KR20200107865A - Optical-Power Composite Cable And Optical-Power Composite System Having The Same - Google Patents

Abstract

The present invention relates to a photoelectric composite cable and a photoelectric composite system having the same. The photoelectric composite cable may have a power unit for power supply and an optical unit for communication, have a minimized outer diameter to enable pneumatic installation in small microducts while transmitting sufficient power to a receiver even when the voltage drop occurs due to long-distance transmission, and provide power and high-speed communication at the same time.

Description

Optical-Power Composite Cable And Optical-Power Composite System Having The Same}

The present invention relates to a photoelectric composite cable for pneumatic laying and a photoelectric composite system having the same. In more detail, the present invention includes a power unit for power supply and an optical unit for communication, and transmits sufficient power to the receiver even when a voltage drop occurs due to long-distance transmission, while minimizing the outer diameter so that pneumatic installation is possible in a small microduct. And a photoelectric composite cable capable of simultaneously providing high-speed communication, and an photoelectric composite system having the same.

Recently, small cell-based base stations, high-definition CCTV, and various equipment for smart city construction are rapidly spreading. Such photoelectric composite load devices have a rapid increase in communication capacity and require large-capacity high-speed communication and power supply accordingly. To this end, in recent years, communication lines for communication of these devices have been replaced by optical lines.

In order to provide high-capacity high-speed communication and power to such photoelectric composite load devices, a method of connecting an optical cable and a separate power cable to each device may be considered. However, connecting each optical cable and power cable increases the cost and complicates the system configuration.

A method of providing communication and power by connecting a photoelectric composite cable to such a photoelectric composite loader can be considered, but the conventional photoelectric composite cable that supplies both optical communication and power at the same time uses a large-capacity photoelectric composite cable having a large outer diameter and a heavy weight. It is difficult to apply the laying method such as air blowing, which was used as a method of laying photoelectric composite cables in units of hundreds of meters or kilometers.

In order to install the photoelectric composite cable by air-blowing method, the outer diameter must be minimized, but sufficient conductor diameter is required to prevent voltage drop due to the increase in the length of the installation. It is also not easy to apply the old photoelectric composite cable.

The present invention includes a power unit for power supply and an optical unit for communication, and transmits sufficient power to the receiver even when a voltage drop occurs due to long-distance transmission, while minimizing the outer diameter so that pneumatic installation in a small microduct is possible, and power and high-speed communication It is an object to be solved to provide a photoelectric composite cable that can be simultaneously provided and a photoelectric composite system having the same.

In order to solve the above problem, at least one pair of power units configured by covering a conductor with an insulator; At least one optical unit including at least one optical fiber and configured in a loose tube manner; A photoelectric composite cable including a; cable jacket surrounding the power unit and the outer side of the optical unit may be provided.

In addition, the photoelectric composite cable may have an outer diameter of 6.5 mm or less.

In addition, the photoelectric composite cable may be capable of air blowing.

Here, the outer diameter of the photoelectric composite cable may be 0.65 to 0.85 times the inner diameter of the microduct.

In this case, the optical fiber drop ratio in the loose tube constituting the optical unit may be 50% or less.

In addition, a central tension line may be provided in the center of the photoelectric composite cable.

In addition, two pairs of power units may be provided, and a pair of optical units may be provided, and each of the power units and the optical units may be disposed to face each other with the center tension line therebetween.

In addition, the photoelectric composite cable may include at least one intervening unit.

In addition, the conductor area of one power unit among the pair of power units may be 1.0 mm2 to 1.7 mm2.

Here, the thickness of the insulator of the power unit may be 0.20 mm to 0.24 mm.

In this case, the outer diameter of the optical unit may be 1.6 mm to 2.0 mm.

In addition, the length of the microduct in which the photoelectric composite cable is installed may be 2,000 meters or less, and power transmitted to the pair of power units may be 720 watts or less.

In addition, the intervening unit may be made of tensile reinforcing fiber, fiber reinforced plastic (FRP) or polyethylene (PE).

