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This paper describes a newly developed 72/84‐kV dry air‐insulated dead tank vacuum circuit breaker (VCB). VCB technology, which is essential for SF6 gas‐free equipment, has made advances in the fields of high‐voltage, large current interruption and environment‐conscious design. Light weight, decreased size, and reduced operating energy have been achieved by the new design. From the viewpoint of insulation,...
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