3WL air circuit breakers
3.3 Metering functions
3WL/3VL circuit breakers with communication capability - PROFIBUS
System Manual, 03/2011, A5E01051353-02
47
Figure 3-10 Waveform acquisition of the metering function PLUS
The example in the figure shows the 3 phases L1, L2 and L3. It shows an event in waveform
buffer B with a 3-phase instantaneous short-circuit. You can see from the figure that the
short-circuit occurred at the time 10:05:58. Further, you can see that in L1 a maximum short-
circuit current of approximately 23 kA has arisen, and that the short-circuit has been
completely switched off after approximately 50 ms.
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