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Electrical interruption device

An electrical and breaking position technology, applied in the direction of electrical components, high-voltage air circuit breakers, circuits, etc., can solve the problem of not considering the structure and shape of the contact electrode, modification, etc.

Active Publication Date: 2019-08-23
S&C ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, modifications to the structure and shape of the contact electrodes themselves are generally not considered

Method used

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Examples

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Embodiment Construction

[0060] Figure 4 A simple linear interrupter comprising contacts 41 housed within a housing 43 is shown in partial cross-section. The enclosure is usually evacuated and is sometimes called an enclosure. The vacuum interrupter comprises an electrode or contact 41 having a slot 42 oriented to generate a magnetic field across the width of the contact such that when current passes through the contact and the contact separates, an arc is formed. Accordingly, the electrical contacts 41 are designed to mechanically engage and disengage to perform a switching function. Usually, this movement is allowed by bellows or diaphragm means 44 without breaking the seal of vacuum envelope 43 . In the example shown, the arc is moved along the length of the contacts by a motor effect. This length is chosen to be sufficient to control the arc until it extinguishes. This may be called a transverse field linear contact and is somewhat equivalent to a radial field circular contact. The contacts 4...

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Abstract

An electrical interrupter device for switching a short-circuit electrical current in an electric circuit is disclosed. The device comprises a vacuum evacuated housing (58); first and second electrodes(54,56) at least partially located within the housing. The first and second electrodes (54,56) are separated by a rail gap. A third electrode (52) moveable relative to the first and second electrodes(54,56) between a closed circuit position and an open circuit position is provided, whereby an electrical arc is generated between the third electrode (52) and at least one of the first and second electrode (54,56) during said movement. Once generated, the arc is directed by the first and second electrodes (54,56) away from the third electrode (52).

Description

technical field [0001] The invention relates to an electrical interruption device. In particular, it relates to an evacuated electrical interruption device for switching a short circuit current in an electrical circuit. Background technique [0002] Electrical interruption or switching devices are used in medium voltage electrical equipment. The most widely used are vacuum switching devices, often called vacuum interrupters. Vacuum switching devices are typically used as part of a switching device, which is a broad term for a combination of electrical components used to control, protect and isolate electrical equipment and circuits. Switchgear typically includes a switching device, such as a vacuum interrupter, an actuator for applying a force to switch the switching device, and a detection system for detecting switching requirements (including faults) in electrical equipment / circuits. [0003] Vacuum interrupters are well known for switching high currents in power transm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/664H01H9/38H01H33/12H01H33/20
CPCH01H9/38H01H33/12H01H33/20H01H33/664H01H33/08
Inventor 莱斯利·福尔金汉
Owner S&C ELECTRIC