EMC is the abbreviation for "electromagnetic compatibility"

The capability of an apparatus, equipment or a system to operate satisfactorily in an electromagnetic environment without causing any electromagnetic disturbances which would be unacceptable to the apparatuses, eqipment and systems existing in this environment.

Directive number: 89/336/EWG

EMC (EC) directive (EU) 41 kB
EMC (EC) law 64 kB
Compendium for application of the EMC (EC) directive 494 kB