Used / Verify Physical Unit |
⚙️ Product Features
🔹 Automatic Synchronization – Provides automatic matching of generator frequency and phase before breaker closing.
🔹 Generator Paralleling Control – Designed for applications where generators must be synchronized before connection to a common bus.
🔹 SPM-A Standard Version – The 9907-028 configuration provides frequency and phase matching without voltage matching.
🔹 Wide Compatibility – Designed for integration with Woodward load-sharing and governor control systems including 2301, 2301A, EPG, and 2500 series equipment.
🔹 Adjustable Synchronizing Parameters – Supports selectable match-up time and adjustable synchronization characteristics.
🔹 Industrial Power Generation Use – Suitable for generator control panels, marine power systems, and industrial power plants.
❓ Common Questions & Answers
Q1: What is the Woodward 9907-028?
A: It is an SPM-A automatic synchronizer used for generator synchronization and paralleling control.
Q2: Does the 9907-028 support voltage matching?
A: No. The 9907-028 is the standard non-voltage-matching version. The 9907-029 provides voltage matching capability.
Q3: What frequency does this synchronizer support?
A: It supports 50/60 Hz generator applications.
Q4: What is the phase-angle setting?
A: The specified phase-angle window is ±10°.
Q5: What systems can use the SPM-A synchronizer?
A: It is designed for systems using Woodward 2301, 2301A, EPG, and 2500 load-sharing controls.
Q6: Is the 9907-028 a generator controller?
A: No. It is a synchronizer module that works together with generator governors, load-sharing controls, and breaker-control systems.
Q7: What should be checked before replacement?
A: Confirm the exact part number, voltage requirements, frequency, wiring configuration, breaker interface, and existing generator control system compatibility.
⭐ Recommended Woodward Models
- 9907-029 – SPM-A Synchronizer with Voltage Matching
- 9905-003 – SPM-A Synchronizer with 5% Voltage Matching
- 9905-001 – SPM-A Synchronizer Standard Version
- 9905-002 – SPM-A Synchronizer with 1% Voltage Matching
- 9906-121 – SPM-A Synchronizer with Lloyd’s Approved Configuration
- 2301A Load Sharing Control – Generator Load Sharing Controller
- 2301 Electronic Load Sharing Control – Generator Control Module
- EPG Speed Control – Electrically Powered Governor System
- 2500 Load Sharing Control – Generator Control System
- 505 Digital Governor Control – Engine Speed and Load Control System
