Emc-Correct Electrical Installation - Danfoss VLT 2800 Series Operating Instructions Manual

EMC-correct electrical installation

General points to be observed to ensure EMC-correct
electrical installation.
- Use only screened/armoured motor cables
and screened/armoured control cables.
Connect the screen to earth at both ends.
-
- Avoid installation with twisted screen ends
(pigtails), since this ruins the screening effect
at high frequencies. Use cable clamps in-
stead.
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VLT 2800 Series
- It is important to ensure good electrical con-
tact from the installation plate through the
installation screws to the metal cabinet of the
frequency converter.
- Use starwashers and galvanically conductive
installation plates.
- Do not use unscreened/unarmoured motor
cables in the installation cabinets.
The illustration below shows EMC-correct electrical in-
stallation, in which the frequency converter has been
fitted in an installation cabinet and connected to a PLC.
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MG.27.A2.02 - VLT is a registered Danfoss trademark