CHAPTER 7: RECORDS BREAKERS
845 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL 7–3
Breakers
Breaker Arcing Current
Path: Records > Breaker 1
ARCING CURRENT PHASE A
Range: 00.00 TO 42949672.95 Ka2-cyc in steps of 0.01
ARCING CURRENT PHASE B
Range: 00.00 TO 42949672.95 Ka2-cyc in steps of 0.01
ARCING CURRENT PHASE C
Range: 00.00 TO 42949672.95 Ka2-cyc in steps of 0.01
TOTAL ARCING CURRENT
Range: 00.00 TO 42949672.95 Ka2-cyc in steps of 0.01
Breaker Health
The menu displays the breaker monitoring values. The latest value, average of last five
values and average of values since last reset are recorded, calculated and displayed.
When the DETECTION mode is selected, the values displayed here can be used as the
reference for user settings. The values are saved into non-volatile memory to avoid the
loss of data during the power down period.
Path: Records > Breaker Health
Digital Counters
The present status of the sixteen Digital Counters is shown here. The status of each
Counter, with the user-defined Counter name, includes the accumulated and frozen counts
(the count units label also appears). Also included, is the date and time stamp for the frozen
count. The Counter microseconds frozen value refers to the microsecond portion of the
time stamp.
Path: Records > Digital Counter 1 (16)
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