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7
Installation of an external RFI filter to MF2 and MF3
The EMC protection class of Vacon NXL frequency converters MF2 and MF3 can be changed from N
to H with an optional external RFI filter. Install the power cables in terminals L1, L2 and L3 and the
grounding cable in terminal PE of the filter. See the figures below. See also mounting instructions of
MF2 in Figure 5-2.
Figure 6-10. MF2 with the RFI-filter RFI-0008-5-1
Figure 6-11. RFI installation for MF2 and MF3,
380…500V, 3 phase supply. Filter type RFI-0008-5-1
Figure 6-12. RFI cable installation for MF2 and MF3, 208…240V, 1 phase supply.
Filter type RFI-0013-2-1
MF2
MF3
nxlk1.fh8
BR+
BR-
L1
U/T1
V/T2
W/T3
L2
L3
L1 L2 L3
PE
L1
U/T1
V/T2
W/T3
L2
L3
RFI filter
Mains cable
Earthing
cable
RFI filter
cable
Earthing
cable
Ground
MF2
MF3
rfi2.fh8
N
L
PE
L1
U/T1
V/T2
W/T3
L2
BR+
BR-
L1
U/T1
V/T2
W/T3
L2
L3
RFI filter
Mains cable
Earthing
cable
RFI filter
cable
Earthing
cable
Ground