NORDAC PRO – Migration guideline SK 5xxE to SK 5xxP
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MI 0500 en-2922
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2.9.2 Line filter
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Both NORDAC
PRO
series are equipped with an integrated EMC line filter. The compliance with
standards for limit values of class A1/category C2 is guaranteed for shielded motor cable lengths
< 20 m. For shielded motor cable lengths < 5 m, the class B/category C1 limit values are observed.
Information
For the following SK 5xxP device types, the compliance with the declared class B1/category C1 limit
values cannot be guaranteed.
•
SK 5xxP-250-123-A … SK 5xxP-550-123-A
•
SK 5xxP-250-340-A … SK 5xxP-550-340-A
For applications with longer motor cables or for compliance with the class B limit values, external line
filters are available as accessory components.
For these external line filters used for reducing the emission of electromagnetic interferences, a
differentiation is made between two different types and designs.
Design
•
Chassis line filter
•
Footprint line filter
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2.9.2.1
Chassis line filters
In the table below, the different SK HLD … chassis line filters are assigned to the individual power
ranges for the SK 5xxE.
Information
Optional chassis line filters for the entire SK 5xxP power range are available via the Getriebebau
NORD sales department
only on request
.
Illustration 9: NORDAC PRO SK 5xxE chassis line filter
The SK HLD … chassis line filters are UL certified and can also be installed outside the control cabinet
due to their IP20 protection class version and for better heat dissipation. The chassis line filters must
be connected to the mains connection and the frequency inverter via a separate connection cable – a
shielded cable is recommended. The connection cables should be as short as possible.
