Siemens SIPROTEC 7SD610 - Connection Examples; Current Transformer Connection Examples; A.3 Connection Examples

A Appendix
374
7SD610 Manual
C53000-G1176-C145-4
A.3 Connection Examples
A.3.1 Current Transformer Connection Examples
Figure A-3 Current connections to three current transformers with a starpoint
connection for earth current (residual 3I0 neutral current), normal
circuit layout
Figure A-4 Current connections to three current transformers with separate earth
current transformer (summation current transformer or toroidal current
transformer)
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