Photovoltaic (PV) cable support system
Preinstallable hangers with flexible materials and varying loop sizes for solar farms address the inefficiencies of traditional hangers, enabling faster and cheaper deployment of cable support systems.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2026-03-05
AI Technical Summary
The installation of traditional metallic hangers for suspending trunk buses in solar farms is time-consuming and costly due to on-site manual installation, which is necessary because these hangers are typically rigid and require individual placement.
A cable support system with preinstallable hangers made of flexible material, featuring differently sized suspension loops, allowing for hangers to be shipped with messenger wires and trunk lines on a reel, facilitating easy deployment and reducing labor requirements.
Enables quick and cost-effective installation of solar cable support systems by allowing hangers to be preinstalled, thereby reducing time and labor costs associated with traditional on-site installation methods.
Smart Images

Figure CN2024115803_05032026_PF_FP_ABST
Abstract
Description
PHOTOVOLTAIC (PV) CABLE SUPPORT SYSTEMBACKGROUND
[0001] Large utility-scale solar farms often have multiple arrays of photovoltaic (PV) panels that are electrically connected using branch cables that feed direct current (DC) power from the arrays of PV panels into a larger cable, called a trunk bus. The trunk bus, in turn, carries the DC power to an inverter, which converts the DC power into alternating current (AC) power that can be provided to an electrical grid and distributed to consumers.
[0002] Electrical cables, such as the trunk bus, are typically suspended above the ground to avoid flooding or other hazards that may arise from laying the cables directly on the ground. Cables are typically suspended from a separate cable, called a messenger wire, using metallic hangers.
[0003] BRIEF SUMMARY
[0004] Embodiments described herein provide a unique solar cable hanger design that can facilitate the preinstallation of hangers in a photovoltaic (PV) cable support system. Hangers may comprise a plurality of suspension loop sets comprising at least a respective first suspension loop and a respective second suspension loop having a larger circumference than the respective first loop. Suspension loops of the hangers may be openable to allow for trunk lines (and / or other cables) to be added or removed from the loops. Further, hangers may be preinstalled with a messenger wire at respective suspension locations along the messenger wire. According to some embodiments, a jacket or cover on the messenger wire or a separate spacing cord accompanying the messenger wire may include apertures through which suspension loops may extend to help secure hangers to respective suspension locations along the messenger wire. According to some embodiments, hangers may be preinstalled on the messenger wire, and one or more trunk lines may extend through each of the suspension loops of the hangers, and the messenger wire (with hangers) and one or more trunk lines may be wrapped around a reel for shipping to a solar farm site for deployment. Various other features and embodiments are described herein.
[0005] According to this disclosure, an example cable support system for solar cables may comprise a messenger wire and a plurality of hangers. Each hanger of the plurality of hangers may be located at a respective suspension location along the messenger wire and may comprise a respective first suspension loop, and a respective second suspension loop having a larger circumference than the respective first suspension loop. The cable support system may further comprise first trunk line extending through the respective first suspension loop and the respective second suspension loop of each hanger of the plurality of hangers, and a second trunk line extending through the respective second suspension loop of each hanger of the plurality of hangers.
[0006] According to this disclosure, an example method of manufacturing or deploying a cable support system for solar cables may comprise securing a plurality of hangers along a messenger wire such that, when the cable support system is deployed, each hanger of the plurality of hangers is located at a respective suspension location along the messenger wire, each hanger of the plurality of hangers comprising a respective first suspension loop, and a respective second suspension loop having a larger circumference than the respective first suspension loop. The method further comprises extending a first trunk line through the respective first suspension loop and the respective second suspension loop of each hanger of the plurality of hangers, and extending a second trunk line through the respective second suspension loop of each hanger of the plurality of hangers.
[0007] According to this disclosure, an example solar cable hanger may comprise: a first suspension loop and a second suspension loop having a larger circumference than the first suspension loop. The circumference of the second suspension loop may be sufficiently larger than the circumference of the first suspension loop such that, when the hanger is installed at a suspension location along a messenger wire of a cable support system, at least a threshold spacing exists between (i) a first trunk line that extends through the first suspension loop and the second suspension loop, and (ii) a second trunk line extending through the second suspension loop, when the cable support system is deployed.
[0008] This summary is neither intended to identify key or essential features of the claimed subject matter nor is it intended to be used in isolation to determine the scope of the claimed subject matter. The subject matter should be understood by reference to appropriate portions of the entire specification of this disclosure, any or all drawings, and each claim. The foregoing, together with other features and examples, will be described in more detail below in the following specification, claims, and accompanying drawings.BRIEF DESCRIPTION OF THE DRAWINGS
[0009] FIG. 1 is a diagram of an example photovoltaic (PV) array system, according to an embodiment.
[0010] FIG. 2 is a perspective view drawing of a portion of an example PV array system utilizing traditional hangers.
[0011] FIG. 3 is a perspective view drawing, similar to FIG. 2, illustrating a PV cable support system, according to an embodiment.
[0012] FIG. 4A is a simplified illustration of an example manufacturing process by which hangers may be preinstalled in a PV cable support system, such as the PV cable support system of FIG. 3.
[0013] FIG. 4B is a simplified illustration of an example process by which hangers may be installed in a PV cable support system, such as the PV cable support system of FIG. 3, during deployment.
[0014] FIGS. 5A and 5B are side-view drawings of PV cable support systems, illustrating respective first and second embodiments for securing hangers at certain locations along a messenger wire.
[0015] FIGS. 6A and 6B are drawings of example configurations by which suspension loop ends may be secured together.
[0016] FIG. 7 is a flow diagram of a method of manufacturing a cable support system for solar cables, according to an embodiment.
