WEG CFW-11 User Manual - page 52
Installation and Connection
3
3-26 | CFW-11
NOTE!
The magnetic field created by the current circulation in these cables may induce currents in nearby
metal parts, heating them, and cause additional electrical losses. Therefore, keep the three cables
(U, V, W) always together.
Shielded Cables:
Are mandatory when the electromagnetic compatibility directive (2014/30/EU) has to be met, as defined
by the standard EN 61800-3 "Adjustable Speed Electrical Power Drive Systems". These cables act mainly by
reducing the irradiated emission in the radio-frequency range.
Regarding to the types and installation details, follow the recommendations of IEC 60034-25 "Guide for
Design and Performance of Cage Induction Motors Specifically Designed for Converter Supply", verify the
summary in the
Figure 3.14 on page 3-27
. Refer to the standard for further details and eventual modifications
related to new revisions.
Keep motor cables away from other cables (signal cables, sensor cables, control cables, etc.), according to
the
Table 3.6 on page 3-27
.
The grounding system must be well interconnected among the several installation locations such as the
grounding points of the motor and the inverter. Voltage difference or impedance between the several points
may cause the circulation of parasite currents among the equipments connected to the ground, resulting in
electromagnetic interference problems.