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 Zero sequence current measurement on a star-delta transformer — without inclusion of the
starpoint current
[nullstrom-sterndreiecktrafo-7ut612-021026-rei, 1, en_GB]
Figure 3-36 Zero sequence current measurement on a star-delta transformer
Mounting and Commissioning
3.3 Commissioning
SIPROTEC 4, 7UT6x, Manual 379
C53000-G1176-C230-5, Edition 09.2016
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