[0017] Like reference symbols in the various drawings indicate like elements, in accordance with certain example implementations. In addition, multiple instances of an element may be indicated by following a first number for the element with a letter or a hyphen and a second number. For example, multiple instances of an element 110 may be indicated as 110-1, 110-2, 110-3 etc., or as 110a, 110b, 110c, etc. When referring to such an element using only the first number, any instance of the element is to be understood (e.g., element 110 in the previous example would refer to elements 110-1, 110-2, and 110-3 or to elements 110a, 110b, and 110c) . Drawings are simplified for discussion purposes and may not reflect certain features of embodiments (e.g., sizes / dimensions, components, etc. ) used in real-world applications.DETAILED DESCRIPTION
[0018] The following description is directed to certain implementations to describe innovative aspects of various embodiments. However, a person having ordinary skill in the art will readily recognize that the teachings herein can be applied in a multitude of different ways. The described implementations may be implemented in various contexts, including construction sites that do not involve solar construction, as well as other industrial, commercial, military, or residential use cases, to name only a few.
[0019] It will be apparent to those skilled in the art that substantial variations may be made in accordance with specific requirements. For example, although specific materials, elements, configurations, and / or other aspects of the embodiments described herein may be described, a person of ordinary skill in the art will appreciate that alternative materials, elements, etc. may be used. Such variations from the embodiments described herein may be based on a variety of factors, including worksite requirements, budgetary requirements, manufacturing limitations, or the like.
[0020] Solar farms with multiple arrays of photovoltaic (PV) panels often use trunk buses to relay power from the PV arrays to an inverter box. To avoid water and other hazards that may arise from laying trunk buses on the ground, the lines of a trunk bus are typically suspended above the ground using metallic solar cable hangers (also referred to herein simply as “hangers” ) that hang from a cable, called a messenger wire. Problematically, however, the hangers are installed onto the messenger wire on-site, which can significantly increase the time and cost of installing a solar farm.
[0021] Embodiments described herein provide a cable support system with solar cable hangers that may be preinstalled for deployment (e.g., on a reel) with the messenger wire and potentially one or more trunk lines and / or other cables (which may be referred to herein generically as “solar cables” ) . To allow this, hangers may be made of a relatively flexible or bendable material. Further, hangers may comprise sets of suspension loops through which trunk lines are threaded, where suspension loops can be differently sized to allow spacing between trunk lines. By enabling hangers to be preinstalled with messenger wire and one or more trunk lines in this manner, embodiments can enable quick deployment and reduce the amount of labor required to install trunk buses, ultimately saving time and money. These and other benefits will be apparent to a person of ordinary skill in the art in view of the embodiments described herein below.
[0022] FIG. 1 is a diagram of an example PV array system 100, according to an embodiment. The PV array system 100 comprises a plurality of PV arrays 110, each comprising an array of PV panels 115. (To avoid clutter, only a portion of the PV arrays 110 and PV panels 115 are labeled in FIG. 1. ) Each PV array 110 may have branch cables 120 that collect power generated by the PV panels 115 of the PV array 110 and deliver it to the trunk bus 130. The trunk bus 130 then provides power generated by all PV arrays 110 to an inverter box 140.
[0023] As with other figures provided herein, FIG. 1 is provided as a nonlimiting example. A person of ordinary skill in the art will appreciate that FIG. 1 has been simplified for purposes of illustration. It can further be noted that branch cables 120 from each PV array 110 may include both positive and negative cables. The trunk bus 130 may also include positive and negative cables. As described herein, a “trunk bus” may comprise both positive and negative cables. Individual cables of a trunk bus may be referred to herein as a “trunk cable” or “trunk line. ” A “trunk line pair” may refer to the positive and negative cables of a trunk bus.
[0024] As noted, hangers are used to suspend solar cables above ground to protect the cables and other components of a solar farm from damage that could occur due to flooding or other hazards. Moreover, a certain amount of clearance above the ground (typically a foot or more) may be required under applicable regulations and / or safety codes. Because a trunk bus carries electricity generated from a plurality of PV arrays, it usually comprises large conductive metal cables (e.g., copper or aluminum) and, therefore, can be quite heavy. Suspending the trunk bus and / or other solar cables with multiple hangers periodically spaced along the messenger wire (e.g., every few feet) can help distribute the weight and prevent the trunk bus from sagging. FIG. 2, described below, provides additional details regarding how hangers are used.
[0025] FIG. 2 is a perspective view of a portion of an example PV array system (e.g., PV array system 100 as described above with respect to FIG. 1) utilizing traditional hangers 210. In this example, the underside of a PV array 215 of a larger PV array system is illustrated, in which the PV array 215 is supported above the ground by a central PV array support 220 and a branch PV array support 225. A PV array support beam 230, to which the PV panels of the PV array 215 are secured, extends between the central PV array support 220 and branch PV array support 225. (According to some embodiments, the beam may extend to the other side of the central PV array support 220 and may support another PV array. )
[0026] As previously described, branch cables 240 may run along the PV array 215 (e.g., along the PV array support beam 230) and may be electrically connected with the PV panels of the PV array 215, allowing the branch cables 240 to provide power generated by the PV array 215 to the trunk lines 250. In the example shown in FIG. 2, two branch cables 240 (e.g., positive and negative cables) connect with respective trunk lines 250 (e.g., respectively positive and negative) of a trunk bus. Although only one PV array 215 is illustrated in FIG. 2, multiple PV arrays may be electrically connected with the trunk lines 250, as described previously with respect to FIG. 1. Branch cables 240 may be electrically connected with the trunk lines 250 using specialized connectors 260.
[0027] As further illustrated, a messenger wire 270 is used to suspend the trunk lines 250 above the ground via the hangers 210. The messenger wire 270 is typically made of a strong, durable material, such as steel or aluminum, and is anchored securely on either end to a support structure. As illustrated in FIG. 2, messenger wire supports 280 may also be used at various locations along the length of the messenger wire 270 to provide additional support. Messenger wire supports 280 may be located on a central PV array support 220, as illustrated, and / or on separate structures.
