KEB COMBIVERT F5 Operation Manual page 35

Use with regen units
Ferrite rings are required to limit common mode noise and minimize elec-
trical disturbances on the DC bus connections between the inverter and
regen unit(s). Ferrite rings are to be installed over both the ++ and -- DC
bus connectors and should be installed as close to the inverter as possible.
Do not pass ground conductors through the ferrite rings. When multiple
regen units in parallel are used with a single inverter, the number of ferrite
rings on the DC bus to be installed should be the same as the number of
regen units.
Each KEB R6 regen unit is provided with a ferrite ring with the following part
number and dimension:
Part Number
00.90.390-K000
i
If the regen unit is not installed inside the same control cabinet as
the inverter, a second ferrite ring is required between the inverter and
regen to further limit common mode noise on the DC bus.
Ferrite Ring Installation
Overall Dimensions in mm (inches)
56 x 32 x 18 (2.2 x 1.3 x 0.7)
35