Siemens SIPROTEC 4 User Manual page 352

Functions
2.26 Protection for Single-phase Voltage Transformer Connection
Undervoltage 27-1:
[einphasenanschluss-beispiel-220802-kn, 1, en_US]
Figure 2-151
Apply the following settings to the device:
Address 202 Vnom PRIMARY
Address 203 Vnom SECONDARY
Address 240 VT Connect. 1ph
[einstellbeispiel-einphas-anschluss-220802-kn, 1, en_US]
352
Example of a single-phase voltage transformer connection (phase-to-ground)
to 60 % V
Nom
= 138 kV
= 115 V
= Van
C53000-G1140-C207-8, Edition 08.2016
SIPROTEC 4, 7SJ62/64, Manual