Danfoss VLT AQUA Drive Design Manual page 32

2. Introduction to VLT AQUA Drive
2.10.2. Emission Requirements
According to the EMC product standard for adjustable speed frequency converters EN/IEC61800-3:2004 the EMC requirements depend on the intended
use of the frequency converter. Four categories are defined in the EMC product standard. The definitions of the four categories together with the
requirements for mains line conducted emissions are given in the table below:
2
Category Definition
C1 frequency converters installed in the first environment (home and office) with a
supply voltage less than 1000 V.
C2 frequency converters installed in the first environment (home and office) with a
supply voltage less than 1000 V which are neither plug-in nor movable and are
intended to be installed and commissioned by a professional.
C3 frequency converters installed in the second environment (industrial) with a supply
voltage lower than 1000 V.
C4 frequency converters installed in the second environment with a supply voltage
above 1000 V and rated current above 400 A or intended for use in complex sys-
tems.
When the generic emission standards are used the frequency converters are required to comply with the following limits:
Environment
First environment
(home and office)
Second environment
(industrial environment)
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Generic standard
EN/IEC61000-6-3 Emission standard for residential, commer-
cial and light industrial environments.
EN/IEC61000-6-4 Emission standard for industrial environ-
ments.
MG.20.N4.02 - VLT
Conducted emission require-
ment according to the limits
An EMC plan should be made.
Conducted emission require-
ment according to the limits giv-
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is a registered Danfoss trademark
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VLT AQUA Drive Design Guide
given in EN55011
Class B
Class A Group 1
Class A Group 2
No limit line.
en in EN55011
Class B
Class A Group 1