Multifunctional leakage current indicator of insulator
A leakage current and indicator technology, which is applied in the direction of instruments, measuring electricity, and measuring electrical variables, etc., can solve the problem of not being able to completely eliminate the blindness of cleaning work, not being able to distinguish between flashover faults and lightning strike faults, and not being able to give warning signals in time, etc. problems, to achieve the effect of improving maintenance work efficiency, reducing maintenance labor intensity, and complete functions
Inactive Publication Date: 2009-11-25
鼎阳智电慧服科技股份有限公司
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Problems solved by technology
[0003] The insulator leakage current indicator is a device to help people judge the insulation performance of the insulator, but the existing insulator leakage current indicator can only give a corresponding indication when a flashover current occurs, and when the insulation performance of the insulator deteriorates, a flashover fault is about to occur However, the warning signal cannot be given in time, so the blindness of the cleaning work cannot be completely eliminated.
In addition, the existing insulator leakage current indicators cannot distinguish between flashover faults and lightning strike faults, and the structure of the indicators is complex and inconvenient to install
Method used
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[0015] see figure 1 , three fuse indicators with different fusing current setting values in the present invention are connected in series with the third one after two are connected in parallel, and each fuse indicator has a ring-shaped metal buckle 4 at the end of the lead wire at both ends For installation and fixing, the leakage current of the insulator flows through the fuse 9 in the three fuse indicators at the same time, and the fuse 9 inside the fuse indicator is used to detect the leakage current between the upper and lower ring metal buckles 4 and judgment. The fusing currents of the three melts 9 respectively correspond to the leakage current, flashover current and lightning current of the insulator when a flashover fault is about to occur. When the leakage current of the insulator is close to the flashover current, the melt in the critical current indicator 1 is fused, and the insulating bottom plate 7 of the critical current indicator 1 is separated from the insu...
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A multifunctional leakage current indicator of insulator is used for detecting the leakage current of insulator. The technical solution of the invention is as follows: the multifunctional leakage current indicator of insulator comprises a critical current indicator which is composed of an insulating baseboard, flux and an insulating cover; the insulating cover covers on the insulating baseboard; the flux has a strip shape and has a lower end fixed to the center of the insulating baseboard and an upper end fixed to the top of the insulating cover; the lead wire at one end of the flux is electrically connected with the earth wire or the high-voltage wire; the lead wire at the other end is closely connected with the end surface of the insulator; and the chamber which is surrounded by the insulating cover and the insulating baseboard is also provided with a color marker that is fixedly connected with the insulating baseboard. The multifunctional leakage current indicator of insulator according to the invention has the following advantages: simple structure, convenient installation, capability for providing a plurality of state information for the working personnel, thorough elimination of the blindness of insulator cleaning and maintenance work, increased operating efficiency of the maintenance and reduced labor intensity of maintenance.
Description
technical field [0001] The invention relates to an improved insulator leakage current indicator, which can give different indication signals according to different leakage currents, and belongs to the technical field of detection. Background technique [0002] High-voltage insulators are widely used in transmission lines in the power sector, and their insulation performance is directly related to the safe operation of transmission lines. With the increase of dirt and dust thickness on the surface of insulators, the insulation performance of insulators will continue to decline. When the dust thickness reaches a certain level, the insulator will have a flashover short circuit fault. Therefore, it is necessary to clean the dust on the surface of the insulator in time. [0003] The insulator leakage current indicator is a device to help people judge the insulation performance of the insulator, but the existing insulator leakage current indicator can only give a corresponding ind...
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IPC IPC(8): G01R31/02G01R31/12
Inventor 董清颜湘武
Owner 鼎阳智电慧服科技股份有限公司