Siemens SIPROTEC 4 7UT6 Series Manual page 516

Differential protection
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Connection Examples
C.1 Current Transformer Connection Examples
[7ut613-3phtrafo-hochimpedanz-030324-rei, 1, en_GB]
Figure C-14
516
Connection example 7UT613 for a three-phase power transformer with current transformers
between starpoint and earthing point, additional connection for high-impedance protection;
connected to the highsensitivity input
Ι
X3
SIPROTEC 4, 7UT6x, Manual
C53000-G1176-C230-5, Edition 09.2016

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