Woodward 8440-1978 DSLC-2 Digital Synchronizer & Load Control
Manufacturer: Woodward
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Part Number: 8440-1978
Condition：New with Original Package
Product Type: igital Synchronizers
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The Woodward 8440-1978 belongs to the advanced DSLC-2 series, representing the pinnacle of microprocessor-based synchronization and load management. This 100% brand-new unit automates the paralleling of complex generator sets by matching frequency, phase angle, and voltage with precision. It replaces antiquated analog systems with a digital architecture that handles isochronous load sharing and base loading across multiple units on a common bus.
Technical Specifications
The DSLC-2 utilizes high-speed Ethernet communications and precision sensing to maintain grid stability.
| Parameter | Details |
| Manufacturer | Woodward, Inc. (USA) |
| Model / Part Number | 8440-1978 |
| Series | DSLC-2 (Digital Synchronizer and Load Control) |
| Input Power | 12/24 VDC (Operating range: 8–40 VDC) |
| Sensing Inputs | 3-Phase Voltage & 1A CT (Current Transformer) |
| Accuracy Class | 0.5 |
| Communication | 4 Ports (Ethernet, etc.) |
| Operating Temp | –40 °C to +70 °C |
| Ingress Protection | IP20 (Rear-panel mounting) |
| Weight | 1.9 kg (4.19 lbs) |
Engineering Advantages
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Seamless Synchronization: The 8440-1978 executes "Slip Frequency" paralleling and dead-bus closures. It eliminates transient currents during breaker closure, protecting your alternators and mechanical couplings from torque spikes.
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Robust Load Balancing: This module distributes both kW (Real Power) and kVAR (Reactive Power) proportionally across the generator fleet. This ensures no single unit carries an unfair load, extending the lifespan of your prime movers.
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Extreme Thermal Resilience: While many controllers fail in cold starts or high-heat enclosures, the 8440-1978 operates reliably from -40°C to +70°C. It thrives in remote oil & gas sites and desert power plants.
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EMI and Vibration Hardened: Woodward engineers this hardware to withstand the heavy electromagnetic interference and constant vibration typical of marine engine rooms and heavy manufacturing floors.
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Advanced Diagnostics: Integrated LEDs provide immediate visual confirmation of system status, while the Ethernet-based communication allows for deep-dive troubleshooting via remote monitoring software.
FAQs
Q: Can I use the 8440-1978 to replace an original analog DSLC module?
A: Yes. The 8440-1978 (DSLC-2) acts as the modern digital successor to the legacy DSLC line. It offers superior stability and easier software-based configuration, though you should verify terminal wiring as digital units often utilize different pinouts for Ethernet-based load sharing.
Q: Does this unit handle load shedding?
A: Absolutely. The 8440-1978 includes load shedding logic to protect the bus during generator failure or unexpected surges, ensuring that critical loads remain online while non-essential breakers trip.
Q: What type of mounting is required?
A: This model is designed for rear-panel integration within a control cabinet. Due to its IP20 rating, you must install it in a clean, dry enclosure to prevent dust or moisture ingress.
Q: How does the unit communicate with other DSLC-2 modules?
A: The 8440-1978 uses high-speed Ethernet for peer-to-peer communication. This "Global Load Sharing" network allows multiple units to coordinate load and frequency data without the need for a separate master PLC.