Appendix
A.3 Connection Examples
SIPROTEC, 7SD80, Manual
E50417-G1140-C474-A1, Release date 09.2011
346
Figure A-9 Current transformer connections to three current transformers, ground current from additional
summation current transformer – preferably for effectively or low-resistance grounded networks
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 IN!
Figure A-10 Example for the connection type "VAN, VBN, VCN" with voltage connection on the feeder side
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