Table 5.1.12.-1 Recorded data
REGISTER Data description
EVENT1
*
Phase current L1, measured as a multiple of the rated current, I
n
,is
displayed in two registers: the main register and the sub register. When a
stage starts but does not trip, the maximum fault current during the start
period will be stored in both the main register and the sub register. When a
stage trips, the fault current at the time of the trip will be stored in the main
register and the maximum fault current during the start period in the sub
register. The same applies to phase currents L2, L3 and I
0
.
*
The phase unbalance, ΔI, as a percentage of the maximum phase current
value. When the stage starts but does not trip, the maximum phase
unbalance value during the start period will be stored. When the stage trips,
the fault unbalance at the time of the trip will be stored.
*
Thermal level, as a percentage of the maximum thermal level of the cable, at
activation of a start or alarm signal. If the thermal protection stage has been
set out of operation, dashes will be shown on the LCD and “999” when read
via serial communication.
*
The maximum thermal level during the time the start or alarm signal was
active, as a percentage of the maximum thermal level of the cable, or in case
of a trip, the thermal level, as a percentage of the maximum thermal level of
the cable, at activation of a trip signal. If the thermal protection stage has
been set out of operation, dashes will be shown on the LCD and “999” when
read via serial communication.
*
Duration of the starts of stages I>, I>>, I>>>, ΔI, I
0
> and I
0
>>, the trip of
stage ARC (local), the trip of stage ARC (remote), and of the external trip. A
value other than zero indicates that the corresponding stage has started
whereas the value 100% indicates that the operate time of the stage has
elapsed, i.e. the stage has tripped. If the operate time of a stage has elapsed
but the stage is blocked, the value will be 99% of the set or calculated
operate time.
*
Trip number in the auto-reclose sequence. The number 1...20 indicates the
order of the trip in the AR sequence. The value 1 indicates the first trip in the
AR sequence, the value 2 the second trip, and so forth. On expiration of the
set reclaim time, the value will start from 1 again. If the AR function has been
set out of operation, the value will always be 1.
*
Time stamp for the event. The time when the collected data was stored. The
time stamp is displayed in two registers, one including the date expressed as
yy-mm-dd, and the other including the time expressed as HH.MM; SS.sss.
EVENT 2 Same as EVENT 1.
EVENT 3 Same as EVENT 1.
EVENT 4 Same as EVENT 1.
EVENT 5 Same as EVENT 1.
78
REF 610REF 610
Feeder Protection Relay
Technical Reference Manual
1MRS755310
To Next Page
Loading...
