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TB MRI(K)3-C 03.02 E
4.3.5 „AR-cycle“ (auto reclosing)
The reclosing commands are carried out in "AR-cycle"
status by means of the conditions and the presetting.
The results (AR successful or unsuccessful) are evalu-
ated accordingly.
4.3.6 „AR-blocked“
Unit
MRIK3-C
changes immediately to "AR-blocked"
status when an external or internal blocking signal
(A2-A3) exists. (activation via assigned digital input,
see Chap. 5.11.4). No auto reclosing is possible in
"AR-blocked" status.
4.3.7 „Fast Trip Mode“
By way of the function "Assignment of the AR functions"
it is possible to activate or deactivate a Fast Trip func-
tion for each AR stage and for each protective func-
tion. This is applicable for tripping before the 1
st
AR up
to tripping after the last AR. (see chapter 5.11.3)
4.3.8 „Blocking mode“
By way of the function "Assignment of the AR functions"
it is possible to activate or deactivate a protection
function for each AR stage. This is applicable for trip-
ping before the 1
st
AR up to tripping after the last AR.
(see chapter 5.11.3)
4.3.9 „Activating of AR“
Prior to every AR it is possible to stipulate which kind
of tripping (I> or I>>, etc.) will lead to automatic re-
closing. This can be separately fixed for each AR
stage. (see chapter 5.11.3)
4.3.10 Description of the status transition
to
from
inactive
reclaim time
ready
starting
(dead time)
cycle (auto
reclosing)
blocked
inactive
C.B. manual
ON
external block-
ing signal
reclaim
time
reclaim time
expired
external block-
ing signal
ready
C.B. OFF
protection ener-
gized and/or
tripped and C.B.-
energy OK
external block-
ing signal
starting
starting
conditions not
fulfilled
start signal
interrupted
start condi-
tions fulfilled
(fault time,
C.B. OFF
etc.)
external block-
ing signal
cycle
AR takes place
external or in-
ternal blocking
signal
blocked
external
reset of
blocking
Table 4.1: AR-status transition matrix
From Table 4.1 you can detect what status transitions
of
MRIK3-C
are possible. When the unit is for instance
in "cycle" status (see also para. 4.3) only two status
transitions are possible:
•
status transition to "ready"-status when the auto re-
closing takes place
•
status transition to "blocked" status by external or
internal blocking.
The grey shaded sections indicate that no transition is
possible.
