EMC EMC

Electromagnetic Compatibility

Frank Gräbner

Lecture EMCLecture EMC Gräbner

Programme

1. Introduction1.1 Conception1.2 EMC Standards

2. Electromagnetic Coupling2.1 Disturb Flow, Disturb Hollow 2.2 Nature of Coupling2.3 EMC Design

3. EMC Arrangement 

Lecture EMCLecture EMC Gräbner

3.1 Shielding3.2 EMC Constructions

 4 EMC Measurements

4.1 Practice 4.2 New Measurements Standards  5 EM Fields and Life 5.1 Biological Effects of electromagnetic fields

   

Lecture EMCLecture EMC Gräbner

6. Computer Simulation

( voltage emission, RF field Mefisto 2D )

Lecture EMCLecture EMC Gräbner

Books 

[ 1 ] Phillipow, E. Grundlagen der Elektrotechnik, Akademischer Verlag 1976, Leipzig

[ 2 ] Durcansky, G. EMV gerechtes Gerätedesign, Franzis Verlag München 1992

[ 3 ] Unger, H. Elektromagnetische Wellen auf Leitungen, Hüthig Verlag, Heidelberg 1980

[ 4 ] Leute, Kunstoffe und EMV, Hanser Verlag, 2000

[ 5 ] Weiss, J. EMV – gerechtes Gehäusedesign, TAW Wuppertal, Seminar-Unterlagen, 2003

Lecture EMCLecture EMC Gräbner

1.1          Conception

Why EMC ?

- small packages - higher frequency CPU- new information technology ( WLAN, IEEE

standarts, UMTS, GPRS ..... )- new car technics , car distance radar- The devices must be safe from other

electromagnetic fields, voltages and impulses

Lecture EMCLecture EMC Gräbner

1.1          Conception

EMC in Hospitals

Lecture EMCLecture EMC Gräbner

1.1        EMC Directive:

All apparatus liable to cause electromagnetic disturbance ( emission ) or performance of wich is liable to be affect by such disturbances ( immunity ) .

But a device must not have so much emission and must work well in an immunity effect.

Lecture EMCLecture EMC Gräbner

1.1       Example for Emission (

conducted and E – Field )

1.2 EMC Standards Gräbner

- Product Standards, Generic Standards , Company Standards and ...

- In Europe : EN Standards for the EU Market

For Example:

• Voltage Disturbance EN 55011• Radiation Disturbance EN 55011• Current Harmonics EN 60555-2• Electrostatic Discharge EN 61000-4-2• Burst EN 61000-4-4• Surge EN 61000-4-5• RF Immunity EN 61000-4-6• Magnetic Fields Immunity EN 61000-4-8• .....................................................................................

1.2 EMC Standards1.2 EMC Standards GräbnerGräbner

Basic Standards EN DIN 61000-5-x

Generic Standards Hierarchy EN DIN 61000-6-x

Product Family Standards ( Limits )

Product Standards ( special ) first !!!! z.B. USV Norm, PC use this

standard