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Resistance welding is a joining process using high welding currents. These currents cause high magnetic fields in the surrounding of welding equipment. Considering the present discussion about national adaptations of the EU directive on electromagnetic fields, in the paper questions of assessment of the exposure to magnetic fields will be discussed, particularly with regard to low frequency-fields.
Resistance welding is commonly used in many branches of industry. To perform the welding process high welding currents up to about 100 kA are required which are supplied by dedicated power electronic converters in pulsed power operation. Concerning electromagnetic compatibility (EMC) aspects of such equipment the new European standard EN 50240 has to be taken into account. In the paper adapted noise...
Resulting from the connection between the change rate of a magnetic field and the induced currents in an exposed human body, pulsating magnetic fields have to be evaluated analysing the waveforms of the field or the field-generating current A corresponding assessment guideline is given in the German safety regulation on "Electromagnetic Fields" BGV Bll. Considering the specific output current...
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