MC20-CEI
Doc. N°
MO-0431-ING
Microelettrica Scientifica S.p.A. - Copyright 2009
FW 1080.36.03.X
Date 18.11.2011
Rev.
3
Pag. 25
of 35
12.4 – UltimiSc (
Event Recording
)
The relay 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
Indication of the protection function which caused the relay tripping.
For indication of the TRIP Cause the following acronyms are used:
-
I>
=
First overcurrent element (Short Circuit)
-
I>>
=
Second overcurrent element (Short Circuit)
-
I>>
=
Third overcurrent element (Short Circuit)
-
Io>
=
First earth fault element
-
Io>>
=
Second earth fault element
-
67S1
=
First directional earth fault element
67S2
=
Second directional earth fault element
-
TCS
=
Trip circuit supervision
Func
xxxxx
-
IRF
=
Internal Relay Fault
Date
: YYYY/MM/GG
Date: Year/Month/Day
Time
: hh:mm:ss:cc
Time: hours/minutes/second/hundredths of seconds
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)
Vo
= 0 – 65535
V
Zero sequence voltage
°
= 0 – 65535
°
Displacement angle Io-Vo
-
to go back to “ Rec # “,
-
to go back to “ Real Time Meas “.
