Woodward 9907-252

الوصف

The Woodward 9907-252 is a Load Sharing Module (LSM). This module is a key component in a power generation system designed to manage and distribute electrical load evenly among multiple parallel-connected generators.

Key Features and Applications

The LSM is a critical part of a load-sharing system, ensuring that each generator contributes its fair share of the total load. This prevents overloading a single generator and ensures a stable power supply.

• Load Sharing: The primary function is to provide isochronous and droop load-sharing capabilities. This means the module can either maintain a constant frequency across all generators (isochronous mode) or allow the frequency to drop slightly as the load increases (droop mode), which is often used for stability and to prevent hunting between units.
• System Integration: The 9907-252 works by accepting signals from current transformers (CTs) and potential transformers (PTs) to measure the load on the generator. It then outputs a control signal to the engine’s speed governor, telling it to increase or decrease the engine speed to adjust its power output.
• Compatibility: This module is designed to work with other Woodward control devices, such as the SPM-A and SPM-D synchronizers, and various speed governors.
• Power Supply: Unlike some other models in the series, the 9907-252 is powered by a 24 VDC supply, with a range of 18-32 VDC.
• Output Type: The 9907-252 provides an analog output with a rating of +0.5 to +4.5 VDC to control the speed setting input of the engine’s speed control.

Technical Specifications