Product Description
Woodward 8440-1831 LS-5 Circuit Breaker Control
Product Overview
- The Woodward 8440-1831 is an LS-5 Circuit Breaker Control and Protection Module designed for managing and protecting circuit breakers in generator and utility systems, commonly used in power generation, marine, and industrial applications. Part of Woodward’s LS-5 (Load Sharing and Synchronizing) series, this microprocessor-based module provides synchronization, load sharing
Technical Specifications
- The 8440-1831 has the following specifications based on industry sources and Woodward documentation:
| Specification | Details |
|---|---|
| Model/Part Number | 8440-1831 |
| Manufacturer | Woodward |
| Description | LS-5 Circuit Breaker Control and Protection Module |
| Series | LS-5 |
| Function | Controls circuit breakers, synchronizes generators, and provides protection functions |
| Processor | Microprocessor-based (specific architecture not publicly detailed) |
| Memory | Flash: 4–8 MB (for firmware and configuration) RAM: 2–4 MB (for runtime data) |
| Display | LED indicators for status, breaker state, and faults; no onboard display |
| Inputs | 3 voltage inputs (generator, 100–480 VAC, 50/60 Hz) 3 voltage inputs (bus/utility, 100–480 VAC, 50/60 Hz) 3 current inputs (1 A or 5 A, via CTs, 0.05–10 A range) 4 discrete inputs (24 VDC, for breaker feedback or control signals) |
| Outputs | 3 relay outputs (dry contact, up to 250 VAC/5 A, for breaker close/open, alarm) 1 analog output (optional, 4–20 mA, for monitoring) |
| Communication Interfaces | 2 CANbus ports (for communication with EasyGen or other LS-5 units) 1 serial port (RS-485, Modbus RTU, optional) |
| Synchronization Parameters | Phase angle: ±1° accuracy Voltage matching: ±1% accuracy Frequency matching: ±0.1 Hz accuracy |
| Protection Functions | Overcurrent, reverse power, over/under voltage, over/under frequency, phase imbalance |
| Trip Accuracy | ±5% for current, ±2% for voltage/frequency |
| Response Time | <100 ms (for synchronization and protection actions) |
| Redundancy | Non-redundant (system-level redundancy possible with multiple units) |
| Diagnostics | Fault detection, event logging (up to 100 events), status LEDs, remote monitoring via CANbus/Modbus |
| Compatibility | Woodward EasyGen controllers (e.g., EasyGen-3200-5, 8440-2050E), other LS-5 units, circuit breakers, and third-party devices via Modbus; integrates with SCADA/DCS systems |
| Power Supply | 12–36 VDC (24 VDC nominal) |
| Power Consumption | Approx. 5–10 W |
| Environmental Specifications | Operating Temperature: -20°C to +70°C (-4°F to +158°F) Storage Temperature: -30°C to +80°C (-22°F to +176°F) Relative Humidity: 5% to 95% non-condensing Vibration: IEC 60068-2-6 compliant Shock: IEC 60068-2-27 compliant |
| Enclosure | IP54 (front panel, when properly mounted); IP20 (rear) |
| Dimensions | Approx. 144 mm (H) x 144 mm (W) x 75 mm (D) |
| Weight | Approx. 0.8–1.2 kg |
| Mounting | Panel-mounted (cutout dimensions per manual) |
| Certifications | CE, UL, CSA, marine certifications (e.g., DNV, ABS, Lloyd’s Register); ATEX/IECEx Zone 2 (configuration-dependent) |