CB1 control logic
GUID-8C90B832-96F9-4E2F-BF1F-5CACEB75E09D V1 EN
Figure 351: Sub module diagram for CB1 control logic
Operation of the output signals is described in the table.
Table 674: Operating conditions for output signals of CB1
Output signal
Operation description Operation type
OPEN_CB1
If bus 1 is faulty and the CB1
position is closed, OPEN_CB1 is
activated after
CB1 Trip delay
has expired.
Protection
Setting
Main bus priority
= “bus
2”.
If CB1 position is closed and bus
2 is healthy, OPEN_CB1 is
activated after
Open CB1 delay
has expired.
Automatic reconnection
CLOSE_CB1
Setting
Main bus priority
= “bus
1”.
If both CB1 and CB2 are open,
and bus 1 is healthy,
CLOSE_CB1 is activated after
Close CB1 delay
has expired.
Operation is independent of the
state on bus 2.
Automatic reconnection
Setting
Main bus priority
= “bus
2”.
If both CB1 and CB2 are open,
bus 2 is faulty and bus 1 is
healthy, CLOSE_CB1 is
activated after
Close CB1 delay
has expired.
Automatic transfer
Activation of BLOCK input deactivates the outputs and resets the timers.
Section 9 1MRS758755 A
Control functions
668 REC615 and RER615
Technical Manual
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