ABB REL 551 2.3 Series - Current Circuit Supervision (CTSU)

87
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Prepare the terminal for verification of settings as outlined in section “Preparing for
test” in this chapter.
The current circuit supervision function is conveniently tested with the same 3-phase
test set as used when testing the measuring functions in the REx 5xx.
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The output signals shall reset with a delay of 1 s when the current
exceeds 1.5·I1b.
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