2.Indication And Control Connections; Implementations; 1.Blocking Signal Received From The Outgoing Feeder; 2.Outgoing Blocking Signal To The Overcurrent Relay On The Hv Side - ABB REX 521 Technical Reference Manual, Standard Configurations

REX 521
11.5.4.2.
11.5.5.
11.5.5.1.
11.5.5.2.
11.5.5.3.
11.5.5.4.
11.5.5.5.
192
Protection Relay
Technical Reference Manual, Standard Configurations
Indication and control connections
All the necessary settings for the indication and control signals of the circuit breaker
and the disconnector for the incoming feeder can be set as described in the first
application example on page 104 onwards for the outgoing feeder (except for the
earth-switch). The settings are made by means of the Relay Setting Tool or the local
HMI. The settings can be found in:
Main menu\Configuration\Input Signals\
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
H05 are presented.
Blocking signal received from the outgoing feeder
The blocking signal received from the outgoing feeder can be implemented as
described in the second application example (chapter 9.2.)
Outgoing blocking signal to the overcurrent relay on the HV side
The outgoing blocking signal to the overcurrent relay on the HV side can be
implemented as described in the second application example (chapter 9.2.)
Earth-fault stage Io>>> to trip the breaker on the HV side of the
transformer
The earth-fault stage Io>>> to trip the breaker on the HV side of the transformer can
be implemented as described in the second application example (chapter 9.2.)
Circuit-breaker failure protection
The circuit-breaker failure protection can be implemented as described in the second
application example (chapter 9.2.). CBFP function is not available for the
overvoltage and undervoltage protection.
Disturbance recorder
The disturbance recorder (DREC) can be found in
Main menu\Measurement\DREC\. All of the measured current and voltage
signals as well as all of the start signals from the protection functions and the Trip 1
and Trip 2 signals are connected to the DREC in the H05 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 current or voltage measurement
• manual triggering via the HMI or with the external input signal
• triggering via communication parameter
1MRS 751802-MUM