EMC
MD380 User Manual
- 256 -
AC Drive Model
Rated Output Current
(A)
AC Output Reactor Model
(Shanghai Eagtop)
MD380-7T355G 374 OCL-0490-EISH-E14U
MD380-7T400G 410 OCL-0490-EISH-E14U
MD380-7T450G 465 OCL-0530-EISH-E13U
MD380-7T500G 550 OCL-0600-EISH-E12U
7.4 Shielded Cable
7.4.1 Requirements for Shielded Cable
The shielded cable must be used to satisfy the EMC requirements of CE marking. Shielded
cables are classified into three-conductor cable and four-conductor cable. If conductivity
of the cable shield is not sufcient, add an independent PE cable, or use a four-conductor
cable, of which one phase conductor is PE cable.
The three-conductor cable and four-conductor cable are shown in the following gure.
PE
Shield
PE conductor
and shield
PE
Shield
To suppress emission and conduction of the radio frequency interference effectively, the
shield of the shielded cable is cooper braid. The braided density of the cooper braid should
be greater than 90% to enhance the shielding efciency and conductivity, as shown in the
following gure.
Cable core
Internal insulation
Copper braid
Copper shield
Insulation jacket
The following gure shows the grounding method of the shielded cable.
Figure 7-1 Grounding of the shielded cable
The shield
must be
grounded.
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