Prefabricated wire harness for supplying power to equipment in cabinet, wire harness group and electronic equipment

Abstract

The invention provides a prefabricated wire harness for supplying power to equipment in a cabinet, a wire harness group and electronic equipment. Each prefabricated wire harness comprises a main wire with a first wire diameter and a plurality of branch wires with a second wire diameter, wherein the first wire diameter is greater than or equal to the second wire diameter; and each branch wire is connected with the main wire by adopting a twisting, overlapping and winding method. The main wire and the branch wires are connected by adopting a twisting, overlapping and winding method, the whole main wire structure has no breakpoints, cable faults caused by multiple contacts are avoided, the number of joints is reduced, the wire diameter of the main wire can be increased due to the fact that only one wire is connected to the wiring end, the integration time is saved, and meanwhile, the integration efficiency is improved. The number of wires is reduced, integration efficiency is improved, wiring errors are prevented, and on-site maintenance and repair efficiency is improved; the fault of one branch lead only affects one device, so that the influence of a fault point on the whole control system is avoided; the wire harness groups can be integrated offline in batches, so that the online integration time is saved, the manufacturing period is shortened, the cost is reduced, and the quality is improved.

Description

Technical Field

[0001] This disclosure relates to the field of low-voltage power transmission and distribution technology, and in particular to a prefabricated wiring harness, wiring harness group and electronic equipment for power supply of equipment in a cabinet. Background Technology

[0002] With the advancement of technology and the continuous development of low-voltage power transmission and distribution technology, standardization, visual accessibility, compact size, and ease of maintenance have become development trends for cabinet power distribution devices. Traditionally, 24V equipment I / O (input / output) modules are laid in a daisy-chain parallel connection, with the power terminals on the I / O modules only capable of connecting to a maximum of 1.5mm². 2 Because the conductors are (square millimeters), a traditional daisy-chain parallel connection is used, limiting the diameter of each conductor to 0.75mm. 2 Within this range, there are many wire joints, and poor contact at any joint can cause the entire link to fail, making troubleshooting difficult. Wiring technology relies entirely on the wiring technician's skills, and the quality of wiring is affected by human factors and cannot be guaranteed, resulting in low efficiency for on-site maintenance and repair. Summary of the Invention

[0003] The technical problem to be solved by this disclosure is to overcome the above-mentioned defects in the prior art and provide a prefabricated wiring harness, wiring harness group and electronic equipment for powering equipment in a cabinet.

[0004] This disclosure solves the above-mentioned technical problems through the following technical solution:

[0005] This disclosure provides a prefabricated wiring harness for powering equipment in a cabinet, each of the prefabricated wiring harnesses comprising: a main conductor of a first diameter and a plurality of branch conductors of a second diameter; wherein the first diameter is greater than or equal to the second diameter;

[0006] Each of the branch conductors is connected to the main conductor by a twisting and overlapping winding method.

[0007] Optionally, the outside of the knotted portion where the branch conductor and the main conductor are twisted and wrapped is covered with copper fastener tape.

[0008] Optionally, heat shrink tubing is used to cover the outside of the copper buckle strip to achieve outer insulation, and the length of the heat shrink tubing is greater than the length of the copper buckle strip.

[0009] Optionally, both the main conductor and the branch conductors have number tube markings at their ends.

[0010] Optionally, each of the branch wires adopts one of a first color and a second color; the first color corresponds to the positive terminal of the power signal, and the second color corresponds to the negative terminal of the power signal.

[0011] Optionally, one end of the main line is used to connect to the power supply terminal outlet end of the cabinet to serve as an external port of the main line.

[0012] The other end of the main line is sealed with a heat-shrink end cap.

[0013] Each of the branch wires has an external port connected to the power terminal base of the I / O module PCB of the device inside the cabinet.

[0014] Optionally, the external ports of the main conductor and the branch conductors are connected via terminal blocks;

[0015] The external port of the main line uses one of the third and fourth colors; the third color corresponds to the positive terminal of the power signal, and the fourth color corresponds to the negative terminal of the power signal.

[0016] The external port of the branch wire uses one of the fifth and sixth colors; the fifth color corresponds to the positive terminal of the power signal, and the sixth color corresponds to the negative terminal of the power signal.

[0017] This disclosure also provides a wiring harness assembly for powering devices within a cabinet, each of the wiring harness assemblies comprising a plurality of the aforementioned prefabricated wiring harnesses for powering devices within a cabinet.

[0018] Optionally, the wire harness assembly further includes: a braided mesh;

[0019] The braided mesh covers a portion of the heat shrink tubing located at a first position in the wire harness group and a portion of the main conductor. The length of the heat shrink tubing covered by the braided mesh is greater than or equal to a preset length. The first position is between the external port of the main conductor and the adjacent branch conductor in each main conductor.

