CN2240729Y

CN2240729Y - Protector for preventing electricity fraudulent use and shock and leakage

Info

Publication number: CN2240729Y
Application number: CN 95233294
Authority: CN
Inventors: 李峰
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-02-28
Filing date: 1995-02-28
Publication date: 1996-11-20
Anticipated expiration: 2005-02-28

Abstract

The utility model belongs to a protector for preventing electricity fraudulent use and shock and leakage, comprising a n type buckle groove which is buckled on the connecting box of the kilowatt-hour meter. The lower surface of the buckle groove is provided with a single-phase current mode protector for preventing electricity shock and leakage. The load end of the protector is connected to the terminal of the connecting box. The protector for preventing electricity fraudulent use and shock and leakage is characterized in that the single-phase current mode protector for preventing electricity shock and leakage is provided with a power switch K whose main contact is respectively serially connected with the fire wire and the ground wire through the watt-hour meter. The drop indicating device for electricity stealing is merged on the power switch K.

Description

Anti-electricity-theft touching (leakage) non-electricity protector

It is anti-electricity-theft and touch the device of (leakages) electric protection to the utility model relates to a kind of energy, and single-phase watt-hour meter is used with throwing light on.

At present; comparatively Xian Jin anti-electricity-theft touching (leakage) non-electricity protector is as shown in the multi-function watt-hour meter controller of Chinese patent 91212908.5; though it has solved can be with the electromagnetic counter demonstration with multiple functions such as electric bell warning devices in the tax evasion electricity; but its electromagnetic type knife switch is as being withstood by force by the people when the stealing; still can not prevent the generation of electricity filching behavior effectively; the stealing load still can move; and the message register that plays the stealing indicative function in this controller is by resistance R 2; R3; diode; voltage stabilizing diode; controllable silicon; capacitor C; relay J and mechanical counter head constitute; thereby structure is complicated, and cost is also higher.

The purpose of this utility model just provide a kind of power-steeling preventing effect more perfect, simple in structure, reduce the anti-electricity-theft of cost and touch (leakage) non-electricity protector.

The utility model comprises that Jiong type catching groove snaps onto on the terminal box of watt-hour meter; cover the connection terminal (1 ') of watt-hour meter; (2 '); (3 '); (4 '); be connected to the single-phase electricity flow pattern below the catching groove and touch (leakage) non-electricity protector; the load termination of protector is in (2) of terminal box; (4) on the connection terminal; it is characterized in that touching power switch K on (leakage) non-electricity protector in the single-phase electricity flow pattern; the main contact of K is serially connected in the fire through watt-hour meter respectively; on the ground wire; stealing is fallen the board indicating device and is attempted by on the power switch K; after stealing falls to have on the board indicating device normally closed auxiliary contact K1 and relay ZJ polyphone; be attempted by the load side of power switch K; on the support of relay ZJ coil, be fixed with the suction iron of band probe; be used for adhesive direction board action, show to fall that with the corresponding masks peephole of direction board board takes place.

Power switch K of the present utility model is an automatic air-break switch, and the movable contact of the last main contact of the movable contact of the normally closed auxiliary contact K1 that is set up on the power switch K and power switch K is shared.

The utility model adopts former single-phase electricity flow pattern to touch automatic air-break switch on (leakage) non-electricity protector, and promptly power switch K controls the main line break-make, and when having guaranteed that switch handle is withstood stealing by force, main line still can disconnect, excision stealing load; Stealing shows the electromagnetic counter demonstration that has replaced former complexity with the relay adhesive, not only makes power-steeling preventing effect more perfect, and simple in structure, has reduced the product cost.

Now reach embodiment in conjunction with the accompanying drawings the utility model is described.

Fig. 1 is a shell synoptic diagram of the present utility model;

Fig. 2 touches the electrical schematic diagram of (leakage) non-electricity protector for the single-phase electricity flow pattern;

Fig. 3 falls the electrical schematic diagram of board indicating device for stealing;

Fig. 4 falls the equivalent circuit diagram of board indicating device for stealing among Fig. 3;

Fig. 5 is the electrical schematic diagram of the utility model and watt-hour meter configuration.

