Electrical installation
4.4 Introduction to EMC
Enclosed Drives
Operating Instructions, 12/2018, A5E36652151A
63
4.4
Introduction to EMC
What is EMC?
Electromagnetic compatibility (EMC) describes the capability of an electrical device to
function satisfactorily in an electromagnetic environment without itself causing interference
unacceptable for other devices in the environment.
EMC therefore represents a quality feature for the
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Internal noise immunity: resistance to internal electrical disturbances
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External noise immunity: resistance to external electromagnetic disturbances
●
Noise emission level: environmental effects caused by electromagnetic emissions
To ensure that the cabinet unit functions satisfactorily in the system, an environment subject
to interference must not be neglected. For this reason, special EMC requirements exist for
the system.
Operational reliability and noise immunity
In order to achieve the greatest possible operational reliability and immunity to noise of a
complete system (drive, automation, driven machines, etc.), measures must be taken by the
drive manufacturer and the user. Only when all these measures are fulfilled, can the perfect
functioning of the converter be guaranteed and the specified legal requirements complied
with (in the European Union: 2014/30/EU).
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