Totally-enclosed anti-interference metering box

Abstract

The invention relates to a totally-enclosed anti-interference metering box, comprising a casing and a case door hinged to the casing and capable of being closed and locked, wherein the support in the casing is fixedly provided with an electric energy meter. The totally-enclosed anti-interference metering box is characterized in that the distance between the electric energy meter and each casing wall(including an upper casing wall, a lower casing wall, a left casing wall, a right casing wall, and a front casing wall) is no less than 20 cm; metering box is also provided with a shielding screen and a sealing joint strip; the shielding screen covers the external surface of the electric energy meter and is fixed to the support; the sealing joint strip is fixed to the front end of the casing, and realizes sealing between the casing door and the casing after the casing door is closed. The totally-enclosed anti-interference metering box has a scientific and reasonable design, can resist strong magnetic interference, and avoid electric larceny, and has higher creativity.

Description

Technical field [0001] The invention belongs to the field of electric power, and relates to a metering box, particularly a fully enclosed anti-interference metering box. Background technique [0002] Electricity is an indispensable energy source for industrial and agricultural production and people's daily life. In order to accurately measure electric energy, the power supply department installs electric energy meters on the lines of electricity users in order to charge reasonably. However, a very small number of criminals, driven by their interests, often manipulate the electric energy meter, so that the electric energy meter does not rotate or rotates slowly to achieve the purpose of stealing electric energy. [0003] In order to reduce the loss of national property and prevent the theft of electricity, the power supply department adopts the method of placing the electric energy meter in the anti-theft meter box so that criminals cannot access the electric energy meter, but this ...

AI Technical Summary

Problems solved by technology

[0003] In order to reduce the loss of national property and prevent the occurrence of electricity theft, the power supply department adopts the method of placing the electric energy meter in the anti-theft electric meter box, so that criminals cannot touch the electric energy meter, but this anti-theft method can only prevent electricity theft The purpose of stealing electricity on the line of the electric energy meter, but it cannot prevent the electricity thief from using other means to steal electricity

For example, the existing electric energy meters are all inductive and electronic, and their drive counting, current sampling, and braking damping are all inseparable from electromagnetic components. interference, it will cause the energy meter to count slowly or not measure

For example, when a magnet with a strong magnetic field is placed near the rotating aluminum plate of the induction meter, the electric energy meter will rotate slowly or stop; The function of the electric energy meter cannot be counted step by step, causing the electric energy meter to fail to measure; when the magnet is placed near the current sampling device (CT) of the multi-function electronic meter, the iron core of the current sampling device will be highly saturated due to the strong magnetic field and cannot The sensor samples the alternating signal, which causes the energy meter to count slowly or cannot really achieve the anti-theft function

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