[0028] Hangers 210 may come in different shapes and sizes, depending on the desired functionality. The hangers 210 in FIG. 2 have a two-loop design, but other hanger types may have a single loop, three loops, etc. Trunk lines 250 may be fed through either loop 290. In the example of FIG. 2, a pair of trunk lines 250 (e.g., positive and negative) are run through the same loop, leaving another loop open for other cables / trunk lines. Alternatively, each trunk line may be run through a separate loop 290. The use of loops 290 in this matter can help keep cable separate, which can help with cable management and heat dissipation.
[0029] These types of traditional hangers, however, have their limitations. For example, in order to maintain loops 290, hangers are often made of a rigid material, such as a heavy-gauge wire coated with a weatherproof, UV-resistant material, such as PVC or another plastic. This can require manual installation on site, which can increase the installation time of a solar farm as well as cost.
[0030] Embodiments described herein address these and other shortcomings of traditional hangers by providing a hanger design that can be preinstalled with the messenger wire and trunk bus (es) . More specifically, according to embodiments herein, hangers can be made of a relatively flexible material that can be installed on the messenger wire and / or on an accompanying spacing cord) and shipped on a reel, together with trunk lines, to allow for an easily installable cable support system. According to some embodiments, hangers may comprise suspension loop sets with differently-sized loops to enable spacing between cables or cable pairs / groups. Additional details are provided below.
[0031] FIG. 3 is a perspective view drawing, similar to FIG. 2, illustrating a PV cable support system, according to some embodiments. Similar to FIG. 2, the PV cable support system 300 includes a plurality of hangers 310 that suspend trunk lines 320 from a messenger wire 330. Here, however, the hangers comprise sets of suspension loops 315 that may be made from a relatively flexible material, which can enable the hangers 310 to be preinstalled and shipped on a reel with the messenger wire 330 and trunk lines 320.
[0032] As illustrated, the structure of the hangers 310 in FIG. 3 may differ from the structure of traditional hangers, such as hangers 210 of FIG. 2. As noted, the hangers 310 of the PV cable support system 300 comprise sets of suspension loops having different sizes. The different sizing –or, more specifically, suspension loops having different circumferences –can result in cable spacing 340 that, as noted, can facilitate heat dissipation between trunk lines 320. (It is noted that the term “circumference” as used herein to refer to the enclosing boundary of a curved geometric figure, such as a loop, and not necessarily limited to a circle shape. ) Further, suspension loops may be sized in accordance with the diameter of the trunk lines 320, spacing requirements, and / or other such factors. As an example, given the diameter of the trunk lines 320, the circumference a larger loop may be designed such that it is sufficiently larger than the circumference of a smaller loop such that, when the hanger is installed at a suspension location along a messenger wire of a cable support system, at least a threshold spacing (e.g., cable spacing 340) ) exists between (i) a first trunk line that extends through both the smaller and larger suspension loops, and (ii) a second trunk line extending through the larger suspension loop, when the cable support system is deployed. In some examples, suspension loop circumferences may vary if there are no more than 3 wires. In some examples, when there are more than three wires, cable spacing 340 may be at least 600 mm.
[0033] Although hangers 310 include only two suspension loops each in FIG. 3, embodiments are not so limited. As illustrated by dotted lines in FIG. 3, a hanger 310 may include one or more additional optional extra suspension loops 350. Hangers 310 may include any number of suspension loops (e.g., 2, 3, 4, 5, etc. ) , which may depend on the number of trunk lines 320 used in a PV farm installation, the weight-bearing capacity of the messenger wire 330, and / or other such factors. It can be noted that larger suspension loops result in trunk lines 320 hanging closer to the ground. Thus, ground clearance may also be a limiting factor in the number of suspension loops that may be used. Alternatively, an increase in the number of suspension loops used may result in a requirement that the messenger wire 330 be installed at a correspondingly greater height above the ground. According to some embodiments, a PV cable support system 300 may come with hangers 310 with a certain number of suspension loops preinstalled. Additional suspension loops may be added after installation (e.g., on-site) if additional capacity is needed.
[0034] As noted, hangers 310 may be installed with the messenger wire 330 and / or trunk lines 320. In such embodiments, the inter-hanger spacing 360 may be such that it meets certain standards / requirements set forth by a customer and / or regulatory entity. As previously noted, hangers can be located every few feet (e.g., 3, 4, 5, or 6 feet, or every 0.5, 1, or 2 meters, etc. ) . The inter-hanger spacing 360 may be customizable to a particular site, along with other aspects such as the number of suspension loops per hanger 310, the number of trunk lines 320, the length of the PV cable support system 300, and the like.
[0035] Hangers 310 may be made of different materials, depending on the desired functionality. Generally put, hangers 310 may be made of materials that enable flexibility (e.g., to allow for preinstallation with the messenger wire and trunk bus (es) on a reel for shipping to the customer) , fire retardation (e.g., to meet industry or customer requirements) , weight-carrying capacity, and weather / UV resistance. According to some embodiments, hangers may be made of a polymer, such as nylon or other such fire-retardant material. In some embodiments, threaded polymers may be used to help increase tensile strength and flexibility. Moreover, in some embodiments, hangers 310 may include a metal core (e.g., steel and / or other such metals with sufficient load-bearing capacity) to provide some rigidity to the suspension loop design. As described in further detail below, according to some embodiments, the suspension loops of a hanger 310 may be openable, and rigidity in the suspension loop design can enable the creation of fastening hooks, fastening loops, and / or other structures by which suspension loops may be opened and closed.
