Woodward SPM-A Synchronizer 9907-028 Rev D

The Woodward SPM-A Synchronizer (part number 9907-028, Rev D) is a reliable analog control module designed for automatic synchronization of generators to a power bus or grid. It ensures precise frequency and phase matching, minimizing disturbances during paralleling operations. Key features include adjustable phase offset, gain, and stability controls, allowing customization for various generator setups. This device is widely used in power generation applications such as standby power systems, marine environments, and industrial plants where seamless integration of multiple power sources is critical. Advantages over similar products include robust construction for harsh environments, simple analog interface for easy integration with older systems, and proven reliability from Woodward's extensive experience in engine and turbine controls. Drawbacks may include lack of digital interfaces compared to modern synchronizers, potentially requiring additional components for advanced monitoring. The unit supports single-phase sensing and provides relay outputs for breaker closure. Overall, it offers cost-effective synchronization with high accuracy, reducing wear on equipment and ensuring stable power delivery.