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Set the trip level to the minimum range of the setting, and the timing to instantaneous
mode (all switches to the left). Establish the connections as indicated in figure 10,
including the chronometer. Apply the rated voltage to the relay. Apply to points X and Y a
voltage higher that the trip level in the case of an overvoltage relay, and lower than the
trip level in the case of an undervoltage relay.
Check that the time indicated by the chronometer is less that 50 ms.
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Apply a fault and check that the results are in accordance with the following table:
SWITCHES TO RIGHT (SW2)
1 (top)
None
GEK-98834B
2
4
8
Tmin (ms)
Tmax (ms)
123
218
788
12158
30
23
157
242
872
13441
40
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