3-46
Breaker Logic
Date Code 20010731
SEL-352-1, -2 Instruction Manual
Figure 3.27: Breaker Alarm (BALRM) Logic
Remove any undesired breaker alarm condition from the BALRM setting to simplify the breaker
alarm report. The breaker alarms cannot be modified individually. See
Section 10: Event
Reports and SER
for information on the breaker alarm report using the
BRE
command.
FTRS: Failed CB trip resistors put in service
CAMT: Current after MOD Trip
FCRS: Failed CB close resistors put in service
MCC: MOD contradicts current
52ACV: 52A contradicts voltage
ST: Slow trip
CWO: Current while open
SC: Slow close
TWO: Trip while open
PTD: Potential Transformers Disagree
BDNC: Breaker did not close
Set a programmable output contact to close for indication when the relay detects a breaker alarm
condition. For example, set OUT101 = BALRM.
The following items explain conditions that cause BALRM assertion.
Failed CB Trip Resistors Put in Service
The FTRS bit asserts if any trip resistor thermal failure bit asserts and 86RS bit or close input
assertion occurs.
Figure 3.28: Failed CB Trip Resistors Put in Service
Содержание SEL-352-1
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