Protection Functions
PRS-7367 115
Binary input of circuit breaker in healthy condition
The position indication of the circuit breaker, normally closed.
The position indication of the circuit breaker, normally open.
Tripping circuit breaker by instantaneous tripping protection
Tripping circuit breaker by delay time tripping protection
Synchronizing OK signal from 25SYN
Table 3.22-2 Output Signals
Automatic reclose is enabled
Automatic reclose is blocked
Automatic reclose is out of service
Automatic reclose is ready for reclosing cycle
Automatic reclosing is active
AR is in progress for first shot
AR is in progress for second shot
AR is in progress for third shot
AR is in progress for forth shot
Close command for circuit breaker
Re-closing condition checking fail signal
The first shot reclosing attempts
The second shot reclosing attempts
The third shot reclosing attempts
The forth shot reclosing attempts
Automatic reclosing is successful
Automatic reclosing is unsuccessful
Block Instantaneous Protection trip
3.22.2 Operation Principle
This auto-reclosing logic can be used with either integrated device or external device. When the
auto-reclose is used with integrated device, the internal protection logic can initiate AR, moreover,
a tripping contact from external device can be connected to the device via opto-coupler input to
initiate integrated AR function.
3.22.2.1 Enable AR (AR ON)
AR function can be enabled by internal logic settings of AR mode or external signal via binary
inputs in addition to internal logic setting 79AR_Enable. When the setting 79AR_ExtCtrl is set as
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