In addition, the central tension line may be a tensile reinforcing fiber, an FRP material, or a polyethylene (PE) material.

In addition, the intervening unit or the central tension line may be smaller than the outer diameter of the optical unit or the power unit.

In addition, in order to solve the above problems, the present invention is a microduct having a length of 2,000 meters or less and an inner diameter of 9 millimeters or less; The photoelectric composite cable according to any one of claims 1 to 17 installed in the microduct by a pneumatic installation method; A first terminal unit for connecting an AC power network and a network communication network to one end of the photoelectric composite cable; It is possible to provide a photoelectric composite system including a second terminal unit for connecting at least one photoelectric composite loader to the other end of the photoelectric composite cable.

In addition, the first terminal unit may include a DC converter for converting AC power provided from a power cable connected to a power grid into DC power.

In addition, the first terminal unit may include an optical connection part for connecting an optical cable connected to a network communication network and an optical unit of the photoelectric composite cable.

Here, the second terminal unit may include a static voltage booster for boosting or stabilizing DC power supplied through the power unit of the photoelectric composite cable.

In this case, the static voltage and each photoelectric composite loader of the second terminal unit may be connected to a power cable branched from the static voltage.

In addition, the second terminal unit may include a branch adapter for branching the optical unit of the photoelectric composite cable into a plurality of optical units.

Further, the branch adapter of the second terminal unit and each of the photoelectric composite loaders may be respectively connected to optical cables branched from the branch adapter.

In addition, the second terminal unit and each of the photoelectric composite loaders may be connected by respective photoelectric composite jumper cables comprising a power unit and an optical unit connected to a voltage regulator and a branch adapter of the second terminal unit.

In addition, the second terminal unit may further include a third terminal portion collecting the power unit and the optical unit connected to the voltage regulator and the branch adapter of the second terminal unit and branching into a plurality of jumper cables.

Advantageous Effects of Invention According to the present invention, it is possible to provide a photoelectric composite cable capable of high-speed communication with power and a large capacity and capable of air blowing, and a photoelectric composite system having the same.

Further, according to the present invention, power and large-capacity high-speed communication are possible for various photoelectric composite loaders, and stable power can be supplied according to the required voltage of the load device.

In addition, according to the present invention, it is possible to provide various options for a connection method between the second terminal unit providing power and communication to the photoelectric composite load device and each photoelectric composite load device.

In addition, according to the present invention, the first terminal unit that connects the AC power network, the network communication network and the photoelectric composite cable is provided with a battery in addition to a DC converter to provide a UPS function capable of supplying power to the photoelectric composite loader even in the event of a power failure. I can.

1 is a cross-sectional view of one embodiment of the photoelectric composite cable according to the present invention, and Figure 2 is a configuration diagram of another embodiment of the photoelectric composite cable according to the present invention.
3 shows a configuration diagram of an embodiment of a photoelectric composite system including a photoelectric composite cable according to the present invention.
4 is a block diagram of another embodiment of a photoelectric composite system including the photoelectric composite cable according to the present invention.
5 and 6 are diagrams showing the configuration of another embodiment of a photoelectric composite system including an photoelectric composite cable according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed content may be thorough and complete, and the spirit of the present invention may be sufficiently conveyed to those skilled in the art. The same reference numbers throughout the specification denote the same elements.

1 is a cross-sectional view of one embodiment of a photoelectric composite cable 100 according to the present invention, and FIG. 2 shows a configuration diagram of another embodiment of a photoelectric composite cable 100 according to the present invention.

The embodiment shown in FIG. 1 includes a power unit 30 for supplying power and an optical unit 10 for communication, the outer diameter is minimized to enable air blowing on a small microduct, and power and high-speed communication are simultaneously performed. It relates to a photoelectric composite cable 100 that can be provided and a photoelectric composite system 1 having the same.

To this end, the present invention comprises at least one pair of power units 30 configured by covering a conductor 31 with an insulator 33; At least one optical unit 10 comprising at least one optical fiber 11 and configured in a loose tube 13 manner; The power unit 30 and a cable jacket 90 surrounding the outer side of the optical unit 10 may provide a photoelectric composite cable 100 including a.

