8440-1019 Woodward SPM-D10 Digital Generator Synchronizer
Manufacturer: Woodward
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Part Number: 8440-1019 C REV:SPM-D10
Condition：New with Original Package
Product Type: Generator Parallel Controls
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The Woodward 8440-1019 SPM-D10 acts as a microprocessor-based synchronizer for three-phase AC generators equipped with Woodward or other compatible speed controls and automatic voltage regulators. This module automates the synchronization process by matching frequency, phase angle, and voltage before issuing a precise breaker closure command. We offer this unit as 100% brand new and original to ensure the highest safety standards during paralleling operations.
Technical Specifications
| Parameter | Data Specification |
| Model Number | SPM-D10 |
| Part Number | 8440-1019 |
| Power Supply | 18–32 VDC (24 VDC Nominal) |
| Frequency Range | 45–65 Hz (Compatible with 50/60 Hz systems) |
| Voltage Sensing | 100–480 VAC (Direct Line Sensing) |
| Control Outputs | Discrete "Raise/Lower" for Speed & Voltage |
| Communication | RS-485 Modbus RTU |
| Protection Rating | IP20 (Rear), IP54 (Front with gasket) |
| Operating Temp | –40 °C to +70 °C |
| Weight | 0.9 kg |
Engineering Advantages
Precision Synchronizing Logic
The 8440-1019 eliminates the risks of manual paralleling. It continuously monitors the busbar and generator voltages, calculating the exact moment for breaker closure based on the breaker's internal closing time. This prevents out-of-phase connections that cause severe mechanical stress and electrical faults.
User-Centric Interface
The front panel features a clear display and LED diagnostics. Operators quickly toggle between Automatic and Manual modes, allowing for flexible commissioning and troubleshooting. The display provides real-time data on phase differential and frequency slip, giving engineers immediate visibility into system stability.
Advanced RS-485 Integration
The integrated Modbus RTU interface allows the SPM-D10 to communicate directly with a plant-wide SCADA or DCS. This enables remote monitoring of synchronization status and centralized data logging for compliance and post-event analysis.
Rugged Industrial Design
Woodward designed the SPM-D10 for harsh environments, supporting an operational range down to –40 °C. The compact 96 x 144 mm panel-mount housing saves valuable space in control cabinets while providing high resistance to vibration and electromagnetic interference.
FAQs
Does the 8440-1019 support "Dead Bus" closing?
Yes. You can configure the SPM-D10 to recognize a dead bus situation. If the busbar lacks voltage, the controller issues a closure command to the generator breaker to energize the system, following established safety protocols.
How does the unit handle different breaker closing times?
The engineer programs the specific closure delay of the circuit breaker into the 8440-1019 during setup. The controller then predicts the phase match and sends the signal early enough to ensure the contacts touch exactly at the zero-phase point.
Can I use this synchronizer with non-Woodward governors?
The SPM-D10 works with most electronic governors and AVRs that accept discrete "Raise" and "Lower" contact inputs or analog bias signals. This makes it a versatile solution for retrofitting older generator sets with modern digital synchronization.
What is the significance of the "Revision C" status?
Revision C (and Rev A variants) represents hardware and firmware optimizations for better stability and communication speed. While the core 8440-1019 functionality remains consistent, newer revisions often provide improved noise immunity in high-voltage environments.