Siemens SIPROTEC 4 7VK61 Manual page 274

Connection Examples
C.2 Voltage Transformer Connection Examples
Irrespective of the connection type of the primary side, a single-phase voltage transformer must always be
connected on secondary side to the first of the three-phase voltage inputs (R15/16) of the 7VK61!
[spgw-anschluss-einphasig-ll-spg-121102-kn, 1, en_GB]
Figure C-4
[anschl-beisp-spgw-anschl-normalanschl-121102-kn, 1, en_GB]
Figure C-5
274
Connection circuit for single-phase voltage transformers with phase-to-phase voltages (for the
control of synchronism check with single-phase dead-line check, limited operational measure-
ment)
Voltage connections to three star-connected voltage transformer (normal circuit layout, for
voltage protection, operational measurement) – not available for Synchronism check applica-
tions
SIPROTEC 4, 7VK61, Manual
C53000-G1176-C159-5, Edition 05.2018