Rfi 1B Filter - Danfoss VLT 2800 Design Manual

Introduction to VLT 2800
1 1
Maximum cable length (unscreened/
1)
unarmoured)
Maximum cable length (screened/armoured)
Enclosure
Maximum rated current
Maximum voltage
Minimum distance between frequency
converter and motor coil
Minimum distance above and below motor
coil
Mounting
Dimensions HxWxD (mm)
Weight
Table 1.4 Technical Data for VLT 2803-2875 Motor Coils
1) Parameter 411 Switching frequency=4500 Hz.
2) For mechanical dimensions see chapter 3.1.1 Overview.
For ordering numbers for motor coil module, see
chapter 1.10 Accessories for VLT 2800.

1.7.10 RFI 1B Filter

All frequency converters cause electromagnetic noise in
the mains supply when they are operating. An RFI (radio
frequency interference) filter reduces the electromagnetic
noise in the mains supply. Without an RFI filter, there is a
risk that a frequency converter disrupts other electrical
components that are connected to the mains and might
thus cause operating 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.
To comply with EN 55011-1B, the RFI 1B filter module must
be fitted together with a VLT 2800 with integral 1A RFI
filter.
12
Design Guide
200 m
1) 100 m
IP20
16 A
1)
1) 480 V AC
Side-by-side
100 mm
Vertical mounting
only
200x90x152
2)
3.8 kg
Danfoss A/S © Rev. May/2014 All rights reserved.
Illustration 1.3 RFI 1B Filter Example
Maximum cable length (screened/armoured)
200-240 V
Maximum cable length (screened/armoured)
380-480 V
Enclosure
Maximum rated current
Maximum Voltage
Maximum voltage to ground
Minimum distance between VLT and RFI 1B
filter
Minimum distance above and below RFI 1B
filter
Mounting
Dimensions HxWxD (mm)
Weight
Table 1.5 Technical Data for VLT 2803–2875 RFI 1B Filter
For ordering number for RFI 1B filter module, see
chapter 1.10 Accessories for VLT 2800.
100 m (At 1A: 100
m)
25 m (At 1A: 50
m)
IP20
16 A
480 V AC
300 V AC
Side-by-side
100 mm
Vertical mounting
only
200x60x87
0.9 kg
MG27E402