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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: 2013-04-10
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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Embodiment Construction

[0029] 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.

[0030] 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.

[0031] 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

A power switch disposed in a housing includes a contact breaker configured to connect and disconnect a low-voltage switchgear from a power source supplying the low-voltage switchgear, a triggering device configured to disconnect the low-voltage switchgear in an overload event, a current detection device, a control device, a first evaluation device configured to evaluate an accidental arc overcurrent, and a second evaluation device configured to evaluate the accidental arc overcurrent. The power switch is configured to be activated via an overcurrent signal generated by an arc monitoring system in response to the accidental arc overcurrent. The overcurrent signal is linked to the at least one triggering signal. The second evaluation has a threshold above a threshold of the first evaluation device. The triggering device is configured to be activated via a turn-off pulse when a signal from the current detection device is above the threshold of the second evaluation device.

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 Patents(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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