Intelligent terminal modular digital integrated protector

Abstract

A modular and digital integrated protector for intelligent terminals, which not only has protection functions such as overload, short circuit, overvoltage, undervoltage, leakage, and automatic tracking of leakage, but also has adjustable leakage action value, adjustable overcurrent action value, three times Comprehensive functions such as automatic reclosing, as well as data display and transmission of single-phase current, voltage, leakage current, etc. Function. It is composed of a small modular plastic shell, main circuit and auxiliary power supply circuit, zero-sequence transformer, voltage sampling circuit, manganese-copper shunt sampling circuit, data comparison and parameter adjustment circuit, single-chip microcomputer (U3), LED display circuit, alarm circuit , remote control communication interface, and electric automatic reclosing circuit.

Description

1. Technical field [0001] The invention relates to a small terminal intelligent comprehensive protector in the field of low-voltage electrical appliances, in particular to a module that integrates the functions of a high breaking small circuit breaker, a small leakage circuit breaker, current, voltage and leakage data collection and processing, and automatic reclosing. Comprehensive intelligent terminal protector. 2. Background technology [0002] At present, the small leakage circuit breaker and the small automatic reclosing leakage protection switch used in the low-voltage electrical equipment field in the known field of low-voltage electrical appliances all have functions such as overload, short circuit, overvoltage, undervoltage, leakage protection and one-time automatic reclosing, but, These small terminal modular protective devices do not have intelligent functions such as adjustable leakage action value, adjustable over-current action value, current and voltage leakag...

AI Technical Summary

Problems solved by technology

[0002] At present, the small leakage circuit breaker and the small automatic reclosing leakage protection switch used in the low-voltage electrical equipment field in the known field of low-voltage electrical appliances all have functions such as overload, short circuit, overvoltage, undervoltage, leakage protection and one-time automatic reclosing, but, These small terminal modular protective devices do not have intelligent functions such as adjustable leakage action value, adjustable over-current action value, current and voltage leakage display, etc., nor do they have three times automatic reclosing and telemetry, remote communication, remote control, and remote adjustment. Intelligent and networked management functions of low-voltage power grid terminals

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