ABB REL 551 2.3 Series Installation And Comissioning Manual page 90

Line differential protection terminal
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84
Broken conductor check (BRC)
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Prepare the terminal for verification of settings as outlined in section "Preparing for
test" in this chapter.
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Values of the logical signals belonging to the broken conductor
check function are available under menu tree:
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Observe the maximum permitted overloading of the current cir-
cuits in the terminal.

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Use the BRC--TRIP signal from the configured binary output to
stop the timer.

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No BRC--TRIP signal should appear.

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No BRC--TRIP signal should appear.
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