Siemens Siprotec 7VK61 Manual page 278

Breaker management device
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Appendix
A.3 Connection Examples
Figure A-10
278
Voltage connections to three star-connected voltage transformers with additional open-delta
windings (da–dn–winding, for voltage protection, voltage sum monitoring – not available for
snychronism check applications
SIPROTEC, 7VK61, Manual
C53000-G1176-C159-3, Release date 05.2009

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