FIELD: electrical engineering; grounding industrial units and electrical installations. SUBSTANCE: device has conductor running from industrial unit, grounding net driven in earth through certain depth, grounding frame placed under net over its perimeter at depth of hazard-zone radius where current may spread over earth surface. Grounding net and grounding frame are rigidly fixed together over their perimeters by means of vertical insulated conductors. EFFECT: reduced amount of excavation work. 4 dwg _
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