SIEMENS
13/13
Siemens D 21.4 · 2017
Tools and configuration
Configuration notes
EMC notes for the application of the product standard EN 61800-3
13
■
Overview
The electromagnetic compatibility describes – according to the
definition of the EMC directive – the "capability of a device to
work satisfactorily in an electromagnetic environment without
itself causing electromagnetic interference which is unaccept-
able for other devices present in this environment". To guarantee
that the appropriate EMC standards are observed, the devices
must demonstrate a sufficiently high noise immunity, and also
the emitted interference must be limited to acceptable values.
Product standard EN 61800-3 describes the EMC requirements
placed on "Variable-speed drive systems".
A variable-speed drive system (or Power Drive System PDS)
consists of the Control Unit and Power Module or Control Unit,
Line Module and Motor Module plus the relevant electric motors
and encoders including connecting cables.
The driven machine is not part of the drive system.
Environments
EN 61800-3 defines different requirements depending on the
location where the drive is installed, designated as a first and
second environment.
Residential buildings or locations where the drive system is
directly connected to a public low-voltage supply without
intermediate transformer are defined
as the
first environment
.
All locations outside a residential area are defined as the
second environment
. These are basically industrial areas
which are supplied from the medium-voltage network via their
own transformers.
Categories
Four different categories are defined in EN 61800-3 depending
on the installation site of the drive:
Category C1
: Drive systems for rated voltages < 1000 V for
unlimited use in the first environment.
Category C2
: Stationary drive systems for rated voltages
< 1000 V for use in the second environment. Use in the first
environment is possible if the drive system is operated and
installed by qualified personnel. The warning information and
installation instructions supplied by the manufacturer must be
observed.
Category C3
: Drive systems for rated voltages < 1000 V for
exclusive use in the second environment.
Category C4
: Drive systems for rated voltages
≥
1000 V, for
rated currents
≥
400 A or IT supply systems for use in complex
systems in the second environment. An EMC plan must be
drawn up.
G_D213_EN_00009a
First
environment
Second
environment
C1
C2
C4
C3
© Siemens AG 2017