Measurement Connections; Protection - ABB REX 521 Technical Reference Manual, Standard Configurations

1MRS 751802-MUM
9.2.2.
9.2.3.
Protection Relay
Technical Reference Manual, Standard Configurations

Measurement connections

The three-phase current transformers are connected to the connector X1.1 on the rear
panel. The rated currents of the measuring input are 1 A and 5 A.
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The technical data of the current transformers are set via the Relay Setting Tool or
the local HMI. The settings can be found in
Main menu\Configuration\Meas. devices\. Please refer to Technical
Reference Manual, General (1MRS 751108-MUM) for further information about
how to set the rated currents.

Protection

All the necessary settings for the protection functions can be set by means of the
Relay Setting Tool or the local HMI. The settings can be found in
Main menu\Protection\.
REX 521
REX 521
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