A new type of quick wiring combination smart meter

Abstract

The invention discloses a novel rapidly wired combined intelligent electric meter comprising an electric meter casing separated into an upper chamber and a lower chamber by an upper-lower separator plate. The lower chamber is separated into a front chamber and a mutual inductor chamber by a front-rear separator plate. A combined mutual inductor is inserted into the side of the mutual inductor chamber. A reading mechanism is disposed in the upper chamber. A combined switch and a relay are disposed in the front chamber. The wire inlet end of the combined switch is connected with a wire via a wiring device. The wire outlet end of combined switch is connected with the combined mutual inductor through an electric sleeve. The combined mutual inductor is connected with the relay through an electric sleeve. The relay is connected with a wire. A small current transformer is disposed in the combined mutual inductor. The wiring device comprises a wiring seat and a wiring sleeve. The current transformer in the rapidly wired combined intelligent electric meter can be repeatedly replaced and used. The rapidly wired combined intelligent electric meter can be rapidly replaced and repaired while an external power supply is not required to be turned off and is especially suitable for construction sites where electric meters are frequently replaced.

Description

technical field [0001] The invention relates to the technical field of intelligent electric meter design, in particular to a novel quick-wiring combined intelligent electric meter. Background technique [0002] An electric meter is an instrument used to measure electric energy and is widely used in the electric power industry. The smart meter has the following requirements for the magnetic interference of the external constant magnetic field on the sampling of the electromagnetic current transformer (CT): 300mT magnets interfere at the bottom of the meter, and the deviation of the meter's measurement accuracy (CT sampling accuracy) should be ≤ 2%. Existing smart meters such as figure 1 As shown, the external network wire passes through the current transformer 3 through the wire connector 4 and is connected to the relay 2 and is exported. Induction wire; when the current in the external network wire flows through the current transformer, the iron core magnetic induction lin...

AI Technical Summary

Problems solved by technology

[0003] The current transformer in the existing smart meter is exposed and fixed in the meter, which is very susceptible to interference from an external magnetic field, causing errors in current readings and reducing the accuracy of power readings

Since the current transformer needs to be fixed on the meter during installation, and its induction wire needs to be connected with the reading mechanism of the meter, the assembly process is complicated and the assembly speed is slow, which reduces the production efficiency

If the current transformer is damaged, it is difficult to repair the meter, and the user can only replace a new meter, which leads to a waste of resources. When the user needs to repair or replace the meter, he must first turn off the power supply of the external network, and then Use a screwdriver to loosen the screws in the wire connectors, and then pull out the wires into the meter to realize the replacement and maintenance of the electric energy meter. This operation is complicated and slow, and turning off the power supply of the external network will affect the daily life of the surrounding residents. Electricity, misoperation may easily lead to electric shock accidents

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