Eaton PowerXL DH1 - EMC Measures; Figure 13. EMC Measures; Table 26. Motor Power Cable EMC Guidelines

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Chapter 4—Safety and switching
POWERXL SERIES VFD MN040002EN—February 2018 www.eaton.com
EMC Measures
Electrical components in a system (machine) have an
interaction effect on each other. Each device not only emits
interference but is also affected by it. The interference
can be produced by galvanic, capacitive, and/or inductive
sources, or by electromagnetic radiation. In practice, the
limit between line-conducted interference and radiated
emitted interference is around 30 MHz. Above 30 MHz,
cables and conductors act like antennas that radiate
electromagnetic waves.
Electromagnetic compatibility (EMC) for frequency
controlled drives (variable frequency drives) is implemented
in accordance with product standard IEC/EN 61800-3. This
includes the complete power drive system (PDS), from the
input supply to the motor, including all components, as well
as cables. This type of drive system can consist of several
individual drives.
The generic standards of the individual components in a
PDS compliant with IEC/EN 61800-3 do not apply. These
component manufacturers, however, must offer solutions
that ensure standards-compliant use.
In Europe, maintaining the EMC guidelines is mandatory.
A declaration of conformity (CE) always refers to a “typical”
power drive system (PDS). The responsibility to comply with
the legally stipulated limit values and thus the provision of
electromagnetic compatibility is ultimately the responsibility
of the end user or system operator. This operator must
also take measures to minimize or remove emission in the
environment concerned (see Figure 13). He must also use
means to increase the interference immunity of the devices
of the system.
With their high interference immunity up to category C2,
PowerXL frequency inverters are ideal for use in commercial
networks (1st environment).
Table 26. Motor power cable EMC guidelines
Item Directive
Product IEC 61800-2
Safety UL 508C, IEC/EN 61800-5-1
EMC (at default
settings)
Immunity (EMS): IEC/EN 61800-3, 2nd environment
Radiated and Conducted emissions (EMI): IEC/EN 61800-3
230/480 V Series:
Category C1: is possible with external filter connected
todrive. Please consult factory
Category C2: with internal filter maximum of 10 m
motorcable length
FR0: This is obtained with 2 turns on a ferrite core
andusing metal ground plate
Category C3: with internal filter maximum of 50 m
motorcable length
FR0: This is obtained with no ferrite core and metal plate
575 V Series:
Category C3: with internal filter maximum of 10 m
motorcable length
Figure 13. EMC Measures
Low Voltage Supply Grid
1 Environment
st
Category C1 Category C1/C2
Low Voltage Supply Grid
2 Environment
nd
Category C3/C4