Siemens SIPROTEC 4 User Manual page 589

[spannungswdl-verkettete-ss-spg-20070416, 1, en_US]
Figure C-15
The terminal markings in brackets apply to the devices 7SJ623/4/5/6, the remaining to devices 7SJ64
[2-verkettete-spg-3stern-e-n-wickl-20070416, 1, en_US]
Figure C-16
SIPROTEC 4, 7SJ62/64, Manual
C53000-G1140-C207-8, Edition 08.2016
C.3 Connection Examples Voltage Transformers 7SJ623, 7SJ624, 7SJ625, 7SJ626, 7SJ64
Voltage connections to three wye-connected voltage transformers and additionally to any
phase-to-phase voltage (for synchronism check for example)
Voltage transformer connections of two phase-to-phase voltages in open delta voltageconnec-
tion. In this connection, determination of zero-sequence voltage V0 is not possible. Functions
using zero-sequence voltage must be disabled.
Connection Examples
589