Emission Requirements - Danfoss VLT AutomationDrive Design Manual

Introduction to FC 300

3.5.3 Emission Requirements

According to the EMC product standard for adjustable speed frequency converters EN/IEC 61800-3:2004 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 4 categories together with the requirements for mains supply voltage conducted emissions
are given in Table 3.6.
Category Definition
C1 Frequency converters installed in the first environment (home and office) with a
supply voltage less than 1000V.
C2 Frequency converters installed in the first environment (home and office) with a
supply voltage less than 1000V, 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 1000V.
C4 Frequency converters installed in the second environment with a supply voltage
equal to or above 1000V or rated current equal to or above 400A or intended for
use in complex systems.
Table 3.6 Emission Requirements
When the generic emission standards are used the frequency converters are required to comply with the following limits
Environment Generic standard
First environment EN/IEC 61000-6-3 Emission standard for residential, commercial
(home and office) and light industrial environments.
Second environment EN/IEC 61000-6-4 Emission standard for industrial environments.
(industrial environment)
FC 300 Design Guide
®
MG.33.BD.02 - VLT is a registered Danfoss trademark
Conducted emission requirement
according to the limits given in EN
55011
Class B
Class A Group 1
Class A Group 2
No limit line.
An EMC plan should be made.
Conducted emission requirement
according to the limits given in EN 55011
Class B
Class A Group 1
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