Application - ABB REX 521 Technical Reference Manual, Standard Configurations

REX 521
3.2.1.2.
24
Protection Relay
Technical Reference Manual, Standard Configurations

Application

The M01 standard configuration for the REX 521 is designed to be used in single
busbar systems using one circuit breaker for selective short-circuit, time overcurrent
and directional earth-fault protection of radial isolated neutral networks, solidly
earthed networks, resistant earthed networks and resonant earthed networks.
For more detailed information about the configuration please refer to the application
examples of the standard configuration M01 on pages 143 and 150.
1MRS 751802-MUM