Current Differential Relay
GARD 8000 SYS RFL Electronics
June 20, 2014 13-46 973.334.3100
For example, if the last trip event close timer is set for 1 second. A trip will start the event window and
all trips that become active (even momentarily) are recorded. If the trips are all cleared and a reclose
occurs two seconds later, which causes another trip, a new last trip event would be saved—it would
include only the trips detected as a result of the reclosing. If the last trip event close timer was set for
three seconds the trips detected during the initial fault and the reclosing would be included in the same
last trip display.
13.4.7 SEQUENCE OF EVENTS
The Sequence of Events status webpage is shown below.
Figure 13-28. Current Differential Relay Last Trip webpage
The above web page shows SOE records with #1 being the oldest. Clicking a button will display the
data for that button. The web page displayed is an instantaneous “snapshot” of the conditions when the
trigger event occurred.
To reset this webpage do the following:
From the pull down menu select Test > System Test, and check the Current Differential Relay Module.
In the web page that appears check the “Reset SOE” box. Click Run Test.
13.4.8 OSCILLOGRAPHY
The Oscillography Records webpage is shown below.
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