Application - ABB REX 521 Technical Reference Manual, Standard Configurations

1MRS 751802-MUM
3.3.3.2.
Protection Relay
Technical Reference Manual, Standard Configurations

Application

The H03 standard configuration for the REX 521 is designed to be used in single
busbar systems using one circuit breaker for selective non-directional short-circuit
protection, non-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 please refer to the
application example of the standard configuration H03 on page 179.
REX 521
39