[0020] And / or,

[0021] The wire harness assembly also includes: cable ties;

[0022] The prefabricated wire harnesses are arranged accordingly, and the cable tie secures all the wire harnesses in the group at the second position in the group; the second position is the middle of the branch conductors in two adjacent prefabricated wire harnesses.

[0023] And / or,

[0024] The wiring harness also includes: PCB power terminals;

[0025] The prefabricated wire harnesses are arranged accordingly, and the external ports of the branch wires in the same position are connected to the corresponding I / O module PCB power terminal base through the same PCB power terminal.

[0026] This disclosure also provides an electronic device that includes the aforementioned wiring harness for powering devices within a cabinet.

[0027] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this disclosure.

[0028] The positive and progressive effects of this disclosure are as follows: A main conductor is connected to multiple branch conductors using a twisted and overlapping winding method, resulting in a seamless main conductor structure that avoids cable faults caused by numerous connection points, reduces the number of joints, and allows for a larger main conductor diameter since only one conductor is connected at the terminal, saving integration time. Simultaneously, it reduces the number of conductors, improves integration efficiency, prevents wiring errors, and enhances on-site maintenance and repair efficiency. The copper-clad tape and heat-shrink tubing effectively ensure the branch connection strength, conductivity stability, and insulation protection safety. The numbered tube markings and the multiple colors of the wires and tubes improve intuitiveness and visual appeal. Distinguishing and misplacement capabilities: A faulty branch wire only affects one device, avoiding the impact of the fault point on the entire control system; wire harnesses can be integrated offline in batches, saving online integration time, shortening the manufacturing cycle, reducing costs, and improving quality; prefabricated wire harnesses and wire harness assemblies for power supply to devices inside the cabinet (e.g., 24V) simplify assembly operations, effectively avoid quality risks, reduce labor costs, effectively improve integration efficiency, reduce link failure rates, save cabinet space, ensure stable quality, reduce labor intensity, prevent quality problems and safety hazards caused by human factors, and improve the aesthetics of cabinet cabling. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a prefabricated wiring harness for powering equipment inside a cabinet, provided in Embodiment 1 of this disclosure;

[0030] Figure 2 A schematic diagram of a prior art prefabricated wiring harness for powering equipment in a cabinet, provided for Embodiment 1 of this disclosure;

[0031] Figure 3 This is a schematic diagram of a wiring harness assembly for powering equipment within a cabinet, provided in Embodiment 2 of this disclosure;

[0032] Figure 4 This is a panel diagram illustrating an application example of a wiring harness assembly for powering equipment within a cabinet, provided in Embodiment 2 of this disclosure. Detailed Implementation

[0033] The present disclosure is further illustrated below by way of embodiments, but the present disclosure is not limited to the scope of the embodiments described herein.

[0034] The prefixes such as "first" and "second" used in this disclosure are merely for distinguishing different descriptive objects and do not limit the position, order, priority, quantity, or content of the described objects. The use of ordinal numbers and other prefixes used to distinguish descriptive objects in this disclosure does not constitute a limitation on the described objects. The description of the described objects is given in the claims or the context of the embodiments, and should not be construed as an unnecessary limitation. Furthermore, in the description of this embodiment, unless otherwise stated, "multiple" means two or more.

[0035] Example 1

[0036] Reference Figure 1 This embodiment provides a prefabricated wiring harness for powering equipment within a cabinet. Each prefabricated wiring harness includes: a main conductor (1.1) of a first diameter and several branch conductors (10.1-10.8) of a second diameter. The first diameter is greater than or equal to the second diameter. Figure 1 In the example, the first wire diameter is 1.5mm. 2 The second wire diameter is 0.5mm. 2 The number of branch conductors is 8, "..." indicates 5 branch conductors omitted, the unit is mm, and the tolerance is ±2mm.

[0037] Each of the branch conductors is connected to the main conductor by a twisting and overlapping winding method.

[0038] in, Figure 2 This illustrates an example of a traditional 24V (power supply voltage) device I / O (input / output) module power supply method. The device I / O modules are connected in a daisy-chain parallel configuration, and the power terminals on the I / O modules can connect up to 1.5mm². 2 The wires are connected in a traditional daisy-chain parallel configuration, limiting the diameter of each wire to 0.75mm. 2 Within this range, there are many wire joints, and poor contact at any joint can cause the entire link to fail, making troubleshooting difficult. Wiring technology relies entirely on the wiring technician's skills, and wiring quality cannot be guaranteed due to human factors, resulting in low efficiency for on-site maintenance and repair. If a single wire is faulty, the original crimping terminal needs to be damaged, the wire replaced, and then stripped and crimped again, which is inefficient and may result in the wire being too short to be used after re-crimping, leading to more rework and laying work.

