RFI 1B filter
All frequency converters will cause electromagnetic
noise in the mains supply when they are operating. An
RFI (Radio Frequency Interference) filter will reduce
the electromagnetic noise in the mains supply.
Without an RFI filter there is a risk that a frequency
converter will disrupt other electrical components that
are connected to the mains and might thus cause op-
erating disruption.
By fitting an RFI 1B filter module between the mains
supply and the VLT 2800, the VLT 2800 complies with
the EMC norm EN 55011-1B.
NB!
To comply with EN 55011-1B the RFI 1B
filter module must be fitted together with a
VLT 2800 with integral 1A RFI filter.
Technical data for VLT 2803–2875 RFI 1B filter
Max. cable length (screened/armoured) 200-240 V 100 m (At 1A: 100 m)
Max. cable length (screened/armoured) 380-480 V 25 m (At 1A: 50 m)
Enclosure IP 20
Max. rated current 16 A
Max. Voltage 480 V AC
Max. voltage to earth 300 V AC
Min. distance between VLT and RFI 1B filter Side-by-Side
Min. distance above and below RFI 1B filter 100 mm
Dimensions H x W x D (mm) 200 x 60 x 87
Weight 0.9 kg
See ordering number for RFI 1B filter module under
Accessories for VLT 2800.
MG.27.E2.02 - VLT is a registered Danfoss trademark 13
Introduction to VLT 2800
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