Immunity testing device for electric energy meters

Abstract

The invention discloses an immunity testing device for electric energy meters. The device comprises a bracket seat, tailstocks and a back plate, wherein the back plate is fixedly arranged on the bracket seat; the tailstocks are fixedly arranged on the back plate; current connection terminals, pulse terminals and voltage connection terminals are arranged on the back plate, and are electrically connected with electric energy meter detection equipment respectively; wiring terminals are arranged on each tailstock, and comprise one or more than one positive wiring terminal, a negative wiring terminal and a voltage wiring terminal; the positive and negative wiring terminals are connected in series; the front positive wiring terminal is connected with a positive current connection terminal, and the tail negative wiring terminal is connected with a negative current connection terminal; the voltage wiring terminals are connected in parallel; a voltage live wire L connection terminal is electrically connected with the front positive wiring terminal, and the voltage wiring terminals are electrically connected with a voltage null line N connection terminal respectively. According to the device, equipment can be more rapidly connected during high-frequency electromagnetic field immunity testing, and the lengths of connecting wires are maximally reduced to reduce high-frequency interference.

Description

technical field [0001] The invention relates to a testing device for an electric energy meter, in particular to an anti-disturbance testing device for an electric energy meter. Background technique [0002] In order to ensure the anti-static discharge interference ability of electrical and electronic products when they are subjected to high-frequency electromagnetic interference, electrical and electronic products must undergo high-frequency electromagnetic field immunity testing. The currently known high-frequency electromagnetic field immunity testing equipment for electric energy meters is It is composed of electric energy meter inspection device, signal generator, power amplifier and antenna. The test process must be carried out in an anechoic chamber. The signal generator generates the frequency signal required by the standard of 80MHz to 2000MHz for the test. After the power is amplified by the power amplifier, the uniformity test site required by the test standard is ...

AI Technical Summary

Problems solved by technology

During the test process, according to the standard, the length of the cable that the tested product needs to be exposed to the electromagnetic field is 1M. During the test, the length of the equipment cable is too long and the equipment connection line is complicated, which makes it difficult to distinguish the line condition, which affects the quality of the line. Fast and accurate connection, and if the connection line is too long, it will be affected by high-frequency interference and the test results will be affected. Furthermore, due to the high cost of the darkroom for high-frequency electromagnetic anti-interference testing, the test equipment is expensive, so the test cost is high, so the equipment connection line is complicated Not only increases unnecessary testing time, but also costs more testing fees

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