![Entec EVRC2A-N6-NT Скачать руководство пользователя страница 120](http://html.mh-extra.com/html/entec/evrc2a-n6-nt/evrc2a-n6-nt_user-manual_2414428120.webp)
RECLOSER CONTROL EVRC2A-N6,NT
http://www.entecene.co.kr
110
EN
HANCED
TEC
HNOLOGY
5-Reclosers Loop control at F2 Fault
Figure 6-9. 5-Reclosers Loop Control at F2 Fault
Step1 : When Permanent Fault occurs at F2, SEC(RC1) operate reclosing sequence and tirp
lockout. During SEC(RC1) operation, accumulate Dead line time, and the accumulated
Dead line time becomes “DL Pick T”. When the line is Dead Line, “LL Regain T”
operates.
“DL Pick T” is set by summing all reclosing time of back line equipment.
MID, TIE point recloser has the same setting time.
Step2 : “LL Regain T” is set, and if the line is not becoming Live line within a set time,
MID(RC2), TIE(RC3) operate. To operate “LL Regain T” from MID
→
TIE in turn, TIE
shall have longer time set than MID.
When “LL Regain T” is enable, MID(RC2) changes to Alternate setting automatically.
Step3 : When “LL Regain T” is finished, TIE(RC3) automatically close after changing to
Alternate setting.
Step4 : When closing TIE(RC3), MID(RC2) trip once and lockout because of F2 fault.
F2 is isolated by Loop control operation, the rest of region shall be alive by backward
distributing line.
Step5 : After removing a Fault, close SEC(RC1), then, MID(RC3) automatically changes to
Alternate setting after Auto Restoration Time.
Step6 : Manually open TIE(RC3) and change to Primary setting.
Enable Loop control of TIE(RC3) to recover the line as previous normal line.