CN2751312Y - Electric wire alarm device - Google Patents
Electric wire alarm device Download PDFInfo
- Publication number
- CN2751312Y CN2751312Y CN 200420060909 CN200420060909U CN2751312Y CN 2751312 Y CN2751312 Y CN 2751312Y CN 200420060909 CN200420060909 CN 200420060909 CN 200420060909 U CN200420060909 U CN 200420060909U CN 2751312 Y CN2751312 Y CN 2751312Y
- Authority
- CN
- China
- Prior art keywords
- switch
- contactor
- current contactor
- alternate current
- relay
- 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 - Fee Related
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Abstract
The utility model discloses an electric wire alarm device and is composed of a shell, a wire connecting post, an alternate current contactor, a relay, a bell, a power supply and a three-phase electric wire, wherein both end heads of the inductance coil of the alternate current contactor are connected with a fire wire a and a zero wire. One end of the K3 switch of the alternate current contactor is connected with the K2 switch of the alternate current contactor in series, and the connected point of the K3 switch and the K2 switch of the alternate current contactor is connected with a conducting wire and the end head of a relay coil. The other end of the K3 switch of the alternate current contactor is connected with the fire wire a, and the K1 switch of the alternate current contactor is connected with the K2 switch of the alternate current contactor in series. The serial connected point of the K4 switch and the K2 switch of the alternate current contactor is connected with the positive pole of a battery by the conducting wire, and the other end of the K4 switch of the alternate current contactor is connected with the zero wire. The electric wire alarm device only adopts a plurality of elements and achieves the alarm action of an electric wire. The electric wire alarm device has the advantages of simple structure and low cost.
Description
Technical field
The utility model relates to a kind of security protection technology field, specifically, relates to a kind of warning device that is directed to power cord.
Background technology
At present, the agricultural three-phase power electric wire in vast rural area is usually stolen, causes very big economic loss for country and peasant, delays rural electricity consumption, causes very big loss.And it is also relatively more rare at the burglar alarm of agricultural power cord at present.State Patent Office disclosed a kind of pulsed electric wire anti-theft alarm on May 22nd, 1991; application number 90218498; it forms (how much looking branch road to be protected) by main frame 0 and extension set 1-30 portion, and main frame is installed in power distribution room, and extension set is installed in each respectively and uses electric unit.Produce a specific coded pulse by main frame 0 and deliver to each extension set, in order to the whether connection of control extension set warning circuit with electric unit in company with civil power.In case transmission line of electricity is short-circuited, open circuit etc. when stealing the line electric wire, the extension set of that branch road is reported to the police immediately.Its shortcoming is complex structure, cost height.
Technology contents
The utility model is at the deficiencies in the prior art, provides a kind of simple in structure, the power cord warning device that cost is low.
The purpose of this utility model is such realization, the power cord warning device is by casing, binding post, A.C. contactor, relay, electric bell, power supply and three-phase power line are formed, and it is characterized in that two terminations of the telefault of described A.C. contactor start to exchange fire line a and zero line, K3 switch one end of A.C. contactor links to each other with the relay coil termination with lead with the K1 switch of A.C. contactor serial connection and tie point, and the other end of the K3 switch of A.C. contactor connects live wire a; The K1 switch of A.C. contactor is connected in series with the K2 switch of A.C. contactor, and the K4 switch of A.C. contactor connects anode with being connected in series a little of K2 switch of A.C. contactor with lead, the other end connecting to neutral line of the K4 switch of A.C. contactor; After succeeding the electrical equipment cathode contact, another termination of relay coil connects battery cathode; Relay normally open contact position, relay normally closed contact connect electric bell one termination, and another termination of electric bell connects anode; Live wire a links to each other by telefault with the tail end of zero line, and the tail end of live wire b and zero line are connected.
Because the utility model has only adopted several elements just to realize warning effect to power cord, and is simple in structure, with low cost.
Description of drawings
Fig. 1 is a power cord warning device schematic diagram.
Embodiment
Embodiment 1: the utility model is done describing in further detail below in conjunction with accompanying drawing, in the use of rural power electric wire, zero line 1 is vacant, so zero line 1 can be done the loop of power cord warning device, the power cord warning device is by casing, binding post, A.C. contactor 3, relay 4, electric bell 5, power supply 6 and three-phase power line are formed, two terminations of the telefault of described A.C. contactor start to exchange fire line a2 and zero line 1, K3 switch 14 1 ends of A.C. contactor 3 link to each other with relay 4 coil ends with lead with the K1 switch of A.C. contactor 3 12 serial connections and tie point, and the other end of the K3 switch of A.C. contactor 3 connects live wire a2; The K1 switch 12 of A.C. contactor 3 is connected in series with the K2 switch 11 of A.C. contactor, and the K4 switch 13 of A.C. contactor 3 connects battery 6 positive poles with being connected in series a little of the K2 switch 11 of A.C. contactor 3 with lead, the other end connecting to neutral line 1 of the K4 switch 13 of A.C. contactor 3; Another termination of relay 4 coils connects battery 6 negative poles after succeeding electrical equipment 4 cathode contacts 8; Relay 4 normally opened contacts 10 positions, relay 4 normally closed contacts 8 connect electric bell 5 one terminations, and electric bell 5 another terminations connect battery 6 positive poles; Live wire a2 links to each other by telefault 7 with the tail end of zero line 1, and the tail end of live wire b15 and zero line 1 are connected.
