Description
Woodward 9907-014
Technical Specifications
- Brand: Woodward
- Part Number: 9907-014
- Product Type: Synchronizer / Load Share Relay
- Series: 9907 Series
Functional Features
- Auto-Synchronization: Automatically adjusts engine speed and voltage to match the bus.
- Breaker Closure: Issues the close command only when all synchronization criteria are met.
- Load Sharing: Initiates load transfer smoothly after synchronization to prevent power surges.
Application Scenarios
Essential in multi-generator plants, microgrids, and facilities with automatic transfer switches (ATS) and tie-breaker controls.
Performance Parameters
- Synchronization Accuracy: Extremely tight phase-angle and voltage matching tolerances.
- Response Time: Rapid detection of sync opportunities to minimize wait times.
Material Composition
Industrial-grade relay components and precision analog measurement circuits housed in a protective enclosure.
Structural Characteristics
Standard rack or panel-mount module with clearly labeled voltage and frequency input terminals and relay output contacts.
Working Principle
Continuously measures the incoming generator voltage/frequency and compares it to the bus. When the slip rate and phase difference fall within safe limits, it energizes the breaker close relay.
Installation Requirements
Wire voltage inputs directly from the generator terminals and bus. Ensure proper fusing for all voltage sensing circuits.
Usage Precautions
Never bypass synchronization checks. Regularly test the synchronizing relay’s functionality to ensure safe parallel operation.
