8–32 850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
BREAKER FAILURE (50BF) CHAPTER 8: CONTROL
Initiate
Path: Setpoints > Control > Breaker Failure 1(X) > BF1(X) Initiate
EXTERNAL INITIATE
Range: Off, Any FlexLogic operand
Default: Off
The setpoint selects the FlexLogic operand that initiates the Breaker Failure scheme;
typically the trip signals from external devices.
FAST PATH:
The trip signals from internal protection functions may be used with the help of FlexLogic,
but for easier setting the Breaker Failure function is provided with a BF1 INITIATE submenu.
INITIATE IN1(15)
Range: Off, Any FlexLogic operand
Default: Ph TOC 1 OP
The setpoint selects the FlexLogic operand that initiates the Breaker Failure scheme;
typically the trip signals from internal protection functions.
FAST PATH:
The default setting includes the following protection functions:
Ph TOC 1 OP
Ph TOC 2 OP
Ph IOC 1 OP
Ph IOC 2 OP
Ntrl TOC 1 OP
Ntrl TOC 2 OP
Ntrl IOC 1 OP
Ntrl IOC 2 OP
GND TOC 1 OP
GND IOC 1 OP
NOTE:
For 850-P with 4 CT banks, the default setting for IN9 and IN10 is Off.
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