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Drive mechanism for medium voltage fuse switch and corresponding medium voltage fuse switch

A technology of driving mechanism and fuse switch, which is applied in the direction of power device, electric switch, contact operating mechanism, etc. inside the switch

Active Publication Date: 2010-11-10
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] A further problem stems from the speed requirements for the opening / closing operation of the switch - this involves dimensioning the springs precisely and testing them accurately
[0006] Furthermore, the characteristics of the spring will change during the operating life, thereby also reducing the speed characteristics of the associated switch below unacceptable values

Method used

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  • Drive mechanism for medium voltage fuse switch and corresponding medium voltage fuse switch
  • Drive mechanism for medium voltage fuse switch and corresponding medium voltage fuse switch
  • Drive mechanism for medium voltage fuse switch and corresponding medium voltage fuse switch

Examples

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Embodiment Construction

[0028] Referring to the accompanying drawings, a driving mechanism for a medium voltage fuse switch according to the present invention, generally indicated by reference numeral 1, generally includes a base plate 10 and a front plate 11 defining an inner space. There may also be additional plates, such as plate 13 , between the base plate 10 and the front plate 11 . The drive mechanism also includes several components (which may be of conventional type and will not be described in detail) for connecting it to a medium voltage switch.

[0029] an operating shaft 2 and a power shaft 3 are accommodated in said interior space and are mounted coaxially along a first longitudinal axis, said power shaft 3 being operatively connectable to the kinematic chain of a medium voltage fuse switch by conventional connection systems, to actuate the open / close operation of the switch. The operating shaft 2 has a head 20 connectable through a hole provided on the front plate 11 of the drive mech...

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PUM

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Abstract

The present invention discloses a drive mechanism for a medium voltage fuse switch and a medium voltage fuse switch including the same. The drive mechanism comprises: a base plate and a front plate which defines an internal space housing an operating shaft and a power shaft, coaxially mounted along a first longitudinal axis, the power shaft being operatively connectable to a kinematic chain of a Medium Voltage fuse, the operating shaft having a head connectable to an operating handle for manual actuation of said operating shaft; a spring assembly which comprises a first and a second spiral springs having a first end operatively coupled to said operating shaft, said spiral springs being loaded by rotation of said operating shaft and actuating said power shaft when released; latching means for latching said power shaft comprising a first and a second latching arm positioned on said power shaft; first and second release means for unlatching said power shaft and allowing rotation thereof, the first release means allowing a rotation of said power shaft in an opposite direction with respect to said second release means.

Description

technical field [0001] The present invention relates to a drive mechanism for medium voltage switches with improved characteristics, in particular to a drive mechanism for medium voltage fuse switches with improved characteristics. For the purposes of this application, the term "medium voltage" refers to applied voltages in the range between 1KV and 52KV. Background technique [0002] Medium voltage switches, in particular medium voltage fuse switches, are well known in the prior art and generally include a drive mechanism operatively connected to and actuating a kinematic chain of the switch for Open and close the contacts of the switch. Due to the speed requirements for performing the opening / closing operation, mechanical devices are usually used to actuate the kinematic chain of switches. In most cases, the drive mechanism is based on a spring, which is loaded prior to performing the opening / closing operation; when the spring is released, the drive mechanism transmits t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H3/30
CPCH01H3/3042
Inventor F·贝洛尼
Owner ABB (SCHWEIZ) AG
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