DIN CLC/TR 62271-208:2012-05

This Technical Report contains practical guidance for the evaluation and documentation of the external electromagnetic fields which are generated by HV switchgear assemblies and HV/LV prefabricated substations. Basic requirements to measure or calculate the electric and magnetic fields are summarised for switchgear assemblies covered by IEC 62271-200 and IEC 62271-201, and for prefabricated substations covered by IEC 62271-202. The methods described in this Technical Report refer to three-phase equipment. However, the methodology may be used correspondingly for any single- or multi-phase equipment covered by this Technical Report. The electromagnetic fields which are generated by harmonics or transients are not considered in this Technical Report. However, the methods described are equally applicable to the harmonic fields of the power-frequency. This Technical Report covers evaluation under factory or laboratory conditions before installation. The electric and the magnetic fields can be evaluated either by measurements or by calculations. Where practicable, the methods described in this Technical Report may also be used for installations on site. It is not within the scope of this Technical Report to specify limit values of electromagnetic fields or methods for the assessment of human exposure. The responsible committee is Subcommittee UK 432.2 "Typgeprüfte Hochspannungs-Schaltanlagen" ("Type-tested controlgear") of the DKE (German Commission for Electrical, Electronic and Information Technologies) at DIN and VDE.