Completing The Test - ABB ProtectIT REL 551 2.5 Installation And Commissioning Manual

Differential protection terminal
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28.1.4
152
Sudden change in phase current
protection (SCC1)
5.
Measure the time between the change in current and the
SCC1_START (SCC1_TRIP) signal.
6.
Compare the measured time with the set values tHStart and tHTrip.
7.
Repeat item 11-16 for the other two phases.

Completing the test

Continue to test another function or complete the test by setting the test mode off.
Chapter 13
Verifying settings by secondary
injection

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