
Multi-Function Control ETMFC610
http://www.entecene.co.kr
103
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HANCED
TEC
HNOLOGY
Loop control with F2 Fault
Figure 7-9.
Loop Control with F2 Fault
Step1 : At F2 location, when Permanent Fault occurs, RC1 conducts reclosing cycle.
AS2 counts
“SEC Operate Cnt”
when Dead line Voltage after sensing a Fault.
When RC1 trips two times, it reaches
“SEC Operate Cnt”
set value (2).
Then F2 location is disconnected after
“SEC Oper’ TD”
Timer is finished.
AS1 is not operating because that
“SEC Operate Cnt”
is set for 3
AS3 is not operated because AS3 did not sense the fault.
Step2 : AS2 is opened and RC1 is closed after two times of reclosing.
RC1 is closed after AS2 disconnect F2 location, and keep the rest of line normal.
Step3 : After removing the Fault, manually (local or remote) close AS2 and recover live line.