ABB REX 521 - Application

36
1MRS751802-MUM
Protection Relay
Technical Reference Manual, Standard Configurations
REX 521
H01
Fig. 3.3.1.1.-1 Block diagram of standard configuration H01
3.3.1.2. Application
The H01 standard configuration for REX 521 is designed to be used in single busbar
systems using one circuit breaker for selective directional and non-directional short-
circuit protection, directional time-overcurrent protection, directional earth fault
protection and automatic reclosing with synchro- and voltage-check functionality.
For more detailed information about the standard configuration, refer to the
application example of the standard configuration H01 on Section 11.1. Incoming
feeder, High H01.
3I>
67
I >
0
67N
49F
3
3I >
2f
68
I >
46
0
I
79
LO
86
SYNC
25
f
P
3U
3I
I
0
U
0
Q
E
pf
TCS1
CBCM
0
I
MCS
3I~harm
000
R
3U~harm
CBFP
*/62
3I>
50
REX 521 H01