Multi-Function Control ETMFC610 http://www.entecene.co.kr
7.1.4. Loop Control
The ETMFC610 supports the LOOP CONTROL function when the controller type is set to “Fault
Indication Type(FITYPE)”.
The purpose of using Loop Control is to keep the normal operation by isolating Fault Area as to
cooperate with Recloser or C/B when a fault has occurred.
Auto Sectionalizer(AS)
AS trips due to Fault current and Line Voltage.
When a fault has occurred in the load side of AS, C/B trips and High Voltage line becomes
Dead line Voltage(DV). Due to the number of Count, AS trips(is opened).
NOTE : The FI Type setting must be "IV" for correct Auto Sectionalizer operation (The
FI Type setting is located in the "Group Setting / Fault Indication / FI Type"
menu.).
Tie point Switch(TS)
TS is located at Open point and is used for bi-directional(reversed line direction) operation.
TS is operated due to Line Voltage.
Either Source side or Load side of TS, becomes Dead line Voltage(DV), TS operates(is
closed) depending upon the number of count.
When the source side and Load side become Dead line Voltage(DV), TS is automatically
opened.
TS must be cooperated with ENTEC Sectionalizing Recloser.
To prevent further fault, TS shall be operated after ENTEC Sectionalizing Recloser trips
and disconnects a fault area.
ETNEC Sectionalizing Recloser is automatically opened when Source side and Load side
become Dead line Voltage(DV) and it has the automatic closing function called Looping
control function When High Voltage line becomes Live line Voltage(LV).
Please refer to “7.1.4.3. Loop Control Application” for more detail information of loop control
function.
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