Anti-interference electromagnetic-current-transformer-contained intelligent electric meter with characteristic of rapid mounting and dismounting
A current transformer and smart meter technology, applied in the field of electric meters, can solve the problems of reduced production efficiency, slow assembly speed, resource waste, etc., and achieve the effects of improving installation and maintenance speed, ensuring reading accuracy, and reducing resource waste
Active Publication Date: 2016-03-16
HUAIHUA JIANNAN MACHINERY FACTORY CO LTD
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Problems solved by technology
The current transformer in the existing smart meter is exposed and fixed in the meter, which is very susceptible to interference from an external magnetic field, causing errors in current readings and reducing the accuracy of power readings
Since the current transformer needs to be fixed on the meter during installation, and its induction wire needs to be connected with the reading mechanism of the meter, the assembly process is complicated and the assembly speed is slow, which reduces the production efficiency
If the current transformer is damaged, it is difficult to repair the meter, and the user can only replace a new meter, which leads to a waste of resources
Method used
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[0036] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present invention. .
[0037] like Figure 1-7 As shown, the specific structure of the present invention is: a smart meter with an anti-interference electromagnetic current transformer that can be quickly assembled and disassembled. It includes a housing 1 and a waterproof cover 2 arranged outside it. 7 is divided into an upper cavity and a lower cavity, and the lower cavity is divided into a front cavity and a current transformer cavity 14 by front and rear partitions 25; the side of the current transformer cavity 14 is provided with a plug-in port 3; the upper cavity is provided with A reading mechanism 8; a wiring switch...
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Abstract
The invention discloses an anti-interference electromagnetic-current-transformer-contained intelligent electric meter with the characteristic of rapid mounting and dismounting. A current transformer cavity is arranged inside a meter housing; and a plugging port is formed in the side of the current transformer cavity. An integrated current transformer is arranged in the current transformer cavity; leading-out terminals of wiring switches are connected with a conductor wire arranged inside the integrated current transformer and the other end of the conductor wire is connected with a relay. The integrated current transformer includes a heat-radiating shielding box; current transformer units are arranged in the heat-radiating shielding box uniformly; two wiring terminals of the current transformer units are connected fine elastic contacts connected with a reading mechanism; coarse elastic contacts are arranged at the two ends of the conductor wire; the fine elastic contacts and the coarse elastic contacts are arranged on the bottom surface of the heat-radiating shielding box uniformly; and sliding sides arranged at the two sides of the heat-radiating shielding box. With the electric meter, the interference on the electric meter reading number by an external magnetic field can be effectively prevented; the assembling speed and maintenance speed of the electric meter can be substantially improved; and the current transformer in the electric meter can be replaced and used repeatedly, so that the service life of the electric meter is prolonged.
Description
technical field [0001] The invention belongs to the technical field of electric meters, in particular to a smart electric meter with an electromagnetic current transformer capable of quick assembly and disassembly and anti-interference. Background technique [0002] An electric meter is an instrument used to measure electric energy and is widely used in the electric power industry. The smart meter has the following requirements for the magnetic interference of the external constant magnetic field on the sampling of the electromagnetic current transformer (CT): 300mT magnets interfere at the bottom of the meter, and the deviation of the meter's measurement accuracy (CT sampling accuracy) should be ≤ 2%. Existing smart meters such as figure 1 As shown, the structure of this smart meter is that the external network wire passes through the current transformer 32 through the wire connector 31 and is connected to the original relay 33 and is derived, and the induction wire of the...
Claims
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Inventor 杨辉军董名球易思杏
Owner HUAIHUA JIANNAN MACHINERY FACTORY CO LTD