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High-voltage charge indicator with electric field effect

A high-voltage live, electric field effect technology, applied in the direction of measuring current/voltage, instruments, measuring electrical variables, etc., can solve the problems of high cost of supporting insulators, harm to instruments and operators, and complicated processes, and achieve significant economic and social benefits. , strong adaptability, and the effect of improving reliability

Inactive Publication Date: 2004-06-02
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned support insulator is not only expensive and complicated in process, but also needs to invest in special manufacturing equipment and purchase special metal-ceramic capacitor rods; the signal terminal of the insulator outputs a strong voltage signal with a voltage higher than 100 volts. When an overvoltage fault occurs on the busbar of the power system, the output voltage of the signal terminal of the insulator can be as high as thousands of volts, which can easily cause potential danger to the equipment and operators; cause major safety accidents

Method used

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  • High-voltage charge indicator with electric field effect
  • High-voltage charge indicator with electric field effect
  • High-voltage charge indicator with electric field effect

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Embodiment

[0016] The structure of the high voltage charged indicator with electric field effect is shown in Figure 1, figure 2 As shown, it consists of a support insulator 1, a signal amplification circuit 4, a signal identification control circuit 7 and a charged indicating circuit 8. The supporting insulator refers to the supporting insulator under the three-phase incoming and outgoing busbar in the high-voltage switchgear on the engineering installation site or on the production line of the electrical assembly workshop. The lower end of the supporting insulator is provided with a terminal; The identification control circuit is composed of a single-chip microcomputer chip or a NAND gate chip, and the live indication circuit is composed of a light-emitting diode LED and a seven-segment digital tube S1. The supporting insulator 1, the signal amplifying circuit 4, the signal identification control circuit 7, the charging indicator circuit 8 and the specific connection methods of each com...

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Abstract

A high-voltage charge indicator of field effect is composed of bearing insulator, signal recognization controller, amplifier between said insulator and controller, and charge indication circuit composed of LED and seven-segment digital tubes. Its advantages are high reliability, safety and operability.

Description

1. Technical field [0001] The invention relates to a high-voltage charged indicator, which belongs to a high-voltage detection device. 2. Background technology [0002] Power plants, substations and distribution stations in the power system widely use high-voltage switchgear (high-voltage electrical equipment) to control the transmission of power. In order to protect the safety of operators and high-voltage electrical equipment, and prevent serious accidents such as personal injury and switchgear damage caused by misoperation of operators in the charged state, the power system requires monitoring of the charged state of the three-phase incoming and outgoing busbars of the high-voltage switchgear, and giving Live warning. [0003] The high-voltage live indicator is a special indicating instrument installed on the panel of the high-voltage switchgear to indicate whether there is high voltage in or out of the busbar of the high-voltage switchgear. (Germany) A. Schwaber's "Hig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/155
Inventor 刘念谢驰
Owner SICHUAN UNIV
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