ABB RELION REB500 Technical Manual page 157

1MRK 505 406-UEN B
Main protection 1, AR ready
T rip CB
Trip CB 3P
Start
Def. T rip
Close CB
Z Extension
First AR 1P
T rip 3- Pol
AR in Pro g.
AR R eady
AR Blocked
Main protection 2, AR blocked (
T rip CB
T rip CB 3P
Start
Def. Trip
Close CB
ZExtension
F irst AR 1P
T rip 3- Pol
AR in Pro g.
AR R eady
AR Blocked
IEC19000460 V1 EN-US
Figure 56: Timing diagram for scheme with main protections 1 and 2 (REB500sys), both
Settings:
• 1. AR Mode = 1P-1P or 1P3P-1P3P
• 2..4. AR Mode = off
• Zextension = on
• ZE 1. AR = off
Bay protection functions REB500
Technical manual
time < t Oper.
t clo se
t D iscrim. 1P
t De ad1 1P
because main protection 1 ready)
equipped with an autoreclosure function — Main protection 1 is in operation
>> Response for successful autoreclosure
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300 ms
t inhibit.
18000055-IEC19000460-1-en.vsdx
Section 5
Bay protection functions
151