[0036] FIG. 4A is a simplified illustration of a manufacturing process 400-A by which hangers 410 may be preinstalled in a PV cable support system, such as the PV cable support system 300 of FIG. 3. Here cables of the PV cable support system, including the messenger wire 420 and trunk lines 430 (or trunk line pairs, if used) are drawn from spools 440 and put on a larger installation reel 450 for installation on site. Arrows depict the direction in which the messenger wire 420 and trunk lines 430 are drawn from the spools 440, and the rotation of the installation reel 450 to show how the messenger wire 420 and trunk lines 430 are wound onto the installation reel 450. By putting these cables on a single installation reel 450, and cutting them to the proper length for a particular PV installation project, installers can save time by making a single “pull, ” laying the messenger wire 420 and trunk lines 430 down at the same time when unspooling the installation reel 450 on-site. For simplicity, single trunk lines 430 are illustrated in FIG. 4A and subsequent figures. However, as previously noted, some embodiments may comprise trunk line pairs to a single suspension loop. Thus, in a variation of the process 400-A illustrated in FIG. 4A, trunk lines 430 may be replaced with trunk line pairs. Other embodiments may additionally or alternatively include hangers with one or more additional suspension loops and, optionally, one or more additional trunk lines 430 and / or trunk line pairs. In some embodiments, some hanger suspension loops may not be preinstalled with a trunk line 430 or trunk line pair. This can provide additional capacity to use the hangers 410 after installation on site to suspend additional types of cables and / or to allow for trunk lines to be added subsequently after installation (e.g., to expand the capacity of the initially installed PV array system) .
[0037] Hangers 410 can be installed approximately as shown, as the messenger wire 420 and trunk lines 430 are being wound onto the installation reel 450. More specifically, hangers 410 may be installed at respective suspension locations 460 along the messenger wire 420. As previously noted, the suspension loops of the hangers may be openable (e.g., having ends that may be secured together and unsecured) and may be opened and attached to the space suspension locations 460 as part of the manufacturing process 400-A. Alternatively, the messenger wire 420 and trunk lines 430 may be threaded through the hangers 410, and the hangers may be attached, one by one, to suspension locations 460 as the messenger wire 420 and trunk lines 430 are spooled onto the installation reel 450.
[0038] FIG. 4B is a simplified illustration of a process 400-B by which hangers 410 may be installed in a PV cable support system, such as the PV cable support system 300 of FIG. 3 during deployment. The process 400-B might be an alternative to the manufacturing process 400-A illustrated in FIG. 4A. More specifically, where the process 400-A illustrates a process by which hangers 410 may be preinstalled on an installation reel 450, the process 400-B illustrates a process by which hangers 410 may be packaged and / or shipped separate from the installation reel 450 and installed during deployment.
[0039] In the process 400-B, which may take place at the installation site, installers make a “pull” by laying the messenger wire 420 and trunk lines 430 down at the same time when unspooling the installation reel 450 on-site. (This can be done, for example, by rolling the installation reel 450 along the ground or rotating the installation reel 450 in the direction shown in FIG. 4B while pulling the trunk lines 430 and messenger wire 420 and / or installation reel 450 away from each other. ) During or after the pull, hangers 410 may be positioned over the messenger wire 420 and trunk lines 430 as shown. The hangers 410 may be preinstalled on a flexible spacing cord 460 at appropriate locations along the spacing cord 460 to ensure that, once the spacing cord 460 is unfurled, the hangers 410 achieve a desirable spacing (e.g., 2-5 m apart) . When initially installed, the hangers 410 may be installed onto the messenger wire 420 and trunk line 430 all at once (while the spacing cord 460 is furled) , as shown by arrow 470. The spacing cord 460 may then be unfurled in the direction shown by arrow 482 ensure the hangers 410 are appropriately spaced at suspension locations along the messenger wire 420. An example illustration of an installed spacing cord 460 is provided in FIG. 5A, which is described in more detail below. Additional details regarding the spacing cord 460 are also provided below.
[0040] The way in which hangers 410 may be secured at different suspension locations 460 along the messenger wire 420 may vary, depending on desired functionality. FIG. 5A and 5B are illustrations of two different ways in which this can be done.
[0041] FIG. 5A is a drawing of a side view of a PV cable support system 500-A, illustrating a first technique for securing hangers 510 at certain locations along the messenger wire 520-A, according to an embodiment. Similar to the PV cable support system 300 depicted in FIG. 3, the embodiment illustrated in FIG. 5A includes a plurality of hangers 510 that suspend trunk lines 530 from the messenger wire 520-A. Alternative embodiments may include or omit various features, including features described above with respect to the previous figures.
[0042] To keep hangers 510 in place at certain positions along the messenger wire 520-A (referred to herein as “suspension locations” ) , a spacing cord 540 is used. The spacing cord 540 may run substantially parallel to the messenger wire 520-A and may be anchored in a manner similar to the messenger wire 520-A to help minimize movement between the spacing cord 540 and the messenger wire 520-A. The spacing cord 540 may be made from a material similar to the hangers 510 as described above (e.g., a polymer cord (which may include a metal core) , nylon rope, etc) . To secure hangers 510 in place, the spacing cord 540 may have a plurality of apertures 550.
[0043] The callout box 560-A provides some additional details with respect to how an aperture 550 can a hanger 510 at a suspension location along the messenger wire 520-A.As illustrated, the suspension loops 570 of the hanger 510 pass through the aperture 550 and around the messenger wire 520-A, allowing the messenger wire 520-A to bear the weight of the trunk lines 530 (via the hanger 510) while the aperture 550 helps minimize movement in a lateral direction (as shown by arrow 580) , thereby effectively securing hangers 510 to suspension locations along the messenger wire 520-A. The aperture 550 may be formed from a knot in the spacing cord 540 or may be formed from a separate material (e.g., a metal loop or ring, polymer cord, a PVC-coated cable, etc. ) and attached to the spacing cord 540 (e.g., using clamps, clips, crimps, etc. ) .
[0044] Of course, the drawing of FIG. 5 a is a simplified example. As with other figures described herein, features such as sizes and shapes of the components illustrated may vary. In FIG. 5A, apertures 550 are illustrated as being circular or elliptical, but embodiments are not so limited. Apertures may have different sizes and shapes, which may depend partly on the material (s) with which the apertures 550 are made. An aperture 550 made from a threaded polymer cord, for example, may not necessarily maintain an elliptical shape, whereas an aperture 550 made from a more rigid material (e.g., a polymer cord having a metal core, or a polymer-coated wire) may be able to maintain a shape (e.g., approximately elliptical or circular) .
