Danfoss VLT Series Design Manual page 119
Hvac drive
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Also See for VLT Series:
- Programming manual (390 pages) ,
- Design manual (165 pages) ,
- Service manual (158 pages)
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VLT
®
HVAC Drive Design Guide
5. How to Install
5
5.18: EMC-compliant electrical installation of an adjustable frequency drive in a cabinet.
5.7.2. Use of EMC-Compliant Cables
Danfoss recommends braided shielded/armored cables to optimize EMC immunity of the control
cables and the EMC emission from the motor cables.
The ability of a cable to reduce the in and outgoing radiation of electric noise depends on the
transfer impedance (Z
). The shield of a cable is normally designed to reduce the transfer of
T
electric noise; however, a shield with a lower transfer impedance (Z
) value is more effective than
T
a shield with a higher transfer impedance (Z
).
T
Transfer impedance (Z
) is rarely stated by cable manufacturers, but it is often possible to estimate
T
transfer impedance (Z
) by assessing the physical design of the cable.
T
119
MG.11.B4.22 - VLT
®
is a registered Danfoss trademark.
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