Description
Woodward 8440-1924
Technical Specifications
- Part Number: 8440-1924
- Type: Microprocessor-Based Synchronizing Unit
- Power Supply: Wide-range options including 24 Vdc or 90-250 Vac
Functional Features
- Automatic Matching: Provides automatic frequency, phase, and voltage matching via analog or discrete output bias signals.
- Configuration Flexibility: Can be configured via the front-panel Human-Machine Interface (HMI) or through Woodward ToolKit software.
- Security: Features multi-level password protection for all parameter variants.
Application Scenarios
Ideal for power generation facilities requiring precise synchronization of AC generators with grid or busbar systems, specifically in applications demanding modernized control without altering the existing panel footprint.
Performance Parameters
- Voltage Detection Accuracy: Class I True RMS voltage detection for both generator and bus.
- Synchronization Modes: Phase matching via voltage matching or slip frequency synchronization.
Material Composition
Housed in a robust industrial-grade enclosure designed to withstand harsh power plant environments, featuring high-quality printed circuit boards with conformal coating.
Structural Characteristics
- Form Factor: Maintains the exact physical appearance and dimensions of the legacy SPM-D series for seamless retrofitting.
- Front Panel: Equipped with a built-in synchronizing oscilloscope for visual confirmation of breaker status.
Working Principle
Continuously monitors the generator and bus voltages, calculates the slip frequency and phase angle difference, and outputs precise bias signals to the speed controller and AVR to align the generator before issuing a close command.
Installation Requirements
A circuit breaker must be provided near the unit, easily accessible to the operator, and clearly labeled as the isolating switch for the device.
Precautions for Use
Strictly observe electrostatic discharge (ESD) precautions during handling. Users must read and follow Woodward manual 82715 regarding the handling and protection of electronic controls.
