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EMC Analyses of Systems

Preventive consideration of electromagnetic compatibility (EMC) has become a necessity, not least as a result of legislation. Economical solutions call for the optimised coordination of requirements and measures, taking due account of the tasks required of the electrical equipment and the electromagnetic climate at the specific place of installation. This is accomplished by EMC system analysis, which is defined as the systematic procedure for ensuring the EMC of systems. Its task is to indicate methods and measures to safeguard EMC and toverify their effect preceding and during all phases of system implementation.

A system in this context is to be understood as the extensive technical equipment which can be considered as a unit, such as a hospital, a power station, a factory, a block of offices, a ship, an aircraft or other vehicles or buildings with all their equipment. In most cases, a system can be divided into several subsystems or installations, such as internal communication systems, power supply systems, radar systems etc. Within the scope of an EMC system analysis, the electromagnetic interfaces between systems are examined; this is called inter-system EMC. ATLAS EMS is a competent partner for the realisation of EMC analyses of systems.

Here is a detailed list of the subtasks that can be performed:

  • Formulate the EMC requirements
    • Formulation of the requirements for the system is based on its tasks, while taking all boundary conditions and the electromagnetic climate at the place of installation into consideration.
  • Collect the EMC-relevant data
  • Perform analyses regarding the interference of the individual components
    • Classification of the systems into potential interference sources and victims
    • Preparation of the EMI matrix
    • Individual analysis of each interference source with respect to each interference victim, considering the present transmission path
  • Identify basic and detailed measures to ensure EMC
    • Classification into EMC zones
    • Determine the unit and system limits
    • Grounding, PE, equipotential bonding
    • Filtering
    • Screening
    • Wiring
    • Transient protection
  • List the required EMC tests
  • Specify requirements for the scope of supply
  • Coordination with the relevant experts
  • Measurement to prove EMC
  • Document all considerations, stipulations and activities in the EMC plan
    • Objectives and decision criteria
    • Technical EMC measures
    • Organisational measures
    • Chronological sequence of events
  • Tests
  • VG 95374 Part 2, Programme for Systems and Equipment
  • VG 95374 Part 4, Processes for Systems and Equipment
  • MIL-STD 464, EMC Requirements for Systems
  • Formulate the EMC requirements
    • Formulation of the requirements for the system is based on its tasks, while taking all boundary conditions and the electromagnetic climate at the place of installation into consideration.
  • Collect the EMC-relevant data
  • Perform analyses regarding the interference of the individual components
    • Classification of the systems into potential interference sources and victims
    • Preparation of the EMI matrix
    • Individual analysis of each interference source with respect to each interference victim, considering the present transmission path
  • Identify basic and detailed measures to ensure EMC
    • Classification into EMC zones
    • Determine the unit and system limits
    • Grounding, PE, equipotential bonding
    • Filtering
    • Screening
    • Wiring
    • Transient protection
  • List the required EMC tests
  • Specify requirements for the scope of supply
  • Coordination with the relevant experts
  • Measurement to prove EMC
  • Document all considerations, stipulations and activities in the EMC plan
    • Objectives and decision criteria
    • Technical EMC measures
    • Organisational measures
    • Chronological sequence of events
  • Tests
  • VG 95374 Part 2, Programme for Systems and Equipment
  • VG 95374 Part 4, Processes for Systems and Equipment
  • MIL-STD 464, EMC Requirements for Systems
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