At first touch (leakage) non-electricity protector＜1 in the primary current type〉the power end of shell extend Jiong type catching groove＜2; the size of catching groove should be according to watt-hour meter＜9〉the terminal box size manufacture, should accomplish terminal box integral body that fastens watt-hour meter of not revealing closely.Require base＜3 of catching groove simultaneously 〉, the time should be able to closely contacting, do not stay any slit, so just can be the utility model＜10 with the base plate of distribution dial plate by dress and watt-hour meter＜9 three line a, b, c do not reveal be sealed in catching groove＜2 in.Touch (leakage) non-electricity protector＜1 in current mode〉the load end of shell, do terminal box＜4 the same with the watt-hour meter junction box form 〉, connect power lead and load line usefulness altogether.Touching (leakage) non-electricity protector＜1〉shell on be covered with little masks peephole＜5 and stealing direction board＜6, masks peephole＜5〉inlay direction board＜6 with transparency in the inside of shell; Current mode is touched (leakage) non-electricity protector＜1〉main composition be current transformer---CT, electrical apparatus release＜7〉and power switch K etc.What power switch K used is that the single-phase electricity flow pattern is touched the general plain edition automatic air-break switch of (leakage) non-electricity protector; used automatic air-break switch is exactly an example in the tower board DZL33-10 type earth leakage protective device that the security electrical appliances factory, Shanghai produces; the handle of this switch is when closing position; the switch main contact still can disconnect rapidly; behavior when the handle that has prevented K switch is withstood stealing by force; this point is different from the electromagnetic type knife switch of multi-function watt-hour meter controller; after withstanding stealing by force, characteristics of reporting to the police again with electric bell.Should set up a pair of normally closed auxiliary contact K1 on power switch K again, its movable contact should be shared with the movable contact of power switch K main contact, forms a double-throw switch form.Another technical characterictic of the present utility model is that the board indicating device is fallen in stealing, it has normally closed auxiliary contact K1, relay ZJ, inhales iron and probe＜8 〉, direction board＜6 form, probe is connected in to be inhaled on the iron, work to hold stealing direction board＜6 〉, as previously mentioned, be attempted by the load side of power switch K behind auxiliary contact K1 and the relay ZJ polyphone; The single-phase electricity flow pattern is touched (leakage) non-electricity protector＜1〉principle of work be: when touching (leakage) electricity and take place; flow through current transformer---current phasor among the CT and with non-vanishing; thus; in CT, produced the induction magnetic flux; so current transformer---the secondary of CT will produce induced potential E2; E2 is added in electrical apparatus release＜7〉coil on just produce electric current I 2; when fault current reaches certain value; I2 just is increased to is enough to promote electrical apparatus release＜7〉action; power switch K is cut off the electricity supply rapidly, reach the anti-purpose of touching (leakage) electricity.In the utility model, it is constant to touch (leakage) electric protection principle, existing main its anti-electricity-theft principle of describing.

Electrical schematic diagram in conjunction with Fig. 5 the utility model and watt-hour meter configuration describes.

Contact (1), (2), (3), (4) are respectively the utility model terminal box＜4〉on connection terminal, replaced watt-hour meter＜9〉connection terminal (1 '), (2 '), (3 '), (4 ').When winning watt-hour meter＜9〉on potential winding hook＜11〉stealing the time, because of the terminal box of watt-hour meter by catching groove＜2 good seal, so can't carry out stealing, and catching groove＜2〉a, b, three lines of c also good seal, also can't stealing at watt-hour meter and junction of the present utility model.

