Patent ID: 9123490
Filing Date: 2015-09-01
Classification: H01H

Abstract:
1. A vacuum interrupter, comprising: a housing having two insulating housing regions formed and disposed symmetrically with respect to a central plane, each of said two insulating housing regions having a plurality of insulating housing parts and further housing part; shielding elements extending into an interior of the vacuum interrupter and disposed between respectively adjacent ones of said insulating housing parts and between said insulating housing parts and respectively adjacent ones of said further housing parts, said shielding elements having geometric dimensions determined depending on a voltage applied and a critical field strength between adjacent ones of said shielding elements, said shielding elements having bent ends, said geometric dimensions selected from the group consisting of a distance d a contact system; and said shielding elements disposed adjacent said insulating housing parts disposed furthest removed from said contact system have the distance S from said insulating housing parts and the distance d adhere to a maximum voltage difference ΔU max at said furthest removed insulating housing part and the critical field strength, the critical field strength resulting from field computations of the vacuum interrupter, and the maximum voltage difference ΔU max resulting from where α: is a coupling factor being a measure of what proportions constitutes a voltage drop across said insulating housing parts closest to said contact system, and ε r : is a dielectric constant of said insulating housing part depending on a number of said insulating housing parts.