A070974 V3 EN
Figure 97: Incorrect testing of IEDs
7.2 Current circuit supervision CCRDIF
7.2.1 Identification
Table 79: Function identification
IEC 61850 identification:
CCRDIF
IEC 60617 identification: MCS 3I
ANSI/IEEE C37.2 device number: MCS 3I
7.2.2 Functionality
The current circuit supervision function CCRDIF is used for monitoring current
transformer secondary circuits.
CCRDIF calculates internally the sum of phase currents (I_A, I_B and I_C) and
compares the sum against the measured single reference current (I_REF). The
reference current must originate from other three phase CT cores than the phase
Section 7 1MRS756378 D
Supervision functions
194 REF615
Application Manual
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