Method and device capable of replacing electric energy meter without power failure

Abstract

The invention relates to a method capable of replacing an electric energy meter without power failure. The electric energy meter comprises a live-line terminal group and a null-line terminal group, wherein the live-line terminal group comprises a live-line incoming line terminal and a live-line outgoing line terminal, the live-line incoming line terminal and the live-line outgoing line terminal respectively and electrically communicate with a live-line incoming line and a live-line outgoing line, the null-line terminal group comprises a first null-line terminal and a second null-line terminal,and the first null-line terminal and the second null-line terminal respectively and electrically communicate with a null-line incoming line and a null-line outgoing line. The method capable of replacing the electric energy meter without power failure comprises the steps of reversely connecting a first diode and a second diode between the live-line incoming line and the live-line outgoing line ofthe live-line terminal group, wherein starting voltages of the first diode and the second diode both are larger than voltage drop between the live-line incoming line terminal and the live-line outgoing line terminal; and connecting the null-line incoming line and the null-line outgoing line by a wire. The invention also provides a device capable of replacing the electric energy meter without powerfailure. By the method, the electric energy meter can be replaced without power failure, and the method is low in implementation cost and is easy to implement.

Description

technical field [0001] The invention relates to the maintenance technology of electric energy meters. Background technique [0002] Residential energy meters generally use single-phase primary-side electric energy meters. The electrical wiring principles of existing common single-phase primary-side electric energy meters are as follows: figure 1 and figure 2 shown. [0003] figure 1 The shown single-phase primary-side watt-hour meter includes a processing circuit 1, a live wire terminal group and a neutral wire terminal group. The live wire terminal group is composed of a live wire incoming terminal 21 and a live wire outgoing terminal 22, the live wire incoming terminal 21 and the live wire outgoing terminal 22 are respectively connected to the processing circuit 1, and the live wire incoming terminal 21 and the live wire outgoing terminal 22 are respectively connected to the external The live wire incoming wire 31 and the live wire outgoing wire 32 are electrically co...

AI Technical Summary

Problems solved by technology

[0006] During the process of power supply service for residential users, the power supply company needs to replace the electric energy meter of the user from time to time. During the replacement process, it needs to cut off the power for a short time for the user who replaces the electric energy meter. The power outage will bring inconvenience to the work and life of the user. , Sudden power failure may even cause losses to users, for example, a sudden power failure of the computer will cause the loss of currently unsaved data

For this reason, there are also some individuals and units that have designed a device that realizes the continuous power replacement of the electric energy meter, but this type of device is not only complicated in structure and high in manufacturing cost, but also requires professional operators to carry out construction operations strictly according to the work flow, so it is relatively difficult difficult to promote

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