Description
Woodward 8440-2082
Technical Specifications
- Control Functions: Speed governing, voltage regulation (via AVR interface), and load sharing.
- Protection: Comprehensive generator and engine protection (over/under voltage, over/under frequency, overcurrent, etc.).
- Synchronization: Automatic synchronizer with phase matching and frequency sliding.
- Communication: Modbus RTU/TCP for integration with SCADA and BMS.
Functional Features
- Auto Mains Failure (AMF): Automatic start/stop and transfer upon mains failure/restoration.
- Parallel Operation: Supports droop and isochronous load sharing for multiple generators.
- Programmable Logic: Flexible logic for custom control sequences and interlocks.
- Event Recording: Detailed history of alarms, trips, and operational events.
Application Scenarios
Ideal for emergency standby generators, prime power installations, peak shaving, and microgrid applications.
Performance Parameters
- Synchronization Accuracy: Precise matching of voltage, frequency, and phase angle.
- Protection Response: Fast and selective tripping to isolate faults.
- Reliability: Proven performance in critical power applications.
Material Composition
Ruggedized enclosure with high IP rating for harsh environments. Internal electronics are industrial-grade with conformal coating.
Structural Characteristics
- User Interface: Large LCD display with backlight and navigation keys for easy operation.
- Keypad: Membrane or tactile keys for local control and parameter entry.
- Connectors: Plug-in terminal blocks or multi-pin connectors for simplified wiring.
Working Principle
The controller continuously monitors generator and mains parameters. During AMF mode, it starts the engine and closes the generator breaker upon detecting valid output. In parallel mode, it synchronizes the generator to the bus and adjusts fuel and excitation to share load proportionally. It continuously checks for fault conditions and initiates protective shutdowns as needed.
Installation Requirements
- Mount in a suitable enclosure with adequate ventilation and protection.
- Connect all sensors, actuators, and power supplies according to the wiring diagram.
- Configure parameters to match the specific generator and application.
Usage Precautions
- Always verify protection settings and trip functions before commissioning.
- Perform regular maintenance and functional testing as per the manual.
- Keep firmware and configuration backups up to date.
