Testing Of The Self-Supervision System (Irf); Testing Of The Binary Input; Spare Parts - ABB REJ 527 Operator's Manual

1MRS 751055-MUM
5.2.4.
5.2.5.
5.3.
Directional or Non-Directional Earth-Fault Relay
Operator's Manual
SGR2 = 1
t > to PO1
0
SGR3 = 8 I >> to SO2
0
SGR4 = 2 t >> to PO2
0
SGF2 = 128 deblocking not in use
SGF3 = 5 non-directional
Setting values can be those actual used.
Low-set stage I >
0
Starting
Close switch S1 and slowly increase the test current until the relay starts and the
indicator I is lit. Then read the start current value from the ammeter.
0
Definite-time characteristic
1. Set the test current at 2 x the setting value of stage I
2. Switch off S1 and clear indicators and reset output relays. The clock is started
by closing switch S1 and stopped by closing output contact PO1.
When the relay starts, the START indicator on the front panel is lit with yellow light.
When the relay operates, the red indicator turns on.

Testing of the self-supervision system (IRF)

The self-supervision system and the function of the IRF LED and the IRF output can
be tested in the menu "Func.Test/BI"; refer to section 3.3.4. I/O test.

Testing of the binary input

Navigate in the MMI menu as follows:
1. Configuration
2. Func. Test/ BI
The last digit shows the state of the BI.
Another possibility is to read the state of the BI via the SPA parameter I5.

Spare parts

To achieve the best possible operation accuracy, all parts of the relay have been
calibrated together. Thus, each product forms a whole for which no separate spare
parts can be supplied. In case of malfunction, please consult your relay supplier.
REJ 527
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