6 Technical Data
6.8 Radio inter ference suppression filter
DC1 Variable Frequency Drive 04/16 MN04020003Z-EN www.eaton.com 153
6.8 Radio interference suppression filter
Figure 82: DX-EMC…-FS… (base-mounted filters with prefabricated connection cables) and 
DX-EMC… (side-mounting filters) external radio interference suppression filters
DX-EMC… external radio interference suppression filters should always be 
installed in the immediate proximity of the corresponding variable frequency 
drive. The connection cables between the radio interference suppression 
filter and the variable frequency drive should not be longer than 300 to 
500 mm if they are installed without screening.
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The DX-EMC… radio interference suppression filters with an 
IP20 degree of protection listed below are intended for 
installation in a control panel.
Please enquire for higher degrees of protection.
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DX-EMC…-FS: Base-mounted filter for the specified frame size
DX-EMC…-L: Low leakage current
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For more information and technical data on DX-EMC… radio 
interference suppression filters, please refer to instruction 
leaflets IL04012017Z and IL04012018Z.
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The maximum motor cable lengths for the C1, C2, and C3 
interference categories listed below are standardized 
recommended values. They apply to the adjustable switching 
frequencies (f
PWM
) of 4 to 24/32 kHz (parameter P-17) in the 
corresponding ratings.