Solid insulator-type vacuum switch gear

US4618749A · kind A · utility

Assignee

• VEB Otto-Buchwitz Starkstrom-Anlagebau Dresden · DE

Inventors

• Klaus Böhme · Dresden, DE
• Wolfgang Beyer · Hersbruck, DE
• Gunter Seibt · Eichwalde, DE
• Michael Digmayer · Döbeln, DE

Key dates

• Filing date: Sep 18, 1985
• Grant date: Oct 21, 1986
• Expiry date: Sep 18, 2005

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01H2033/66284
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A vacuum switching apparatus having a pair of terminal members extending from a housing made from a fully solid insulating material such as epoxy resin, and forming an outer housing for the vacuum switching apparatus, into which a vacuum switching chamber is placed housing a fixed and a movable contact member, the movable contact member extending through metallic bellows into a sliding contact and into the coupling terminal, wherein a pair of control electrodes each being conductively coupled to a different one of the terminal members is embedded into the fully solid insulating housing and lying at the potential of the respective terminal members, a further control electrode placed in the insulating housing and lying in a region so that it will assume an intermediate potential between the terminal potentials and the ground potential and wherein further a grounded outer metallic casing encloses insulating housing.