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Switch installation with build-in electric arc releasing device

A release device, switchgear technology, applied to the setting of switchgear, switchgear, electrical components, etc., can solve the problems of no fault arc protection device and unsatisfactory

Active Publication Date: 2011-05-25
SIEMENS SWITCHGEAR LTD SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is basically no effective arc fault protection device at present, which cannot meet the requirements of the new international standard IEC62371-200, nor can it meet the relevant requirements of the national standard GB3906-2006

Method used

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  • Switch installation with build-in electric arc releasing device
  • Switch installation with build-in electric arc releasing device
  • Switch installation with build-in electric arc releasing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Please refer to FIG. 2 in conjunction with FIG. 1, the switchgear 100 of the present invention includes a housing 101, and the housing 101 is provided with a circuit breaker compartment 10, a bus compartment 20 and a cable compartment 30, wherein the circuit breaker compartment The chamber 10 is located at the bottom of the front side of the housing, and a circuit breaker 11 is arranged in the circuit breaker compartment, and the circuit breaker 11 has a pair of contact arms 12 for on-off operation. The cable compartment 30 is located at the rear bottom of the housing, and a current transformer 31 with a contact box is arranged in the cable compartment 30, and a cable connection 32 is provided on it. The busbar compartment 20 is located above the cable compartment 30 and has an upper branch busbar 21 and a contact box 22 inside, wherein the contact box 22 is used for the contact arm 12 of the circuit breaker 11 to operate. The casing 101 also has a pressure relief compa...

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PUM

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Abstract

The invention discloses a switch device having an internal electric arc releasing device. The switch device comprises a shell, wherein a circuit breaker compartment, a bus compartment and a cable compartment are arranged inside the shell; a pressure release compartment, a pressure release channel and a decompression device are also arranged inside the shell; the circuit breaker compartment, the bus compartment and the cable compartment are all communicated with the pressure release compartment and the pressure release channel directly or indirectly. When an arcing fault occurs, the reasonablepressure release channel can be formed by means of a plurality of pressure release doors among the compartments, and high-temperature high-pressure gas is guided to be progressively cooled and decompressed, reaches the pressure release channel and is discharged out of the switch device from the decompression device. Through experiments, the switch device of the invention reaches the IEC62371-200 and GB3906-2006 standards.

Description

technical field [0001] The invention relates to a switchgear in a power transmission and distribution system, in particular to a switchgear with an internal arc release device. Background technique [0002] Switchgear is a commonly used device in power transmission and distribution systems, which is mainly responsible for breaking current. In switchgear, arc faults sometimes occur due to component failures or operating errors. Although an arc fault occurs rarely, when it does, it can develop high pressure and high temperature in a short period of time. For example, in low-voltage switchgear, the fault arc will increase the temperature to 13000K within 10ms, and at the same time increase the pressure to about 2×10 within about 15ms 5 Pa~3×10 5 Pa. Components within the device, such as doors, can break free from their securing mechanisms and be thrown open under such high pressure. The high temperature also causes melting and evaporation processes to occur in the equipmen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02B13/025
Inventor 陈涟虎黄庆徐忆红
Owner SIEMENS SWITCHGEAR LTD SHANGHAI
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