Appendix
A.3 Connection Examples
SIPROTEC, 7SC805, Manual
C53000-G1140-C380-1, Release date 05.2014
132
Figure A-4
Current transformer connections to three current transformers, ground current from an
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-5
Transformer connections to three current transformers and three voltage transformers
(phase-to-ground voltages), normal circuit layout – appropriate for all networks