Description
Product Datasheet & Technical Parameters
- Brand: WOODWARD
- Model: 8440-1301
- Series: SPM-D10/X 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: 24 VDC Power Supply, 2-Phase Generator Voltage and 2-Phase Busbar Voltage Measuring/Display, Measuring Inputs 400 VAC, Featured Options: Qf, Qu, Analog → Speed/Voltage
Product Overview & Introduction
The WOODWARD 8440-1301 SPM-D10/X is a microprocessor-based digital synchronizer designed for paralleling single or multi-generator sets with a power grid or other generators. It features comprehensive 2-phase generator and busbar voltage measuring and display capabilities, along with 400 VAC measuring inputs and a reliable 24 VDC power supply. Equipped with advanced options including frequency difference (Q_f), voltage difference (Q_u), and analog outputs for speed and voltage control, this digital unit ensures precise synchronization, safe breaker closure, and reliable power management in 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 8440-1301 digital synchronizer securely within a protective, environmentally controlled industrial control cabinet or panel enclosure, ensuring adequate clearance for ventilation and wiring access. Connect the 24 VDC auxiliary power supply, 2-phase generator voltage inputs, 2-phase busbar voltage inputs (up to 400 VAC measuring inputs), and analog speed/voltage control lines 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 or software 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 measuring inputs, 24 VDC control power, and safety interlocks are securely connected and verified.
- Energize the 24 VDC control power supply to the WOODWARD 8440-1301 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, and phase relationships.
- Engage the automatic synchronizing mode, allowing the digital unit to issue precise analog speed and voltage adjustments, automatically closing 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 24 VDC auxiliary power supply to the synchronization module only after the prime mover has come to a complete standstill.
Frequently Asked Questions (Q&A)
- Q1: What are the voltage measuring input ratings for the WOODWARD 8440-1301?
- A1: The module features measuring inputs rated for up to 400 VAC, supporting 2-phase generator voltage and 2-phase busbar voltage measuring and display.
- Q2: What power supply voltage does this digital synchronizer require?
- A2: The unit operates on a standard 24 VDC auxiliary power supply.
- Q3: What featured options are included with this specific model?
- A3: This model includes options for frequency difference (Q_f), voltage difference (Q_u), and analog outputs for speed and voltage control.
