Siemens SIPROTEC 7UM62 - A.3 Connection Examples

Appendix
A.3 Connection Examples
SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
553
A.3 Connection Examples
A.3.1 7UM62 - Connection Examples
Figure A-5 Busbar Connection
Current and voltage connections to three transformers (phase-to-ground voltages), and in each
case three CTs, earth current from an additional summation current transformer for sensitive
earth fault detection; detection of displacement voltage at broken delta winding (da–dn).