FIELD: electrical engineering.
SUBSTANCE: proposed contact section designed for use in contact system for current interruption in distribution network at operating voltages up to 27 kV has contact holder with hollow cylindrical part of wall as well as base wall and contact disk longitudinally disposed opposite base wall. Slits with rounded edges are provided for producing magnetic field, their radius being chosen depending on distribution network voltage U, kV, from following expression: R ≥ 2 × 10-4U2 + 8.5 × 10-3U + 0.34, where R is given in millimeters.
EFFECT: ability of preventing local voltage peaks at slit edges and ensuring extra-high dielectric strength.
10 cl, 2 dwg
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