Functions
2.24 Protection for Single-phase Voltage Transformer Connection
SIPROTEC, 7SJ62/64, Manual
C53000-G1140-C207-2, Release date 01.2008
373
2.24 Protection for Single-phase Voltage Transformer Connection
Devices 7SJ62/64 may also be connected to only one primary voltage transformer. Impacts on protective func-
tions to be taken into consideration are described in this section.
Applications
• 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 voltage. Via configuration the device may be adapted for
such an application.
2.24.1 Connection
The device may optionally be supplied with a phase-to-ground voltage (e.g. V
AA–GN
) or a phase-to-phase
voltage (e.g. V
AABB
). The connection mode has been specified during the configuration (see Subsection
2.1.3.2) in address 240 VT Connect. 1ph. The following figure shows a connection example. Further exam-
ples can be found in the Appendix in Subsection A.3.
Figure 2-141 Connection example of a single-phase voltage transformer for 7SJ62 with phase-to-ground
voltage V
C–N
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