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