Connection Examples For Distribution Transformer Application - Siemens Reyrolle 7SR45 Argus Device Manual

Appendix
A.2 Connection Examples for Distribution Transformer Application
A.2

Connection Examples for Distribution Transformer Application

Figure A-3 shows CT circuits connected to 1 A or 5 A of 7SR45 Argus relay. The CT and ground connections are
typical and measure the phase current and ground current of the primary CT only.
[dw_self-powered-relay_distribution_transf-appl, 2, en_US]
Figure A-3
The application shows the use of 50/51/50N/51N/50LC/50G/51G/49 protection functions. The remote trip via
binary input is possible.
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7SR45 Self Powered Relay for Distribution Transformer Application
Reyrolle, 7SR45, Device Manual
C53000-G7040-C101-2, Edition 09.2020