CN2103819U

CN2103819U - Tester for single-phase three-hole socket

Info

Publication number: CN2103819U
Application number: CN 91215955
Authority: CN
Inventors: 王常余
Original assignee: JINSHAN INDUSTRIAL EQUIPMENT INSTALLATION INTEGRATED CORP SHANGHAI
Current assignee: JINSHAN INDUSTRIAL EQUIPMENT INSTALLATION INTEGRATED CORP SHANGHAI
Priority date: 1991-09-28
Filing date: 1991-09-28
Publication date: 1992-05-06

Abstract

The utility model provides a tester for single-phase three-hole socket, used for detecting the wiring of the single-phase socket. Three roots of wiring terminals, three diodes, and a switch are installed on a shell body. Three resistors are installed in the shell body and circuits are connected into a triangular circuit. When the tester for single-phase socket is used, three roots of wiring terminals are connected with three wires of the measured socket. Meanwhile, two sets of direct current power supplies connected in series are used; the negative electrode of the direct current power supplies is connected with a ground wire of a distributing box; the center contact point of the direct current power supplies is connected with a zero line of the distributing box; the positive electrode of the direct current power supplies is connected with a phase wire of the distributing box. Thereby, whether the wiring of the socket is right or not can be detected before the distributing box is not connected with an alternating current power supply of high pressure, and can be intuitionally displayed on the tester. The utility model is suitable for detecting the wiring of the sockets in various electric installation projects.

Description

Tester for single-phase three-hole socket

The utility model relates to a kind of single-phase socket detector that is used to detect single-phase three socket phase lines, zero line and ground wires.

In electrical installation project, need to check whether phase line, zero line and the ground wire of mounted socket be correct with being connected of panel box.Nineteen ninety, Singapore's English Dicon A/S used the single-phase socket detector of a kind of Britain product in the construction of bright and beautiful deep blue Wen Huada wineshop, connected three neon tubes and four resistance in its circuit.When this detector uses, after needing in panel box, to connect 220 volts of AC power, charged socket is checked to have danger.When this detector uses, show not intuitively, need table look-up and to judge the circuit of wrong.

The purpose of this utility model is to provide a kind of panel box that need not to connect that AC power just can detect, the single-phase socket detector of intuitive display.

For achieving the above object, the utility model adopts following technical proposals: this single-phase socket detector includes housing, three binding posts, be installed in three light emitting diodes on the housing and be installed in three resistance in the housing.Be characterized in: a serial connection light emitting diode and resistance between per two binding posts, linkage triangle shape circuit, the resistance value of three resistance is not exclusively equal, has in the tandem link of a light emitting diode and resistance to be connected in series a switch.Three binding posts with this detector during use are connected with the three-way of tested socket.Connect panel box interior phase line, zero line and ground wire respectively with three contacts behind two groups of direct supply polyphones simultaneously.Like this, constitute different current potentials between three-way, the current potential that two interpolars of three light emitting diodes are had nothing in common with each other makes shinny that three light emitting diodes have, and what have is not shinny, thereby can judge the three-way whether wrong of socket.

This detector can be designed to: give different sign L, N, E respectively in that three binding posts that connect phase line, zero line and ground wire are other, and the switch of on the circuit between earth terminal E and the zero line post head N, connecting, this switch can be usually to drive switch; Resistance value between earth terminal E and the zero line post head N on the circuit is twice than above-mentioned resistance value with the resistance value on the circuit between zero line post head N and the phase line binding post L, is 2R.During use, two groups of direct supply serial connection ground wires that potential is identical, anodal connection phase line, and intermediate contact connects zero line.After pressing the direct supply serial connection, its three contact is connected with the three-way of panel box: negative pole is connected ground wire, anodal connection phase line, and intermediate contact connects zero line.After pressing normal open switch, three light emitting diodes are bright entirely, and the wiring of expression socket is correct; A light emitting diode does not work, and two wiring that expression connects this light emitting diode connect instead; A light emitting diode does not work, and represents the conductor cord disconnection between these two light emitting diodes; Three light emitting diodes all do not work, and expression phase line and ground wire connect instead, and situation is serious.

The utility model has conspicuous advantage compared with prior art: when the AC power of panel box access failure high pressure, but just whether the wiring of test socket is correct, thereby compares safety; This detector intuitive display need not to table look-up and can judge whether the socket wiring is correct, and whether zero, ground wire connects instead, is convenient to correct.

The drawing of accompanying drawing is described as follows:

Fig. 1 is the front elevation of an embodiment of the utility model.

Fig. 2 is the right view of Fig. 1.

Fig. 3 is an A-A place cut-open view among Fig. 2.

Fig. 4 is a circuit diagram of the present utility model.

Fig. 5 is the circuit diagram of the single-phase socket detector of Britain's product.

Label representative in the accompanying drawing: 1-housing, 2-switch TA, 3-light emitting diode D ₁, D ₂, D ₃, 4-binding post L, N, E, 5-resistance R.

A most preferred embodiment scheme of the present utility model is: referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, three binding posts 4, three light emitting diodes 3 and normal open switch 2 are installed on the housing 1 of this detector, three resistance 5 are installed in the housing 1.Circuit is connected into delta circuit: series resistor R, normal open switch TA and diode D between ground wire E and the zero line N ₁, series resistor R and diode D between zero line N and the phase line L ₂, series resistor 2R and diode D between ground wire E and the phase line L ₃, resistance R is 200-1000 Europe, three light emitting diode D ₁, D ₂And D ₃Electric current be the 5-10 milliampere.During use, the potential of two groups of direct supplys is equal, i.e. V ₁=V ₂=1.5-6 volt.After two groups of direct supply serial connections, negative pole end connects the ground wire E ' of panel box, and middle contact connects the zero line N ' of panel box, and positive limit connects the phase line L ' of panel box.

The utility model is applicable to the wiring of checking single-phase socket in the various electrical installation projects.

Claims

1, a kind of single-phase socket detector that is used to detect single-phase three socket phase lines, zero line and ground wire wiring, comprise housing 1, three binding posts 4, will be contained in three light emitting diodes 3 on the housing 1 and be installed in three resistance 5 in the housing 1, it is characterized in that a light emitting diode 3 of serial connection and a resistance 5 between per two binding posts, be connected into delta circuit, the resistance value of three resistance 5 is not exclusively equal, has in the tandem link of a light emitting diode 3 and resistance 5 to be connected in series a switch 2.

2, single-phase socket detector according to claim 1 is characterized in that connecting that three binding posts 4 of phase line, zero line and ground wire are other gives different sign L, N, E respectively, is being connected in series switch 2 on the circuit between earth terminal E and zero line post head N; Resistance value between earth terminal E and the zero line post head N on the circuit equates to be R with the resistance value on the circuit between zero line post head N and the phase line binding post L, and the resistance value on the circuit is twice than above-mentioned resistance value and is 2R between earth terminal E and the phase line binding post L.

3, single-phase socket detector according to claim 1 is characterized in that switch 2 is normal open switch.

4, single-phase socket detector according to claim 2, the electric current that it is characterized in that three light emitting diodes 3 is the 5-10 milliampere, resistance R is 200-1000 Europe.