Multifunctional low-voltage testing instrument

A test instrument, multi-functional technology, applied in the direction of multi-tester circuits, etc., can solve the problems of increased maintenance preparation work, insufficient use of manpower and time, and only one item can be tested, so as to achieve convenient test work, The effect of reducing test equipment and facilitating testing

Inactive Publication Date: 2014-03-05
STATE GRID CORP OF CHINA +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The maintenance of equipment in the power system requires a lot of maintenance equipment and instruments because there are many maintenance items, and sometimes one instrument can only detect one item
Every time we go out for maintenance, we have to bring a lot of maintenance equipment and instruments, so that our limited manpower and time cannot be fully utilized, which greatly increases our maintenance preparations

Method used

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  • Multifunctional low-voltage testing instrument
  • Multifunctional low-voltage testing instrument
  • Multifunctional low-voltage testing instrument

Examples

Experimental program
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Embodiment

[0024] Example: Combine Figure 8 , the multifunctional low-voltage testing instrument of the present embodiment, its circuit principle comprises:

[0025] A correction circuit connected to the shift circuit and amplifying, rectifying, and filtering the analog voltage signal transmitted by the shift circuit; a modulus for receiving the analog voltage signal transmitted by the correction circuit and converting the analog voltage signal into a digital voltage signal conversion circuit; an intelligent display module for receiving the digital voltage signal transmitted by the analog-to-digital conversion circuit and processing and displaying the digital voltage signal; a current-voltage for measuring current and converting the measured current signal into an analog voltage signal Conversion circuit; R / V and V / V conversion circuits for testing voltage and resistance and converting the measured voltage and resistance signals into analog voltage signals; phase sequence discrimination...

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Abstract

The invention discloses a multifunctional low-voltage testing instrument. The multifunctional low-voltage testing instrument comprises a current-voltage conversion circuit, an R/V or V/V conversion circuit, a phase sequence distinguishing circuit and a temperature-voltage conversion circuit, wherein the current-voltage conversion circuit, the R/V or V/V conversion circuit, the phase sequence distinguishing circuit and the temperature-voltage conversion circuit are connected with a gear shifting circuit independently, and the gear shifting circuit is connected with an analog-to-digital conversion circuit after passing through a modifying circuit. The multifunctional low-voltage testing instrument further comprises an intelligent display module of a display screen, wherein the intelligent display module is connected with the analog-to-digital conversion circuit. The multifunctional low-voltage testing instrument is characterized in that the functions are complete. The multifunctional low-voltage testing instrument has all the functions of clamp meters of the similar types, the digital display phase sequence distinguishing function and the semiconductor rapid temperature measurement function and integrates a tong-type ammeter, a alternating-current and direct-current voltmeter, a live wire distinguishing device, a temperature measuring instrument and a phase sequence meter.

Description

Technical field: [0001] The invention relates to a multifunctional low-voltage testing instrument. Background technique: [0002] The maintenance of equipment in the power system requires a lot of maintenance equipment and instruments because there are many maintenance items, and sometimes a kind of instrument can only detect one item. Every time we go out for maintenance, we have to bring a lot of maintenance equipment and instruments, which makes our limited manpower and time not fully utilized, and greatly increases our maintenance preparations. In many years of work practice, it is found that some instruments for maintenance are very similar. If some functions are gathered together to make a multi-purpose instrument, it will not only reduce the number of equipment to be carried out, save time and effort, but also improve work efficiency. Invention content: [0003] In order to overcome the defects of the prior art, the object of the present invention is to provide a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R15/12
Inventor 张陆胜韩传喜陈贵亮章海波武怀鹏张维静任敬吴越吴航
Owner STATE GRID CORP OF CHINA
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