Fundamentals of Electromagnetic Compatibility (EMC)

Electromagnetic interference, EMI, has become very important in the last few decades as the amount of electronic equipment in use has increased enormously.  This has led to an increase in the sources of interference, e.g. digital equipment and switching power supplies, and an increase in the sensitivity of equipment to interference, due to higher data rates.

This development demands high quality electrical installations in all buildings where electromagnetic non-compatibility leads to either higher costs or to an unacceptable decrease in safety standards.

This Application Note gives an overview and a basic understanding of the major physical principles of electromagnetic interference and an introduction to the principles of mitigation of disturbing effects.  As a result, the measures required to achieve an EMC-compliant installation should be easily understood.

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  • Consider EMC from the very beginning of design or refurbishment
  • Any single system is embedded in a system of complex mutual EMI interrelations.
  • Generate an “EMC matrix” for planning EMC compliance, in new and refurbished buildings
  • Use EMC certified material, installed by EMC trained staff, supervised by EMC skilled engineers

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