Appendix A Foreign Standards
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344
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A.4 Requirements on Cables and Cabling
A.4.1 Requirements for Shielded Cable
1) Use the shielded cable to connect the motor to meet the EMC requirements. The
4-conductor shielded cable is recommended with one conductor as the PE. If the
3-conductor shielded cable is used and the shield cannot meet the conduction
requirements, an additional PE wire must be added.
■
Recommended cables:
PE
Shield
PE conductor
and shield
PE
Shield
Cross section of recommended shielded cables
■
Non-recommended power cables:
Cross section of non-recommended shielded cables
2) To suppress emission and conduction of the radio frequency interference
and conductivity. as shown in Figure A-4.
Cable core
Internal insulator
Copper braid
Copper shield
Insulation jacket
Braided density of shield
3) The grounding area of the shielded cable must be as large as possible. Fasten the
shield to the metal plate with the metal cable clamp, as shown in the following
Metal plateMetal cable clampShielded cable
Fastening the shield with the metal cable clamp
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