ABB RELION SMU615 Technical Manual page 148

Substation merging unit
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Supervision functions
Figure 97: Connection diagram for reference current measurement with core-
balanced current transformer
Current measurement with two independent three-phase sets of CT cores
Figure 98
is measured with two independent three-phase sets of CT cores.
148
Figure 99
and
show diagrams of connections where the reference current
1MRS758407 C
SMU615
Technical Manual

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