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A.3
Connection Examples
Figure A-3
Current transformer connections to three current transformers and neutral point current
(ground current) (Holmgreen connection) – appropriate for all networks
Figure A-4
Current transformer connections to two current transformers – only for isolated or resonant-
grounded networks
SIPROTEC, 7SC80, Manual
E50417-G1140-C486-A1, Release date 12.2011
Appendix
A.3 Connection Examples
281
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