22 SIPROTEC 7SJ81/7SK81 V4.70, Product Information
E50417-K1150-C462-A2, Edition 02.2012
Connections of the LPCT and LPVT Terminals via RJ45
Fixing Elements
Connector Type:RJ45 plug connector as per IEEE 802.3
Cables: CAT 5 (shielded twisted-pair, Siemens recommends
at least SF/UTP)
Figure 4 4 x RJ45 LPCT/LPVT connections
Assignment of the RJ45 socket F1 to F3 (with voltage transformer)
Assignment of the RJ45 socket F1 to F4 (without voltage transformer)
Pin-No. 1 2 3 4 5 6 7 8
RJ45 Ix_S1 Ix_S2 Ux_a Ux_n Ux_a Ux_n Ix_S2 Ix_S1
Pin-No. 1 2 3 4 5 6 7 8
RJ45 Ix_S1 Ix_S2 – – – – Ix_S2 Ix_S1
NOTE
You should use a cable tie to fasten the 4 connecting lines approx. 10 cm
after the RJ45 sockets.
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