Protection For Single-Phase Voltage Transformer Connection; Connection - Siemens siprotec SJ62 User Manual

2 Functions
2.24

Protection for Single-phase Voltage Transformer Connection

Applications

2.24.1 Connection

345
Devices 7SJ62/63/64 may also be connected to only one primary voltage transformer.
Impacts on protective functions to be taken into consideration are described in this
section.
• For some applications there is only one voltage transformer on the primary voltage
side. Usually it is a phase voltage. However, it may also be a phase-to-phase volt-
age. Via configuration the device may be adapted for such an application.
The device may optionally be supplied with a phase-ground voltage (e.g. V
phase-phase voltage (e.g. V
configuration (see Section 2.1.3.2) in parameter 240 VT Connect. 1ph. The follow-
ing figure shows a connection example. Further examples can be found in the Appen-
dix in Section A.3.
Figure 2-121 Connection example for single-phase voltage transformer for 7SJ62/63 with
phase-to-ground-voltage V
). The connection mode has been specified during the
A–B
C-N
SIPROTEC 4, 7SJ62/63/64 Handbuch
C53000-G1140-C147-A, Edition 07.2015
) or a
A–N