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H1 - Integrated EMC filter. Fulfil EN 55011 Class A1/B and EN/IEC 61800-3 Category 1/2
H2 - No additional EMC filter. Fulfil EN 55011 Class A2 and EN/IEC 61800-3 Category 3
H3 - Integrated EMC filter. Fulfil EN 55011 class A1/B and EN/IEC 61800-3 Category 1/2 (Frame size A1 only)
H4 - Integrated EMC filter. Fulfil EN 55011 class A1 and EN/IEC 61800-3 Category 2
3.5.3 Emission Requirements
According to the EMC product standard for adjustable speed adjustable frequency drives EN/IEC61800-3:2004, the EMC requirements depend on the
intended use of the adjustable frequency drive. Four categories are defined in the EMC product standard. The definitions of the four categories together
with the requirements for line power supply voltage-conducted emissions are given in the table below:
Category
Definition
Conducted emission requirement
according to the limits given in
EN55011
C1
adjustable frequency drives installed in the first environment (home and office) with a
supply voltage less than 1,000 V.
Class B
C2
adjustable frequency drives installed in the first environment (home and office) with a
supply voltage of less than 1000 V, which are neither plug-in nor movable and are in-
tended to be installed and commissioned by a professional.
Class A Group 1
C3
adjustable frequency drives installed in the second environment (industrial) with a supply
voltage lower than 1,000 V.
Class A Group 2
C4
Adjustable frequency drives 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.
No limit line.
An EMC plan should be made.
When the generic emission standards are used the adjustable frequency drives are required to comply with the following limits:
Environment
Generic standard
Conducted emission requirement ac-
cording to the limits given in
EN55011
First environment
(home and office)
EN/IEC61000-6-3 Emission standard for residential, commercial and
light industrial environments.
Class B
Second environment
(industrial environment)
EN/IEC61000-6-4 Emission standard for industrial environments.
Class A Group 1
3.5.4 Immunity Requirements
The immunity requirements for adjustable frequency drives 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 adjustable frequency drives 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 an adjustable frequency drive (with options if relevant), a shielded 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.
FC 300 Design Guide
3 Introduction to AutomationDrive FC 300
MG.33.BC.22 - VLT
®
is a registered Danfoss trademark
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