A constant magnetic field verification device for an electric energy meter
A constant magnetic field and verification device technology, applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve the problems of inaccurate measurement of electric energy meters, low verification accuracy, and inflexible adjustment of external magnetic fields, so as to improve verification efficiency and automation high degree of effect
Active Publication Date: 2022-01-11
MEASUREMENT CENT OF GUANGDONG POWER GRID CO LTD
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[0002] The external constant magnetic field has a great influence on the measurement performance of the electric energy meter, mainly affecting the power supply module, current transformer, and sampling unit inside the electric energy meter, so that the electric energy meter cannot measure accurately, so the external constant magnetic field is performed on the electric energy meter before it is put into use. Impact testing is necessary
Existing test devices generally have the problems of inconvenient operation and low verification accuracy, which cannot meet the environmental requirements of relevant standards for the verification of electric energy meters. The test process is not automated so that it is impossible to avoid injury to the operator. The external magnetic field of the test is not flexible. adjust
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[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0037] see Figure 1 to Figure 9 , this embodiment provides a constant magnetic field verification device for electric energy meters, such as figure 1 and figure 2 As shown, the verification device casing 1 is a rectangular box with an opening on one side of the upper layer. The fixing frame inside the verification device is divided into upper, middle and lower layers, which are respectively upper layer 2, middle layer 3 and lower layer 4; The cylinder asse...
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The application relates to a constant magnetic field verification device for an electric energy meter, which belongs to the technical field of measurement equipment testing. Two sets of electric cylinder assemblies are arranged on the fixing frame of the verification device, which are vertically arranged on both sides of the electric energy meter placement seat. A movable magnetic steel assembly is arranged on the electric cylinder assembly to provide a magnetic field environment, and the electric driver drives the movement of the two electric cylinder assemblies to change the position of the magnetic steel assembly so as to change the magnetic field on the surface of the electric energy meter; through the present invention The implementation enables the magnetic field to be applied to all accessible surfaces of the electric energy meter when performing performance verification under a constant magnetic field to meet the verification magnetic field environment requirements of relevant standards; the verification device provided by the invention can automatically perform constant Magnetic field automatic verification, high degree of automation, greatly improving the verification efficiency.
Description
technical field [0001] The invention belongs to the technical field of measuring equipment testing, and in particular relates to a constant magnetic field verification device for an electric energy meter. Background technique [0002] The external constant magnetic field has a great influence on the measurement performance of the electric energy meter, mainly affecting the power supply module, current transformer, and sampling unit inside the electric energy meter, so that the electric energy meter cannot measure accurately, so the external constant magnetic field is performed on the electric energy meter before it is put into use. Impact testing is necessary. Existing test devices generally have the problems of inconvenient operation and low verification accuracy, which cannot meet the environmental requirements of relevant standards for the verification of electric energy meters. The test process is not automated so that it is impossible to avoid injury to the operator. Th...
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IPC IPC(8): G01R35/04
CPCG01R35/04
Inventor 路韬黄友朋党三磊张捷李倩
Owner MEASUREMENT CENT OF GUANGDONG POWER GRID CO LTD