RF600 system planning
4.6 Guidelines for electromagnetic compatibility (EMC)
RF600
4-24
System Manual, 09/2005 Edition, J31069 D0171-U001-A0-7618,
Interference sources
In order to achieve a high level of electromagnetic compatibility and thus a very low level of
disturbance in a plant, it is necessary to recognize the most frequent interference sources.
These must then be eliminated by appropriate measures.
Table 4-1
Interference sources: origin and effect
Interference source
Interference results from
Effect on the interference sink
Contacts
System disturbances
Contactors,
electronic valves
Coils
Magnetic field
Collector
Electrical field
Electrical motor
Winding
Magnetic field
Contacts
Electrical field
Electric welding device
Transformer
Magnetic field, system disturbance,
transient currents
Power supply unit, switched-
mode
Circuit
Electrical and magnetic field, system
disturbance
High-frequency appliances
Circuit
Electromagnetic field
Transmitter
(e.g. service radio)
Antenna
Electromagnetic field
Ground or reference potential
difference
Voltage difference
Transient currents
Operator
Static charge
Electrical discharge currents, electrical
field
Power cable
Current flow
Electrical and magnetic field, system
disturbance
High-voltage cable
Voltage difference
Electrical field