Digital Input Test - ABB REU 610 Operator's Manual

1MRS755770
5.5.
5.6.
5.6.1.
Voltage Protection Relay
Operator's Manual

Digital input test

This section describes how the availability of signals connected to the digital inputs
can be tested.
To monitor the status of the digital inputs, navigate in the HMI menu as follows:
1. Press an arrow button to access the main menu.
to select CONFIGURATION in the main menu and press
2. Use or
cursor is at the first menu item, FUNCTION TEST/DI. Press
the test menu.
to select DI STATUS and press
3. Use or
4. Use and to monitor the state of the other four digital inputs.
5. Press to return the display to the idle mode.
It is also possible to read the state of the digital inputs via serial
communication.
Testing protection functions
The maximum continuous voltage withstand 2 × U
maximum of 10 seconds) must not be exceeded.
The overvoltage and residual voltage protection functions in the relay can be tested
with the setting values used during normal operation. If other settings are used
during testing, make sure that the original settings are re-entered after the test is
completed.
The test is performed as a secondary test, by applying voltage to the voltage
energizing inputs. To enable secondary testing without accidentally blocking other
relays or tripping circuit breakers in the system, the relay has to be disconnected.
Testing overvoltage protection
During the test, the overvoltage protection stage U>> should be set to
be based on phase-to-phase voltage measurement.
REU 610 REU 610
. The
again to enter
to see the status of DI1.
(3 × U for
n n
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