An electric energy meter immunity test device

Abstract

The invention discloses an electric energy meter immunity test device, which comprises a support seat, a tail seat and a back plate, the back plate is fixed on the support seat, the tail stock is fixed on the back plate, and the back plate is provided with current connection terminals, pulse Terminals and voltage terminals; current terminals, pulse terminals and voltage terminals are electrically connected to the electric energy meter testing equipment respectively, and there are terminals on the tailstock, including one or more positive terminals, negative terminals and voltage terminals , the positive terminal and the negative terminal are connected in series, the positive terminal at the first end is connected to the positive terminal of the current, the negative terminal at the end is connected to the negative terminal of the current; the voltage terminals are connected in parallel, the voltage line L terminal is connected to the first The positive terminal of the terminal is electrically connected, and the voltage terminal is respectively electrically connected with the N terminal of the voltage neutral line. The invention makes the connection between the devices faster in the high-frequency electromagnetic field immunity test, and minimizes the length of the connection line to reduce the 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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