Appendix
A.3 Connection Examples
SIPROTEC, 7SK80, Manual
E50417-G1140-C344-A5, Release date 11.2012
431
Figure A-11 Current transformer connections to three current transformers - ground current from additional
cable-type current transformer for sensitive ground fault detection
Important: Grounding of the cable shield must be effected at the cable side
Note: The switchover of the current polarity (address 201) also reverses the polarity of the current input INs!
Figure A-12 Transformer connections to three current transformers and three voltage transformers
(phase-to-ground voltages), normal circuit layout – appropriate for all networks
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