Connection structure for shunt sheet and wiring terminal on intelligent electric meter, and method for detecting connection state

Abstract

The invention relates to a connection structure for a shunt sheet and a wiring terminal on an intelligent electric meter, and a method for detecting a connection state. The method comprises the steps: enabling a connecting terminal of a shunt sheet of a relay to be machined into a terminal with a rack structure, wherein a wiring terminal connected with the connecting terminal is provided with a terminal with a rack structure; enabling two terminals with rack structures to be connected in an engaged manner, wherein the engagement joint is clamped by a clamp and the clamp is provided with a wiring end connected with a detection line; detecting a voltage V through the detection line, carrying out judgment, and obtaining the connection state of a product. The structures in engaged connection is reliable in connection and is large in contact area. Moreover, there is no need of punching, the shape of a conductor is not changed, the resistance of a contact part cannot be increased because of product, and the heating also cannot be caused. An elastic steel card is made of elastic materials, and cannot be loosened because of bumping and shock. The above method enables an electric meter, which may heat, to be directly screened out in a production process during meter calibration, thereby guaranteeing the stability of the quality of the product.

Description

technical field [0001] The invention relates to the field of smart electric meters, in particular to the improvement of the appearance of the shunt plate of the electric meter, the improvement of the installation process and the improvement of the connection state detection method. Background technique [0002] At present, the connection between the shunt of the magnetic latching relay and the terminal used in the smart meter is to punch a screw hole with a diameter of 4-5mm in the shunt and the terminal, and then rely on the screw and the elastic metal gasket for physical connection. But as we all know, due to the existence of punching holes, the cross-sectional area of ​​the metal conductor decreases, the internal conductivity will inevitably decrease, and the resistance will increase; even if the screws and gaskets used for connection are also metal, due to the difference in metal materials, in addition The surface of the screw cannot be processed very smooth, so it is di...

AI Technical Summary

Problems solved by technology

[0005] 1. The relay shunt and the terminal of the watch case are usually produced by two manufacturers, which are almost irreconcilable for installation and debugging, and it is difficult to achieve no matter which party completes the welding

[0006] 2. If there is a problem with the welding, the shunt cannot be replaced

[0007] 3. Even if it is welding, due to the problems of flux and welding process, under the condition of long-term current heating, abnormal conditions will appear at the welding place, which is neither reversible nor can it be handled

Images