Sync Relay Phase Monitor
The SYNC RELAY MODULE compares 2 AC sine waves. When both signals are in phase, within a set window tolerance, an output relay is energized. If the difference in frequency, between the 2 sources, is greater than the set value, the syncing operation is inhibited. This module is ideal for energizing the field, of a synchronous motor, during the starting sequence and also for pulling in contactors to parallel 2 AC generators. There is an analog output signal for a phase meter.

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