Connect a live wire separately to electrical appliance when short circuit (1), (2) connection terminal or from (1) connection terminal; or (1), (2) connection terminal changed preface when allowing watt-hour meter reversing stealing; because of at this moment flowing through current transformer---current phasor among the CT and non-vanishing; the same with touching (leakage) electric protection principle; power switch K disconnects rapidly, has only and eliminates after the stealing power turn-on K switch again.When withstanding stealing by force as if the handle with K switch, as previously mentioned, the switch main contact still can disconnect, excision stealing load R.

When short circuit (1) respectively, (2) connection terminal, (3), when (4) connection terminal carries out stealing, it is same that current transformer---the CT secondary also will produce induction current, therefore power switch K disconnects, load R still has electricity, but auxiliary contact K1 closure at this moment, relay ZJ gets, inhale the moving probe displacement of sheet iron strip, stealing direction board＜6〉fall in masks peephole＜5 locate, play the stealing warning function, and can carry out electric weight according to relevant regulations and remedy and impose a fine.Just can open after removing lead sealing because of shell of the present utility model has only, so only allow the relevant staff could be stealing direction board＜6 return to original position, retightened lead sealing then.What deserves to be mentioned is the shared movable contact of auxiliary contact K1 and power switch K, so relay ZJ is charged by mistake never, stealing direction board＜6〉misoperation never.

In sum; the utility model only touches on the shell of (leakages) non-electricity protector and the mode of connection in former single-phase electricity flow pattern and changes a social system a little; only increase the simple stealing of a cover on the electrical structure and fallen the board indicating device; and utilized the single-phase electricity flow pattern to touch the power switch K of (leakage) non-electricity protector itself; avoided the electromagnetic type knife switch on the multi-function watt-hour meter controller of the patent No. 91212908.5; withstood stealing by force by the people; and then the characteristics of reporting to the police with electric bell; therefore; the utility model is simple in structure; cost is low; power-steeling preventing effect is also more perfect, and power consumer is acceptant.

Implement the utility model; change a social system a little as long as touch on the shell of (leakages) non-electricity protector in all single-phase electricity flow patterns; touch in the single-phase electricity flow pattern increase on the electrical structure of (leakage) non-electricity protector a cover stealing fall the board indicating device and change the single-phase electricity flow pattern touch (leakage) non-electricity protector to external wiring way, be used the effect that can reach predetermined with watt-hour meter then.Detailed protocol is introduced in technology contents.Implement the technical program except that described technical characterictic, required single-phase electricity flow pattern is touched the detailed principle and its automatic air-break switch---the related contents such as structure of power switch K of (leakage) non-electricity protector, is those skilled in the art and knows, so do not give unnecessary details.

Claims

1; a kind of anti-electricity-theft touching (leakage) non-electricity protector; it comprises Jiong type catching groove＜2〉snap onto watt-hour meter＜9 terminal box on; catching groove＜2〉below the single-phase electricity flow pattern be housed touch (leakage) non-electricity protector＜1; protector＜1〉load termination in terminal box＜4 connection terminal on; it is characterized in that touching (leakage) non-electricity protector＜1 in the single-phase electricity flow pattern〉on power switch K is arranged; the board indicating device is fallen in stealing; main contact on the described power switch K is serially connected in respectively through watt-hour meter＜9〉fire; on the ground wire; normally closed auxiliary contact K1 is serially connected in stealing and falls in the board indicating device, and stealing is fallen the board indicating device and is attempted by on the power switch K.

2, anti-electricity-theft touching according to claim 1 (leakage) non-electricity protector it is characterized in that power switch K is an automatic air-break switch, and the movable contact of the main contact of the movable contact of the normally closed auxiliary contact K1 on the power switch K and power switch K is shared.

3, anti-electricity-theft touching according to claim 1 (leakage) non-electricity protector; after it is characterized in that stealing falls to have on the board indicating device normally closed auxiliary contact K1 and relay ZJ polyphone; be attempted by the load side of power switch K; on the support of relay ZJ coil, be fixed with suction iron＜8 of band probe 〉; be used for adhesive direction board＜6〉action, with direction board＜6〉corresponding masks peephole＜5〉show to fall that board takes place.