Today, I will introduce a national invention authorized patent-a multi-rate electric energy meter. The patent was applied for by Ningbo Weisi Electric Technology Co., Ltd., and the authorization was announced on November 24, 2017. The utility model relates to an electric energy meter, in particular to an electronic electric energy meter. The electric energy meter is the most common meter for measuring electricity consumption. The current electric energy meter is mainly electronic, and the electronic energy meter measures accurately. During peak electricity usage, many places use time-sharing calculations. Generally, time-sharing runs from 8 a.m. to 10 p.m., and from 10 p.m. to 8 a.m. the next day. Different time periods have different formulas for calculating electricity rates. This requires a multi-rate meter. The electricity bills for industrial electricity and commercial electricity are different, and the voltages are also different. Generally, different meters are required for measurement. Nowadays, electricity consumption in cities is basically transmitted remotely, and payment is made for a certain period of time. However, it is often inconvenient for users to directly see the electricity consumption and electricity bills. For users, they cannot grasp their electricity consumption status in real time. The technical problem solved by the utility model is to provide a multi-rate electric energy meter, which solves the defects that the electric energy meter in the prior art is not universal in industry and commerce and the user is inconvenient to read data. The invention includes a multi-rate electric energy meter, including a casing and an electronic electric energy meter; the electronic electric energy meter is arranged inside the casing, and the electronic electric energy meter includes a central processing unit, a power supply module, and an electric energy measurement processing unit The electric energy measurement processing unit includes a voltage sampling module and a current sampling module, and the central processing unit is connected to an input unit, an RS485 circuit, a pulse output circuit, a memory, an LCD display circuit, and a voice output unit; the power supply module is electric energy The metering processing unit and the central processing unit supply power. The LCD display circuit includes a display screen, and the surface of the display screen is exposed outside the housing. The surface of the casing is provided with a mode switch, the upper part of the mode switch is set to the commercial power mode, and the lower part is set to the industrial power mode. The surface of the shell is provided with a keyboard and an indicator light. The multi-rate electric energy meter of the utility model is equipped with a mode changeover switch, which is a commercial power mode and an industrial power mode. Each mode corresponds to a different electricity bill calculation formula, and can be applied to two different occasions. The scope of application Wider. The multi-rate electric energy meter of the utility model has the function of reading the electricity bill, and the user can grasp the electricity consumption and the cost of the electricity in time, and adjust the electricity consumption for production and life. Stainless Steel Soft Belt,Sheet Plate Strips Band Belt,Stainless Steel Sheet Joining Strip,Adhesive Stainless Steel Strips ShenZhen Haofa Metal Precision Parts Technology Co., Ltd. , http://www.haofametals.com![[New patent introduction] A multi-rate electric energy meter](http://i.bosscdn.com/blog/o4/YB/AF/tw2JmAUOR2AADBfs86kx8877.png)