Indicator for preventing mistakenly entering charged chamber

A charged interval and indicator technology, which is applied in the direction of instruments, measuring electrical variables, measuring current/voltage, etc., can solve the problems of poor reliability, high dependence on the sensitivity of sensing elements, complex structure, etc., to achieve convenient operation, simple and practical structure Effect

Active Publication Date: 2009-12-02
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It belongs to an electronic charging interval display device, which is highly dependent on the sensitivity of the sensing element, and has the problems of complex structure and poor reliability.

Method used

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  • Indicator for preventing mistakenly entering charged chamber

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Embodiment Construction

[0012] figure 1 shows that the present invention includes busbar 1, capacitance C to ground 0 , in the ground loop of bus 1 and the ground capacitance C 0 Connected in series with a voltage divider capacitor C used to separate the voltage of 10-20 volts 1 , and the capacitance C 1 It is connected in parallel with the light-emitting element 2 for charging gap indication. There is another ground capacitor C in the sea connection of the ground loop of bus 1 2 , and the voltage dividing capacitor C 1 In series with two capacitors to ground C 0 and C 2 middle. The light-emitting element 2 is an electroluminescent element, specifically a light-emitting diode or a neon tube.

[0013] The basic principle of this device is: use the capacitance of the busbar (or line) to the ground, connect a capacitor in series in the circuit, divide the voltage of more than ten volts at both ends of the capacitor, and add the voltage to the two stages of the electroluminescent element. When t...

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Abstract

The invention discloses an indicator for preventing mistakenly entering a charged chamber, which comprises a bus and a ground capacitor C0; in a ground circuit of the bus, the ground capacitor C0 is connected in serial with a voltage-dividing capacitor C1 used for dividing out 10-20V voltage; and the capacitor C1 is connected in parallel with a luminous element used for indicating a charged clearance. The indicator has the characteristics of simple and practical structure, striking indication and high reliability.

Description

technical field [0001] The invention relates to a charged display security device, in particular to an indicator for warning the high-voltage charged interval by means of light. Background technique [0002] In the process of overhauling high-voltage electrical equipment in the power system, there are two major elements of operational safety, one is to prevent electrical misoperation (the most widely used is the high-voltage live display locking device, such as Chinese patent document ZL200720059574.1, the main function of this traditional method It is to prevent electrical misoperation, but it cannot effectively prevent the maintenance personnel from entering the electrified interval by mistake); the second is to prevent the electrified interval from entering by mistake. .5), it is to install a transmission rod type mechanical mechanism on the front and rear doors of the high-voltage switch cabinet to realize that only when there is no electricity in the high-voltage switch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/155
Inventor 胡灿刘平
Owner STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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