WOODWARD | 8440-1023 | SPM-D21 Two Breaker Synchronizer Module

Description

📊 Product Technical Parameters

• Brand: WOODWARD
• Model: 8440-1023 (SPM-D21)
• Series: SPM-D21 Two-Breaker Synchronizer Series
• Product Name: Microprocessor-Based Two Breaker Synchronizer and Load Control Module
• Country of Origin: USA
• Condition Status: Industrial Factory Original / Brand New In-Stock
• Dimensions: Standard DIN enclosure format (approx. 144 mm x 144 mm x 91 mm)
• Weight: Approximately 1.0 kg (2.2 lbs)
• Original Region: United States
• Power Supply / Rating: 12/24 VDC auxiliary power supply (9 to 32 VDC operating range)

⚙️ Operation Specifications and Usage Methods

• Installation Preparation: Ensure all power sources to the electrical switchgear panel are completely locked out and tagged out. Mount the compact SPM-D21 unit securely into a standard panel door cutout using the provided mounting hardware, ensuring proper front-panel sealing.
• Parameter Configuration: Connect a configuration PC to the service port using Woodward ToolKit or configuration software to set up dual-breaker control logic, busbar voltage references, generator potential transformer (PT) ratios, PID dynamics, and load control parameters.
• Operational Control: Monitor real-time synchronization, power transfer states, and dual-breaker operations via the integrated graphical display while the module automatically handles complex multi-breaker switching and load sharing routines.

⚡ Startup and Shutdown Sequence

• Startup Sequence:
  1. Inspect all terminal wiring for the generator potential transformers, dual busbar inputs, and auxiliary power connections.
  2. Energize the 12/24 VDC control power supply and verify that the front display initializes successfully without error codes.
  3. Start the prime mover and bring the generator up to rated speed and nominal voltage.
  4. Enable the SPM-D21 synchronization mode to execute automatic frequency, phase angle, and voltage matching across the selected breaker path before issuing the breaker close command.
• Shutdown Sequence:
  1. Transfer active electrical load away from the synchronized generator using manual or automated ramp commands.
  2. Open the active generator circuit breakers via the control module to decouple the unit from the electrical bus.
  3. Shut down the prime mover engine or turbine according to standard operational and safety procedures.
  4. De-energize the auxiliary control power supply and measuring input lines once the system is fully offline.

💡 Product Description

The Woodward 8440-1023 (SPM-D21) is an advanced, microprocessor-based digital synchronizer and load control module designed specifically for complex power generation systems requiring control of up to two circuit breakers. It integrates true RMS measuring, advanced synchronization algorithms, flexible analog and discrete control interfaces, and comprehensive load sharing capabilities into a single powerful unit for multi-breaker switchgear configurations.

❓ Frequently Asked Questions (Q&A)

• Q: What is the primary advantage of the SPM-D21 over single-breaker synchronizers?
  • A: The SPM-D21 is engineered to manage and synchronize two separate circuit breakers within a single unit, making it ideal for complex tie-breaker or multi-path power transfer applications.
• Q: What auxiliary power supplies are supported by this model?
  • A: It supports a standard 12/24 VDC auxiliary power supply with a wide operating range spanning from 9 to 32 VDC.
• Q: How are parameters adjusted on the SPM-D21?
  • A: Parameters can be configured using the integrated front-panel display and soft keys or via connection to Woodward service software.