Description
Product Datasheet & Technical Parameters
- Brand: WOODWARD
- Model: 8440-1706
- Series: SPM-D11/LSXR Series
- Product Name: Synchronizer
- Manufacturing Origin: United States
- Physical Condition: Brand New / Factory Sealed
- Dimensions: Standard Industrial Enclosure Module
- Weight: Approx. 0.8 kg (1.8 lbs)
- Country of Origin: USA
- Power / Input Rating: 12/24 VDC Power Supply and Discrete Inputs, 2-Phase Generator and 2-Phase Busbar Voltage Display/Measuring, 1-Phase Generator Current, Measuring Inputs 100 VAC, ../5 A
Product Overview & Introduction
The WOODWARD 8440-1706 SPM-D11/LSXR is an advanced digital synchronizer and load-sharing module designed for precise power generation control. It features robust 12/24 VDC power supply compatibility with integrated discrete inputs, along with 2-phase generator and 2-phase busbar voltage display and measuring capabilities. Equipped with 1-phase generator current monitoring and measuring inputs rated at 100 VAC and ../5 A, this unit ensures reliable synchronization, accurate load distribution, and safe breaker closure in critical industrial applications.
Operational Specifications & Guidelines
Prior to installation, ensure that all electrical power sources and control circuits are completely de-energized and locked out to prevent electrical shock or arc flash hazards. Mount the 8440-1706 digital synchronizer securely within a protective, environmentally controlled industrial control cabinet or panel enclosure, ensuring adequate clearance for ventilation and wiring access. Connect the 12/24 VDC auxiliary power supply, discrete inputs, 2-phase generator voltage inputs, 2-phase busbar voltage inputs, and 1-phase current transformer inputs (100 VAC, ../5 A) strictly in accordance with the manufacturer’s wiring schematics. Verify all terminal torque specifications and ensure proper system grounding before restoring power. Configure operating parameters via the front panel interface to match the specific dynamic requirements of the prime mover.
Startup & Shutdown Sequencing
To prevent breaker tripping, out-of-phase synchronization, or control system instability, operators must strictly follow the defined startup and shutdown procedures.
- Startup Sequence:
- Verify all external wiring, voltage and current measuring inputs, control power, and safety interlocks are securely connected and verified.
- Energize the 12/24 VDC control power supply to the WOODWARD 8440-1706 module and observe the digital display during the internal diagnostic self-test.
- Start the prime mover and allow it to reach rated nominal speed and thermal stability under governor control.
- Enable the synchronizer to monitor the 2-phase generator and busbar voltages, frequencies, phase relationships, and generator current.
- Engage the automatic synchronizing and load-sharing mode, allowing the unit to issue precise control adjustments and automatically close the generator circuit breaker precisely at the synchronous point.
- Shutdown Sequence:
- Gradually transfer active electrical load away from the generator set back to the main utility grid or companion generators until unloaded.
- Open the main generator circuit breaker manually or via system command to isolate the generator electrically from the busbar.
- Initiate the standard prime mover cool-down cycle at idle speed for the required duration.
- Issue the stop command to shut down the engine or turbine completely.
- De-energize the auxiliary control power to the synchronization module only after the prime mover has come to a complete standstill.
Frequently Asked Questions (Q&A)
- Q1: What power supply voltages are supported by the WOODWARD 8440-1706?
- A1: The module supports a versatile 12/24 VDC power supply range along with built-in discrete inputs.
- Q2: What are the voltage and current measuring input specifications for this model?
- A2: It features 2-phase generator and 2-phase busbar voltage display and measuring capabilities with measuring inputs of 100 VAC, as well as 1-phase generator current measuring rated at ../5 A.
- Q3: What core function does the SPM-D11/LSXR series provide?
- A3: This series provides automated digital synchronization, voltage/frequency monitoring, and load-sharing control for generator sets operating in parallel environments.