[0045] FIG. 5B is a drawing of a side view of a PV cable support system 500-B, according to an embodiment, illustrating a second technique for securing hangers 510 at certain locations along the messenger wire 520-B, according to an embodiment. Various features, such as hangers 510, messenger wire 520, trunk lines 530, and apertures 550 are labeled the same as corresponding features in FIG. 5A and perform the same functionality as previously described. Further, similar to FIG. 5A, suspension loops 570 extend through the aperture 550 and over the messenger wire 520-B, as illustrated in callout box 560-B.
[0046] In this second technique, however, rather than using a spacing cord, apertures 550 are located on the messenger wire 520-B itself. This can be done, for example, by using a special type of messenger wire 520-B that comprises a traditional messenger wire (e.g., a steel or aluminum threaded wire) , modified to further include a jacket or cover having the apertures 550 embedded (e.g., molded) therein. According to some embodiments, the jacket or cover may comprise a polymer material. In some embodiments, apertures 550 may be reinforced with metal or another durable material to help ensure longevity. According to some embodiments, apertures 550 may be spaced at various points along the messenger wire 520-B, not all of which may be used in a particular application. Put differently, a messenger wire 520-B may have apertures 550 embedded therein at periodic locations to allow different inter-hanger spacing options for different applications. For a particular application, hangers 510 may be preinstalled as previously described (e.g., with respect to FIG. 4A) at a desired spacing for the particular application.
[0047] As noted, hangers comprise suspension loop sets, in which each suspension loop may be openable to allow for cables to be removed or added to the suspension loop. It can be noted that suspension loops are nested, as illustrated in FIGS. 3-5B, where smaller suspension loops are roughly circumscribed by larger suspension loops (acknowledging that suspension loops may be positioned side-by-side along the messenger cable, as illustrated in callout boxes in FIGS. 5A and 5B) . As such, any cable that extends through a particular suspension loop also extends through any larger suspension loops that may circumscribe that particular suspension loop. Thus, to remove the cable from the particular suspension loop, both the particular suspension loop and any larger suspension loop (s) may be opened to extract the cable. FIGS. 6A and 6B illustrate simple examples by which suspension loops may be openable (e.g., suspension loop ends may be secured together and unsecured) .
[0048] FIG. 6A is a drawing of a first example configuration 600-A by which a first suspension loop end 610-1 may be secured to a second suspension loop end 610-2 (collectively and generically referred to herein as suspension loop ends 610) . In this configuration 600-A, the first suspension loop end 610-1 comprises a fastening hook 620, and the second suspension loop and 610-2 comprises a fastening loop 630. This enables the suspension loop ends 610 to be secured together by threading the fastening hook 620 through the fastening loop 630. Likewise, the suspension loop ends 610 may be unsecured by removing the fastening hook 620 from the fastening loop 630.
[0049] The example in FIG. 6A is simplified for purposes of illustration. As with other figures, proportions and sizes may vary, depending on materials used, desired functionality, and / or other factors. A hook design may be more elaborate, for example, to help prevent unintended unrecurring of the suspension loop ends 610 during shipping and / or after deployment of a PV cable support system. Once secured together, suspension loop ends 610 may be kept together by the rigidity of the material (s) used to create the suspension loop and / or the weight of the cable (s) supported by the suspension loop (which pull the suspension loop ends 610 in opposite directions, shown by arrows in FIG. 6A, further securing the fastening hook 620 in the fastening loop 630) .
[0050] The first example configuration 600-A illustrates a fastening hook 620 that may be formed at the end of a suspension loop. The formation of the fastening hook 620 may be possible in embodiments in which the material (s) with which the suspension loop is formed has / have some rigidity (e.g., a cord with a metal core) . Alternatively (e.g., embodiments in which the suspension loop is not made from a rigid material) , a fastening hook 620 made from a rigid material may be fastened (e.g., using a clamp, crimp, etc. ) to the end of the suspension loop. Additionally or alternatively, a fastening loop 630 may be made, distinct from a suspension loop, then fastened to the end of the suspension loop.
[0051] FIG. 6B is a drawing of a second example configuration 600-B by which suspension loop ends may be secured together and unsecured. In this configuration 600-B, both suspension loop ends include fastening loops 630, secured together using a fastening member 640. For example, this configuration 600-B can be used in embodiments where the suspension loop has insufficient rigidity to create a fastening hook 620.
[0052] As with the example of FIG. 6A, the example in FIG. 6B is simplified for illustration purposes. Again, proportions and sizes may vary depending on materials used, desired functionality, and / or other factors. A design of the fastening member 640 may be more elaborate, for example, to help prevent unintended unsecuring of the suspension loop ends 610 during shipping and / or after deployment of a PV cable support system. Again, once secured together, the suspension loop ends 610 may be kept together by the rigidity of the material (s) used to create the suspension loop and / or the weight of the cable (s) supported by the suspension loop.
[0053] FIG. 7 is a flow diagram of a method 700 of manufacturing or deploying a cable support system for solar cables, according to some embodiments. The method 700 may reflect aspects of the manufacturing process 400-A illustrated in FIG. 4A, which may be performed by a manufacturer and manufacturing facility, for example. Additionally or alternatively, the method 700 may reflect aspects of the deployment process 400-B illustrated in FIG. 4B, which may be performed by one or more installers at an installation site, for example. It will be understood that alternative embodiments may combine, separate, or rearrange operations illustrated in the blocks of FIG. 7, and / or may perform some functions in parallel. A person of ordinary skill in the art will appreciate such alternative embodiments.
[0054] The functionality at block 710 comprises securing a plurality of hangers along a messenger wire such that each hanger of the plurality of hangers is located at a respective suspension location along the messenger wire and comprises a respective first suspension loop, and a respective second suspension loop having a larger circumference than the respective first suspension loop. As described in the embodiments above, this may be done in different ways.
