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Circuit breaker

A circuit breaker and volume technology, applied in the direction of high-voltage air circuit breakers, circuits, electrical components, etc., can solve problems such as the adverse effects of the arc extinguishing process, and achieve the effects of good cooling, low cost, and high breaking volume.

Active Publication Date: 2004-05-19
HITACHI ENERGY SWITZERLAND AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, it should be avoided that too high a counterpressure from the exhaust volume acts on the arc zone and adversely affects the arc extinguishing process

Method used

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Embodiment Construction

[0021] Throughout the figures, parts having the same function are designated by the same reference numerals; parts not necessary for a direct understanding of the invention are not shown or described.

[0022] The circuit breaker can have one or more series-connected interrupters filled with insulating gas, which operate according to one of the conventional switching principles, that is, for example as self-blowing interrupters, as with at least A self-blowing interrupter for an additional puffer unit, or work as a simple puffer switch. The circuit breaker can, for example, have a current contact structure similar to that shown in document EP 0 836 209 A2, but one or both current contacts can also be designed to move. The circuit breaker can be designed, for example, as an outdoor switch, as part of a gas-insulated metal-enclosed switchgear or as a grounded case circuit breaker. Figure 1 shows a simplified schematic partial section through the venting area of ​​an arc extingu...

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PUM

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Abstract

Provided is a power circuit breaker with high power breaking capacity, efficiently exhausting arc gas with high temperature from an arc chamber.The power circuit breaker comprises an arc extinction chamber having an arc chamber formed into nearly a radial symmetric shape, extending along a longitudinal axis line 1 filled with insulation gas. The extinction chamber has at least two contact members, out of which at least one contact member is formed into a pipe-shaped hollow contactor 2. the pipe-shaped hollow space is formed in order to release the gas with high temperature from the arc chamber to an exhaustion tab 10. In order to make the gas with high temperature radially deflect into the exhaustion tab 10, a deflection part 4 interlocking with at least one of first opening parts 6 is arranged at the side surface of the hollow contactor 2 facing the opposite side of the arc chamber. The exhaustion tab is communicated with an extinction chamber tab 14 through at least one of the second opening parts 13. Further, at least one intermediate tab 7 is formed between the hollow contactor 2 and the exhaustion tab 10.

Description

technical field [0001] The invention relates to a circuit breaker according to the preamble of claim 1 . Background technique [0002] Document EP 0 836 209 A2 discloses a circuit breaker that can be used in a high-voltage network. This circuit breaker has a rotationally symmetrical arc extinguishing chamber filled with an electronegative gas, such as sulfur hexafluoride (SF 6 ) gas as arc extinguishing medium and insulating medium. In the ON state, a conductive rod bridges the distance between the two main contacts of the interrupter, which is fixed for this type of circuit breaker. In the disconnected state, the conductive rod moves axially in one direction, while the two main contacts move jointly in the opposite direction. In this case, the conductive rod causes an arc between the two main contacts, which burns in an arc zone located between the main contacts until it is extinguished. [0003] The hot and ionized gases generated in the arcing region are discharged, p...

Claims

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Application Information

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IPC IPC(8): H01H33/02H01H33/70H01H33/76
CPCH01H33/76H01H33/7015H01H2033/888
Inventor M·克莱森斯S·格罗布叶向阳
Owner HITACHI ENERGY SWITZERLAND AG