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Ground Fault Alarm vs. Ground Fault Alarm and Trip
The WL ground fault module can be supplied as one of two variants. The first option is an alarm only module. This device has a variable pick-up and time delay settings. After the device remains in pick-up condition for the specified time delay, an
alarm signal is generated. This alarm can be viewed locally, annunciated across the connected communications network, or supervisory system.
The second variant of the WL ground fault module contains both an alarm function, and a tripping element. Like the alarm only device, after the ground fault unit remains in pick-up condition for the specified time delay, an alarm signal is generated. This alarm can be viewed locally, annunciated across the connected communications network, or supervisory system. This module also includes a ground fault trip function. The ground fault trip function can be set to a different pick-up point than the ground fault alarm (typically higher), and will trip the circuit breaker after remaining in pick-up range for the specified time delay.
