Siemens SINAMICS DCM Manual page 94

6.1 Instructions for EMC-compliant drive installation
Note
These installation instructions do not claim to contain all details and versions of devices, or
to take into account all conceivable operational cases and applications.
Should you require further information or encounter specific problems which have not been
dealt with in enough detail for your field of application, please contact your local Siemens
office.
6.1.1 Basic information about EMC
What is EMC?
EMC stands for "electromagnetic compatibility" and describes "the capability of a device to
function satisfactorily in an electromagnetic environment without itself causing interference
unacceptable for other devices in the environment". Therefore, the various devices used
should not cause interference to one another.
Within the context of the EMC Directive, the SINAMICS DC MASTER devices described in
this document are not "devices" at all, but are instead "components" that are intended to be
installed in an overall system or overall plant. For reasons of clarity, however, the generic
term "devices" is used in many cases.
Interference emissions and interference immunity
EMC is dependent upon two properties demonstrated by the devices involved in the system:
interference emissions and interference immunity. Electrical devices may be sources of
interference (senders) and/or potentially susceptible equipment (receivers).
Electromagnetic compatibility is ensured when the existing sources of interference do not
impair the function of potentially susceptible equipment.
A device may even be a source of interference and potentially susceptible equipment at the
same time: For example, the power unit of a converter should be viewed as a source of
interference and the control unit as potentially susceptible equipment.
Product standard EN 61800-3
The EMC requirements for "Variable-speed drive systems" are described in the product
standard EN 61800-3. A variable-speed drive system (or Power Drive System PDS) consists
of the drive converter and the electric motor including cables. The driven machine is not part
of the drive system. EN 61800-3 defines different limits for the immunity to electromagnetic
interference depending on the installation site of the drive system, referred to as the first and
second environments.
Residential buildings or locations at which the drive system is directly connected to a public
low-voltage network without an intermediate transformer are defined as the first environment.
SINAMICS DCM DC Converter
Operating Instructions, 02.2015, A5E34763375/RS-AA/001
6.1 Instructions for EMC-compliant drive installation
ac.maher.co.ir
Connecting
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