Immunity Requirements - Danfoss VLT AutomationDrive FC 300 Design Manual

Introduction
3.5.2 Emission Requirements
According to the EMC product standard for adjustable
speed frequency converters EN/IEC 61800-3:2004 the EMC
3 3 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 3.12.
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 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 3.12 Emission Requirements
When the generic (conducted) emission standards are used
the frequency converters are required to comply with the
following limits
40
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VLT AutomationDrive FC 300 Design Guide, 0.25-75 kW
Environment
First
environment
(home and
office)
Second
environment
Conducted
(industrial
emission
environment)
requirement
according to
Table 3.13 Limits at Generic Emission Standards
the limits given
in EN 55011

3.5.3 Immunity Requirements

Class B
The immunity requirements for frequency converters
depend on the environment where they are installed. The
Class A Group 1
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.
Class A Group 2
In order to document immunity against electrical
interference from electrical phenomena, the following
immunity tests have been made in accordance with
following basic standards:
No limit line.
An EMC plan
•
should be
made.
•
•
•
•
See Table 3.14.
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MG33BE02 - VLT is a registered Danfoss trademark
Generic standard
EN/IEC 61000-6-3 Emission
standard for residential,
commercial and light
industrial environments.
EN/IEC 61000-6-4 Emission
standard for industrial
environments.
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 electro-
magnetic 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.
Conducted
emission
requirement
according to the
limits given in
EN 55011
Class B
Class A Group 1