CN201540341U

CN201540341U - Electric circuit and leakage detector

Info

Publication number: CN201540341U
Application number: CN2009200742966U
Authority: CN
Inventors: 姚维华
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-21
Filing date: 2009-07-21
Publication date: 2010-08-04
Anticipated expiration: 2019-07-21

Abstract

The utility model belongs to a detector for detecting whether the installation of an electric circuit and a leakage protector of a building is correct; a panel of the front surface of the detector is provided with a light-emitting pipe, a test button (a microswitch) and a concealed buzzer; the back surface of the detector is provided with a plug rod extending out of a shell; and the plug rod can be connected with a user socket; and when in working, the detector can directly display the relation of line sequence, and after the test button (the microswitch) is pressed, the detector can detect whether the wire connection of the indoor leakage protector is correct.

Description

Electric wiring, leakage detector

Technical field

The utility model belongs to the architectural electricity line construction; after being particularly related to covil construction electric wiring work progress and completion; whether correct to " line preface " between phase line (L), zero line (N) and the ground protection line (E) of indoor consumer and indoor electric leakage equipment (being electric leakage protector) installation, the device that detects.

Background technology

Covil construction are electric at line construction with after installing, whether " line preface " for line layout adheres to specification, often feel simply helpless, or employing simple tools, as detecting with electroscope, but electroscope can only be judged " phase line " (being commonly called as live wire) under the indoor power supply situation, and still powerless for zero line and protective ground line; Indoor socket, generally provide power supply to household electrical appliance, as: household electrical appliance such as washing machine, refrigerator, for safe in utilization, the single-phase three-terminal polarized plus plug of more employing wherein indicates directly communicating with the electrical appliance shell of E symbol, thereby modern covil construction, also just adopt relative measures in design, increase the protective ground line, socket also adopts single-phase three-pole; As mentioned above; electroscope can only be judged " phase line "; and can't judge zero line and ground protection line; even use universal meter at the scene; also can only judge " phase line " in three pole sockets; concrete operations are with exchanging the 250V shelves; measure three utmost points of socket respectively; when having one extremely the voltage indication to be arranged respectively (being generally 220V) with other the two poles of the earth; then can judge this very " phase line "; but the two poles of the earth in addition, how to distinguish who be zero line (N) who be protective ground line (E)? and this troublesome poeration, it is quick to be not so good as electroscope.Moreover the working-yard is in a mess, and fragile universal meter adds and carries inconvenience, and is on-the-spot seldom with the such instrument of universal meter.Stagger the time but work as the mutual dress of zero line (N) and ground protection line (E), will pass through socket, the zero line in the feed circuit has been received household appliances shell.If it is disconnected that the insurance of power supply zero line is touched, " " will get back on " zero line " by electrical equipment (as bulb)---promptly scurry the shell of household electrical appliances, personal safety is caused very big threat.Obviously adorn mutually with " ground protection line " when " phase line " and stagger the time, more can cause harm life! Therefore quality testing department is to single-phase three pole socket internal wirings, and whether reliable, correct requirement be very tight, but suffer from the way that does not have a kind of simple possible; In addition, the auroral poles that the electroscope neon bulb sends is faint, and with the growth of operating period more and more a little less than.

Modern covil construction are electric; in order to take precautions against the harm of home electric electric leakage to life; except that adopting earthing of casing protection; electric administrative department is expressly provided; newly-built covil construction want each household that electric leakage protector is installed without exception, in case purpose is circuit or household electrical appliance leaks electricity, when the someone gets an electric shock again, when leakage current during greater than 30uA; electric leakage protector just should move, and blocks power supply.Past; detection to the leak source protector that installed; powerless; individual other technician adopts the method for bulb and temporary ground wire; between the phase line of socket and ground wire, test; the electric leakage protector switch motion; circuit is described; the electric leakage protector wiring is error-free; can't do you but in case when leakage switch occurring and being failure to actuate, judge that then the protective ground line has broken? do (can't determine that because of test pencil universal meter is also powerless) still leakage switch wiring have problem? this method is not only unreliable; and reach dangerous; careless slightly in the test, promptly can get an electric shock or the burn-out test utensil, it is dangerous therefore doing this test.

The utility model content

The purpose of this utility model, provide and a kind ofly can judge at the scene that the architectural electricity circuit is installed and the correct device of electric leakage protector wiring. it can accurately demonstrate significantly circuit install in all kinds of mistakes of existence, and structure is small and exquisite, and is easy to carry. not fragile.

