A kind of meter calibration method of meter electric energy meter

Abstract

The invention provides a method for calibrating a meter electric energy meter, which comprises the following steps: the first step is to install the electric energy meter of the meter; the second step is to obtain the photoelectric sampling accuracy of the meter calibration chip; the third step is to determine the gain of 1.0 Whether it is qualified, if it is not qualified, then enter the fourth step, if it is qualified, then enter the fifth step; the fourth step, the calibration chip finds out the abnormal voltage point x, abnormal current point y, and manually adjusts x and y; The fifth step is to judge whether the 0.5L angle difference is qualified. If it is not qualified, it will enter the sixth step. If it is qualified, it will enter the seventh step. ; The seventh step is to judge whether the small current bias is qualified, if it is not qualified, then enter the eighth step, if it is qualified, then enter the ninth step; the eighth step, the calibration chip finds out the abnormal bias point n, manually n debugging; the ninth step, the calibration is completed. The invention has fewer meter calibration steps, greatly reduces the difficulty of meter calibration and improves the meter calibration efficiency.

Description

technical field [0001] The invention relates to the technical field of calibration of electric energy meters, in particular to a method for calibration of electric energy meters of measuring devices. Background technique [0002] The existing measuring device electric energy meter is equipped with a metering chip and various electrical components. Due to its simple structure, when the meter is calibrated, each point can only be manually detected one by one. Such as figure 1 As shown, the existing meter calibration method of the meter electric energy meter is as follows: firstly, install the meter electric energy meter on the meter calibration platform, and start the meter calibration platform, and then check whether the 1.0 gain is qualified. Check whether the three voltage points 1, 2, and 3 are qualified one by one, and then check the 3 current points 1, 2, and 3 one by one; then check whether the 0.5L angle difference is If it is qualified, it is necessary to check the ...

AI Technical Summary

Problems solved by technology

The above meter calibration process needs to detect many points, the whole meter calibration method is complicated and the detection efficiency is low, so it is necessary to propose a simpler meter calibration method

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