Woodward 9905-002 SPM-A Synchronizer High Quality

Overview

The Woodward 9905-002 is part of the SPM-A Synchronizer Series. It synchronizes generator voltage, frequency, and phase angle with a utility bus or another generator. The unit actively biases the offline generator speed to align with the system. Once synchronization conditions are met, it issues a breaker close command. This design ensures safe and efficient paralleling in industrial power generation systems.

Technical Specifications

• Model Number: 9905-002
• Series: SPM-A Synchronizer
• Input Voltage: 115 VAC RMS or 230 VAC RMS (120/208/240 VAC also supported)
• Frequency Range: 50 to 60 Hz
• Phase Window: ±10° (some sources specify ±3°)
• Voltage Matching Tolerance: 1% to 5%
• Power Supply: AC input (some sources mention 24 VDC nominal)
• Power Consumption: Approx. 10 W
• Operating Modes: RUN, CHECK, PERMISSIVE, OFF
• Synchronization Method: Speed bias output adjusts generator governor
• Dwell Time Options: 1/8, 1/4, 1/2, or 1 second (factory set to 1/2 second)
• Output Options: High impedance (2301), low impedance (2301A, EPG, 2500), or EPG output
• Breaker Closure Signal: Relay contact closure when synchronization criteria are satisfied
• Mounting Type: Panel-mounted
• Operating Temperature Range: –20 °C to +70 °C