ABB RELION REB500 Technical Manual page 154

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