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Three-positions disconnector for medium voltage panels

A isolating switch, three-position technology, applied in the field of three-position isolating switches, can solve the problems of increasing the complexity of the panel, the isolating switch machinery is not very compact and simple, and achieves the effect of space saving and effective

Active Publication Date: 2010-12-08
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] It should be noted that the disconnect switch itself is generally not very compact and simple mechanically, thereby further increasing the complexity of the panel

Method used

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  • Three-positions disconnector for medium voltage panels
  • Three-positions disconnector for medium voltage panels
  • Three-positions disconnector for medium voltage panels

Examples

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Embodiment Construction

[0035] Refer to the isolating switch showing the three-phase system figure 1 , the three-position disconnector according to the invention, collectively designated by reference number 1, comprises an insulating housing 10, 20, 30 for each of the three phases. Each housing 10, 20, 30 comprises a first cavity (11, 21, 31 respectively) and figure 1 not visible in but in Figure 4-8 The second cavity 12 visible in.

[0036] refer to Figure 4 with Figure 5 , the first cavity 11 and the second cavity 12 are separated by an insulating partition 13 extending through the entire body of the housing 10 . The first cavity 11 and the second cavity 12 communicate through the through hole 14 existing in the partition 13 between the first cavity 11 and the second cavity 12 .

[0037] Such as Figure 1~3 As shown, the first cavities 11 , 21 and 31 accommodate for each phase a second fixed contact 15 , 25 , 35 electrically connected to a corresponding branch 41 , 42 , 43 of the busbar sy...

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PUM

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Abstract

A three-positions disconnector comprising, for each phase an insulating casing which comprises a first and a second cavity separated by an insulated partition wall, a through hole being present in said partition wall between said first and second cavity. The first cavity houses: a first fixed contact electrically connected to a corresponding branch conductor (of a bus-bar system; at least a portion of a movable contact pivotally mounted on a support positioned in the first cavity and electrically connected to a first electrical terminal positioned in said second cavity. The disconnector further comprises, for each phase, a second fixed contact suitable for ground connection. Also, the disconnector comprises an operating mechanism and a kinematical chain linking the movable contact with the operating mechanism; the movable contact is movable between a first position in which it is coupled to the first fixed contact, a second position in which it is isolated from both the first and second fixed contacts, and a third position in which it coupled to the second fixed contact.

Description

technical field [0001] The present invention relates to a three-position disconnect switch for medium voltage applications. In medium voltage panels, in particular in medium voltage panels in which the circuit breakers are in a so-called fixed arrangement, the disconnector of the invention finds a convenient application. A medium voltage panel comprising a three-position disconnect switch of the type disclosed herein is also part of the invention. For the purposes of this application, the term medium voltage refers to applications in the range between 1 kV and 52 kV. Background technique [0002] Medium pressure panels are well known in the prior art. They usually consist of enclosures that are internally divided into circuit breaker bays, busbar bays, feeder / cable bays and control boxes. Metallic isolation between compartments is generally foreseen. [0003] A circuit breaker is generally located in a circuit breaker bay and, depending on the application, it can have a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02B13/02H01H33/02H01H31/28
CPCH01H31/28H01H31/003H01H9/0072
Inventor D·科尔蒂
Owner ABB (SCHWEIZ) AG
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