ABB RED650 Applications Manual page 269

1MRK 505 393-UEN B
Line differential protection RED650 2.2 IEC
Application manual
interlocking conditions are evaluated with separate logic and connected to
SCILO .
• The Synchrocheck, energizing check, and synchronizing (SESRSYN)
calculates and compares the voltage phasor difference from both sides of an
open breaker with predefined switching conditions (synchrocheck). Also the
case that one side is dead (energizing-check) is included.
• The Generic Automatic Process Control function, GAPC, handles generic
commands from the operator to the system.
The overview of the interaction between these functions is shown in Figure
below.
Section 12
Control
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