Implementations; 1.Disturbance Recorder; 2.Power Quality - ABB REX 521 Technical Reference Manual, Standard Configurations

1MRS 751802-MUM
11.6.5.
11.6.5.1.
11.6.5.2.
Protection Relay
Technical Reference Manual, Standard Configurations
Main menu\Configuration\Input SWGRP\
Main menu\Configuration\Output Signals\
Main menu\Configuration\Output SWGRP\.

Implementations

In the sections below a few implementation examples for the standard configuration
H06 are presented.
Disturbance recorder
The disturbance recorder (DREC) can be found in
Main menu\Measurement\DREC\. All of the measured voltage signals as well
as all of the start signals from the protection functions and the Trip 1, Trip 2 and
Trip 3 signals are connected to the DREC in the H06 standard configuration.
The recording can be triggered by any of the alternatives listed below:
• triggering on the rising or falling edge of the protective start signals
• triggering on voltage measurement
• manual triggering via the HMI or with the external input signal
• triggering via communication parameter
• periodic triggering
Regardless of the triggering type, each recording generates the event E31. The
triggering time and reason are included in the recording. Number of recordings can
be viewed in Main menu\Measurements\DREC\Control setting\
# records.
External triggering can be made by means of the reserved input signal "DREC trig"
connected to one of the digital inputs. The settings can be found in
Main menu\Configuration\Input Signals\DREC trig.
Please refer to the CD-ROM Technical Descriptions of Functions (MEDREC16) for
more information about the disturbance recorder.
Power quality
The power quality function (PQ 3Unf) can be found in Main menu\Power
Quality\PQ 3Unf. The function is used for measuring the harmonics and
monitoring the power quality in distribution networks.
The power quality function can be triggered by any of the alternatives listed below:
• manual triggering via the HMI
• with the external input signal
• triggering via communication parameter
• preset time and date
External triggering can be made by means of the reserved input signal
"PQ 3Unf trig" connected to the digital inputs. The settings can be found in
Main menu\Configuration\Input Signals\PQ 3Unf trig.
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