EMC – electromagnetic compatibility

Coexistence of equipment

For all electrotechnical equipment, EMC must be considered right from the initial design phase and the various principles and rules carried on through to manufacture and installation.

This means that all those involved, from the engineers and architects that design a building to the technicians that wire the electrical cabinets, including the specialists that design the various building networks and the crews that install them, must be concerned with EMC – a discipline aimed at achieving the “peaceful” coexistence of equipment sensitive to electromagnetic disturbances (which may therefore be considered as the “victim”) alongside equipment emitting such disturbances (in other words, the “source” of the disturbances).

This publication is a compilation of many years of acquired experience at Schneider Electric, presenting various disturbances encountered and providing some practical remedies.

Today, EMC is indispensable

Equipment and systems are always subjected to electromagnetic disturbance, and any electrotechnical equipment is, itself, more or less an electromagnetic disturbance generator. These disturbances are generated in many ways. However, the main underlying causes are sudden variations in current or voltage.

AUTHOR: Schneider Electric expert | Jacques DELABALLE