Description
⚙️ Product Datasheet & Technical Parameters
- Brand: WOODWARD
- Model: 8440-1027 (SPM-D21/PSVX)
- Series: SPM-D21 / PSVX Synchronizer Series
- Product Name: Digital Synchronizer and Load Control Module
- Place of Origin: United States
- Condition Status: Brand New / Factory Original Surplus
- Dimensions: Standard Panel Mount Enclosure (Approx. 144mm x 144mm x 100mm)
- Weight: Approx. 1.0 kg
- Original Region: USA Manufacturing Plant
- Display & Measurement Specs: Features display and measurement of 2-phase generator voltage, 1-phase generator current, 2-phase busbar voltage, and 3-phase mains voltage
📖 Product Overview & Description
The Woodward SPM-D21/PSVX (Part 8440-1027) is an advanced digital synchronizing and power management module designed for complex power generation and distribution setups. It provides comprehensive multi-phase measurement capabilities, enabling real-time monitoring and display of 2-phase generator voltage, 1-phase generator current, 2-phase busbar voltage, and 3-phase mains voltage.
Engineered for precision and reliability, the unit integrates multi-breaker synchronization, load control, and protection features into a single compact housing. It interfaces smoothly with compatible engine governors and automatic voltage regulators (AVRs) to ensure safe, stable parallel operation and seamless tie-in to the electrical grid or local busbar.
🛠️ Operating Specifications & Usage Methods
Proper installation and wiring are crucial for accurate multi-phase measurements and system safety. All potential transformer (PT) voltage inputs—spanning the 2-phase generator, 2-phase busbar, and 3-phase mains lines—along with the 1-phase current transformer (CT) input, must be wired using shielded cables and kept physically separated from high-voltage power paths to prevent signal corruption and electromagnetic interference.
During configuration, use the front-panel interface or authorized software to define nominal system parameters, voltage thresholds, frequency bands, and phase angle limits. Verify all multi-phase input configurations and test control output loops before initiating any live synchronization or breaker-closing operations.
⚡ Startup & Shutdown Sequence
Following a structured startup and shutdown sequence protects the prime mover, electrical switchgear, and generator components from mechanical stress and electrical transients.
- Startup Sequence: First, inspect all auxiliary control circuits, safety interlocks, and circuit breaker mechanisms. Energize the system control power and verify that the 2-phase generator voltage, 1-phase generator current, 2-phase busbar voltage, and 3-phase mains voltage display accurately on the unit. Bring the generator up to its rated operational speed and nominal voltage. Activate the synchronizer mode to monitor slip frequency and phase angle, letting the unit automatically issue close commands once parameters safely align.
- Shutdown Sequence: Begin by ramping down active power generation through load reduction commands until minimum load is achieved. Open the main generator and mains circuit breakers to decouple the unit from the electrical network. Allow the prime mover to run at a no-load idle state for thermal stabilization cool-down. Issue the stop command to shut down the engine, and finally de-energize the control power supply once all motion has completely ceased.
❓ Frequently Asked Questions (Q&A)
- Q1: What are the specific measurement and display features of the Woodward 8440-1027?
- A1: It features measurement and display capabilities for 2-phase generator voltage, 1-phase generator current, 2-phase busbar voltage, and 3-phase mains voltage.
- Q2: What application environment is the SPM-D21/PSVX series typically used for?
- A2: It is designed for advanced generator paralleling, multi-breaker synchronization, and comprehensive power management applications requiring extensive voltage and current monitoring.
- Q3: How does the unit ensure safe breaker closure during grid synchronization?
- A3: It continuously monitors and compares the voltage, frequency, and phase angle discrepancies across the generator, busbar, and mains lines, issuing a breaker close signal only when all parameters fall within safe, predefined synchronization limits.
