Emission Requirements - Danfoss VLT AutomationDrive FC 301 Series Design Manual

System Integration

5.2.2 Emission Requirements

The EMC product standard for adjustable frequency drives defines four categories (C1, C2, C3 and C4) with specified
requirements for emission and immunity. Table 5.3 states the definition of the four categories and the equivalent classifi-
cation from EN 55011.
Category
C1
5 5
C2
C3
C4
Table 5.3 Correlation between IEC 61800-3 and EN 55011
When the generic (conducted) emission standards are used, the adjustable frequency drives are required to comply with the
limits in Table 5.4.
Environment
First environment
(home and office)
Second environment
(industrial environment)
Table 5.4 Correlation between Generic Emission Standards and EN 55011
56
Design Guide
Definition
Adjustable frequency drives installed in the first environment (home and
office) with a supply voltage less than 1000 V.
Adjustable frequency drives 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 profes-
sional.
Adjustable frequency drives installed in the second environment (industrial)
with a supply voltage lower than 1000 V.
Adjustable frequency drives installed in the second environment with a
supply voltage equal to or above 1000 V or rated current equal to or above
400 A or intended for use in complex systems.
Generic emission standard
EN/IEC 61000-6-3 Emission standard for residential,
commercial and light industrial environments.
EN/IEC 61000-6-4 Emission standard for industrial
environments.
Rev. 2014-04-04 All rights reserved.
Equivalent emission class in EN
55011
Class B
Class A Group 1
Class A Group 2
No limit line.
An EMC plan should be made.
Equivalent emission class in EN
55011
Class B
Class A Group 1
MG33BF22