CN202486177U - Prepayment electric energy meter box - Google Patents
Prepayment electric energy meter box Download PDFInfo
- Publication number
- CN202486177U CN202486177U CN2012200707057U CN201220070705U CN202486177U CN 202486177 U CN202486177 U CN 202486177U CN 2012200707057 U CN2012200707057 U CN 2012200707057U CN 201220070705 U CN201220070705 U CN 201220070705U CN 202486177 U CN202486177 U CN 202486177U
- Authority
- CN
- China
- Prior art keywords
- electric energy
- energy meter
- meter
- electrically connected
- magnetic switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a prepayment electric energy meter box, which comprises an electric energy meter (1) arranged in a box body, a load control meter (2), an alarming circuit (3) and a time delay relay (4). The load control meter (2) is provided with in-meter 12V voltage (5). A magnetic control switch (6) is arranged on the electric energy meter (1). One end of the magnetic control switch (6) is electrically connected with one end of the in-meter 12V voltage (5), and the other end of the magnetic control switch (6) is electrically connected with one end of the alarming circuit (3). The other end of the in-meter 12V voltage (5) is electrically connected with the other end of the alarming circuit (3). Compared with the prior art, the prepayment electric energy meter box is provided with the magnetic control switch, and has the characteristics of capability of preventing a user from stealing electricity by utilizing strong magnetism, lower refitting cost and higher reliability.
Description
Technical field
The utility model relates to a kind of prepayment meter case.
Background technology
At present; There is the problem of the electricity that is stolen easily in the prepayment meter case of prior art, mainly is that will magnetize to the small-sized mutual inductor in the electronic electric energy meter in the magnetic field of strong magnet owing to leave electric energy meter when nearer when strong magnet; Make mutual inductor reach magnetic saturation; Thereby make transformer induced electric current less than electric current or induction less than actual current,, the view window of the prepayment meter case of prior art is broken so electricity filching person utilizes this defective easily; And strong magnet is attached to the electric energy meter front or the back side, thereby reach the purpose of stealing electricity.
The utility model content
The utility model provides a kind of magnetic switch that is provided with to above problem, can prevent to utilize the prepayment meter case of strong magnetic stealing.
The utility model overcomes the above problems used technical scheme: a kind of prepayment meter case with following structure is provided; It comprises the electric energy meter that is arranged in the casing, negative control table, warning circuit and timing relay; Described negative control table is provided with 12V voltage in the table; Described electric energy meter is provided with magnetic switch; One end of described magnetic switch is electrically connected with interior 12V voltage one end of table, and the other end of magnetic switch is electrically connected with an end of warning circuit, and the other end of 12V voltage is electrically connected with the other end of warning circuit in the described table.
After adopting above structure, compared with prior art, the utility model is owing to be provided with magnetic switch on electric energy meter; Then when permanent magnet during near electric energy meter, externally-applied magnetic field makes magnetic switch closed, again since magnetic switch be electrically connected with warning circuit and timing relay; So closed alert circuit and the timing relay of making of magnetic switch starts; And then make that trip(ping) circuit is connected behind the 30S, thus user's power supply cut off, and reach and prevent user's stealing purpose; Moreover magnetic switch is commercially available ripe commodity, so the repacking cost is lower, reliability is better.Therefore the utlity model has and be provided with magnetic switch, can prevent that the user from utilizing strong magnetic stealing, and the repacking cost is lower, reliability is characteristics preferably.
As improvement; Described magnetic switch is positioned at electric energy meter inside; Then make magnetic switch more near current transformer, and the action of magnetic switch is just more accurate, in the time of can preventing because of externally-applied magnetic field process prepayment meter case; Erroneous judgement occurs and cause unnecessary trouble, and then make that the dependability of the utility model is better to the user.
Description of drawings
Fig. 1 is the principle chart of the utility model prepayment meter case.
Fig. 2 is the wiring diagram of the utility model prepayment meter case.
As shown in the figure: 1, electric energy meter, 2, negative control table, 3, warning circuit, 4, timing relay, 5,12V voltage in the table, 6, magnetic switch.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model done further describing.
A kind of prepayment meter case as depicted in figs. 1 and 2; It comprises that (the prepayment meter case also comprises other components and parts certainly for the electric energy meter 1 that is arranged in the casing, negative control table 2, warning circuit 3 and timing relay 4; But because these components and parts are identical with prior art; And the inventive point of the invention does not relate to, so this no longer tired stating), described negative control table 2 is provided with 12V voltage 5 in the table; Described electric energy meter 1 is provided with magnetic switch 6; One end of described magnetic switch 6 is electrically connected with interior 12V voltage 5 one ends of table, and the other end of magnetic switch 6 is electrically connected with an end of warning circuit 3, and the other end of 12V voltage 5 is electrically connected with the other end of warning circuit 3 in the described table.
Described magnetic switch 6 is positioned at electric energy meter 1 inside.
During use; When permanent magnet during near the electric energy meter 1 in the prepayment meter box body, externally-applied magnetic field makes magnetic switch 6 closures, again since magnetic switch 6 be electrically connected with warning circuit 3 and timing relay 4; So magnetic switch 6 closed alert circuit 3 and the timing relays 4 of making start; And then make that trip(ping) circuit is connected behind the 30S, thus user's power supply cut off, and reach and prevent user's stealing purpose; After kicker magnet is removed, can make the user continue electricity consumption by the switch knob energized.Promptly according to shown in Figure 2, when electricity filching person with permanent magnet near electric energy meter 1 after, the inductor CG closing of contact of magnetic switch 6 starts auxiliary reclay KM; After the auxiliary reclay startup, on-delay trip(ping) circuit after the moving together contact KM1 closure waits to accomplish time-delay back disconnect user power supply, and this moment, the road was closed in break contact KM2 disconnection locking, as long as permanent magnet is not removed, then power switch closes not brake application forever; After permanent magnet is removed, can close a floodgate by the SD1 switch knob, continue to supply power to the user.
Above embodiment is merely the preferred embodiment of the utility model, and the utility model is not limited only to above embodiment and also allows other structural change, allly in the utility model rights to independence claimed range, changes, and all belongs to the utility model protection domain.
Claims (2)
1. prepayment meter case; It comprises the electric energy meter (1) that is arranged in the casing, negative control table (2), warning circuit (3) and timing relay (4); Described negative control table (2) is provided with 12V voltage (5) in the table; It is characterized in that: described electric energy meter (1) is provided with magnetic switch (6); One end of described magnetic switch (6) is electrically connected with interior 12V voltage (5) one ends of table, and the other end of magnetic switch (6) is electrically connected with an end of warning circuit (3), and the other end of 12V voltage (5) is electrically connected with the other end of warning circuit (3) in the described table.
2. prepayment meter case according to claim 1 is characterized in that: described magnetic switch (6) is positioned at electric energy meter (1) inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200707057U CN202486177U (en) | 2012-02-29 | 2012-02-29 | Prepayment electric energy meter box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200707057U CN202486177U (en) | 2012-02-29 | 2012-02-29 | Prepayment electric energy meter box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202486177U true CN202486177U (en) | 2012-10-10 |
Family
ID=46960591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200707057U Expired - Lifetime CN202486177U (en) | 2012-02-29 | 2012-02-29 | Prepayment electric energy meter box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202486177U (en) |
-
2012
- 2012-02-29 CN CN2012200707057U patent/CN202486177U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 315191 Yinzhou Industrial Park, Zhejiang, Ningbo, Yinzhou District, Ningbo Patentee after: NINGBO SANXING MEDICAL ELECTRIC CO., LTD. Address before: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Patentee before: Ningbo Sanxing Electric Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |