Universal safety electric socket

Abstract

The invention discloses a universal safety electric socket which is connected with an AC electric wire of a U, V, W, N and PE three-phase five-wire system. The universal safety electric socket comprises an AC contactor KT, a short circuit/ overvoltage/ undervoltage/ overcurrent protecting QF, an electricity leakage detecting control circuit CT and a socket unit ET. The socket has the protection function for short circuit, overload, unvervoltage, overcurrent and electricity leakage. The whole circuit is high in capacity of being cut off in danger; the arc spark in electric contact is small; the sense of scare and fear of students at the beginning of electrifying can be removed, and the safety and protection in experiment and practices can be greatly improved; a fuse is not connected, thus the trouble of replacing the fused core or fused wire after abnormal accident of the common protection is avoided, the resource can be saved, and the protection can be safely and reliably performed; an interface of the socket unit ET under safe electrifying is of a three-phase four-hole type or a single-phase three-hole type; the single-phase three-hole or three-phase four-hole can be applied to a power board by adapting, and the protection effect is the same; therefore, the connection scope of the experimental socket board can be conveniently expanded.

Description

technical field [0001] The invention relates to a socket, in particular to a safe electric socket with protection function. Background technique [0002] In vocational education and various electromechanical majors, students and teachers have to do a lot of electromechanical training and experiment courses every year, and the circuits made in each experiment are different, especially for beginner electrical engineering students who have to complete AC220V / AC380V experiments Works, the first time the power is turned on, there are often accidents such as internal short-circuits in the experimental circuit, fires, and burnout of electronic control facilities. The reason is that beginners have limited knowledge and understanding of electrical circuits, errors or negligence in the layout and wiring of the circuit structure produced, there will be various unpredictable errors or wrong plug-ins, etc., resulting in the test product being tested. Accidents such as short circuit, ove...

AI Technical Summary

Problems solved by technology

This dangerous situation is not only in schools, but also in the electromechanical manufacturing of enterprise factories, there are oft

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