POWERSYS RECLOSER, Manual

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- “Tie SW open time”
This is the time required to open a “Tie Sw open” in order to repair the distribution lines
to the normal state, if power is supplied from both Tie Sw after the fault is recovered.
- “Tie Sw Source”
It is used to determine the conditions of Tie Sw closing.
BOTH : If any loss for both side, it operates after Tie Sw closing time.
ABC : ABS side is power side, and when RST side is de-energized, then it closes after the
close time.
RST : RST side is power side, when RST side is de-energized, then it closes after the close
time.
Loop Operation procedure
Tie
REC
MID
REC
Feeder
REC
CB CB
1) Feeder recloser trips when the voltage at power supply side is lost.
2) Mid recloser changes to Alt group setting when the voltage of power supply and load
side is dead due to the trip of protection device at power supply, and also changes to
the single shot mode which does not operate reclosing.
3) Tie recloser closes if one side voltage is lost.
4) Feeder recloser closed when the voltage at power supply become live after it is
repaired.
5) Mid recloser closes when the voltage is supplied to both side.
6) Tie recloser opens when the voltage is supplied to both ends.
<Table 5-5> Auxiliary Function
Category Item Range Default Step Unit Explanation
Open Line
Detect
Volt On 50~90 90 1 %
Voltage setting to reset phase
loss(standard on rating voltage)
Volt Off 35~75 75 1 %
Voltage setting to set phase
loss(standard on rating voltage)
Delay Off 0.1~30 30 0.1 sec
If voltage is kept under volt off
during delay time
Use Func NO/YES YES
Show whether open line detect
function is available
Sync Check
Phase Off 5~60 5 1 ° degree setting to check phase sync
Delay Time 0.1~30 30 0.1 sec delay time setting to check phase sync
Use Func NO/YES YES
Show whether sync check function is
available
Live Line
Detect
Volt Level 10~90 30 1 % Set voltage level monitoring operation
Detect Time 0.05~1 0.10 0.01 sec Set voltage level operating time
Negative
OC
I2/I1 Pickup 30~100% 50 1 % Set negative current operating level
Delay Time 0.1~10 10.0 0.1 sec Set negative OC operation time
I1 Threshold 5~200 10 1 A Set Positive current threshold value
2
nd
Harmonic Blk OFF/ALM/TRIP OFF Select 2nd Harmonic block/ non-block
Func In Use OFF/ALM/TRIP OFF
Set negative OC fault operation
functions, No Use/Alarm/Trip