WOODWARD | 9907-007 | DSLC Digital Synchronizer Load Control

Description

📊 Product Technical Parameters

• Brand: WOODWARD
• Model: 9907-007 (Replacement for Obsolete Model 9905-287)
• Series: DSLC (Digital Synchronizer and Load Control) Series
• Product Name: Digital Synchronizer and Load Control Module for Three-Phase AC Generators
• Country of Origin: USA
• Condition Status: Industrial Factory Original / Replacement Upgrade Unit
• Dimensions: Standard modular enclosure format (approx. 460.65 mm x 264.16 mm x 58.42 mm)
• Weight: Approximately 3.1 kg (6.8 lbs)
• Original Region: United States
• Power Supply / Rating: 120/240 VAC voltage input configuration with full operational functions

⚙️ Operation Specifications and Usage Methods

• Installation Preparation: Ensure all power sources to the electrical control cabinet are completely locked out and tagged out. Mount the modular replacement unit securely inside an industrial panel enclosure, observing standard electrostatic discharge (ESD) precautions.
• Parameter Configuration: Configure the 120/240 VAC voltage inputs and set up the Wye potential transformer (PT) configuration using the programming interface or software tools. Calibrate the +3.0 VDC speed bias output to match the specific control input requirements of the governor system replacing older legacy parameters.
• Operational Control: Interface the DSLC module with generator switchgear to manage automated synchronization, dead bus closing, isochronous load sharing, and active power balancing across parallel-running AC generator sets.

⚡ Startup and Shutdown Sequence

• Startup Sequence:
  1. Inspect all terminal wiring, confirming proper isolation across the Wye PT configuration and the 120/240 VAC voltage input lines.
  2. Energize the system auxiliary power supplies and verify that the DSLC replacement module powers on cleanly without error codes or fault flags.
  3. Start the prime mover and bring the generator up to rated operating speed and nominal voltage.
  4. Engage the automatic synchronization and load sharing mode to allow the unit to manage frequency matching, phase alignment, and breaker closure, followed by active load control via the +3.0 VDC speed bias output.
• Shutdown Sequence:
  1. Transfer active electrical load away from the generator unit using manual or automated base-load shedding.
  2. Open the generator circuit breaker to completely decouple the unit from the shared electrical busbar.
  3. Shut down the prime mover engine or turbine according to standard mechanical safety protocols.
  4. De-energize the input power supplies and control circuits once the system is fully offline.

💡 Product Description

The Woodward 9907-007 is a direct replacement Digital Synchronizer and Load Control (DSLC) module designed to succeed the obsolete legacy part number 9905-287. Engineered for three-phase AC generators operating in parallel, it integrates advanced synchronizing and load sharing functions into a single platform, featuring a 120/240 VAC voltage input, a Wye potential transformer (PT) configuration, and a stable +3.0 VDC speed bias output for seamless governor integration.

❓ Frequently Asked Questions (Q&A)

• Q: Which obsolete part number does the 9907-007 directly replace?
  • A: It serves as an official replacement and upgrade unit for the obsolete Woodward DSLC part number 9905-287.
• Q: What speed bias output does this replacement module feature?
  • A: It is built with a +3.0 VDC speed bias output specification to interface with compatible electronic speed controls and governors.
• Q: What PT configuration and voltage input are supported?
  • A: It supports a Wye potential transformer (PT) configuration paired with 120/240 VAC voltage inputs.