Siemens siprotec SJ62 User Manual page 603

A Appendix
601
Figure A-61 7SJ62: Current connections to three current transformers – core balance
neutral current transformers for sensitive ground fault detection.
Figure A-62 7SJ62: Current and voltage connections to three current transformers and three
voltage transformers (phase-ground), normal circuit layout – appropriate for all
networks
SIPROTEC 4, 7SJ62/63/64 Handbuch
C53000-G1140-C147-A, Edition 07.2015