The utility model is to adopt following scheme to realize: one have two or the box of three-terminal polarized plus plug bar in, two light emitting diodes are housed on its panel, light emitting diode is contacted mutually with dropping resistor and commutation diode in the box, a light emitting diode, show phase line and zero line relation, normally indicate as power supply; The another light emitting diode shows the relation between phase line and the ground protection line, does the whether normal indication of protection ground wire; Miniature microswitch is housed on the panel in addition, switch links to each other with anthropomorphic dummy's bulk resistor, alarm buzzer respectively, press simulation human electric shock's microswitch, the electric current that a 30uA---50uA is arranged is through anthropomorphic dummy's bulk resistor, between phase line and ground wire, flow, power supply is blocked in the quick acting of electric leakage protector switch, and two light emitting diodes all go out; Undesired as circuit, leakage switch is failure to actuate, and this moment, hummer communicated with the microswitch circuit, sent the sound, told the operator, and leakage switch or its interlock circuit have problem; Leakage switch is failure to actuate, and the sound does not take place again hummer simultaneously. and illustrate that detector is bad, should change another and detect, so this device also has self-checking function.

The utility model electric wiring, leakage detector is characterized in that the shell of detector has luminous demonstration, test button (miniature microswitch), hidden hummer, three-terminal polarized plus plug bar; Light emitting diode, dropping resistor, the diode series connection, light emitting diode is installed in the detector outer casing frontispiece; Test button (miniature microswitch) is connected with anthropomorphic dummy's bulk resistor; Hummer is connected with dropping resistor, diode, and hummer work is controlled by test button (miniature microswitch); Test button (miniature microswitch) is installed in outer casing frontispiece; The three-terminal polarized plus plug bar is installed in the shell reverse side.

The utility model is (or local completion after the covil construction electrical construction is finished, as quality testing), only need detector as household electrical appliance, attaching plug equally inserts in the indoor respective socket, just can show and test button from light, judge various wiring errors (specifically seeing attached list).Solved with test pencil and can not judge, all Problem-Errors during indoor electric is installed, and just can detect (electric leakage protector is contained in the each household ammeter box, generally outdoors) at the scene to electric leakage protector, use and observe easily, need not run and just know whether leakage switch moves, this detector is owing to be to use diode displaying, and indication is bright, is assigned in different colors in the use, then more directly perceived, come into plain view; Overcome test pencil and adopted the neon bulb of induction type luminous, flashed, under the high light line, shown unconspicuous defective.

Description of drawings

Fig. 1 is an outside drawing of the present utility model.

Fig. 2 is a fundamental diagram of the present utility model.

Embodiment

Elaborate in conjunction with the accompanying drawings:

Fig. 1 is a profile of the present utility model.Profile is made up of shell (6), hidden hummer (2), light emitting diode (1), (3) and miniature microswitch (4) and three-terminal polarized plus plug bar parts such as (5).Parts such as hummer, 4 of resistance, 3 of diodes, miniature microswitch are equipped with in the inside of detector.During use, detector as common single-phase three-pole attaching plug, is inserted in indoor single-phase three pole sockets, three-terminal polarized plus plug bar this moment (5) [is pressed Fig. 2 (5 ₁), (5 ₂), (5 ₃)], circuit to ground connection protective wire E, phase line L and zero line N detects respectively, detector is started working, as pilot lamp (3) is red, pilot lamp (1) is green, the work of two light emitting diodes shows, reflects in the circuit installation relation between phase line L, zero line N and the ground protection line E (promptly reflecting the various mistakes in the wiring); Show under the normal condition in light emitting diode (1), (3), press the miniature microswitch of test button (4), just can judge whether electric leakage (whether the wiring of electric leakage protector is correct); Determination methods for details see attached table.

Fig. 2 is a fundamental diagram.The profile element sequence number of mark is the same with the mark of Fig. 1.Dropping resistor 15 among Fig. 2, diode 14 is connected with light emitting diode 3, and the detection of forming power supply shows; Dropping resistor 7, diode 8 and light emitting diode 1 are formed ground connection protective wire E, and whether correct detection shows in wiring; Concrete determination methods is seen attached list.For example: when phase line (L) was opened a way, two pilot lamp did not all work; For another example: ground protection line E contact is unreliable, and then green luminotron does not work, or brightly a little while goes out for a moment; Miniature microswitch 4 is connected with anthropomorphic dummy's bulk resistor 11, diode 12, dropping resistor 10, hummer 2 (hummer is furnished with oscillatory circuit) respectively among Fig. 2, when two diode displaying of detector normal, just can be by actuating miniature microswitch 4, if the circuit wiring is correct, electric leakage protector just can move, block power supply, two

light emitting diodes

1,3 extinguish simultaneously; Do not go out when pressing the button 4, two

light emitting diodes

1,3, and hummer 2 sends sound when alarm, can judge that the electric leakage protector wiring is wrong, or electric leakage protector can not reliably working.

Subordinate list:

Phase line L, zero line N, ground protection line E.

Claims

1. electric wiring, leakage detector is characterized in that the shell of detector has luminous demonstration, test button, hidden hummer, three-terminal polarized plus plug bar; Light emitting diode, dropping resistor, the diode series connection, light emitting diode is installed in the detector outer casing frontispiece; Test button is connected with anthropomorphic dummy's bulk resistor; Hummer is connected with dropping resistor, diode, and hummer work is controlled by test button; Test button is installed in outer casing frontispiece; The three-terminal polarized plus plug bar is installed in the shell reverse side.