Anti-theft power cable

Abstract

To provide a cable which can be used for a device which immediately transmits an electric signal to an alarm device when the cable is cut, without relying on an infrared sensor, as a measure against cable theft damage. [Solution] A cable in which two thin low-current alarm wire cores 4d are bundled together in a flat shape and shielded is molded in parallel on the outside of the power conductor insulation within the outer sheath of a 1-, 2-, or 3-core copper or aluminum CV power supply cable, or within the outer sheath 1 of one of the stranded CVD or CVT cables.

Description

Technical Field

[0001] A power cable with an integrated warning cable is devised, which can minimize the damage caused by cable theft of outdoor facilities or prevent theft incidents by posting a notice of "using this cable", and can utilize the cutting signal from the devised product for immediate alarm.

[0002] Regarding theft incidents of thick power cables of outdoor facilities such as solar power that have occurred frequently in recent years, stakeholders in the solar power generation business, including countries promoting renewable energy, are greatly troubled.

[0003] Here, although the promulgation of regulations is expected through the confirmation of the qualifications of purchasing dealers and the identities of the people bringing in items, in the present invention, as a measure to minimize damage, a cable that can be used in a device that transmits an electrical signal to an immediate alarm device when the cable is cut without relying on an infrared sensor is devised.

[0004] If an alarm device for constant monitoring is constructed, immediate intimidating alarms when the cable is cut, activation of real cameras, and remote alarm monitoring via a network line can lead to initial actions for theft prevention and reporting to the police, minimizing damage.

[0005] For exposed solar power with many theft damages, posting a notice board of "using anti-theft cable" on surrounding fences etc. can also be expected to have the effect of discouraging theft actions.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] Outdoor ground-mounted solar power plants are large-scale facilities with few pedestrians at night and are vulnerable to locations with many thick cables. Thieves avoid being seen by people during the day, search for blind spots of surveillance cameras and sensors to check the cable laying situation, and there are signs that they have entered the inside of the enclosure to conduct reconnaissance. It is difficult to take measures against theft during non-powered hours, and a battle of wits is a reality, and we are struggling with countermeasures, but we want to discourage theft actions that prevent damage by posting the product of the present invention.

Effect of the Invention

[0008] In the current anti-theft measures of infrared sensors that cannot distinguish between people and birds, beasts, insects, weeds, etc., unnecessary patrol actions due to malfunction are inevitable during dangerous hours at night, and the anti-theft effect has become dull due to routine. In the present invention, since the cable cutting act can be used for an apparatus that immediately senses it, although it is a passive measure, it has the effect of minimizing theft damage as an epoch-making anti-theft measure.

[0009] When the cable of the invention is cut, the low-voltage loop circuit is disconnected, and a disconnection signal is sent to the installed alarm device. With the signal of the alarm device, it can be transmitted to a deterrence, camera, and remote reporting device, enabling immediate action of the security posture and early reporting to the police, and minimizing the damage.

Means for Solving the Problem

[0010] At the 4e part of the power load side connection part in FIGS. 8 and 9 of the cable installation image of the present invention, short-circuit two 4d alarm line cores and hide them with 7 insulating caps. Near the power supply side switch, take out the 4a low-voltage cable from the outer skin of one power cable, ground the 4b shield conductor of type D for noise prevention, and connect and use the two 4d alarm line cores of the loop circuit to the b contact signal circuit that operates when the alarm line is disconnected. Depending on the equipment situation, the connection methods on the load side and the power supply side may be reversed as described above, but the means and effects will not change.

Mode for Carrying Out the Invention

[0011] In order for the cable of the invention to effectively exert its effect, it is essential to install an inexpensive and simple "alarm device" that senses the disconnection of the low-voltage loop circuit.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

[0013] Figures 1, 4, and 6 are the perspective views of the present invention in which a flat shielded low-voltage cable that can be normally manufactured is combined with a normal power cable for manufacturing. Figures 2, 5, and 7 are the respective cross-sections

[0014] Figure 8 is a simple example of laying the cable of the invention. Figure 9 shows the principle that when the signal of the loop circuit of the low-voltage cable is disconnected, the b-contact circuit of the alarm device is released, leading to the operation of the alarm device

[0015] The CVT cables in Figures 6 and 7 are normally cut one by one in the state of Figure 9. However, since the power lines are stranded, it is difficult to pull out only one at the site, resulting in all being cut

Explanation of Reference Numerals

[0016] 1 Outer sheath of power cable (vinyl sheath) 2 Cross-linked polyethylene insulator of power core wire 3 Power core wire (copper or aluminum) 4a Outer sheath of alarm wire flat cable (vinyl sheath) 4b Shield conductor of alarm wire 4c Vinyl insulator of alarm wire 4d Alarm core wire (copper) 5 Inclusions (paper or polyethylene, etc.) 6 Terminals for power core wires 7 Insulating caps for power core wire terminals

Claims

[Claim 1] This cable is made by molding two thin low-current alarm wires into a flat shielded cable inside the outer sheath of a 1-, 2-, or 3-core copper or aluminum CV power supply cable, or inside the outer sheath of one of the stranded CVD or CVT cables, and molding it in parallel with the outside of the power conductor insulation.

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