outgoing feeders, which in turn results in tripping of all circuit breakers of the
outgoing feeders.
Figure 395: Arc protection with several protection relays and a separate arc
protection system
4.9.6 Signals
Table 714: ARCSARC Input signals
Name Type Default Description
I_A SIGNAL 0 Phase A current
I_B SIGNAL 0 Phase B current
I_C SIGNAL 0 Phase C current
Io SIGNAL 0 Residual current
BLOCK BOOLEAN 0=False Block signal for all bi-
nary outputs
REM_FLT_ARC BOOLEAN 0=False Remote Fault arc de-
tected
OPR_MODE BOOLEAN 0=False Operation mode in-
put
1MRS757644 H Protection functions
620 series
Technical Manual
755
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