Siemens siprotec 7SJ63 - Page 277

Functions
6-1137SJ63 Manual
C53000-G1140-C120-1
Figure 6-49 Typical Fault Profile for Source Side Connection of the Voltage Transformer
Figure 6-50 shows a fault profile for a load side connection of the voltage transformers.
When the circuit breaker is open, the voltage disappears and the 27-1 element picks
up and times out. When the current drops below the current flow monitoring setting at
address  (i.e. the current criterion is no longer met) the 27-1 element will drop out
even though the voltage remains below the pick-up setting of the 27-1 element.
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