Integrated intelligent electricity meter with earth leakage protection function

A smart meter and leakage protection technology, which is applied to emergency protection circuit devices, automatic disconnection emergency protection devices, electrical components, etc., can solve the problems of personal and electrical safety hazards, box installation space limitations, and high cost of auxiliary equipment. Achieve the effect of realizing remote control, realizing unification, and improving the level of power consumption management
CN105866485AInactive Publication Date: 2016-08-17浙江豪顿电气有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
浙江豪顿电气有限公司
Publication Date
2016-08-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

An integrated smart meter with leakage protection function. It consists of three parts: casing, machinery and circuit. The casing is composed of a base (1) and an upper cover (2). The mechanical part is mostly installed in the base. There are LCD screens, Buttons and indicator lights, the circuit includes a power circuit (16), a main control chip circuit (19), a communication and control circuit (17), a metering circuit (15) and a sampling circuit (18); the single-phase AC 220V input in the power circuit passes through Step down the voltage of the transformer, then rectify it into DC, and output 5V through the voltage regulator block to provide stable 5V power supply and 12V power supply for the main control chip circuit, communication and control circuit, metering circuit and sampling circuit; the AC in the power circuit The 12V output terminal is connected to the optocoupler output terminal of the sampling circuit. This meter can perform automatic load control and leakage protection for power users, saving time, labor, safety and efficiency.
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Description

technical field

[0001] The invention relates to an integrated intelligent electric meter with leakage protection function used in a low-voltage power distribution and metering box. Background technique

[0002] The watt-hour meters used in low-voltage power distribution cabinets and metering boxes can only measure the actual output power usage, so as to complete the task of charging electricity usage. Once this kind of watt-hour meter cannot cut off the user's electricity in time when the user owes the fee, it can only be used Manual on-site switching can control the continued arrears of electricity, which has caused some problems such as untimely charging and arrears of electricity. In the event of overload, short circuit and other faults, the power supply circuit cannot be cut off in time, and accidents such as personal electric shock and electrical fire cannot be avoided. It can be seen that ordinary electric meters need to be used in conjunction with other line protecti...

Claims

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