ABB REX 521 Technical Reference Manual, Standard Configurations page 200

REX 521 Protection Relay 1MRS 751802-MUM
Technical Reference Manual, Standard Configurations
The function can deliver the alarm signal "PQ 3Unf cum", an output signal for
exceeding a setting limit for cumulative probability of a harmonic and the
"PQ 3Unf har", an output signals for exceeding a setting limit for a harmonic. The
alarm signals can be routed to the output contacts via the switchgroups. The
connection settings can be made in Main menu\Configuration\Output
SWGRP\Alarm 1\ or \Alarm 2\. The "Alarm 1" or "Alarm 2" output signal
can be then connected to an output relay and the settings are done in
Main menu\Output Signals\.
Please refer to the CD-ROM Technical Descriptions of Functions (PQCU3H) for
more information about the power quality function.
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