Installation Instructions For Proper Emc Installation Of Drives; Fundamental Principles Of Emc; What Is Emc; Noise Radiation And Noise Immunity - Siemens SIMOTRAS 6SG7050 Operating Instructions Manual

Connections
6.2

Installation instructions for proper EMC installation of drives

NOTE
These installation instructions do not purport to handle or take into account all of the equipment
details or versions or to cover every conceivable operating situation or application.
If you require more detailed information, or if special problems occur, which are not handled in
enough detail in this document, please contact your local Siemens office.
The contents of these installation instructions are not part of an earlier or existing agreement or
legal contract and neither do they change it. The actual purchase contract represents the
complete liability of the A&D Variable-Speed Drives Group of Siemens AG. The warrant
conditions, specified in the contract between the two parties, is the only warranty which will be
accepted by the A&D Variable-Speed Drives Group. The warranty conditions specified in the
contract are neither expanded nor changed by the information provided in the installation
instructions.
6.2.1

Fundamental principles of EMC

6.2.1.1

What is EMC

EMC stands for "electromagnetic compatibility" and defines the capability of a piece of equipment to
operate satisfactorily in an electromagnetic environment without itself causing electromagnetic
disturbances that would adversely affect other items of equipment in its vicinity.
Thus, different items of equipment must not adversely affect one another.
6.2.1.2

Noise radiation and noise immunity

EMC is dependent on two characteristics of the equipment/units involved, i.e. radiated noise and
noise immunity. Items of electrical equipment can either be fault sources (transmitters) and/or noise
receivers.
Electromagnetic compatibility exists if the fault sources do not adversely affect the function of the
noise receivers.
An item of equipment can be both a noise source and a noise receiver. For example, the power
section of a converter must be regarded as a noise source and the control section as a noise
receiver.
6.2.1.3

Limit values

Electrical drives are governed by Product Standard EN 61800-3. According to this standard, it is not
necessary to implement all EMC measures for industrial supply networks. Instead, a solution
adapted specifically to the relevant environment can be applied. Accordingly, it may be more
economical to increase the interference immunity of a sensitive device rather than implementing
noise suppression measures for the converter. Thus, solutions are selected depending on their
cost-effectiveness.
SIMOTRAS HD converters are designed for industrial applications (industrial low-voltage supply
system, i.e. a system that does not supply domestic households).
Noise immunity defines the behaviour of a piece of equipment when subjected to electromagnetic
disturbance. The Product Standard regulates the requirements and assessment criteria for the
behaviour of equipment in industrial environments. The converters in this description comply with
this Standard (Section 6.2.2.3).
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SIEMENS AG 6SG7000-0BA76
SIMOTRAS HD Operating Instructions
01.04