Siemens SIPROTEC 7SJ62 Manual page 603

Figure A-45
Figure A-46
SIPROTEC, 7SJ62/64, Manual
C53000-G1140-C207-2, Release date 01.2008
Voltage transformer connections of two voltage transformers in V-connection.
In this connection, determination of zero-sequence voltage V0 is not possible.
Functions using zero-sequence voltage must be disabled.
Voltage transformer connection only to open delta VT
Appendix
A.3 Connection Examples
603