ELECTROMAGNETIC COMPATIBILITY (EMC)

All the equipment operating with weak currents has a convincing sensitivity to its electromagnetic environment.

 

• automation
• alarm and detection centers
• communication equipment

 

 

The direct or indirect effects of electromagnetic fields can be a source of malfunctions or destruction of the components of this equipment.

 

Whether at the level of the acquisitions or the routing of the wiring to which they are connected, it is necessary to take this pollution into consideration, then to apply the implementations described by the relevant standards.

 

The latter take into consideration the induced and conducted effects of 50 Hz and even high-frequency interference currents, the source of potential disturbances.

 

 

 

Investigation tracks 

 

At the acquisition center level, observations are made regarding  :

 

The screens and shields in which the electronic boards are installed,

The connections of the system to the ground network of the masses,

Connections of the cable shields entering the earth ground network,

The separation of areas and paths in which strong and weak current flows,

 

At the level of the cable trays, observations are made regarding:

 

The environment in which they move,

The electrical continuity of the various sections from their origin to their completion (connected devices) and the imperative application of the equipotential rule,

Their connection to the earth's network of the masses,

The separation of conductors from strong currents and low currents,

Configurations with a risk of coupling

D & D Protection Engineering Ltd. 2nd Floor, Finance House, 20/21 Aviation Way, Southend on Sea, Essex, SS2 6UN   -   www.dndprotect.com