General high-voltage potential indicator

Abstract

The invention discloses a general high-voltage potential indicator, which comprises a rectification circuit, an indicator light, an indicator light power supply circuit, an indicator light driving control circuit, a switching circuit and a shunt circuit, wherein the input end of the rectification circuit is connected to an alternating current network; the output end of the rectification circuit is connected to the input end of the indicator light power supply circuit and the input end of the indicator light driving control circuit; one path of the output end of the indicator light power supply circuit is connected to the input end of the indicator light driving control circuit successively by the switching circuit and the shunt circuit; the other path of the output end of the indicator light power supply circuit is also connected to the input end of the indicator light; and the output end of the indicator light driving control circuit is connected to the input end of the indicator light. According to the general high-voltage potential indicator disclosed by the invention, the realization principle of the internal circuit of the general high-voltage potential indicator is changed, and a dial switch is added to achieve the general function of one machine with multiple purposes, i.e. the same general high-voltage potential indicator product can realize total-range voltage detection by arranging a plurality of dial switches, and the voltage detection of the similar product in the prior art is basically covered.

Description

technical field [0001] The invention relates to a charging indicator device, in particular to the electrical principle and structure of a universal high-voltage charging indicator. Background technique [0002] In the high-voltage transmission system, the voltage of the secondary transmission system is tens to hundreds of kilovolts, which is still in the high-voltage range. However, in order to maintain the secondary transmission system, it is often necessary to monitor the operating status of the grid. Therefore, there is a need for a device that can be used in various high-voltage electrical equipment such as ring network cabinets, high-voltage switch cabinets, and cable branch boxes in the power system. The equipment is damaged by high voltage insulation, and the high voltage is directly introduced into the front operation panel of the equipment, which may cause electric shock to the electric maintenance personnel. The country mandates that high-voltage electrical equip...

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Problems solved by technology

[0008] Therefore, in view of the above-mentioned problems, the present invention proposes a kind of general-purpose high-voltage charged indicator, by changing the realization principle of its internal circuit, adding a dial switch, reaching the multi-purpose general function of one machine; reducing the existing threshold voltage 90V to Below the safe voltage, there is no need to add a safety protection module, and at the same time solve the problem of difficult wiring; choose other components to replace the gas discharge tube, thereby improving the stability of the product; to solve the shortcomings of the existing technology

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