MicroElektronika MC30-X/10-4, Operation Manual, Page: 34 / 43

MC30-X/10-4
Doc. N°
MO-0350-ING
Copyright 2016 FW: 1211.37.06.x Date 17.06.2022 Rev. 3 Pag. 34 of 43
12.4 - LastTrip (Event Recording)
The MC records any tripping and stores the information relevant to the last 20 tripping of protection functions
(FIFO).
Each event recording includes the following information.
“Real Time Meas”
“LastTrip”
1 st event,
to scroll available events,
to “Rec #” selected,
to select the different fields;
Display Description
Rec.#x xxxx Indication of the protection function which caused the relay tripping.
For indication of the TRIP Cause the following acronyms are used:
T> = Thermal Image
I> = 1 st Overcurrent (Short Circuit)
I>> = 2 nd Overcurrent (Short Circuit)
IH = 3 rd Overcurrent (Short Circuit)
Io> = 1 st Earth Fault
Io>> = 2 nd Earth Fault
IoH = 3 rd Earth Fault
IRF = Internal Relay Fault
Date : YYYY/MM/GG Date: Year/Month/Day
Time : hh:mm:ss:ms Time: hours/minutes/second/milliseconds
IA = 0 – 65535 A RMS value of phase A current (Primary Amps)
IB = 0 – 65535 A RMS value of phase B current (Primary Amps)
IC = 0 – 65535 A RMS value of phase C current (Primary Amps)
Io = 0.0 – 6553.5 A RMS value of Zero Sequence Current (Primary Amps)
Tem = 0 - 65535 %T Actual temperature rise
to go back to “Rec #” ,
to go back to “Real Time Meas” .