The power unit 30 of the embodiment shown in FIG. 1 may be provided with two pairs for DC power supply, and the area of the conductor 31 of one power unit 30 among the pair of power units 30 is a conductor ( 31) The area may be 1.0 mm2 to 1.7 mm2 or the outer diameter (d1-2*t) of the conductor 31 of the power unit 30 may be about 15 AWG to about 17 AWG, and in this case, the thickness of the insulator 33 ( t) may be composed of about 0.20 millimeters (mm) to 0.24 millimeters (mm) to satisfy IEC60227 and IEC60228 standards.

The conductor 31 of the power unit 30 shown in FIG. 1 is shown as a stranded conductor composed of a plurality of wires made of copper or aluminum alloy, but may be composed of a single conductor, and the insulator 33 is polyethylene (PE). ) Or polyvinyl chloride (PVC).

The photoelectric composite cable 100 according to the present invention may include at least one optical unit 10 for providing a communication function.

The optical unit 10 may include at least one optical fiber 11 therein. In general, the optical unit 10 may be a tight buffer method and a loose tube 13 method in which no empty space exists, and the optical unit 10 of the photoelectric composite cable 100 according to an embodiment of the present invention As shown in FIGS. 1 and 2, since a plurality of optical fibers 11 are accommodated in one optical unit 10, the loose tube 13 method may be applied.

The optical unit 10 of the photoelectric composite cable shown in FIGS. 1 and 2 can accommodate up to 24 optical fibers 11 in the loose tube 13, and a waterproof member in addition to the optical fiber 11 in the loose tube 13 Can be accommodated. The loose tube 13 may be made of polybutylene terephthalate or polypropylene, and as an example of a waterproof member that may be provided in the loose tube 13, thixotropic compound jelly ), waterproof yarn, and waterproof powder.

It is preferable that the optical fiber 11 dot ratio in the loose tube 13 constituting the optical unit 10 is 50% or less.

The outer diameter d2 of the optical unit 10 may be 1.6 millimeters (mm) to 2.0 millimeters (mm).

In the embodiment shown in Figure 1, the power unit 30 is provided with two pairs for DC power supply, the optical unit 10 for providing optical communication is provided with one, but the tensile strength of the photoelectric composite cable 100 In order to reinforce or maintain the circular shape of the cable, an intervening unit 50 or a center tension line may be additionally provided.

The intervening unit 50 or the central tension line may have an outer diameter corresponding to an outer diameter of the optical unit 10 or the power unit 30 or may be configured to be small.

In addition, each of the optical unit 10, the power unit 30, and the intervening unit 50 may be configured such that the outer diameter of the cable is minimized by circumscribed to at least two units.

The intervening unit 50 may be made of any one of a tensile reinforcing fiber, an FRP material, or a polyethylene (PE) material.

The fiber-reinforced plastic (FRP) is manufactured by coating glass fiber with a base resin such as epoxy resin, urethane resin, and ester resin, and has a Mohs hardness of 5.0 or more and a flexural modulus of 4500kgf/mm2 The above and flexural strength is expected to be able to secure a property value of 90kgf/mm2 or more.

In addition, a cable jacket 90 surrounding the optical unit 10, the power unit 30 and the intervening unit 50 may be provided, and a waterproof yarn 70, etc. may be provided inside the cable jacket 90. Although not shown, various taping layers may be further provided inside the cable jacket 90 to provide a binding or waterproof function.

The cable jacket 90 may be made of PVC, PE, or LSZH material to stably protect the photoelectric composite cable and provide sufficient durability.

In the embodiment shown in FIG. 2, unlike the embodiment shown in FIG. 1, a pair of optical units 10 may be provided.

In the embodiment shown in FIG. 2, two pairs of power units 30 and one pair of optical units 10 are provided around the central tension line 60 to minimize the internal empty space of the photoelectric composite cable, and the cross section is 1 +6 structure.

