18000052-IEC19000457-1-en.vsdx
Tri p CB
Start
Close CB
ZExtension
Def. Trip
First AR 1P
Trip CB 3P
AR in Prog.
AR Ready
AR Blocked
t Dead1 1P
time < t Oper.
Trip 3- Pol
t Discrim. 1P
Trip CB
Start
Close CB
ZExtension
Def. Trip
First AR 1P
Trip CB 3P
AR in Prog.
AR Ready
AR Blocked
t Inhibit.
t Dead1 1P
time < t Oper.
Trip 3- Pol
t Discrim. 1P
Unsuccessful AR
Successful AR
t Close
300 ms
IEC19000457 V1 EN-US
Figure 53: Timing diagram for a single or double busbar arrangement with one distance
and one AR function >> Response for ground fault
Settings:
•
1. AR Mode = 1P-1P or 1P3P-1P3P
•
2..4. AR Mode = off
•
ZE Prefault = on
•
ZE 1. AR = off
Section 5
1MRK 505 406-UEN B
Bay protection functions
148
Bay protection functions REB500
Technical manual
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