ABB RELION REB500 Technical Manual page 155

1MRK 505 406-UEN B
Successful AR
Trip CB
Trip CB 3P
Start
Def. Trip
Close CB
ZExtension
First A R 1P
First A R 3P
Trip 3-Pol
AR in Prog .
AR Ready
AR Block ed
Unsuccessful AR
Trip CB
Trip CB 3P
Start
Def. Trip
Close CB
ZExtension
First A R 1P
Trip 3-Pol
AR in Prog .
AR Ready
AR Block ed
IEC19000458 V1 EN-US
Figure 54: Timing diagram for a single or double busbar arrangement with one distance
Settings:
• 1. AR Mode = 1P3P-1P3P
• '2..4. AR Mode' = 'off'
• ZE Prefault = on
• ZE 1. AR = off
Bay protection functions REB500
Technical manual
(evolving fault du ring 't Di s crim1P')
time < t Oper.
t Discrim. 1P
t Dead1 1P
(evolving fault within 't Dead1 1P',
but after 't Di s crim1P')
time < t Oper.
t Discrim. 1P
t Dead1 1P
and one AR function >> Response for a ground fault which evolves
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t Close
300 ms
t Inhibit.
18000053-IEC19000458-1-en.vsdx
Section 5
Bay protection functions
149