ABB Relion 670 Series Application Manual page 54

Section 4
Analog and binary signal transfer for line differential protection
IEC10000237 V1 EN-US
Figure 53: Configuration of received signals
IEC10000238 V1 EN-US
Figure 54: Configuration of communication alarms
IEC10000239 V1 EN-US
Figure 55: Disconnection of analog signals for binary signal transfer set-up
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Communication set-up, 670/650 series
Application Guide