Cb Monitoring - ABB Eagle Programming Manual

I inr max 10 ... 7500

4.4.3. CB Monitoring

The module is activated whenever the Circuit Breaker (CB) is opened or closed
When the CB is opened either due to a protection trip or from a manual open command,
the module adds the magnitude of current at the instance of CB opening, to the KSI open
counter. The current is normalized to 100A before adding to the counter. Fractions of less
than 100A are round to the closest multiple of 100 A.
Similarly, when the CB is closed, the module adds the closing current (normalized to 100A),
to the KSI close counter. During the close operation, the module considers the current
40ms to 50ms after the CB close.
The updated KSI open and close counter values are available as a monitoring value over
WEB-HMI.
The open and close KSI counters can be initialized to a pre-defined start value through the
settings KSI open and KSI
0
reset and the accumulation will continue from the set initial values.
KSI open alarm activates when the KSI open counter has exceeded the setting KSI open
alarm value. Similarly, KSI close alarm is activated when the KSI close counter has exceeded
the setting KSI close alarm value
Parameter Range
KSI open 0 ... 99999
0
KSI close 0 ... 99999
0
KSI open alarm 0 ... 99999
value
KSI close alarm 0 ... 99999
value
A 1 7500
close. As soon as a new setting is saved, the function will get
0
Table 6 User settings
Unit Step
- 1
- 1
- 1
- 1
Current value above which inrush detection
is ignored.
Default Description
0 Preset KSI open counter value
0 Preset KSI close counter value
10000 Alarm limit for KSI open
counter value
10000 Alarm limit for KSI close
counter value
24