Description
Woodward 8440-1831
Technical Specifications
- Part Number: 8440-1831
- Type: Microprocessor Synchronizing Unit
- Power Supply: Wide-range AC/DC input options
- Voltage Detection: True RMS measurement
Functional Features
- Automatic Synch-Check: Prevents out-of-phase breaker closing.
- Bias Output: Provides analog or discrete signals to speed and voltage controllers.
- Visual Confirmation: Built-in oscilloscope display for manual verification.
Application Scenarios
Essential for power plants, microgrids, and marine vessels requiring generator paralleling.
Performance Parameters
- Voltage Accuracy: Class I True RMS accuracy.
- Response Time: Rapid calculation of slip frequency and phase angle.
Material Composition
Industrial-grade enclosure with conformal-coated electronics for harsh environment protection.
Structural Characteristics
- Front Panel: LCD display with synchronizing oscilloscope and status LEDs.
- Keypad: Membrane keypad for local parameter configuration.
Working Principle
Continuously compares generator and bus voltages, calculating the optimal closure point based on slip frequency and phase angle, then issuing a close command when conditions are met.
Installation Requirements
Install in a clean, dry control panel. Ensure voltage transformer (VT) and current transformer (CT) wiring is properly shielded and grounded.
Precautions for Use
Verify breaker closing time compensation settings. Never bypass synch-check safety interlocks.