[0055] For example, as described above (e.g., with respect to FIGS. 4B and 5A) , a spacing cord may be used in some embodiments. Correspondingly, some embodiments of the method 700 may comprise including a spacing cord configured to run substantially parallel to the messenger wire when the cable support system is deployed. The spacing cord may be configured to secure each hanger of the plurality of hangers at the respective suspension location along the messenger wire. Optionally, in such embodiments, to secure each hanger of the plurality of hangers at the respective suspension location along the messenger wire, the spacing cord comprises a plurality of apertures, wherein each aperture of the plurality of apertures is located at the respective suspension location along the messenger wire, and the respective first suspension loop and the respective second suspension loop of each hanger of the plurality of hangers extend through a respective aperture of the plurality of apertures at the respective suspension location along the messenger wire. Additionally or alternatively being plurality of hangers, the spacing cord, or both, comprise a respective polymer cable or a polymer-coated wire.
[0056] The functionality at block 720 comprises extending a first trunk line through the respective first suspension loop and the respective second suspension loop of each hanger of the plurality of hangers. The functionality at block 730 comprises extending a second trunk line through the respective second suspension loop of each hanger of the plurality of hangers. The functionality of either or both blocks 720 and 730 may take place, for example, during manufacturer, as illustrated in FIG. 4A, or during deployment, as illustrated in FIG. 4B.
[0057] Embodiments of the method 700 may include one or more additional features, depending on desired functionality. For example, according to some embodiments of the method 700, the plurality of hangers may be configured such that, when the cable support system is deployed, the first trunk line and the second trunk line are suspended from the messenger wire via the plurality of hangers. For a manufacturing process, anchors may be preinstalled. As such, some embodiments of the method 700 may further comprise wrapping the messenger wire, the first trunk line, and the second trunk line around a reel. Further, as illustrated in the figures herein, come clients may be suspended in pairs. As such, according to some embodiments of the method 700, the first trunk line may be part of a first trunk line pair that extends through the respective first suspension loop and the respective second suspension loop of each hanger of the plurality of hangers, and the second trunk line may be part of a second trunk line pair that extends through the respective second suspension loop of each hanger of the plurality of hangers. According to some embodiments, to secure each hanger of the plurality of hangers at the respective suspension location along the messenger wire, the messenger wire comprises a cover having a plurality of apertures, wherein each aperture of the plurality of apertures is located at the respective suspension location along the messenger wire, and the respective first suspension loop and the respective second suspension loop of each hanger of the plurality of hangers extend through a respective aperture of the plurality of apertures at the respective suspension location along the messenger wire. An example of this is provided in FIG. 5B, described above. According to some embodiments, for one or more suspension loops of the plurality of hangers, the one or more suspension loops may include a respective first end and a respective second end that are secured together, and the one or more suspension loops may be opened by unsecuring the respective first end and the respective second end. Examples of features enabling this functionality are illustrated in FIGS. 6A and 6B.
[0058] The methods, systems, and devices discussed herein are examples. Various embodiments may omit, substitute, or add various procedures or components as appropriate. For instance, features described with respect to certain embodiments may be combined in various other embodiments. Different aspects and elements of the embodiments may be combined in a similar manner. The various components of the figures provided herein can be embodied in hardware and / or software. Also, technology evolves and, thus, many of the elements are examples that do not limit the scope of the disclosure to those specific examples.
[0059] It has proven convenient at times, principally for reasons of common usage, to refer to such signals as bits, information, values, elements, symbols, characters, variables, terms, numbers, numerals, or the like. It should be understood, however, that all of these or similar terms are to be associated with appropriate physical quantities and are merely convenient labels. Unless specifically stated otherwise, as is apparent from the discussion above, it is appreciated that throughout this Specification discussion utilizing terms such as “processing, ” “computing, ” “calculating, ” “determining, ” “ascertaining, ” “identifying, ” “associating, ” “measuring, ” “performing, ” or the like refer to actions or processes of a specific apparatus, such as a special purpose computer or a similar special purpose electronic computing device. In the context of this Specification, therefore, a special purpose computer or a similar special purpose electronic computing device is capable of manipulating or transforming signals, typically represented as physical electronic, electrical, or magnetic quantities within memories, registers, or other information storage devices, transmission devices, or display devices of the special purpose computer or similar special purpose electronic computing device.
[0060] Terms, “and” and “or” as used herein, may include a variety of meanings that also is expected to depend, at least in part, upon the context in which such terms are used. Typically, “or” if used to associate a list, such as A, B, or C, is intended to mean A, B, and C, here used in the inclusive sense, as well as A, B, or C, here used in the exclusive sense. In addition, the term “one or more” as used herein may be used to describe any feature, structure, or characteristic in the singular or may be used to describe some combination of features, structures, or characteristics. However, it should be noted that this is merely an illustrative example and claimed subject matter is not limited to this example. Furthermore, the term “at least one of” if used to associate a list, such as A, B, or C, can be interpreted to mean any combination of A, B, and / or C, such as A, AB, AA, AAB, AABBCCC, etc.
[0061] Having described several embodiments, various modifications, alternative constructions, and equivalents may be used without departing from the scope of the disclosure. For example, the above elements may merely be a component of a larger system, wherein other rules may take precedence over or otherwise modify the application of the various embodiments. Also, a number of steps may be undertaken before, during, or after the above elements are considered. Accordingly, the above description does not limit the scope of the disclosure
[0062] In view of this description embodiments may include different combinations of features. Implementation examples are described in the following numbered clauses:
[0063] Clause 1: A cable support system for solar cables, the cable support system comprising: a messenger wire; a plurality of hangers, wherein each hanger of the plurality of hangers is located at a respective suspension location along the messenger wire and comprises: a respective first suspension loop, and a respective second suspension loop having a larger circumference than the respective first suspension loop; a first trunk line extending through the respective first suspension loop and the respective second suspension loop of each hanger of the plurality of hangers; and a second trunk line extending through the respective second suspension loop of each hanger of the plurality of hangers.
