Seg MRU3-1, Руководство пользователя

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TB MRU3-1 12.00 E 13
5.5.3 Adjustment of trigger occurences
There is a choice between four different occurences:
P_UP (PickUP) Storage is initiated after recognition
of a general activation.
TRIP Storage is initiated after a trip has
occured.
A_PI (After Pickup) Storage is initiated after the last
activation threshold was fallen
short of.
TEST Storing is activated by simultaneous
actuation of the keys <+> and <->.
During the recording time the
display shows “Test”.
5.5.4 Pre-trigger time (T
pre
)
By the time T
pre
it is determined which period of time
prior to the trigger occurence should be stored as well.
It is possible to adjust a time between 0.05s and the
max. recording interval (2, 4 and 8s). With keys <+>
and <-> the values can be changed and with
<ENTER> be saved.
5.6 Date and time
5.6.1 Adjustment of the clock
When adjusting the date and time, LED
!
lights up.
The adjustment method is as follows:
Date : Year Y=00
Month M=01
Day D=01
Time : Hour h=00
Minute m=00
Second s=00
The clock starts with the set date and time as soon as
the supply voltage is switched on. The time is safe-
guarded against short-term voltage failures (min. 6
minutes).
Note:
The window for parameter setting is located behind
the measured value display. The parameter window
can be accessed via the <SELECT/RESET> key.
5.7 Indication of measuring values
5.7.1 Measuring indication
In normal operation the following measuring values
can be displayed.
•
Voltages (LED L1, L2, L3 green)
•
In star connection all phase-to-neutral voltages
•
In delta connection all phase-to-phase voltages
5.7.2 Unit of the measuring values
displayed
The measuring values can optionally be shown in the
display as a multiple of the "sek" rated value (x ln) or
as primary current (A). According to this the units of the
display change as follows:
Indication as Range Unit
Sec. voltage 000V - 999V V
Primary voltage .00V – 999V
1k00 – 9k99
10k0 – 99k0
100k – 999k
1M00 –-
3M00
V
kV
kV
kV
MV
Table 5.3: Units of the display
5.7.3 Indication of fault memory data
All faults detected by the relay are indicated on the
front plate optically. For this purpose, the three LEDs
(L1, L2, L3) and the four function LEDs (U<, U<<, U>,
U>>) are equipped at
MRU3-1 . Not only fault mes-
sages are transmitted, the display also indicates the
tripped protection function. If, for example an overcur-
rent occurs, first the respective phase LED will light up.
LED I> lights up at the same time. After tripping the
LEDs are lit permanently.