The principle of work of the present utility model and the course of work are: when line of electric force has electricity, because zero line 1 is connected 3 actions of 380V A.C. contactor with live wire b15, K1 switch 12 closures, K2 switch 11 closures, K3 switch 14, K4 switch 13 is opened, battery 6 electric currents are set out through K2 switch 11 by positive pole, and K1 switch 12 is through telefault inflow battery 6 negative poles of relay 4, so relay 4 actions, relay 4 cathode contacts 9 and normally opened contact 10 adhesives, electric bell 5 no currents pass through, and are failure to actuate.When the people cut off live wire b15 or zero line 1, the power supply of A.C. contactor became 220V, and it is inoperative that the old friend flows contactor, cause K1 switch 12, K2 switch 11 opens, K3 switch 14, K4 switch 13 closures, simultaneously because zero line 1 is cut off to cause by the people with live wire b15 opens circuit, and the electric current of the telefault of the A.C. contactor 3 of flowing through does not reach relay 4 starting current threshold values, and relay 4 does not start, relay 4 normally closed contacts 8 closures, electric bell 5 circuit communication, electric bell 5 action alarms have the people to steal line.
When line of electric force did not have electricity, A.C. contactor was inoperative, K1 switch 12, K2 switch 11 opens, K3 switch 14, K4 switch 13 closures, battery 6 electric currents are set out through K switch 4 by positive pole, zero line 1, live wire b15, telefault 7 flows back to battery 6 negative poles to the live wire a2 K3 switch 14 of flowing through again through relay 4 coils, relay 4 actions, relay normally open contact 10 closures, electric bell 5 loops disconnect.When the people cuts zero line, cause relay normally closed contact 8 closures, the electric bell circuit communication, the electric bell alarm has the people to steal line.
Claims (1)
1, a kind of power cord warning device, by casing, binding post, A.C. contactor, relay, electric bell, power supply and three-phase power line are formed, it is characterized in that: two terminations of the telefault of described A.C. contactor start to exchange fire line and zero line, K3 switch one end of A.C. contactor links to each other with the relay coil termination with lead with the K1 switch of A.C. contactor serial connection and tie point, the other end connection live wire of the K3 switch of A.C. contactor; The K1 switch of A.C. contactor is connected in series with the K2 switch of A.C. contactor, and the K4 switch of A.C. contactor connects anode with being connected in series a little of K2 switch of A.C. contactor with lead, the other end connecting to neutral line of the K4 switch of A.C. contactor; After succeeding the electrical equipment cathode contact, another termination of relay coil connects battery cathode; Relay normally open contact position, relay normally closed contact connect electric bell one termination, and another termination of electric bell connects anode; Live wire links to each other by telefault with the tail end of zero line, and the tail end of live wire and zero line are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420060909 CN2751312Y (en) | 2004-08-26 | 2004-08-26 | Electric wire alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420060909 CN2751312Y (en) | 2004-08-26 | 2004-08-26 | Electric wire alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2751312Y true CN2751312Y (en) | 2006-01-11 |
Family
ID=35932488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420060909 Expired - Fee Related CN2751312Y (en) | 2004-08-26 | 2004-08-26 | Electric wire alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2751312Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109991503A (en) * | 2017-12-19 | 2019-07-09 | 霍尼韦尔国际公司 | Electrical connection and disconnect the equipment of part of electric wiring, public address system, failure in detection electric wiring method |
| CN110554271A (en) * | 2019-08-29 | 2019-12-10 | 格力电器（武汉）有限公司 | Air conditioner wiring detection device, test system and detection method |
-
2004
- 2004-08-26 CN CN 200420060909 patent/CN2751312Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109991503A (en) * | 2017-12-19 | 2019-07-09 | 霍尼韦尔国际公司 | Electrical connection and disconnect the equipment of part of electric wiring, public address system, failure in detection electric wiring method |
| CN109991503B (en) * | 2017-12-19 | 2022-06-21 | 霍尼韦尔国际公司 | Device for electrically connecting and disconnecting parts of an electrical line, public address system, method for detecting a failure in an electrical line |
| US11425501B2 (en) | 2017-12-19 | 2022-08-23 | Honeywell International Inc. | Device for electroinically connecting and disconnecting portions of an electrical line, public address system, method for detecting a failure in an electrical line |
| CN110554271A (en) * | 2019-08-29 | 2019-12-10 | 格力电器（武汉）有限公司 | Air conditioner wiring detection device, test system and detection method |
| CN110554271B (en) * | 2019-08-29 | 2022-01-21 | 格力电器（武汉）有限公司 | Air conditioner wiring detection device, test system and detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |