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4 wire symmetrical (USE) current transformer configuration
Terminal Phase Function Terminal Phase Function
1 1 I1 - CT1 in 7 N Un - Neutral
2 1 U1 - Voltage 8 3 I3 - CT3 out
3 2 I2 - CT2 in 9 2 I2 - CT2 out
4 2 U2 - Voltage 11 1 I1 - CT1 out
5 3 I3- CT3 in
6 3 U3 - Voltage
Typical wiring illustrated below:
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