When the outer diameters of the two pairs of power units 30 and one pair of optical units 10 are configured to have corresponding sizes, the central tension line 60 may be arranged to circumscribe the six units. There may be some variation, and the degree of circularity of each unit is different. Therefore, the central tension line 60 has a 1+6 structure that minimizes the outer diameter of the photoelectric composite cable 100 when externally contacting at least three units of the optical unit 10 and the power unit 30. It was confirmed that the photoelectric composite cable 100 can be configured.

The optical unit 10 is shown to be provided with one pair (two), but the optical unit 10 may be unified and one optical unit 10 may be replaced with an intervening unit 50. In the embodiment shown in FIG. 2, unlike the embodiment shown in FIG. 1, the number of optical fibers 11 provided in each optical unit 10 is shown as six, but the number of optical fibers 11 can be increased or decreased.

Here, as described above, the outer diameter d2 of the optical unit 10 including six optical fibers 11 may be configured to be about 1.6 millimeters (mm) to 2.0 millimeters (mm).

In the embodiment shown in FIG. 2, since two pairs (four) of power units 30 are also provided for DC power supply, each pair of power units 30 may be configured as a + pole or a negative pole unit. .

The power unit 30 is provided with two pairs, the optical unit 10 is provided with a pair, each of the power unit 30 and the optical unit 10 is provided with the central tension line 60 between It is arranged facing each other so that the cross-sectional shape of the photoelectric composite cable 100 is close to a circular shape in spite of variations in outer diameters between units.

The power unit 30 of the embodiment shown in FIG. 2 is configured for DC power supply, but is divided into four, so the sum of the areas of the conductors 31 of each pair of power units 30 is 2.0 square millimeters ( ㎟) to 3.4 square millimeters (㎟), in this case, the outer diameter (d1-2 * t) of the conductor 31 of each power unit 30 may be 15 AWG to 17 AWG, even in this case The thickness t of the insulator 33 constituting each power unit 30 may be similarly configured to be about 0.20 millimeters (mm) to 0.24 millimeters (mm).

Such a photoelectric composite cable 100 has an outer diameter of 6.5 mm (mm) or less to enable air blowing in a microduct (200, see Fig. 3 or less) having an inner diameter or a width of the installation space of 9 mm (mm) or less. It is desirable to be configured. In this case, it is preferable that the outer diameter of the photoelectric composite cable 100 satisfies about 0.65 to 0.85 times the inner diameter of the microduct 200.

The length of the microduct 200, that is, the laying length, may be about 2,000 meters or less, taking into account the DC voltage drop in the power unit 30, etc., and the conductor diameter of the power unit so that the photoelectric composite cable can be pneumatically laid. In consideration, the power supplied through the pair of power units is preferably 720W or less.

For example, considering the diameter of the conductor, the voltage drop based on the installation length of 2000m may be about 60V, and if the input voltage of the load device is assumed to be 48V, the output voltage of the transmitter is 108V. In this case, the power consumption of the load device is about Assuming 50W, the current consumption is 1.1A at that time, and if there are up to 12 loads that supply power with one photoelectric composite cable, the output power of the transmitter is calculated as 108V x 1.1A x 12 = 1425.6W. , Since there are 2 pairs of power units, the power transmitted by a pair of power units is calculated to be about 712.8W, so to stably supply power to 12 loads and to enable pneumatic installation, the power supplied through the pair of power units should be less than 720W. It is desirable to be.

In summary, the photoelectric composite cable 100 shown in FIGS. 1 and 2 assumes that the installation length through pneumatic installation on the microduct 200 is usually 2000 meters (m) or less, and the maximum supply power at this time is In the case of 720W, as described above, the cross-sectional area of the conductors 31 of a pair or two pairs of power units 30 should satisfy about 1.0 square millimeter (mm2) to 1.7 square millimeter (mm2), and each It is the same that the thickness (t) of the insulator 33 of the power unit 30 may be 0.2 to 0.24 mm (mm) in consideration of stability.

In this case, the outer diameter of the conductor 31 of the power unit 30 of each of the embodiments shown in FIGS. 1 and 2 may be composed of about 15 AWG to about 17 AWG.

