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Power switch for preventing accidental arcs

A power switch and arc technology, which is applied in protection against overcurrent, parts and electrical components of emergency protection devices, etc., can solve the problems of expensive space occupation, accidental arc elimination module economy is not always reasonable, etc. The effect of shortening the cut-off time

Inactive Publication Date: 2010-03-24
KLOCKNER-MOELLER GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

while this takes up space and is expensive
Additionally, additional modules must be installed to eliminate accidental arcing
The extra expense of accidental arc suppression modules is not always justified financially

Method used

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  • Power switch for preventing accidental arcs
  • Power switch for preventing accidental arcs
  • Power switch for preventing accidental arcs

Examples

Experimental program
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Effect test

Embodiment Construction

[0028] Each drawing shows a schematic construction of the present invention in the form of circuit logic. The elements of the circuit arrangement may be discrete electronic components or integrated electronic components (microprocessors). In particular, programmable digital electronics may be used instead of fixed hardware configurations (eg formed as programmable controllers). In this way, various changes in programming can be easily made.

[0029] The elements in the drawings are parts of the power switch in the housing, excluding the arc detection unit LBS and the arc elimination module 12LBQ located outside the power switch.

[0030] Like all mains switches, the construction according to the invention includes: a contact breaker module for connecting or disconnecting the power supply supplying the low voltage switchgear; a trigger module 70 for disconnecting the switchgear in case of overload; current sensing A module 80 (eg a Rogowski coil) for detecting the conductor c...

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Abstract

The invention relates to a power switch configured for the purposes of preventing accidental arcs in a low-voltage switchgear. The invention provides the power switch with an overcurrent evaluation means responding to an accidental arc produced in the switchgear. An overcurrent signal 104 arriving from the arc monitoring system LBS (occurrence of the flash of an accidental arc) is linked to the signal 103 for triggering the control means via a first evaluation means S1, 182, 63 for evaluating the intensity of the overcurrent originating from the accidental arc. The means 70 for triggering thepower switch is activated, on issuing of a turn-off pulse 200, merely if the signal 180 from the current detection means 80 is above a preadjustable threshold S1. The invention allows the power switch to cut off more rapidly an overcurrent based on an accidental arc.

Description

technical field [0001] The present invention relates to a multi-pole power switch in a housing, comprising: a breaker module for connecting or disconnecting a power supply supplying a low-voltage switchgear; a trigger module for disconnecting the low-voltage switchgear in case of overload; A current detection module for detecting a conductor current powering the low voltage switchgear; a preferred electronic control module for processing the detected conductor current and generating at least a trigger signal for the trigger module. Background technique [0002] The breaking capacity and breaking time of a power switch in the event of an overcurrent, short circuit or accidental arc depends on various parameters. The cut-off process includes trigger time, intrinsic time and cut-off time. The trigger time is the time from the occurrence of the change factor that causes the trigger to the start of the trigger process, such as the release of the switch lock. This is followed by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H1/00H02H3/08
CPCH02H3/023H02H3/08H02H1/0023
Inventor S·达尔A·舒马赫W·瓦格纳
Owner KLOCKNER-MOELLER GMBH
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