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Drive unit

A driving unit and driver technology, which is applied in the direction of contact drive mechanism, electrical components, power device inside the switch, etc. It can solve the problems of insufficient SF6 gas and incomplete blowing volume, etc.

Inactive Publication Date: 2008-05-28
ABB TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] If the SF6 circuit breaker is switched off quickly after it is switched on, there is a risk that the blowing volume will not be fully filled, resulting in insufficient SF6 gas for blowing out the arc

Method used

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Experimental program
Comparison scheme
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Embodiment Construction

[0087] Fig. 1 is a schematic diagram of the first embodiment of the drive unit of the present invention, with the circuit breaker turned on. The drive 10 actuates a likewise schematically shown circuit breaker 24 via a translationally movable transmission rod 12 and via a schematically shown line of action 22 . In this illustration, the circuit breaker 24 is opened and the drive lever 12 is in the first end position.

[0088] The drive 10 is a hydraulic elastic energy storage drive. However, other types of drivers may also be used.

[0089] The circuit breaker 24 is a high-voltage circuit breaker for a voltage of 100kV-400kV. The circuit breaker 24 may also be a medium voltage circuit breaker for a voltage of 1 kV-100 kV, or a low voltage circuit breaker for a voltage lower than 1 kV, or a high voltage circuit breaker for a voltage higher than 400 kV.

[0090] A guide rail 14 is installed on the transmission rod 12 perpendicular to its moving direction. The first drive lin...

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PUM

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Abstract

The unit has a drive (10) for operation of a power switch (24), and a position detector(54) for detecting ON-position of the power switch. The drive activates the position detector by a mechanical gear. The gear has a spring unit(32,44,50,80), which is arranged in a movement transmission path between the drive(10) and the position detector(54) in such a manner that the spring unit receives an elastic deformation during closing of the power switch. The spring unit(32,44,50,80) is designed as a helical spring (32), a torsion rod and an elastically deformable lever.

Description

technical field [0001] The invention relates to a drive unit for a circuit breaker, in particular for a high-voltage circuit breaker, according to the preamble of claim 1 . Background technique [0002] A drive unit for a high-voltage circuit breaker comprises, for example, a drive as disclosed in EP 0 829 892 A1. Such drives for high-voltage circuit breakers include a hydraulic system acting on a transmission rod used to operate the circuit breaker. [0003] The drive unit also includes at least one position indicator for detecting the position of the circuit breaker, in particular for detecting the switch-on position. The drive actuates the position indicator by means of a mechanical transmission, such as a linkage. [0004] Faster closing and opening operations (hereinafter referred to as on-off cycles) can be used to test circuit breakers after production and when commissioning is performed. In the process, the drive unit first closes the open circuit breaker, ie it p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H9/16H01H3/32H01H33/42H01H3/22H01H33/28
CPCH01H9/16H01H71/04H01H33/28
Inventor F·-J·科伯
Owner ABB TECH AG