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Mechanical override device

A technology of machinery and equipment, which is applied in the field of undervoltage coils and circuit breakers, and can solve problems such as difficulty in assembling undervoltage coils for mechanical overriding equipment

Active Publication Date: 2012-05-02
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This means an unacceptably dangerous situation
[0009] Furthermore, the known mechanical override devices are very difficult to fit in aftermarket undervoltage coils and require significant structural changes to the undervoltage coil and even replacement and resizing of the undervoltage coil

Method used

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Examples

Experimental program
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Embodiment Construction

[0027] Referring to the drawings, there is shown a mechanical override device 1 which may be used in conjunction with a solenoid-driven control mechanism 2 of a switching unit 3 such as a circuit breaker 3 , in particular with an undervoltage coil 2 , the switching unit 3 is schematically shown in figure 2 , 3 and 11 in.

[0028] The mechanical override device 1 is particularly suitable for use in the medium / low voltage sector, ie for applications ranging from 1 kV up to a few tens of kV such as 30 kV.

[0029] The mechanical override device of the present invention can be manually operated for temporarily or permanently overriding the function of the undervoltage coil 2 normally used when a power supply occurs in the auxiliary power supply of the undervoltage coil 2 itself Open circuit breaker 3 in case of undervoltage condition; auxiliary power is usually derived from the main power supply. The mechanical override device 1 , also when experiencing an undervoltage conditi...

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PUM

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Abstract

A mechanical override device which is suitable for an undervoltage coil of a switching unit, is comprised of a first portion suitable for urging a plunger of the undervoltage coil in a first position which is taken by the plunger when the undervoltage coil is energized, and a second portion suitable for receiving an external movement command for imposing an operating movement to the first portion. The override device further comprises movement control means for controlling one or more cinematic parameters of the first portion so as to make the operating movement independent from the external movement command.

Description

technical field [0001] The present invention relates to a mechanical override device that may be used in conjunction with a solenoid driven control mechanism of a switching unit such as a circuit breaker, in particular an undervoltage coil. The mechanical override device according to the present invention can be manually operated for temporarily or permanently overriding the function of the solenoid-actuated control mechanism normally performed when an undervoltage condition occurs Intervention opens the circuit breaker and, also when experiencing an undervoltage condition, the mechanical override device enables the operator to actuate the circuit breaker, specifically to close the circuit. Background technique [0002] Mechanical override devices are particularly suitable for use in the medium / low voltage sector, ie for applications ranging from 1 kV up to tens of kV such as 30 kV. [0003] Such mechanical override devices are known for overriding the function of the under...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H3/28H01H71/24
CPCH01H83/12H01H71/52
Inventor 加布里埃莱·加斯帕里尼曼纽尔·戈蒂斯特凡诺·马戈尼
Owner ABB (SCHWEIZ) AG