Siemens Siprotec 7UM611 Manual page 365

Multi-functional generator protection relay 7um61 series
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Figure A-9
Unit Connection with Isolated Starpoint:CT connections to three voltage transformers (phase-to-earth
voltages) and three voltage transformers each; Loading resistor connected either directly to starpoint circuit
or via intermediate transformer.
7UM61 Manual
C53000-G1176-C127-3
A.3 Connection Examples
365

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