Siemens Siprotec 7UM611 Manual page 368

Multi-functional generator protection relay 7um61 series
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A Appendix
Figure A-12
Asynchronous motor:Connection to three voltage transformers (phase-to-earth voltages, usually from the
busbar); Displacement voltage detection at broken delta winding, three current transformers; Earth fault di-
rection detection by toroidal CTs
368
7UM61 Manual
C53000-G1176-C127-3

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