Siemens SIPROTEC 4 7SD80 Manual page 315

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Figure C-3
Important: Grounding of the cable shield must be effected at the cable side
The switchover of the current polarity (address 201) also reverses the polarity of the current input IN!
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Figure C-4
SIPROTEC 4, 7SD80, Manual
E50417-G1100-C474-A2, Edition 02.2018
Current transformer connections to three current transformers, ground current from addi-
tional summation current transformer – preferably for effectively or low-resistance grounded
networks
Example for the connection type "VAN, VBN, VCN" with voltage connection on the feeder side
C.1 Connection Examples for Current and Voltage Transformers
Connection Examples
315