GE 845 Instruction Manual page 225

CHAPTER 4: SETPOINTS
845 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
Path:
Setpoints > System > Breakers > Breaker 3
The logic of each breaker auxiliary contact: configuration and status, defines the Open,
and Close breaker status as shown in the tables below:
Table 4-35: Breaker status depending on availability of contacts 52a and 52b
52a Contact Configured
Yes
Yes
No
No
Table 4-36: Breaker status with both contacts 52a and 52b configured
52a Contact Status
Off
On
On
Off
BKR 1 (2, 3) NAME
Range: Up to 13 alphanumeric characters
Default: BKR1
BKR 1 (2, 3) CONTACT INPUT 52a
Range: Off, Any Contact Input
Default: Off
Selects the Contact Input connected to the Breaker auxiliary contact 52a.
BKR 1 (2, 3) CONTACT INPUT 52b
Range: Off, Any Contact Input
Default: Off
Selects the Contact Input connected to the Breaker auxiliary contact 52b.
BKR 1 (2, 3) CONNECTED
Range: Off, Any Contact Input
Default: Off
Select a contact input to show whether the breaker is connected (Racked-in, or
disconnect switches switched-on), or disconnected (racked-out, or disconnect switches
switched-off) from the system.
52b Contact Configured Breaker Status
Open
Yes 52a contact open
52b contact closed
No 52a contact open
Yes 52b contact closed
No Breaker Not Configured
52b Contact Status
On
Off
On
Off
Closed
52a contact closed
52b contact open
52a contact closed
52b contact open
Breaker Status
BKR Opened
BKR Closed
BKR Unknown State
BKR Unknown State
SYSTEM
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