POLE PIECE FOR USE AT MEDIUM VOLTAGES AND METHOD OF ITS MANUFACTURE Russian patent published in 2017 - IPC B29C45/14 H01H33/662 

FIELD: electricity.

SUBSTANCE: pole piece has insulating coating that is made of a thermoset or thermoplastic material in which the transition areas between the materials and the relief structures of the vacuum circuit-breaker and/or the connection terminals are coated with the insulating coating. In order to improve the process of manufacturing and obtaining a reproducible dielectric with the required characteristics, the transition areas are arranged between the plastic piece and the contact part of the pole piece and they are made flat, so that they do not have rounded edges and/or ledges.

EFFECT: facilitating the separation of the finished pole piece from the mould due to the tight closing of the joint between the elements.

10 cl, 4 dwg