Hall current detection device

Abstract

The invention provides a Hall current detection device, comprising a current-carrying conductor, an insulated shell structure, a detection assembly and a connecting shell, wherein the insulated shell structure is directly or indirectly fixedly connected with the current-carrying conductor; the detection assembly is used for detecting current flowing through the current-carrying conductor, and comprises a Hall element close to the current-carrying conductor, a circuit board electrically connected with the Hall element and an output lead electrically connected with the circuit board; and the connecting shell is an insulated shell, fixedly connected with the Hall element, and detachably fixedly mounted with the insulated shell structure. The technical problem to be solved by the invention is to overcome the defects that the Hall current detection device in the prior art, which needs to be disassembled and assembled in a power-off manner, lowers the production efficiency, affects the production and has low safety, thus providing a Hall current detection device which is disassembled and assembled with power, does not lower the production efficiency, does not affect the production and has high safety.

Description

technical field [0001] The invention relates to the technical field of electrician detection, in particular to a Hall current detection device. Background technique [0002] In the technical field of electrical testing, a current transformer with an iron core is usually used to detect the current passing through a current-carrying conductor. The traditional current transformer mainly includes three parts: iron core, primary winding and secondary winding. The basic working principle of the current transformer is to convert the large current on the secondary side into a small current on the primary side according to the principle of electromagnetic induction and then measure it. . However, the above-mentioned method of using a current transformer with an iron core to detect the current passing through the current-carrying conductor has the following problems: when the current passing through the conductor is large, the magnetic flux generated in the iron core will show nonlin...

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Problems solved by technology

However, the above-mentioned method of using a current transformer with an iron core to detect the current passing through the current-carrying conductor has the following problems: when the current passing through the conductor is large, the magnetic flux generated in the iron core will show nonlinearity, resulting in The change of the mutual inductance coefficient of the transformer reduces the detection accuracy; in addition, due to the limitation of the volume of the iron core itself and the frequency characteristics of the material, the current transformer with the iron core structure cannot detect DC current and higher frequency current, and the detection range is narrow

[0004] Although the Hall current detection device disclosed in the above-mentioned patent document can solve the problems existing in the way of detecting the current passing through the current-carrying conductor by using a current transformer with an iron core, the above-mentioned Hall current detection device uses screws to directly connect the housing. Installed on the current-carrying conductor, in this way, when the Hall current detection device needs to be disassembled and installed, in order to prevent electric shock, it is necessary to stop the work of the equipment connected to the current-carrying conductor, and the current-carrying conductor needs to be in a power-off state, so that all The above shell is disassembled from the current-carrying conductor, and disassembly after power failure will bring a lot of inconvenience. For example, if it is to monitor the current on the production line, when it is necessary to disassemble and install the Hall current detection device, the entire production line will stop working , which greatly reduces production efficiency, affects production, and causes greater losses to the factory; and if the current-carrying conductor is not powered on during the disassembly process, there will be a danger of electric shock, causing harm to the human body, and the safety is poor

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