Ammeter used relay having electric leakage protection function

Abstract

A ammeter used relay having an electric leakage protection function comprises a shell and an electrical device, wherein the shell is divided into two parts of a top cover (8) and a base (25), a space between the top cover (8) and the base (25) is an installation chamber, a circuit board serving as an installation base plate (14) is arranged at the top of the chamber, indication lamps (15), buttons (16), a shift (17) and an ammeter interface contact element (13) are arranged on the installation base plate, installation holes for components such as the indication lamps are formed at corresponding positions of the top cover, incoming and outgoing posts (24), magnetic latching relays (22), current transformers (19), a zero sequence transformer (21) and the like are arranged in the base, and the electrical device comprises a power circuit (2), a master control chip circuit (5), a communication and control circuit (1), an indication lamp circuit (3) and a sampling circuit (4). The relay is arranged on a three-phase four-wire low-voltage circuit, automatic load control and electric leakage protection can be achieved for a power user, and automatic switch-on also can be remotely controlled. The relay has the advantages of small size, time saving, labor saving, safety and efficiency, and can be installed in a universal ammeter box.

Description

technical field [0001] The invention relates to an external electric meter special relay which cooperates with an intelligent electric meter to realize the functions of leakage protection, remote control closing and cost control. Background technique [0002] In recent years, with the rapid development of my country's national economy, a large number of small and medium-sized enterprises focusing on processing have emerged; with the continuous deepening of urban planning and construction, the development of real estate has made rapid progress, and large and small Various types of residential quarters; a good employment environment actively promotes the continuous improvement of residents' living standards. All of the above are inseparable from the environment of electricity consumption. Therefore, all walks of life have higher and higher requirements for the quality and quantity of power supply, and their dependence on power supply is getting stronger and stronger. At the sa...

AI Technical Summary

Problems solved by technology

After retrieval and market investigation, no data reports or real products have been found on the market for load control used in conjunction with smart meters, relays with leakage protection functions and remote control closing.

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