Disconnector contact drive devices for switching installations which supply and distribute power

US6486420B1 · kind B1 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Martin Boettcher · Berlin, DE
• Marcus Kampf · Berlin, DE

Key dates

• Filing date: Apr 9, 2001
• Grant date: Nov 26, 2002
• Expiry date: Apr 9, 2021

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02B11/127
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

Disconnector contact drive devices for switchgear for power supply and distribution are described, in particular for air-insulated medium-voltage switchgear, having movable pole units. In where in a first movement sequence, the disconnector contacts are separated from fixed mating contacts of the switchgear. In a second movement sequence, the pole units are displaceable to achieve the isolating distance, and the disconnect contacts are moved to disconnect them by force components acting in the x/y directions. The disconnector contact drive devices are equipped with linear guide shafts. The pole units contain pole box frames which are linearly movable along the guide shafts from an ON position stop to an OFF position stop due to the forces acting on the toggles. The toggles each have four pivot bearings. The first pivot bearing is coupled to a linear actuator shaft, the second and third pivot bearings are bearings of the toggle and the fourth pivot bearing is connected to the pole box frame The linear actuator shafts are connected to the rotary actuator shafts by corner gears.