CN203433617U - Antitheft system for three-phase power cable - Google Patents
Antitheft system for three-phase power cable Download PDFInfo
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- CN203433617U CN203433617U CN201320460231.1U CN201320460231U CN203433617U CN 203433617 U CN203433617 U CN 203433617U CN 201320460231 U CN201320460231 U CN 201320460231U CN 203433617 U CN203433617 U CN 203433617U
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- power cable
- alarm
- phase power
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Abstract
The utility model disclose an antitheft system for a three-phase power cable, and the system is characterized in that the system comprises an alarm loop and an excitation loop; the alarm loop comprises three groups of normally-closed contacts, an alarm, and a power supply; the three groups of normally-closed contacts are in parallel connection and then sequentially in series connection with the alarm and the power supply to form the alarm loop; the excitation loop comprises three groups of relay coils which are respectively connected with two phases of the three-phase power cable; the three groups of relay coils are in one-to-one correspondence to the three groups of normally-closed contacts; when one phase of the three-phase power cable is cut off at first, the relay coil, which is connected with the phase of the three-phase power cable, controls the corresponding normally-closed contact to close, and the alarm loop is on, and the alarm gives an alarm; and the system provided by the utility model is advantageous in that the system gives an alarm timely to remind security personnel for timely control when the cable is cut off, thereby preventing the power cable from being stolen and reducing the loss caused by theft.
Description
Technical field
the utility model relates to a kind of cable anti-theft system, especially a kind of three-phase power cable burglary-resisting system.
Background technology
in the use of hanging at crane gantry, the general cable drum that adopts of conduction is powered, be exactly that electrical source of power is rolled onto on cable drum, it is all outdoor application that general large-sized gantry hangs, and current ratio is larger, the power cable on reel is thicker, can cause like this some lawless persons can play the idea of stealing this power cable, they put on insulated shoes, directly that cable is sawed-off.Power cable will be stolen like this, and because power cable price comparison is large, and applying unit can standby this cable yet, once stolen, will face from new purchase, has so not only brought direct loss also to bring indirectly loss.
Summary of the invention
the utility model object is: provide a kind of simple in structure, and can play when cable is cut off and give the alarm in time, the three-phase power cable burglary-resisting system that prompting Security Personnel controls in time.
the technical solution of the utility model is: a kind of three-phase power cable burglary-resisting system, it is characterized in that, comprise alarm circuit and exciting loop, described alarm circuit comprises three groups of normally closed contacts, alarm and power supply, after described three groups of normally closed contact parallel connections successively with alarm, power supply alarm circuit in series; Described exciting loop comprises three group relay coils, described three group relay coils are connected with the wherein two-phase power cable in three-phase power cable respectively, and this three group relaies coil is corresponding one by one with three groups of normally closed contacts respectively, when a phase power cable wherein is first cut off, it is closed that the relay coil connecting with first cut power cable is controlled its corresponding normally closed contact, alarm circuit forms path, alarm equipment alarm.
preferably, described power supply charges by any phase power cable in connected zero line and three-phase power cable, forms power source charges loop.
preferably, described power supply is ups power.
the utility model has the advantages that: the three-phase power cable burglary-resisting system of the utility model design, when cable is cut off, gives the alarm in time, and prompting Security Personnel controls in time, thereby prevents that power cable is stolen, reduces stolen loss.
Accompanying drawing explanation
below in conjunction with drawings and Examples, the utility model is further described:
fig. 1 is the circuit theory diagrams of the utility model three-phase power cable burglary-resisting system;
wherein: 1 alarm circuit, 1a normally closed contact, 1b alarm, 1c power supply, 2 exciting loops, 2a relay coil, 3 power source charges loops.
Embodiment
embodiment: shown in Fig. 1, a kind of three-phase power cable burglary-resisting system, comprise alarm circuit 1, exciting loop 2 and power source charges loop 3, alarm circuit 1 comprises three groups of normally closed contact 1a, alarm 1b and power supply 1c, after three groups of normally closed contact 1a parallel connection successively with alarm 1b, power supply 1c alarm circuit 1 in series; Exciting loop 2 comprises three group relay coil 2a, three group relay coil 2a are connected with the wherein two-phase power cable in three-phase power cable A, B, C respectively, and this three group relaies coil 2a is corresponding one by one with three groups of normally closed contact 1a respectively, when a phase power cable wherein is first cut off, it is closed that the relay coil 2a connecting with first cut power cable controls its corresponding normally closed contact 1a, alarm circuit 1 forms path, and alarm 1b reports to the police; Simultaneously power supply 1c charges by any phase power cable in connected zero line N and three-phase power cable A, B, C, forms power source charges loop 3, and power supply 1c is ups power.
the three-phase power cable burglary-resisting system of the utility model design, when cable is cut off, gives the alarm in time, and prompting Security Personnel controls in time, thereby prevents that power cable is stolen, reduces stolen loss.
above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All modifications of doing according to the Spirit Essence of the utility model main technical schemes, within all should being encompassed in protection domain of the present utility model.
Claims (3)
1. a three-phase power cable burglary-resisting system, it is characterized in that, comprise alarm circuit (1) and exciting loop (2), described alarm circuit (1) comprises three groups of normally closed contacts (1a), alarm (1b) and power supply (1c), after described three groups of normally closed contacts (1a) parallel connection successively with alarm (1b), power supply (1c) alarm circuit in series (1); Described exciting loop (2) comprises three group relay coils (2a), described three group relay coils (2a) are connected with the wherein two-phase power cable in three-phase power cable respectively, and this three group relaies coil (2a) is corresponding one by one with three groups of normally closed contacts (1a) respectively, when a phase power cable wherein is first cut off, control its corresponding normally closed contact (1a) closure with the relay coil (2a) that first cut power cable connects, alarm circuit (1) forms path, and alarm (1b) is reported to the police.
2. three-phase power cable burglary-resisting system according to claim 1, is characterized in that, described power supply (1c) charges by any phase power cable in connected zero line and three-phase power cable, forms power source charges loop (3).
3. three-phase power cable burglary-resisting system according to claim 1, is characterized in that, described power supply (1c) is ups power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320460231.1U CN203433617U (en) | 2013-07-30 | 2013-07-30 | Antitheft system for three-phase power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320460231.1U CN203433617U (en) | 2013-07-30 | 2013-07-30 | Antitheft system for three-phase power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203433617U true CN203433617U (en) | 2014-02-12 |
Family
ID=50062643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320460231.1U Expired - Fee Related CN203433617U (en) | 2013-07-30 | 2013-07-30 | Antitheft system for three-phase power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203433617U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107452172A (en) * | 2017-09-20 | 2017-12-08 | 上海鑫灵电力科技发展有限公司 | One kind is stopped cable monitoring system |
-
2013
- 2013-07-30 CN CN201320460231.1U patent/CN203433617U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107452172A (en) * | 2017-09-20 | 2017-12-08 | 上海鑫灵电力科技发展有限公司 | One kind is stopped cable monitoring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20200730 |