Description
⚙️ Product Datasheet & Technical Parameters
- Brand: WOODWARD
- Model: 5448-1019 (SPM-D10)
- Series: SPM-D10 Digital Synchronizer Series
- Product Name: Digital Synchronizer and Load Control Unit
- Place of Origin: United States
- Condition Status: Brand New / Factory Original Surplus
- Dimensions: Standard Panel Mount Enclosure (Approx. 144mm x 144mm x 90mm)
- Weight: Approx. 0.9 kg
- Original Region: USA Manufacturing Plant
- Power Supply: 24 VDC input power supply
- Measurement & Control Inputs: 2-phase generator voltage and 2-phase busbar voltage measuring and display with 400 VAC measuring inputs; features discrete raise/lower outputs for voltage and speed control
📖 Product Overview & Description
The Woodward SPM-D10 Synchronizer (Part 5448-1019) is a microprocessor-based digital synchronizing unit designed for paralleling generator sets. It provides accurate multi-phase voltage measurements for both the generator (2-phase) and the busbar (2-phase) up to 400 VAC, ensuring precise synchronization and monitoring capabilities in standard power generation setups.
Engineered with a reliable 24 VDC power supply requirement, the unit utilizes discrete raise and lower signals for speed and voltage adjustment to interface smoothly with prime mover governors and automatic voltage regulators. Its compact design and intuitive display make it an efficient solution for automatic or manual synchronizing applications.
🛠️ Operating Specifications & Usage Methods
Proper wiring and installation procedures are necessary for correct operation. All potential transformer (PT) voltage inputs—handling up to 400 VAC across the dual-phase generator and busbar lines—must be connected using properly rated, shielded cables separated from control and communication wiring to prevent electrical noise interference.
During setup, verify that the 24 VDC power supply is stable before energizing the system. Configure the synchronizer parameters using the front panel interface or programming software to match the system voltage, frequency, and phase angle limits. Test the discrete raise and lower outputs to ensure proper response from the governor and AVR loops prior to live breaker closure.
⚡ Startup & Shutdown Sequence
Adhering to a proper startup and shutdown sequence protects switchgear components and generator equipment from mechanical and electrical stress.
- Startup Sequence: First, check all auxiliary wiring, safety interlocks, and circuit breaker interfaces. Energize the 24 VDC control power supply to the SPM-D10 and verify that the 2-phase generator and busbar voltage readings display accurately on the unit. Bring the incoming generator up to its rated operational speed and nominal voltage. Engage the synchronizer mode to monitor phase angle and frequency difference, allowing the unit to issue the close command automatically once parameters align.
- Shutdown Sequence: Begin by ramping down the generator active power load through control commands until minimum load is reached. Open the main generator circuit breaker to decouple the unit from the common busbar. 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 24 VDC control power supply once the engine has come to a complete standstill.
❓ Frequently Asked Questions (Q&A)
- Q1: What power supply voltage does the Woodward 5448-1019 synchronizer require?
- A1: The unit operates on a 24 VDC input power supply.
- Q2: What are the voltage measuring capabilities of this specific SPM-D10 model?
- A2: It features 2-phase generator voltage and 2-phase busbar voltage measuring and display capabilities with maximum measuring inputs rated for 400 VAC.
- Q3: How does the unit adjust the generator speed and voltage during synchronization?
- A3: It uses discrete raise and lower outputs to control and trim the generator speed (via the governor) and voltage (via the AVR) until synchronization criteria are met.
