Binary Input Test; Led Test; Secondary Injection Testing - ABB REJ 525 Operator's Manual

1MRS 752137-MUM
5.2.2.
5.2.3.
5.3.
Combined Overcurrent and Earth-Fault Relay
Operator's Manual
The table below shows the activation order and the corresponding digit flashing
when a signal is being tested.
Table 5.2.1-1 Function test
Number Function
1 I>
2 t>
3 I>>
4 t>>
5 I >
0
6 t >
0
7 I >>
0
8 t >>
0
∆I>
9
10 t∆>
0 IRF

Binary input test

To monitor the status of the binary input, navigate in the HMI menu as follows:
1. Select "FUNCTION TEST/BI" under "CONFIGURATION" in the main menu.
2. Select "BI STATUS" and the state of the binary input will be shown.
It is also possible to read the state of the binary input via SPA parameter I5.

LED test

The LED test is accessible via "FUNCTION TEST/BI" under
"CONFIGURATION" in the HMI menu. All the LEDs not already lit can be lit in
the test mode.
1. Enter the test mode by pressing the [E] button and the text "LED-TEST" will be
flashed on the display.
2. To activate the LEDs not already lit, press the [E] button. The LEDs will remain
lit for as long as the [E] button remains pressed.
3. To quit the test mode, press the [C] button.
The LED test can also be performed using SPA parameter V166.

Secondary injection testing

When the auxiliary voltage is connected to the protection relay, it will perform a
self-testing program. This, however, does not include the matching transformers and
the output contacts. The operational condition of the relay is tested by means of
ordinary relay test equipment. Such a test also includes the matching transformers,
output contacts and the accuracy of the operate values.
According to the manufacturer's recommendations, the relay should be submitted to
secondary testing at five years' intervals to ensure proper operation. The testing
should include the entire protection chain from the measuring transformers and
should always be performed in accordance with national regulations and
instructions.
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