[0064] Clause 2: The cable support system of clause 1, further comprising a spacing cord configured to run substantially parallel to the messenger wire when the cable support system is deployed, wherein the spacing cord is configured to secure each hanger of the plurality of hangers at the respective suspension location along the messenger wire.
[0065] Clause 3: The cable support system of clause 2, wherein, to secure each hanger of the plurality of hangers at the respective suspension location along the messenger wire, the spacing cord comprises a plurality of apertures, wherein: each aperture of the plurality of apertures is located at the respective suspension location along the messenger wire; and the respective first suspension loop and the respective second suspension loop of each hanger of the plurality of hangers extend through a respective aperture of the plurality of apertures at the respective suspension location along the messenger wire.
[0066] Clause 4: The cable support system of any one of clauses 2-3, wherein the plurality of hangers, the spacing cord, or both, comprise a respective polymer cable or a polymer-coated wire.
[0067] Clause 5: The cable support system of any one of clauses 1-4, wherein the plurality of hangers are configured such that, when the cable support system is deployed, the first trunk line and the second trunk line are suspended from the messenger wire via the plurality of hangers.
[0068] Clause 6: The cable support system of any one of clauses 1-5, wherein the messenger wire, the first trunk line, and the second trunk line are wrapped around a reel.
[0069] Clause 7: The cable support system of any one of clauses 1-6, wherein: the first trunk line is part of a first trunk line pair that extends through the respective first suspension loop and the respective second suspension loop of each hanger of the plurality of hangers; and the second trunk line is part of a second trunk line pair that extends through the respective second suspension loop of each hanger of the plurality of hangers.
[0070] Clause 8: The cable support system of any one of clauses 1-7, wherein, to secure each hanger of the plurality of hangers at the respective suspension location along the messenger wire, the messenger wire comprises a cover having a plurality of apertures, wherein: each aperture of the plurality of apertures is located at the respective suspension location along the messenger wire; and the respective first suspension loop and the respective second suspension loop of each hanger of the plurality of hangers extend through a respective aperture of the plurality of apertures at the respective suspension location along the messenger wire.
[0071] Clause 9: The cable support system of any one of clauses 1-8, wherein, for one or more suspension loops of the plurality of hangers: the one or more suspension loops include a respective first end and a respective second end that are secured together, and the one or more suspension loops may be opened by unsecuring the respective first end and the respective second end.
[0072] Clause 10: A method of manufacturing or deploying a cable support system for solar cables, the method comprising: securing a plurality of hangers along a messenger wire such that, when the cable support system is deployed, each hanger of the plurality of hangers is located at a respective suspension location along the messenger wire, each hanger of the plurality of hangers comprising: a respective first suspension loop, and a respective second suspension loop having a larger circumference than the respective first suspension loop; extending a first trunk line through the respective first suspension loop and the respective second suspension loop of each hanger of the plurality of hangers; and extending a second trunk line through the respective second suspension loop of each hanger of the plurality of hangers.
[0073] Clause 11: The method of clause 10, further comprising including a spacing cord configured to run substantially parallel to the messenger wire when the cable support system is deployed, wherein the spacing cord is configured to secure each hanger of the plurality of hangers at the respective suspension location along the messenger wire.
[0074] Clause 12: The method of clause 11, wherein, to secure each hanger of the plurality of hangers at the respective suspension location along the messenger wire, the spacing cord comprises a plurality of apertures, wherein: each aperture of the plurality of apertures is located at the respective suspension location along the messenger wire; and the respective first suspension loop and the respective second suspension loop of each hanger of the plurality of hangers extend through a respective aperture of the plurality of apertures at the respective suspension location along the messenger wire.
[0075] Clause 13: The method of any one of clauses 10-12, wherein the plurality of hangers, the spacing cord, or both, comprise a respective polymer cable or a polymer-coated wire.
[0076] Clause 14: The method of any one of clauses 10-13, wherein the plurality of hangers are configured such that, when the cable support system is deployed, the first trunk line and the second trunk line are suspended from the messenger wire via the plurality of hangers.
[0077] Clause 15: The method of any one of clauses 10-14, further comprising wrapping the messenger wire, the first trunk line, and the second trunk line around a reel.
[0078] Clause 16: The method of any one of clauses 10-15, wherein: the first trunk line is part of a first trunk line pair that extends through the respective first suspension loop and the respective second suspension loop of each hanger of the plurality of hangers; and the second trunk line is part of a second trunk line pair that extends through the respective second suspension loop of each hanger of the plurality of hangers.
[0079] Clause 17: The method of any one of clauses 10-16, wherein, to secure each hanger of the plurality of hangers at the respective suspension location along the messenger wire, the messenger wire comprises a cover having a plurality of apertures, wherein: each aperture of the plurality of apertures is located at the respective suspension location along the messenger wire; and the respective first suspension loop and the respective second suspension loop of each hanger of the plurality of hangers extend through a respective aperture of the plurality of apertures at the respective suspension location along the messenger wire.
[0080] Clause 18: The method of any one of clauses 10-17, wherein, for one or more suspension loops of the plurality of hangers: the one or more suspension loops include a respective first end and a respective second end that are secured together, and the one or more suspension loops may be opened by unsecuring the respective first end and the respective second end.
[0081] Clause 19: A solar cable hanger comprising: a first suspension loop; and a second suspension loop having a larger circumference than the first suspension loop, wherein the circumference of the second suspension loop is sufficiently larger than the circumference of the first suspension loop such that, when the hanger is installed at a suspension location along a messenger wire of a cable support system, at least a threshold spacing exists between (i) a first trunk line that extends through the first suspension loop and the second suspension loop, and (ii) a second trunk line extending through the second suspension loop, when the cable support system is deployed.
[0082] Clause 20: The solar cable hanger of clause 19, wherein, for the first suspension loop, the second suspension loop, or both, a respective first end and a respective second end of the suspension loop may be secured together to close the suspension loop and may be unsecured to open the suspension loop.
