Shielding of magnetic fields during high voltage live-line maintenance

In terms of electrical safety, electric shock prevention and arc protection are the two most common topics. In such special fields like live-line maintenance - especially at high voltage levels - some “invisible” sources of danger also occur. Long-term health effects of extra-low frequency electric and magnetic fields are mostly unknown, yet. One of the aims of electrical engineering is to keep even the occupational values of these fields below the limits during any time and type of live-line activities. Effective shielding of electric fields can be achieved by conductive clothing acting as Faraday-cages; this paper focuses on the critical points of high voltage LLM in terms of the protection against magnetic fields.