Danfoss FC 300 Design Manual page 40

3 Introduction to AutomationDrive FC 300
3.5.3 Emission Requirements
According to the EMC product standard for adjustable speed frequency converters EN/IEC61800-3:2004 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 four categories together with the
requirements for mains supply voltage conducted emissions are given in the table below:
3
Category Definition
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 volt-
age 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.
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)
3.5.4 Immunity Requirements
The immunity requirements for frequency converters depend on the environment where they are installed. The requirements for the industrial environment
are higher than the requirements for the home and office environment. All Danfoss frequency converters comply with the requirements for the industrial
environment and consequently comply also with the lower requirements for home and office environment with a large safety margin.
In order to document immunity against electrical interference from electrical phenomena, the following immunity tests have been made on a system
consisting of a frequency converter (with options if relevant), a screened control cable and a control box with potentiometer, motor cable and motor.
The tests were performed in accordance with the following basic standards:
• EN 61000-4-2 (IEC 61000-4-2): Electrostatic discharges (ESD): Simulation of electrostatic discharges from human beings.
• EN 61000-4-3 (IEC 61000-4-3): Incoming electromagnetic field radiation, amplitude modulated simulation of the effects of radar and radio
communication equipment as well as mobile communications equipment.
• EN 61000-4-4 (IEC 61000-4-4): Burst transients: Simulation of interference brought about by switching a contactor, relay or similar devices.
• EN 61000-4-5 (IEC 61000-4-5): Surge transients: Simulation of transients brought about e.g. by lightning that strikes near installations.
• EN 61000-4-6 (IEC 61000-4-6): RF Common mode: Simulation of the effect from radio-transmission equipment joined by connection cables.
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Generic standard
EN/IEC61000-6-3 Emission standard for residential, commercial and
light industrial environments.
EN/IEC61000-6-4 Emission standard for industrial environments.
MG.33.BC.02 - VLT
Conducted emission requirement
according to the limits given in
An EMC plan should be made.
Conducted emission requirement ac-
cording to the limits given in
® is a registered Danfoss trademark
FC 300 Design Guide
EN55011
Class B
Class A Group 1
Class A Group 2
No limit line.
EN55011
Class B
Class A Group 1