•
•
•
Table 18: Emission Requirements
Catego-
ry
Definition
Conducted emission re-
quirement according to
the limits given in EN
55011
C1
Drives installed in the 1
st
environment (home and office) with a supply voltage less than
1000 V.
Class B
C2
Drives installed in the 1
st
environment (home and office) with a supply voltage less than
1000 V, which are neither plug-in nor movable and are intended for installation and
commissioning by a professional.
Class A Group 1
C3
Drives installed in the 2
nd
environment (industrial) with a supply voltage lower than
1000 V.
Class A Group 2
C4
Drives installed in the 2
nd
environment (industrial) 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.
No limit line. Make an EMC
plan.
When the generic emission standards are used, the drives are required to comply with the limits in
.
Table 19: Emission Limit Classes
Environment
Generic standard
Conducted emission require-
ment according to the limits
given in EN 55011
1
st
environment (home and of-
fice)
EN/IEC 61000-6-3 Emission standard for residential, com-
mercial, and light industrial environments.
Class B
2
nd
environment (industrial envi-
ronment)
EN/IEC 61000-6-4 Emission standard for industrial envi-
ronments.
Class A Group 1
N O T I C E
According to the EMC Directive, a system is defined as a combination of several types of equipment, finished products, and/or
components combined, designed and/or put together by the same person (system manufacturer) intended to be placed on the
market for distribution as a single functional unit for an end user and intended to be installed and operated together to perform a
specific task. The EMC Directive applies to products/systems and installations, but in case the installation is built up of CE marked
products/systems the installation can also be considered compliant with the EMC Directive. Installations shall not be CE marked.
According to the EMC Directive, Danfoss Drives as a manufacturer of product/systems is responsible for obtaining the essential
requirements of the EMC Directive and attaching the CE mark. For systems involving load sharing and other DC terminals, Dan-
foss Drives can only ensure compliance to the EMC Directive when end users connect combinations of Danfoss Drives products
as described in our technical documentation.
If any 3
rd
-party products are connected to the load share or other DC terminals on the AC drives, Danfoss Drives cannot guaran-
tee that the EMC requirements are fulfilled.
6.5.3 Immunity Requirements
The immunity requirements for drives depend on the environment in which they are installed. The requirements for the industrial
environment are higher than the requirements for the home and office environment. All Danfoss VLT® drives comply with the re-
quirements for the industrial environment and therefore also comply with the lower requirements for home and office environment
with a large safety margin.
To document immunity against burst transient from electrical phenomena, the following immunity tests have been carried out on a
system consisting of:
A drive (with options if relevant).
A shielded control cable.
A control box with potentiometer, motor cable, and motor.
AJ330233902305en-000201 / 130R0596
54 | Danfoss A/S © 2021.05
Electrical Installation
Considerations
VLT® Compressor Drive CDS 803
Design Guide
