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Method for determining the remaining service life of a switching device and corresponding device

A technique of switching equipment, equipment, applied in the time interval between two significant events. , especially a field used to measure and display the wear state of switchgear, which can solve the problem of not considering the wear of switchgear

Inactive Publication Date: 2008-08-06
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method only measures contact burnout, which does not take into account the wear of the switch mechanism

Method used

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  • Method for determining the remaining service life of a switching device and corresponding device
  • Method for determining the remaining service life of a switching device and corresponding device
  • Method for determining the remaining service life of a switching device and corresponding device

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Embodiment Construction

[0042]All diagrams illustrated below are specific to vacuum contactors. In recent years, vacuum contactors have proven to be an alternative to air switches. The operating cycles of vacuum contactors can advantageously reach several millions, making such contactors suitable for use in many technical fields.

[0043] figure 1 A typical design of a vacuum contactor with an associated drive mechanism is shown. The structural parts / structural components that generate the squeeze are: reversing lever, spring seat and movable tubular pin, accessory parts such as connection ends of conductive strips, rod seat, switch position indicator and associated fixed parts. At those locations indicated by the letters A to G, wear or plastic deformation occurs which either increases or decreases the amount of extrusion.

[0044] In the following, a vacuum contactor with an associated electromagnetic drive and a contactor mechanism connected thereto for connecting a single-pole or multi-pole ne...

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PUM

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Abstract

The invention discloses a method for deteramining the remaining service life of the switching device and the corresponding device. Known methods monitor the contact resilience during the displacement of the switching device actuator in order to determine the contact erosion of contact pieces and the remaining service life of the switching device. Two intervals in particular can be recorded during the displacement of the actuator in order to monitor the contact resilience. According to the invention, a separate sensor is provided to record and display the contact erosion and / or the mechanical wear of the switching device by the monitoring of the contact resilience, said sensor detecting at least one event in order to determine the time interval between two such events.

Description

technical field [0001] The invention relates to a method for determining the remaining service life of a switchgear, in particular for measuring and displaying switches, by monitoring the compression of a spring placed between a moving contact and a spring seat during movement of a switchgear drive mechanism. A method of state of wear of equipment wherein, for monitoring the amount of extrusion, at least one time interval between two significant events in the movement of the drive mechanism is measured. Furthermore, the invention relates to corresponding devices for carrying out the method. Background technique [0002] The remaining service life of a switchgear depends on the state of wear of the switchgear during its operational use. In the context described above, the state of wear of the switchgear is understood to be the determination of the wear of the contacts of the contactor and the circuit breaker and / or the wear of the switchgear mechanism. [0003] In switchgea...

Claims

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Application Information

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IPC IPC(8): H01H1/00
CPCH01H2071/044H01H1/0015
Inventor 诺伯特·埃尔斯纳彼得·海德德克·赫茨莱因哈德·梅尔
Owner SIEMENS AG