Multi-Function Control ETMFC610
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HANCED
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Loop control with F3 Fault
Figure 7-14.
Loop Control with F3 Fault
Step1 : At F3 location, when Permanent Fault occurs, SR1 trips 4 times and locked out after
conducting reclosing cycle.
If SR1 trips two times, TS1 counts 2 and Close delay time runs.
While Close delay time of TS1 is operating, SR1 becomes Live line Voltage by reclosing,
and Close delay time is reset.
If SR1 trips three times, AS1 is automatically opened, TS1 counts 3, and it is more than
“TIE Operate Cnt”
2, so that Close delay time doesn’t run.
Step2 : After AS1 disconnects with F3, SR1 is reclosed and keeps the rest of live line normal.
Step3 : After removing the fault, close AS1 manually (local or remote) and recover live line.