Danfoss VLT HVAC Basic Drive FC 101 Design Manual page 33

Introduction to VLT® HVAC B...
Cate-
2 2
Definition
gory
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 equal to or above 1000 V or
rated current equal to or above 400 A
or intended for use in complex
systems.
Table 2.9 Emission Requirements
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)
Table 2.10
32
VLT
requirement
according to the
limits given in EN
Class A Group 1
Class A Group 2
No limit line.
An EMC plan
should be made.
requirement
Generic standard
according to the
limits given in
EN/IEC 61000-6-3 Emission
standard for residential,
commercial and light
industrial environments.
EN/IEC 61000-6-4 Emission Class A Group 1
standard for industrial
environments.
MG18C402 - VLT
®
HVAC Basic Drive Design Guide
Conducted
emission
55011
Class B
Conducted
emission
EN 55011
Class B
®
is a registered Danfoss trademark