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Frequency protection Chapter 11
Verifying settings by secondary
injection
Extended testing
Procedure
1. The test above can be repeated to check a positive setting of Start-
FreqGrad
.
2. The tests above can be repeated to check the time to reset.
3. The tests above can be repeated to test the RESTORE signal, when
the frequency recovers from a low value.
8.3.2 Completing the test
Continue to test another function or end the test by changing the test mode setting to off. Restore
connections and settings to their original values, if they were changed for testing purposes.
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