Boomerang triggering mechanisms are most often used for voltage monitoring, detecting overcurrent/high load conditions, or complete loss of load. However, the advanced triggering features in the Boomerang allow for more complex scenarios. This white paper provides step-by-step instructions on how to configure an alarm and email notification to trigger when a monitored load has not drawn the required current after a specific period of time. This type of trigger is useful for monitoring loads that cycle on and off, where a simple current threshold is not sufficient. The example load in this paper is a refrigerator. If the refrigerator’s power source has failed or if the refrigerator has not pulled any current for an extended period of time, the Boomerang can trigger an email alarm to warn that the refrigerator has stopped. Although a singlephase 120V plug-in Boomerang is used as an example here, the same concept may be used in the 3-phase Boomerang, for monitoring a large industrial load. In the 3-phase case, separate thresholds are used for each phase, and loss of load in any phase exceeding the time period will trigger an alert.
This white paper includes: