Danfoss VLT HVAC Drive FC 100 Series Design Manual page 40

2. Introduction to VLT HVAC Drive
Definition
Category
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
2
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 above
1000 V and rated current above 400 A or intended for use in complex systems.
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)
2.9.3. EMC Test Results (Emission)
The following test results have been obtained using a system with a frequency converter (with options if relevant),
a screened control cable, a control box with potentiometer, as well as a motor and motor screened cable.
RFI filter type
Setup
H1
1.1-45 kW 200-240 V
1.1-90 kW 380-480 V
H2
1.1-3.7 kW 200-240 V
5.5-45 kW 200-240 V
1.1-7.5 kW 380-480 V
11-90 kW 380-480 V
110-450 kW 380-480 V
75-500 kW 525-600 V
H3
1.1-45 kW 200-240 V
1.1-90 kW 380-480 V
H4
110-450 kW 380-480 V
75-315 kW 525-600 V
Hx
1.1-90 kW 525-600 V
Table 2.1: EMC Test Results (Emission)
40
Generic standard
EN/IEC61000-6-3 Emission standard for residential, commercial and
light industrial environments.
EN/IEC61000-6-4 Emission standard for industrial environments.
Conducted emission.
Maximum shielded cable length.
Industrial environment
EN 55011 EN 55011
Class A2 Class A1
150 m 150 m
150 m 150 m
5 m No
25 m No
5 m No
25 m No
50 m No
150 m No
75 m 50 m
75 m 50 m
150 m 150 m
150 m 30 m
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MG.11.B7.02 - VLT
Conducted emission requirement accord-
ing to the limits given in EN55011
An EMC plan should be made.
Conducted emission requirement accord-
ing to the limits given in EN55011
Radiated emission
Housing, Industrial envi-
trades and ronment
light industries
EN 55011 EN 55011 Class
Class B A1
50 m Yes
50 m Yes
No No
No No
No No
No No
No No
No No
10 m Yes
10 m Yes
No Yes
No No
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VLT HVAC Drive Design Guide
Class B
Class A Group 1
Class A Group 2
No limit line.
Class B
Class A Group 1
Housing, trades and
light industries
EN 55011 Class B
No
No
No
No
No
No
No
No
No
No
No
No
-