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Intelligent low-voltage vacuum circuit breaker

A vacuum circuit breaker, an intelligent technology, applied in high-voltage air circuit breakers, circuits, high-voltage/high-current switches, etc., to solve problems such as the main contact being repelled, low pressure, salt spray, vibration and other environmental conditions constraints , to achieve high reliability, short full breaking time and good compatibility

Inactive Publication Date: 2013-07-10
SUZHOU CLINE ELECTRIC
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As a low-voltage electrical appliance, low-voltage circuit breakers are widely used in power distribution networks to protect lines and power equipment from overload, short-circuit and under-voltage. Most of the existing low-voltage circuit breakers use air circuit breakers to extinguish the arc method, because the contact arc extinguishing structure of the air circuit breaker is a compensation main contact with multi-channel parallel connection of the main contact, when a large short-circuit current passes through, the main contact will be repelled, and at the same time, it will be affected by high altitude, Constrained by environmental conditions such as low air pressure, salt spray, and vibration

Method used

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Embodiment Construction

[0012] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0013] see figure 1 and figure 2 , the embodiment of the present invention includes:

[0014] An intelligent low-voltage vacuum circuit breaker, comprising a casing 1, an insulating cylinder 2 and a vacuum tube 4, an insulating pull rod 5 is connected under the vacuum tube 4, a copper busbar 6 is fixed on the insulating cylinder 2; There are intelligent controller 3, undervoltage electromagnetic switch, flexible current transformer, spring operating mechanism, closing electromagnetic switch and opening electromagnetic switch, the undervoltage electromagnetic switch, flexible current transformer, closing electromagnetic switch and opening el...

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Abstract

The invention discloses an intelligent low-voltage vacuum circuit breaker which comprises a casing, an insulating sleeve and a vacuum tube. An insulating pull rod is connected under the vacuum tube, an intelligent controller, an under-voltage electromagnetic switch, a flexible current transformer and a spring operating mechanism are arranged on the casing, and the under-voltage electromagnetic switch and the flexible current transformer are arranged between the intelligent controller and the spring operating mechanism. The spring operating mechanism is connected with the insulating pull rod. By means of he mode, the intelligent low-voltage vacuum circuit breaker can achieve complete zero flashover and is compact in structure, high in reliability, short in overall break time and good in compatibility.

Description

technical field [0001] The invention relates to the field of low-voltage circuit breakers, in particular to an intelligent low-voltage vacuum circuit breaker. Background technique [0002] As a low-voltage electrical appliance, low-voltage circuit breakers are widely used in power distribution networks to protect lines and power equipment from overload, short-circuit and under-voltage. Most of the existing low-voltage circuit breakers use air circuit breakers to extinguish the arc method, because the contact arc extinguishing structure of the air circuit breaker is a compensation main contact with multi-channel parallel connection of the main contact, when a large short-circuit current passes through, the main contact will be repelled, and at the same time, it will be affected by high altitude, Constrained by environmental conditions such as low air pressure, salt spray, and vibration. Contents of the invention [0003] The technical problem mainly solved by the prese...

Claims

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Application Information

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IPC IPC(8): H01H33/66H01H33/666
Inventor 董正武穆玉荣
Owner SUZHOU CLINE ELECTRIC
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