ABB REX 521 - Page 174

174
1MRS751802-MUM
Protection Relay
Technical Reference Manual, Standard Configurations
REX 521
Fig. 10.1.1.-2 Connection overview diagram of the outgoing feeder
REX 521
CB
DC ES
0 1
5
0,2
v
100V
Uo
b
da
dn
A
N
Overcurrent TRIP Alarm
Circuit-breaker failure
protection
Blocking signal to incoming
feeder (START 3I>>)
TRIP circuit breaker
CLOSE circuit breaker
Internal relay fault
Earth-fault TRIP Alarm
Control signal for selecting
the basic angle of Io>-->
(BACTRL)
OverviewOutgM01