8440-1706 A SPM-D11
Product Name
Woodward 8440-1706 A SPM-D11 Microprocessor-Based AC Generator Synchronizer Module(The naming follows Woodward’s power control conventions:
- “8440-1706 A”: Identifies the specific model in Woodward’s SPM-D11 synchronizer series, with “A” denoting the standard configuration for industrial applications.
- “SPM-D11”: Stands for “Synchronizer and Power Management – Digital 11,” highlighting its dual role in synchronization control and basic power management.
- “Microprocessor-Based AC Generator Synchronizer”: Emphasizes its core function—using digital processing to match generator parameters (frequency, phase, voltage) with the grid for seamless parallel operation.
This module acts as a “generator grid-connection coordinator,” ensuring safe breaker closure and stable power sharing while preventing electrical transients that could damage generators or equipment.)
2. Product Description
The 8440-1706 A SPM-D11 is an industrial-grade synchronizer module engineered by Woodward to address core challenges in generator parallel operation: inaccurate manual synchronization, unstable load distribution, and lack of integrated protection. As a key component of Woodward’s power control ecosystem, it integrates automatic parameter matching, load sharing capabilities, and ANSI-standard protection—making it indispensable for:
- Power Generation Plants: Synchronizing diesel/gasoline generators with the utility grid to supplement peak power demand.
- Marine Applications: Coordinating onboard generators for stable power supply to propulsion systems and shipboard equipment.
- Oil & Gas Industry: Managing generator sets for remote drilling rigs and production platforms, where reliable power is critical for operations.
- Industrial Facilities: Integrating backup generators with facility power systems to ensure uninterrupted supply during grid outages 。
Key Functional Advantages
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Precision Automatic SynchronizationEliminates human error in manual synchronization by automatically matching generator frequency, phase, and voltage with the grid. It uses analog or discrete output bias signals to adjust compatible speed controls and automatic voltage regulators (AVRs) ， ensuring breaker closure occurs within a 1° phase difference window—preventing destructive current surges that can damage generator windings.
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Dual-Mode Power ManagementSupports both parallel operation (grid-connected) and