Claims
1.A cable support system for solar cables, the cable support system comprising:a messenger wire;a plurality of hangers, wherein each hanger of the plurality of hangers is located at a respective suspension location along the messenger wire and comprises:a respective first suspension loop, anda respective second suspension loop having a larger circumference than the respective first suspension loop;a first trunk line extending through the respective first suspension loop and the respective second suspension loop of each hanger of the plurality of hangers; anda second trunk line extending through the respective second suspension loop of each hanger of the plurality of hangers.2.The cable support system of claim 1, further comprising a spacing cord configured to run substantially parallel to the messenger wire when the cable support system is deployed, wherein the spacing cord is configured to secure each hanger of the plurality of hangers at the respective suspension location along the messenger wire.3.The cable support system of claim 2, wherein, to secure each hanger of the plurality of hangers at the respective suspension location along the messenger wire, the spacing cord comprises a plurality of apertures, wherein:each aperture of the plurality of apertures is located at the respective suspension location along the messenger wire; andthe respective first suspension loop and the respective second suspension loop of each hanger of the plurality of hangers extend through a respective aperture of the plurality of apertures at the respective suspension location along the messenger wire.4.The cable support system of claim 2, wherein the plurality of hangers, the spacing cord, or both, comprise a respective polymer cable or a polymer-coated wire.5.The cable support system of claim 1, wherein the plurality of hangers are configured such that, when the cable support system is deployed, the first trunk line and the second trunk line are suspended from the messenger wire via the plurality of hangers.6.The cable support system of claim 1, wherein the messenger wire, the first trunk line, and the second trunk line are wrapped around a reel.7.The cable support system of claim 1, wherein:the first trunk line is part of a first trunk line pair that extends through the respective first suspension loop and the respective second suspension loop of each hanger of the plurality of hangers; andthe second trunk line is part of a second trunk line pair that extends through the respective second suspension loop of each hanger of the plurality of hangers.8.The cable support system of claim 1, wherein, to secure each hanger of the plurality of hangers at the respective suspension location along the messenger wire, the messenger wire comprises a cover having a plurality of apertures, wherein:each aperture of the plurality of apertures is located at the respective suspension location along the messenger wire; andthe respective first suspension loop and the respective second suspension loop of each hanger of the plurality of hangers extend through a respective aperture of the plurality of apertures at the respective suspension location along the messenger wire.9.The cable support system of claim 1, wherein, for one or more suspension loops of the plurality of hangers:the one or more suspension loops include a respective first end and a respective second end that are secured together, andthe one or more suspension loops may be opened by unsecuring the respective first end and the respective second end.10.A method of manufacturing or deploying a cable support system for solar cables, the method comprising:securing a plurality of hangers along a messenger wire such that, when the cable support system is deployed, each hanger of the plurality of hangers is located at a respective suspension location along the messenger wire, each hanger of the plurality of hangers comprising:a respective first suspension loop, anda respective second suspension loop having a larger circumference than the respective first suspension loop;extending a first trunk line through the respective first suspension loop and the respective second suspension loop of each hanger of the plurality of hangers; andextending a second trunk line through the respective second suspension loop of each hanger of the plurality of hangers.11.The method of claim 10, further comprising including a spacing cord configured to run substantially parallel to the messenger wire when the cable support system is deployed, wherein the spacing cord is configured to secure each hanger of the plurality of hangers at the respective suspension location along the messenger wire.12.The method of claim 11, wherein, to secure each hanger of the plurality of hangers at the respective suspension location along the messenger wire, the spacing cord comprises a plurality of apertures, wherein:each aperture of the plurality of apertures is located at the respective suspension location along the messenger wire; andthe respective first suspension loop and the respective second suspension loop of each hanger of the plurality of hangers extend through a respective aperture of the plurality of apertures at the respective suspension location along the messenger wire.13.The method of claim 11, wherein the plurality of hangers, the spacing cord, or both, comprise a respective polymer cable or a polymer-coated wire.14.The method of claim 10, wherein the plurality of hangers are configured such that, when the cable support system is deployed, the first trunk line and the second trunk line are suspended from the messenger wire via the plurality of hangers.15.The method of claim 10, further comprising wrapping the messenger wire, the first trunk line, and the second trunk line around a reel.16.The method of claim 10, wherein:the first trunk line is part of a first trunk line pair that extends through the respective first suspension loop and the respective second suspension loop of each hanger of the plurality of hangers; andthe second trunk line is part of a second trunk line pair that extends through the respective second suspension loop of each hanger of the plurality of hangers.17.The method of claim 10, wherein, to secure each hanger of the plurality of hangers at the respective suspension location along the messenger wire, the messenger wire comprises a cover having a plurality of apertures, wherein:each aperture of the plurality of apertures is located at the respective suspension location along the messenger wire; andthe respective first suspension loop and the respective second suspension loop of each hanger of the plurality of hangers extend through a respective aperture of the plurality of apertures at the respective suspension location along the messenger wire.18.The method of claim 10, wherein, for one or more suspension loops of the plurality of hangers:the one or more suspension loops include a respective first end and a respective second end that are secured together, andthe one or more suspension loops may be opened by unsecuring the respective first end and the respective second end.19.A solar cable hanger comprising:a first suspension loop; anda second suspension loop having a larger circumference than the first suspension loop, wherein the circumference of the second suspension loop is sufficiently larger than the circumference of the first suspension loop such that, when the hanger is installed at a suspension location along a messenger wire of a cable support system, at least a threshold spacing exists between (i) a first trunk line that extends through the first suspension loop and the second suspension loop, and (ii) a second trunk line extending through the second suspension loop, when the cable support system is deployed.20.The solar cable hanger of claim 19, wherein, for the first suspension loop, the second suspension loop, or both, a respective first end and a respective second end of the suspension loop may be secured together to close the suspension loop and may be unsecured to open the suspension loop.
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