Description
Woodward 9907-006
Technical Specifications:
- Brand: Woodward
- Model: 9907-006
- Product Type: Main Synchronizer and Load Controller (MSLC)
- Power Supply Requirement: 8 to 32 VDC continuous
- Voltage Sensing Input: 120 VAC Open Delta Potential Transformer (PT) configuration
- Frequency Input Range: 45 to 66 Hz
- Certifications: UL and cUL listed
Functional Features:
- Integrated Synchronization: Provides automatic synchronization options including phase matching and slip frequency control for seamless generator-to-bus paralleling.
- Load Management: Acts as a utility load sensor and load level controller for both import and export operations, ensuring balanced power distribution.
- Wiring Optimization: Significantly reduces the amount of wiring required between the synchronizer module, load sensors, and automatic load control systems.
- Redundancy Elimination: Integrates multiple functions into a single unit, eliminating the need for redundant external sensors such as separate PT, CT, and MOP modules.
Application Scenarios:
Designed for three-phase generation sites equipped with Woodward Digital Synchronizer and Load Control (DSLC) devices, operating in parallel with utility grids or local plant buses.
Performance Parameters:
- System Compatibility: Interfaces seamlessly with DSLC modules for actual and reactive load control.
- Voltage Matching: Capable of matching plant voltage with DSLC parameters prior to parallel closing.
- Bus Configuration: Supports three-phase utility bus and single-phase generator bus configurations via Open Delta PT.
Material Composition:
Constructed with high-reliability industrial microprocessors and ruggedized electronic components, housed in a durable metal enclosure designed for harsh electrical environments.
Structural Characteristics:
Features a modular panel-mount design with standardized terminal blocks for power, voltage sensing, frequency inputs, and communication links. The layout is optimized for minimal external wiring and easy maintenance access.
Working Principle:
The MSLC continuously monitors generator and bus voltages, frequencies, and phase angles. Using advanced microprocessor algorithms, it calculates the precise closing instant for the circuit breaker to achieve zero-phase-difference synchronization. Post-parallel, it regulates generator output to match load demands and share power proportionally.
Installation Requirements:
Install in a climate-controlled control panel with adequate ventilation. Wire the Open Delta PT and frequency inputs according to the specified polarity and phase sequence. Ensure the 8-32 VDC power supply is clean and regulated.
Usage Precautions:
Verify all PT and CT polarities before initial energization. Perform secondary injection testing to validate synchronization logic and load sharing accuracy. Always back up configuration parameters before making system modifications.
