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84
VLT
®
3500 HVAC
MG.35.B1.02 – VLT is a registered Danfoss trademark
4.6 EMC test r
esults
Standard
Switching frequency
VLT type
VLT
3502-3511
3502-3504
380-500 V
200 V
3516-3562
3508-3532
EN55014
4.5 kHz
14 kHz
yes
yes
ye
ye
EN55011 Class A Gr.1
4.5 kHz
14 kHz
yes
yes
ye
ye
EN55011 Class B Gr.1
4.5 kHz
14 kHz
yes
yes
ye
ye
Emission:
Subsequent test results have been obtained
using a system with a VLT
®
frequency
converter (with options, if relevant), a
screened control cable and control box with
potentiometer, screened motor cable and
motor.
With the purpose of minimising the cable-borne interference to the mains supply and the
radiated interference from the frequency converter system, the motor cables should be kept
as short as possible. According to experience, most installations represent only a slight risk
of any interference from radiation.
1
Using the RFI option/module
2
Without the RFI option/module the cable borne part of EN55011 class A gr. 1
(150kHz-30MHz) is complied with.
3
Radiated emission (30MHz-1GHz) in accordance with EN55011 class A group 1.
1
1
1
1, 3
1, 3
1
1
1
1
1, 3
1, 2
1, 3
1, 3
1
1
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