Intelligent fuse

A fuse and intelligent technology, which is applied in the direction of electrical components, circuits, emergency protection devices, etc., can solve the problems of fuses and fuses without fuses, and achieve high performance and improve the effect of intelligence

Active Publication Date: 2014-08-13
苏州市南光电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no external display and alarm for the blown condition of the fuse in the current fuse

Method used

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  • Intelligent fuse

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Embodiment

[0029] The present invention describes an intelligent fuse whose control principle block diagram is as follows figure 1 As shown, the lower three-phase line of the fuse is connected, the smart fuse is equipped with an intelligent control unit, (the working power of the intelligent control unit is provided by the internal auxiliary power supply), and the lower three-phase line of the fuse is connected to the intelligent control The intelligent control unit includes a fuse state detection unit, a fuse current detection unit for detecting current in the fuse, and a central control unit. The detection results of the fuse state detection unit and the fuse current detection unit are all sent to this The central control unit connected to the two units, the central control unit issues instructions according to the test results.

[0030] The lower three-phase line of the fuse is connected to the intelligent control unit through the optocoupler isolation unit. The fuse status detection uni...

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Abstract

The invention discloses an intelligent fuse. A lower end three-phase line of the fuse is connected in, an intelligent control unit is arranged in the intelligent fuse, the lower end three-phase line of the fuse is connected in the intelligent control unit, the intelligent control unit comprises a fuse state detection unit, a fuse current detection unit used for detecting current in the fuse, and a central control unit, the detection result of the fuse state detection unit and the detection result of the fuse current detection unit are both sent to the central control unit connected with the fuse state detection unit and the fuse current detection unit, and the central control unit gives out an indication instruction according to the detection results. According to the intelligent fuse, the state of a fuse wire of a fuse body in the intelligent fuse can be monitored, an alarm is given when a state fault occurs, meanwhile, whether the actual fusing time of the fuse wire is judged according to current flowing in the fuse wire, and therefore an alarm is given in advance under the condition that the fuse wire may fuse, the intelligence of the fuse is improved, and the intelligent fuse can have higher using performance.

Description

Technical field [0001] The invention relates to a fuse, in particular to an intelligent fuse which can send out state failure alarms and pre-alarms. Background technique [0002] Fuse is a simple and effective protection for electrical appliances. It mainly plays a role of short-circuit protection in the circuit. The fuse is mainly composed of a melt and an insulating tube (insulating seat) for installing the melt. When in use, the principle of the fuse is to use the current flowing through the conductor to make the conductor heat, and the conductor melts after reaching the melting point of the conductor, so the circuit is disconnected to protect the electrical appliances and lines from being burned. It is an accumulation of heat, so overload protection can also be achieved. Once the melt is burned, the melt must be replaced. However, there is no external display and alarm for the fuse fusing condition of the current fuse. Summary of the invention [0003] The purpose of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H85/30H01H85/46
Inventor 李云宏李建国
Owner 苏州市南光电器有限公司
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