In addition, the embodiment shown in FIGS. 1 and 2 is a photoelectric composite so that air blowing is possible in the microduct 200 having a width of 12 mm (mm) or less, which is mainly used while having such a power supply condition. As described above, it is preferable that the total outer diameter (D) of the cable 100 satisfies 6.5 millimeters (mm) or less.

3 shows a configuration diagram of an embodiment of an photoelectric composite system 1 comprising the photoelectric composite cable 100 according to the present invention.

In the present invention, a small base station of a small cell concept, a high-definition CCTV, and various photoelectric complex loaders for building a smart city are rapidly spreading. Such equipment is a photoelectric hybrid system (1) capable of providing communication and power from the network communication network 500 and the AC power network 400 at a time when high-speed communication and power supply are required due to a rapid increase in communication capacity. Can provide.

Specifically, the present invention is a length of 2,000 meters (m) or less, a width of 12 millimeters (mm) or less microduct 200; The photoelectric composite cable 100 described above in an air-blowing method in the microduct 200; A first terminal unit 300 for connecting an AC power network 400 and a network communication network 500 to one end of the photoelectric composite cable 100; A photoelectric composite system 1 including a second terminal unit 600 for connecting at least one photoelectric composite loader to the other end of the photoelectric composite cable 100 may be provided.

The photoelectric composite system 1 of the present invention is a power and communication system in which the aforementioned photoelectric composite cable 100 is installed in an air-blowing method in a micro duct having a width of 12 mm (mm) or less and a length of 2,000 meters (m) or less. Can provide.

The photoelectric composite cable 100 of the present invention is a single cable that can be installed by an air-blowing method, and the photoelectric composite system 1 of the present invention comprises a network communication network 500 and an AC power network 400 of the present invention. A first terminal unit 300 for connection to 100) and a second terminal unit 600 for connecting the photoelectric composite cable 100 of the present invention and each of the photoelectric composite load devices 700 and 800 may be provided. have.

The first terminal unit 300 is connected to an AC power grid 400 and a power cable 450, and includes a DC converter 310 for converting AC power provided from the power grid to DC power, and a server or a user terminal. It may include an optical connection unit 360 connected to the communication network 500 and the optical cable 550.

The DC converter 310 and the optical connector 360 may be connected to a power unit and an optical unit of the photoelectric composite cable 100 of the present invention, respectively.

Further, the power unit and the optical unit of the photoelectric composite cable 100 of the present invention may be directly connected to the DC converter 310 and the optical connection unit 360 of the first terminal unit 300, but the first The terminal unit 300 may further include a first terminal unit 340 to which the power unit 30 and the optical unit 10 of the photoelectric composite cable 100 are connected.

As shown in FIG. 3, the DC converter 310 connected to the AC power network 400 of the first terminal unit 300 by a power cable and the optical connection unit 360 connected to the network communication network 500 by an optical cable The first terminal unit 340 is connected to each of the connecting power unit 30 ′ and the connecting optical unit 10 ′, and the photoelectric composite cable 100 of the present invention is connected to the first terminal unit 340. Alternatively, the power unit 30 and the optical unit 10 of the photoelectric composite cable 100 of the present invention are directly connected to the DC converter 310 and the optical connection part 360 of the first terminal unit 300 Can also be applied.

The photoelectric composite cable 100 of the present invention having one end connected to the first terminal unit 340 is laid in the microduct 200 in an air-blowing method, and the other end may be connected to the second terminal unit 600. Likewise, the power unit 30 and the optical unit 10 of the photoelectric composite cable 100 may be connected via the second terminal unit 640 of the second terminal unit 600.

The second terminal unit 600 includes a voltage regulator 610 for boosting or stabilizing DC power supplied through the power unit 30 to the photoelectric composite cable 100 and the second terminal unit 600 A branch adapter 660 for branching the optical unit 10 of the composite cable 100 into a plurality of optical units 10 may be further provided.

In addition, each of the photoelectric composite load devices 700 and 800 may be connected to a voltage regulator 610 and a branch adapter 660 constituting the second terminal unit 600 to provide power and data communication.

