Anti-theft power alarm pair cable

Abstract

As a countermeasure to the frequent cable thefts at solar power plants and outdoor facilities, we offer CV1C cables that do not rely on infrared sensors but instantly transmit an electrical signal to an alarm device when the cable is cut. [Solution] This CV1C cable includes a power cable outer sheath 1, a power core cross-linked polyethylene insulator 2, a copper or aluminum power core 3, and an alarm line. The alarm line includes an alarm line outer sheath 4a, an alarm line shield conductor 4b, an alarm line vinyl insulator 4c, and an alarm line core 4d. Even when not generating power, cutting the cable can be used to instantly activate an electric signal alarm device. Furthermore, by monitoring the permanently installed intimidation and remote monitoring cameras, immediate security measures can be taken and police notified. Since cutting is an initial step in a theft attempt, damage can be minimized.

Description

[Technical Field]

[0001] The previous product was a one-power line and two-alarm wire integral molding, but this one-power line and one-alarm wire pair is integrally molded to reduce cable costs.Since malfunctions due to induced voltage can be ignored in solar DC power circuits, there is no need to shield the alarm wire, which also has the effect of further cost reduction.

[0002] The recent spate of thefts of metal objects, including thick power cables from outdoor facilities, including solar power plants, has caused great confusion among those involved in the solar power generation business, including countries that are promoting renewable energy.

[0003] Recently, it has been expected that a law will be enacted to check the qualifications of buyers and the identity of people bringing in items, but as a measure to minimize damage, this invention has devised a cable that can be used in a device that immediately transmits an electric signal to an alarm device when the cable is cut, without relying on an infrared sensor.

[0004] If you set up an alarm system that monitors constantly, an immediate warning alarm will sound if the cable is cut, and a real camera will be activated. Furthermore, remote alarm monitoring via the internet will lead to initial theft prevention measures and police reports, minimizing damage.

[0005] In the case of outdoor solar power plants, which are prone to theft, posting a sign on the surrounding fence or external enclosure stating "Anti-theft power alarm pair cable in use" can be expected to discourage thieves from attempting to steal. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Utility model application acceptance number 52500611426 (previous application by the applicant) Summary of the Invention [Problem to be solved by the invention]

[0007] Outdoor ground-type solar power plants are large facilities with little foot traffic at night, and areas with many thick cables are easy targets. There is evidence that thieves are trying to avoid public attention during the day to check the cable installation status by searching for blind spots in surveillance cameras and sensors, and even breaking into the enclosure to investigate. Preventing theft during times when the power is off is difficult and a battle of wits is a reality, and countermeasures are being struggled with, but we hope that posting this invention will prevent damage and discourage thieves from attempting to do so. [Effects of the Invention]

[0008] Currently widely used security measures using infrared sensors that cannot distinguish between people, birds, animals, insects, weeds, etc., are forced to perform unnecessary patrols during dangerous times at night due to malfunctions, which eventually leads to a rut and the security effect is diminished. This invention can be used to create a device that immediately detects cable cutting attempts, so it is a passive but groundbreaking security measure that is effective in minimizing theft damage in large-scale facilities.

[0009] This is to measure the cost reduction effect on the previously designed product.

[0010] When the cable is cut, the low-voltage loop circuit breaks, sending a signal to the installed alarm device. The alarm device's signal is then sent to intimidation devices, cameras, and remote reporting devices, allowing for immediate security measures and prompt notification to the police, minimizing damage. [Means for solving the problem]

[0011] In the cable installation images of this invention, Figures 6 and 7, at the power load side connection part 4e, the 4c ​​alarm wire is taken out from each power cable, the 4d core wire is shorted and hidden with insulating tape. The 4c ​​alarm wire is also taken out near the power supply side switch in the same way as on the load side, and the 4b shielded conductor is grounded with type D grounding to prevent noise. The two 4d core wires of the alarm wire that form a loop circuit are connected to a b-contact signal circuit (a circuit that detects disconnection) that is activated when the alarm wire is broken. The 4b shield is omitted in DC power circuits. In the actual equipment, the connection methods on the load side and power supply side can be reversed as described above, with the same means and effect. DETAILED DESCRIPTION OF THE INVENTION

[0012] In order for the proposed cable to be effective, it is essential to install an inexpensive and simple "alarm device" that detects breakage of the low-voltage loop circuit. [Brief explanation of the drawings]

[0013] [Figure 1] Figure 1 shows the appearance of a CV1C cable. [Figure 2] Figure 2 shows the cross section of a CV1C cable. [Figure 3] Figure 3 is a detailed cross-sectional view of the warning line [Figure 4] Figure 4 shows the appearance of the CVT and CVD cable. [Figure 5] Figure 5 shows a cross section of a CVT cable. [Figure 6] Figure 6 shows an image of the cable installation. [Figure 7] Figure 7 shows an image of the cable being cut.

[0014] Figures 1 and 4 show the new design, which combines a normally produced alarm wire (with and without noise prevention shielding) (Figure 3) with a power cable, and Figures 2 and 5 show cross sections of each.

[0015] Figure 6 shows a simple example of laying the proposed cable. Figure 7 shows the principle behind the signal break in the loop circuit of the low-voltage alarm line, which causes the b-contact circuit of the alarm device to open, leading to the activation of the alarm device. [Explanation of symbols]

[0016] 1. Power cable outer jacket (vinyl sheath) 2. Power core wire cross-linked polyethylene insulation 3 Power core wire (copper or aluminum) 4a Alarm wire outer jacket (vinyl sheath) 4b Alarm line shield conductor (to prevent noise voltage) 4c Alarm wire vinyl insulator 4d alarm wire core wire (copper) 5. Inclusions (paper, polyethylene, etc.) 6 Power core terminal 7 Insulating cap for power core wire terminal 8 Protective piping for laying cables, etc.

Claims

[Claim 1] A cable consisting of a single-core copper or aluminum power supply CV cable and two stranded CVD or CVT cables, each with a thin, low-voltage wire shielded against induction current inside the outer sheath.

Images