Siemens SIPROTEC 4 7UT6 Series Manual page 379

!
DANGER
Operations in the primary area must be performed only with plant sections voltage-free and earthed!
Perilous voltages may occur even on voltage-free plant sections due to capacitive influence caused
by other live sections!
²
[nullstrom-sterndreiecktrafo-7ut6_ohne-messung-021026-rei, 1, en_GB]
Figure 3-35
[nullstrom-sterndreiecktrafo-7ut612-021026-rei, 1, en_GB]
Figure 3-36
SIPROTEC 4, 7UT6x, Manual
C53000-G1176-C230-5, Edition 09.2016
Zero sequence current measurement on a star-delta transformer — without inclusion of the
starpoint current
Zero sequence current measurement on a star-delta transformer
Mounting and Commissioning
3.3 Commissioning
379