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7 TRIP and Fault Reset
7.1 TRIP
7.2 Fault reset
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7.1 TRIP
TRIP may be considered as event or status of the unit (see chapters bellow).
7.1.1 TRIP event
Starts in the moment of terminating the count-down of any protective function with delay, or in the moment
of activation of any immediate protective function.
A trip event leads to the following relay states:
Immediate deactivation of outputs !CommTrpPer and !CommTrpImp or activation of CommTrpPer
and CommTrpImp
The TRIP LED turns red
The appropriate counter in the statistics screen increments
The cause of the TRIP event is recorded among the last five history events
The Last Trip Time timer starts to count time and the last trip indication is set
7.1.2 TRIP status
Starts at the moment of TRIP event
During this status, the appropriate outputs are kept in fault position
During this status, it is not possible to perform Fault reset
TRIP status is active until a successful Fault reset. The fault reset can only be performed when all
measured and evaluated values are within preset limits.
While the unit is in TRIP status, other TRIP conditions are evaluated but they do not log as another TRIP
event. This is still indicated by the individual LEDs on the unit front panel.
If the BI Disable is set to ENABLED and the BI Disable is activated during this state, the TRIP status is
terminated and the fault is reset.
If the BI Disable is set to ENABLEDexlTRP and the BI Disable is activated during this state, it will have no
effect on the unit.
MainsPro G99TT 1.0.0 Global Guide
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