CN201170913Y - Power line anti-theft alarm - Google Patents
Power line anti-theft alarm Download PDFInfo
- Publication number
- CN201170913Y CN201170913Y CNU2007200556855U CN200720055685U CN201170913Y CN 201170913 Y CN201170913 Y CN 201170913Y CN U2007200556855 U CNU2007200556855 U CN U2007200556855U CN 200720055685 U CN200720055685 U CN 200720055685U CN 201170913 Y CN201170913 Y CN 201170913Y
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- CN
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- Prior art keywords
- alarm
- power
- circuit
- theft alarm
- respectively connected
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Abstract
The utility model relates to an anti-theft alarm of a power circuit. Mains transformers (L1, L2, L3) are respectively connected in parallel between three live wires (A, B, C) and a zero line (N); the output ends of the mains transformers (L1, L2, L3) are respectively connected with bridge rectifiers (D1-D4, D5-D8, D9-D12); the bridge rectifiers (D1-D4, D5-D8, D9-D12) are respectively connected with middle relays (K1, K2, K3); after being connected together in parallel, the respective normally closed contact pairs (K1-2, K2-2, K3-2) of the middle relays (K1, K2, K3) are connected with an alarm circuit composed of a direct-current power supply (E) and a sound alarm (DD). The anti-theft alarm can separately detect each phase wire, alarm time can be freely set, and the anti-theft alarm has the advantages of stable and reliable operation, long service life, convenient installation and maintenance, simple structure and low cost.
Description
Technical field
The utility model relates to a kind of safety guard of power-supply unit, is a kind of power circuit burglar alarm specifically.
Background technology
Along with the development of power construction, the electrical network of outskirts of a town and outlying mountain area has obtained popularizing, and the people not only can have access to electricity, and can be development of countryside good investment environment is provided.But, under the driving of individual interest, will steal power equipment as the approach of making a good deal of money because a few peoples' is very weak in the understanding of law.The stolen situation of the electric power facility in many places is serious day by day in recent years, and substation transformer particularly in service and low-voltage power line cause line interruption, the inconvenience of bringing loss and causing the people to live for electricity consumption producer.
Summary of the invention
The purpose of this utility model provide a kind of simple in structure, cost is low, the power circuit burglar alarm of stable and reliable operation.
The purpose of this utility model can realize by following technical measures:
A kind of power circuit burglar alarm, between every phase firewire and zero line, be parallel with power transformer respectively, the output terminal of power transformer is connected to the rectifier bridge heap respectively, the rectifier bridge heap is connected to auxiliary reclay respectively, is serially connected in the alarm circuit that is made of direct supply and voice guard after the auxiliary reclay a pair of normally closed contact parallel connection separately again.
In alarm circuit, timing relay is installed also.
The utility model beneficial effect is: owing to be connected to auxiliary reclay by reducing rectification respectively between every phase firewire and zero line, be serially connected in again in the alarm circuit that constitutes by direct supply and voice guard after the auxiliary reclay a pair of normally closed contact parallel connection separately, can carry out phase-splitting to each phase line respectively detects, if have any phase line stolen, all can report to the police by the voice guard in the alarm circuit.Timing relay is installed, and time of fire alarming can freely be provided with.Because alarm circuit is power autonomous, be not subjected to ectocine in addition.The utility model stable and reliable operation, the life-span is long, and installation and operation is easy to maintenance, and it is simple in structure, and cost is low.
Description of drawings
Fig. 1 is a circuit diagram of the present utility model.
Embodiment
With reference to Fig. 1, be example with the AC380V power circuit, between three-phase firewire A, B, C and zero line N, be parallel with power transformer L respectively
1, L
2, L
3, power transformer L
1, L
2, L
3Voltage transitions can be become the power supply of 12V, power transformer L
1, L
2, L
3Output terminal be connected to rectifier bridge heap D respectively
1～D
4, D
5～D
8, D
9～D
12, rectifier bridge heap D
1～D
4, D
5～D
8, D
9～D
12Be connected to auxiliary reclay K respectively
1, K
2, K
3, auxiliary reclay K
1, K
2, K
3A pair of normally closed contact K separately
1～2, K
2～2, K
3～2Be serially connected in again after the parallel connection in the alarm circuit that constitutes by direct supply E and voice guard DD.Wherein, direct supply E is 12V.
Automatically terminate for realize reporting to the police, alarm settings in the regular hour, as 3 minutes, 4 minutes or 5 minutes etc., in alarm circuit, also is equipped with timing relay K
4, timing relay K
4A pair of normally opened contact K
4～1DD connects with voice guard.
For avoiding false alarm when having a power failure, hand switch Q also is housed on power circuit, when having a power failure, can automatically terminate alarm circuit by opening hand switch Q.
Its principle of work is: supply line moves just often, and power supply is through power transformer L
1, L
2, L
3Step-down, rectifier bridge heap D
1～D
4, D
5～D
8, D
9～D
12After the rectification, auxiliary reclay K
1, K
2, K
3Must be electric, a pair of normally closed contact K separately
1～2, K
2～2, K
3～2Discharge, alarm circuit opens circuit, and does not work.
When the people steals supply line, when any phase electric wire is cut off, relay electric-loss in the middle of it, corresponding normally closed contact adhesive is connected alarm circuit, and the power supply that direct supply E provides will make timing relay K
4Must be electric, its normally opened contact K
4～1Adhesive, voice guard DD sends alarm sound, can prevent effectively that supply line is stolen.To timing relay K
4The setting time of fire alarming time, can automatically terminate alerting signal.
The utility model can be used for substation transformer, the following power circuit burglar alarm of 400V, and is particularly for the low-voltage power line and the substation transformer of remote countryside, more practical.
Claims (2)
1, a kind of power circuit burglar alarm, it is characterized in that between every phase firewire and zero line, being parallel with respectively power transformer, the output terminal of power transformer is connected to the rectifier bridge heap respectively, the rectifier bridge heap is connected to auxiliary reclay respectively, is serially connected in the alarm circuit that is made of direct supply and voice guard after the auxiliary reclay a pair of normally closed contact parallel connection separately again.
2, power circuit burglar alarm according to claim 1 is characterized in that in alarm circuit, and timing relay also is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200556855U CN201170913Y (en) | 2007-08-13 | 2007-08-13 | Power line anti-theft alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200556855U CN201170913Y (en) | 2007-08-13 | 2007-08-13 | Power line anti-theft alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201170913Y true CN201170913Y (en) | 2008-12-24 |
Family
ID=40209965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200556855U Expired - Fee Related CN201170913Y (en) | 2007-08-13 | 2007-08-13 | Power line anti-theft alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201170913Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105551160A (en) * | 2016-03-04 | 2016-05-04 | 北京云星宇科技服务有限公司 | Antitheft and alarm system of cable |
| CN112396733A (en) * | 2020-11-26 | 2021-02-23 | 珠海格力电器股份有限公司 | Alarm processing method and device, storage medium and electronic device |
-
2007
- 2007-08-13 CN CNU2007200556855U patent/CN201170913Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105551160A (en) * | 2016-03-04 | 2016-05-04 | 北京云星宇科技服务有限公司 | Antitheft and alarm system of cable |
| CN105551160B (en) * | 2016-03-04 | 2019-11-05 | 北京云星宇科技服务有限公司 | Cable anti-theft alarm system |
| CN112396733A (en) * | 2020-11-26 | 2021-02-23 | 珠海格力电器股份有限公司 | Alarm processing method and device, storage medium and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081224 Termination date: 20090914 |