Monarch NICE 5000, Руководство пользователя

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9 EMC NICE5000 User Manual
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Controller Model
Power Capacity
(kVA)
Rated Input
Current (A)
AC Input Reactor Model
(Inovance)
220-NICE-LWX -4015-A/B/C0 13.9 41.0 Consult the manufacturer.
220-NICE-LWX -4018-A/B/C0 17.3 40.0 Consult the manufacturer.
220-NICE-LWX -4022-A/B/C0 23.1 49.0 Consult the manufacturer.
220-NICE-LWX -4030-A/B/C0 33.0 61.0 Consult the manufacturer.
9.4 Shielded Cable
9.4.1 Requirements for the Shielded Cable
The shielded cable must be used to satisfy the EMC requirements. Shielded cables are
classified into three-conductor cable and four-conductor cable. If conductivity of the cable
shield is not sufficient, 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 figure.
PE
Shield
PE conductor
and shield
PE
Shield
The motor cable and PE shielded conducting wire (twisted shielded) should be as short
as possible to reduce electromagnetic radiation and external stray current and capacitive
current of the cable.
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 efficiency and conductivity, as shown in the
following figure.
Cable
core
Internal
insulator
Copper braid
Copper shield
Insulation jacket
It is recommended that all control cables be shielded. The grounding area of the shielded
cable should be as large as possible. A suggested method is to fix the shield on the metal
plate using the metal cable clamp so as to achieve good contact, as shown in the following
figure.
Metal plate
Metal cable clamp
Shielded cable