Similarly, as shown in Fig. 3, the second terminal unit 640, the voltage regulator 610, and the branch adapter 660 may be connected by a connection power unit 30', a connection optical unit 10', etc. , The second adapter portion may be omitted, and the power unit 30 and the optical unit 10 may be branched from the photoelectric composite cable 100 to be directly connected to the voltage regulator 610 and the branch adapter 660.

A method of connecting each of the photoelectric composite load devices 700 and 800 to the voltage regulator 610 and the branch adapter 660 constituting the second terminal unit 600 will be described.

It is assumed that a photoelectric composite loader such as a CCTV, a small base station, or a wireless router is required to provide power and a communication line, and is provided with a photoelectric conversion module by itself or is connected via a photoelectric conversion adapter, not shown.

In the embodiment shown in FIG. 3, the voltage regulator 610 and the branch adapter 660 and each of the photoelectric composite loads constituting the second terminal unit 600 include a power cable 620 and an optical cable 670, respectively. Connection method can be applied.

In this case, the voltage regulator 610 and the branch adapter 660 constituting the second terminal unit 600 may provide power and optical communication branch functions, respectively.

4 is a block diagram of another embodiment of the photoelectric composite system 1 including the photoelectric composite cable 100 according to the present invention. A description that is duplicated with the description with reference to FIG. 3 will be omitted.

In the embodiment with reference to FIG. 3, each of the photoelectric composite load devices 700 and 800 is connected to a voltage regulator 610 and a branch adapter 660 constituting the second terminal unit 600 by a power cable and an optical cable, respectively. 4, the second terminal unit 600 and each of the photoelectric composite load devices 700 to unify the cable connecting the photoelectric composite load devices 700 and 800 and the second terminal unit 600 , 800) has a feature of connecting individual photoelectric composite jumper cables 100a and 100b.

To this end, the second terminal unit 600 collects a connection power unit 30 ′ and a connection optical unit 10 ′ connected to the voltage regulator 610 and the branch adapter 660 of the second terminal unit 600 Thus, it may include a third terminal unit 690 branching into a plurality of photoelectric composite jumper cables 100a and 100b.

The photoelectric composite jumper cables 100a and 100b are also photoelectric composite cables, and a connection optical unit 10 ′ and a connection power unit 30 connected to the voltage regulator 610 and the branch adapter 660 from the third terminal unit 690 ') is connected and then branched into a plurality of photoelectric composite jumper cables 100a and 100b to be connected to respective photoelectric composite load devices 700 and 800 to provide optical communication and power.

5 and 6 show the configuration of another embodiment of the photoelectric composite system 1 including the photoelectric composite cable 100 according to the present invention. Duplicate description will be omitted.

The embodiment shown in FIGS. 5 and 6 is the same as the embodiment shown in FIGS. 3 and 4 and the overall structure, but in addition to the DC converter 310 in the first terminal unit 300, the battery 313 and the step-up converter ( 315) may be further provided.

That is, unlike the above-described embodiment, in the embodiments shown in FIGS. 5 and 6, the power converted from DC by the DC converter 310 is provided to the photoelectric composite load devices 700 and 800 through the photoelectric composite cable 100. Alternatively, the DC converted power by the DC converter 310 may be applied to a method of charging the battery 313 and boosting the charged battery power by the boost converter 315 to provide the photoelectric composite cable 100.

By adopting such a structure, it is possible to provide a UPS function capable of responding to a power outage for a certain period of time, and to compensate for the voltage drop according to the length of the installation, thereby enabling stable power supply.

Although it has been described with reference to the preferred embodiments of the present invention, those skilled in the art can variously modify and change the present invention within the scope not departing from the spirit and scope of the present invention described in the following claims. There will be. Therefore, if the modified implementation basically includes the elements of the claims of the present invention, all should be considered to be included in the technical scope of the present invention.

