Electric leakage circuit design of multifunctional intelligent protector

Abstract

The invention discloses an electric leakage circuit design of a multifunctional intelligent protector. The electric leakage circuit design comprises the design of a circuit breaker electric leakage and tripping control circuit, the design of an electric leakage signal input loop and the design of an electric leakage self-checking circuit, and the design of the circuit breaker electric leakage andtripping control circuit comprises an electric leakage signal detection and control signal circuit and an electric leakage tripper circuit. The electric leakage circuit design has the following beneficial effects: two sets of independent electric leakage detection and electric leakage protection functions are realized; pure hardware circuit protection is selected for a high-sensitivity protectionscene, the influence of a CPU of a single-chip microcomputer is avoided, timeliness and reliability are ensured, and the channel output can be shielded through the single-chip microcomputer; in addition, the single-chip microcomputer can monitor a real-time electric leakage value, can flexibly configure electric leakage protection current, protection response time and other protection logics according to different application configuration options, and can ensure that a product can perform protection opening more reliably under the condition that an electric leakage fault occurs through tripping of the tripper and detection control opening.

Description

technical field [0001] The invention relates to the field of intelligent protector circuits, in particular to a leakage circuit design of a multifunctional intelligent protector. Background technique [0002] With the continuous development of science and technology, the advent of the fourth industrial revolution led by information technology has introduced the concept of "smart" into the topic of power safety, and the safe use of electricity has gradually moved from the initial passive protection to the active one. Protection, in today's "smart city" construction boom, "smart electricity use" has also become a new trend in the future of electricity safety. [0003] Smart circuit breaker is a highly integrated Internet of Things that integrates real-time online monitoring of power parameters, online real-time detection of equipment temperature, various power fault protection, power metering, remote control opening and closing, and wireless network communication functions. I...

AI Technical Summary

Problems solved by technology

However, in this case, when the power is reset, electric shock accidents may occur due to re-powering

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