DIN EN IEC 62822-3:2024-03

This document specifies procedures for the assessment of human exposure to magnetic fields produced by resistance welding equipment. It covers non-thermal biological effects in the frequency range from 0 Hz to 10 MHz and defines standardized test scenarios. This document aims to propose methods for providing EMF exposure data that can be used to assist in the assessment of the workplace, especially when the conditions of use of the equipment are not known. When these are technically constrained (for example, a double hand control imposes the position and posture of the user), the data can be directly exploitable if they fall within the scope specified by the manufacturer or the integrator. The document contains basic assessment procedures for the direct effects of electromagnetic fields. The assessments are made either on the basis of basic restrictions or on the basis of derived reference values. Several procedures for assessing EMF exposure are proposed, from simple to sophisticated. Conversely, the latter is also the most precise. The standard differs from DIN EN IEC 62822-3 (VDE 0545-24):2018-09 as follows: a) inclusion of uncertainties in the results of the assessment; b) simplification of the procedures for exposure assessment. Generally speaking, this document applies to equipment in which the welding current flows in a circuit whose geometry cannot be changed, regardless of the welding power source technology (for example, LF-AC, MF-DC for spot or seam welding or capacitive discharge for stud welding).