cm) conductors of an adequate cross section, at least 6 mm
2
(AWG10) for single
screen connections.
en06000190.vsd
Rx
Tx
Sc
Lc
Tx
Rx
Sc
Lc
Cc
IED
External
Equipment
1
3
2
2
IEC06000190 V1 EN
Figure 37: Communication cable installation.
PosNo Description
1 Outer shield
2 Protective earth screw
3 Inner shield
Inner shielding of the cable shall be earthed at the external
equipment end only. At the IED terminal end, the inner shield must
be isolated from protective earth.
Section 5 1MRK 502 029-UEN A
Installing the IED
64
Installation and commissioning manual
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