Ferrite Rings - KEB COMBIVERT R6-S Series Instruction Manual

3.
3.4.1

Ferrite rings

Ferrite rings are used for the reduction of the cable-based and radiated interferences. For
high damping, the ferrite rings are attached as close as possible to the interference source,
i.e. at the DC bus connections and at the motor output terminals of the frequency inverter.
The conductors must be passed through the ferrite core for use as a current-compensated
choke. PE must be passed outside of the ferrite ring. Further information can be taken from
the provided documentation. Which ferrite ring shall be used is dependent on the used cable
cross-section.
Part number
0090396-2621
0090390-5241
0090395-3820
0090395-5222
0090395-5520
Nominal size in mm
R 42/26/18
R 56/32/18
R 63/38/25
R 87/54/30
R 102/66/15
Technical Data
Inside diameter in mm
24.9
29.5
36.0
54.5
64.5
US - 19