Manual MRIK3-C EN
Woodward
DOK-TD-MRIK3-C Rev. A
19
5.3.3
„AR-ready“
The relay MRIK3-C is in position "AR-ready" status when the following conditions are fulfilled:
The circuit breaker is in position "ON",LED CB emit red light
the reclaim time has expired,
the unit is not in "blocked" status,
the unit is not in "starting cycle" status.
Only in "AR-ready" status a reaction of the AR-unit to the protection incidents is possible!
5.3.4
„AR-starting“ (dead time)
In "AR-starting" status the start conditions for an automatic reclosing by means of the protection
commands and the circuit breaker position are checked.
5.3.5
„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 evaluated accordingly.
5.3.6
„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. 6.12.4). No auto reclosing is
possible in "AR-blocked" status.
5.3.7
„Fast
Trip
Mode“
By way of the function "Assignment of the AR functions" it is possible to activate or deactivate a
Fast Trip function for each AR stage and for each protective function. This is applicable for tripping
before the 1
st
AR up to tripping after the last AR. (see chapter 6.12.3)
5.3.8
„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 tripping before the 1
st
AR up to tripping
after the last AR. (see chapter 6.12.3)
5.3.9
„Activating of AR“
Prior to every AR it is possible to stipulate which kind of tripping (I> or I>>, etc.) will lead to auto-
matic reclosing. This can be separately fixed for each AR stage. (see chapter 6.12.3)
