8
TB MRIK3 12.00 E
Figure 3.5: Front panel
MRIK3-I
Figure 3.6: Front panel
MRIK3-IE
3.2
LEDs
Five pushbuttons for control and/or adjustment and up
to 21 LEDs are on the front plate of unit
MRIK3
. The
LEDs on the left side of the display indicate the status,
fault messages and AR- results. The function of the re-
spective LED is indicated by the legend above the LED.
The LEDs on the left side beneath the <SELECT/RESET>
pushbutton are provided for adjustments, their functions
are shown with a legend on the right or left side of the
LED.
3.2.1
Indication-LEDs
L1, L2, L3, E: Phase or earth current
O
→
I
green: AR successful; red: AR unsuccessful
OK:
AR ready (Does not light: AR inactive)
AR:
AR status
CB:
Circuit breaker on
RS:
Setting slave address
3.2.2
Setting-LEDs
P2:
Two parameter sets
I>:
green, pickup value phase current
tI>:
red, trip delay / time multiplier
phase current
I>>:
green pickup value phase current
tI>>:
red, trip delay phase current
IE>:
green, pickup value earth current
tIE>:
red, trip delay / time multiplier earth
current
IE>>:
geen, pickup value earth current
tIE>>:
red, trip delay earth current
CHAR
green, tripping characteristic phase
and earth path
tRST:
red, reset time phase and earth
SHOT:
green, number of the reclosing attempts
t
F
:
red, Fault time
t
D1
:
green, Dead time for the first reclosing
attempt
t
D2
:
red, Dead time for the second reclosing
attempt
t
D3
:
green, Dead time for the third reclosing
attempt
t
D4
:
red, Dead time for the fourth reclosing
attempt
t
C1
:
green, Close impulse time
t
R
:
red, Reclaim time
C.B.:
Time delay of circuit breaker failure
protection
