Danfoss P1K5, Design Manual, Page: 23 / 97

3.2.2 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 3.1 .
Category Definition
Conducted emission requirement
according to the limits given in EN
55011
C1 Frequency converters installed in the first environment (home and office) with a
supply voltage less than 1000V. Class B
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. Class A Group 1
C3 Frequency converters installed in the second environment (industrial) with a supply
voltage lower than 1000V. Class A Group 2
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. No limit line.
An EMC plan should be made.
Table 3.1 Emission Requirements
When the generic emission standards are used the frequency converters are required to comply with the following limits
Environment Generic standard
Conducted emission requirement
according to the limits given in EN 55011
First environment
(home and office) EN/IEC 61000-6-3 Emission standard for residential, commercial
and light industrial environments. Class B
Second environment
(industrial environment) EN/IEC 61000-6-4 Emission standard for industrial environments. Class A Group 1
3.2.3 EMC Test Results (Emission)
Drive type Conducted emission. Maximum shielded cable length Radiated emission
Industrial environment
Housing, trades and
light industries
Industrial environment
EN 55011 Class A2 EN 55011 Class A1 EN 55011 Class B EN 55011 Class A2 EN 55011 Class A1
Without
external
filter
With
external
filter
Without
external
filter
With
external
filter
Without
external
filter
With
external
filter
Without
external
filter
With
external
filter
Without
external
filter
With
external
filter
≤ 2.2kW.
Single
phase, 230V
25m - - 15m - 5m Yes - No Yes
≤ 7.5kW. Up
to 500VAC,
three phase
25m - - 15m - - Yes - No Yes
11kW to
22kW. Up to
500VAC,
three phase
25m - - 15m - - Yes - No Yes
Table 3.2 EMC Test Result
Introduction to VLT Micro D... VLT Micro Drive Design Guide
22 MG02K102 - VLT
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