Woodward 9907-028 SPM-A Synchronizer Module

Product:

The SPM-A Synchronizer biases the speed of an off-line generator set so that the frequency and phase match those of another generator or the utility bus. Then it automatically issues a contact closure signal to close the circuit breaker between the two when frequency and phase are matched within limits for a specified match-up time.

The SPM-A is a phase-locked-loop synchronizer and strives for a perfect match of frequency and phase. The SPM-A Synchronizer with voltage matching generates additional raise and lower signals (relay contact closures) to the generator’s voltage regulator. Voltages must match within the SPM-A’s tolerance before breaker closure occurs.

Both synchronizers versions have three output options: high impedance, low impedance, and EPG. Select the high impedance output for single-unit synchronization when the engine is controlled by a Woodward 2301 control. Select the low impedance output for single-unit synchronization when the engine is controlled by a Woodward 2301A, 2500, or Electrically Powered Governor (EPG) control through a Generator Load Sensor. Use the EPG output when using a Woodward EPG control without load sensing. Both units have the following features:

 120 or 208/240 Vac input

 10 degree phase window

 1/8, 1/4, 1/2, or 1 second dwell time (internally switch selectable, factory set for 1/2 second)

Synchronizing

• Phase match or slip frequency synchronization with voltage matching

• Two-phase sensing of generator and bus

• Selectable operating modes like SPM-A (Run, Check, Permissive, and OFF)

• Synchro-check possible

• Synchronization time monitoring

• Load/var sharing

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