IEC 61000-4-9 Electromagnetic Compatibility (EMC) - Part 4-9: Testing and Measurement Techniques...
Pulsed Magnetic Field Background
According to IEC 61000-4-9, pulse magnetic fields are generated by lightning strikes on buildings and metal structures including aerial masts, earth conductors and earth networks and by initial fault transients in low voltage, medium voltage, and high voltage systems. This test is mainly applicable to products to be installed in electrical power plants (e.g. telecontrol centers close to switchgear). It is not relevant for distribution network equipment. The test is performed by applying 6.4/16 µs magnetic field pulses of defined strength to the equipment to be tested.
Electronic products in accordance with IEC 61000-4-9 are tested for immunity pulsed magnetic fields to ensure their continued reliable operation when placed in service in a very harsh environment. Although most electrical and electronic products will not have to be tested for pulse magnetic field immunity, the European Union’s EMC Directive may mandate this testing as a condition for obtaining the CE mark under special circumstances and for specific products before shipping to a member state of the European Union.
Recommended Bundle
For Pulse Magnetic Field Tests:
Haefely AXOS 5
Transient Generator
+
Haefely DIP 116
Automatic Dip Transformer
+
Haefely MSURGE
Antenna
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IEC 61000-4-9
Pulse Magnetic Field Testing System
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Applicable Standards
Although not currently required by generic immunity, product-specific, or product family standards, future standards may require pulse magnetic field tests be performed in accordance with Basic EMC Standards: IEC 61000-4-9 and EN 61000-4-9. Thermo KeyTek's application note, "EMC Standards Overview," provides an overview of European Standards for electromagnetic compatibility, describes