1: photoelectric complex system
10: light unit
30: power unit
100: photoelectric composite cable
200: microduct

Claims (24)

At least one pair of power units comprising a conductor covered with an insulator;
At least one optical unit including at least one optical fiber and configured in a loose tube manner;
Photoelectric composite cable comprising a; cable jacket surrounding the power unit and the outer side of the optical unit. The method of claim 1,
The photoelectric composite cable having an outer diameter of 6.5 mm or less of the photoelectric composite cable. The method of claim 1,
The photoelectric composite cable is a photoelectric composite cable, characterized in that air blowing is possible in the microduct. The method of claim 3,
The photoelectric composite cable, characterized in that the outer diameter of the photoelectric composite cable is 0.65 to 0.85 times the inner diameter of the microduct. The method of claim 1,
Optical fiber composite cable, characterized in that the optical fiber dot ratio in the loose tube constituting the optical unit is 50% or less. The method of claim 1,
A photoelectric composite cable, characterized in that a central tension line is provided in the center of the photoelectric composite cable. The method of claim 6,
The power unit is provided with two pairs, the optical unit is provided with a pair, each of the power unit and the optical unit is a photoelectric composite cable, characterized in that arranged to face each other with the center tension line therebetween. The method of claim 1,
The photoelectric composite cable, characterized in that it comprises at least one intervening unit. The method of claim 1,
A photoelectric composite cable, characterized in that the conductor area of one power unit among a pair of power units is 1.0 mm2 to 1.7 mm2. The method of claim 9,
The photoelectric composite cable, characterized in that the thickness of the insulator of the power unit is 0.20 mm to 0.24 mm. The method of claim 1,
The photoelectric composite cable, characterized in that the outer diameter of the optical unit is 1.6 mm to 2.0 mm. The method according to claim 1 or 2,
The length of the microduct on which the photoelectric composite cable is installed is 2,000 meters or less, and the power transmitted to the pair of power units is 720 watts or less. The method of claim 8,
The intervening unit is a photoelectric composite cable, characterized in that the tensile reinforced fiber, fiber reinforced plastic (FRP) or polyethylene (PE) material. The method of claim 6,
The central tension wire is a photoelectric composite cable, characterized in that the tensile reinforcing fiber, FRP material or polyethylene (PE) material. The method of claim 13 or 14,
The photoelectric composite cable, wherein the intervening unit or the central tension line is smaller than an outer diameter of the optical unit or the power unit. Microducts with a length of 2,000 meters or less and an inner diameter of 9 millimeters or less;
The photoelectric composite cable according to any one of claims 1 to 17 installed in the microduct by a pneumatic installation method;
A first terminal unit for connecting an AC power network and a network communication network to one end of the photoelectric composite cable;
And a second terminal unit for connecting at least one photoelectric composite loader to the other end of the photoelectric composite cable. The method of claim 16,
The first terminal unit comprises a DC converter for converting AC power provided from a power cable connected to a power grid into DC power. The method of claim 16,
Wherein the first terminal unit comprises an optical connection part for connecting an optical cable connected to a network communication network and an optical unit of the photoelectric composite cable. The method of claim 16,
And the second terminal unit comprises a static voltage device for boosting or stabilizing DC power supplied through the power unit of the photoelectric composite cable. The method of claim 19,
The photoelectric composite system, characterized in that the positive voltage and each photoelectric composite loader of the second terminal unit are respectively connected to a power cable branched from the positive voltage. The method of claim 19,
Wherein the second terminal unit comprises a branch adapter for branching the optical unit of the photoelectric composite cable into a plurality of optical units. The method of claim 19 and 21,
The branch adapter of the second terminal unit and each of the photoelectric composite loaders are connected to an optical cable branched from the branch adapter. The method of claim 21,
The second terminal unit and each of the photoelectric composite loaders are connected to each of the photoelectric composite jumper cables comprising a power unit and an optical unit connected to a voltage regulator and a branch adapter of the second terminal unit. The method of claim 23,
The second terminal unit further comprises a third terminal unit collecting the power unit and the optical unit connected to the voltage regulator and the branch adapter of the second terminal unit and branching into a plurality of the jumper cables.

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