[0039] In this embodiment, the first wire diameter, the second wire diameter, and the number of branch wires can be set according to actual conditions (such as power supply voltage or the load size of a single power supply module). For example, the first wire diameter is 1.5mm. 2 The second wire diameter is 0.5mm. 2 The number of branch wires is 8.

[0040] Preferably, both the main conductor and the branch conductors are single-core low-smoke halogen-free flame-retardant flexible conductors.

[0041] The entire main conductor structure is uninterrupted, avoiding cable faults caused by numerous joints, reducing the number of connectors, and because only one wire is connected to each terminal, the diameter of the main conductor can be increased, for example, from 0.75mm. 2 Increased to 1.5mm 2 This saves integration time. At the same time, it reduces the number of wires, improves integration efficiency, prevents wiring errors, and enhances on-site maintenance and repair efficiency.

[0042] The second wire diameter of the branch conductor can be selected solely based on the load size of a single power supply module, which is superior to the daisy-chain structure (which requires consideration of the load capacity of all daisy-chain devices). Selecting the wire diameter based on the load of a single power supply module is no longer limited to the original 0.75mm. 2 It can be changed to 0.5mm 2 This ensures current carrying capacity while saving on conductor material costs and guarantees stable and reliable electrical connections.

[0043] In this embodiment, a main conductor and multiple branch conductors are connected by a twisted and overlapping winding method. The entire main conductor structure is unbroken, avoiding cable faults caused by multiple connection points, reducing the number of joints, and since only one conductor is connected to the terminal, the diameter of the main conductor can be increased, saving integration time. At the same time, reducing the number of conductors improves integration efficiency, prevents wiring errors, and improves on-site maintenance and repair efficiency. The copper fastener tape and heat shrink tubing effectively ensure the branch connection strength, conductivity stability, and insulation protection safety of the connection parts. The number tube markings and the multiple colors of the wires and tubes improve intuitiveness and visual differentiation. It also offers advantages such as fault tolerance; a faulty branch wire only affects one device, avoiding the impact of the fault point on the entire control system; wire harnesses can be integrated offline in batches, saving online integration time, shortening the manufacturing cycle, reducing costs, and improving quality; prefabricated wire harnesses and wire harness assemblies for power supply to devices inside the cabinet (e.g., 24V) simplify assembly operations, effectively avoid quality risks, reduce labor costs, effectively improve integration efficiency, reduce link failure rate, save cabinet space, ensure stable quality, reduce labor intensity, prevent quality problems and safety hazards caused by human factors, and improve the aesthetics of cabinet cabling.

[0044] In one embodiment, referring to Figure 1 The outside of the knotted portion where the branch conductor and the main conductor are twisted and wrapped is covered with copper buckle tape.

[0045] The copper buckle tape effectively ensures the branch connection strength, conductivity stability, and insulation protection safety by wrapping the connection parts.

[0046] In one embodiment, referring to Figure 1 The copper buckle strip is covered with heat shrink tubing to achieve outer insulation, and the length of the heat shrink tubing is greater than the length of the copper buckle strip.

[0047] The copper fastener tape and heat shrink tubing effectively ensure the strength of the branch connection, conductivity stability, and insulation protection safety by wrapping the connection parts.

[0048] The shrinkage ratio, length, and stripping length of the heat shrink tubing can be set according to the actual situation.

[0049] Preferably, the shrinkage ratio of the heat shrink tubing is 3:1, and the stripping length of both ends of the heat shrink tubing is ≥ 10mm.

[0050] In one embodiment, referring to Figure 1 Both the main conductor and the branch conductors have number tube markings at their ends.

[0051] Among them, the number tube markings improve intuitiveness, visual differentiation, and the prevention of misplacement.

[0052] In one embodiment, each branch wire uses one of a first color and a second color. The first color corresponds to the positive terminal of the power signal, and the second color corresponds to the negative terminal of the power signal.

[0053] You can set the first color and the second color according to the actual situation. For example, the first color is red and the second color is white.

[0054] Among these features, the multiple colors of the wires improve intuitiveness, visual differentiation, and the prevention of misplacement.

[0055] In one embodiment, referring to Figure 1 One end of the main line (the end labeled 1.1, 1.2, 1.3 and 1.4 in the figure) is used to connect to the power supply terminal outlet end inside the cabinet, as an external port of the main line.

[0056] The other end of the main line is sealed with a heat-shrink end cap (6).

[0057] Each of the branch wires has an external port connected to the power terminal base of the I / O module PCB of the device inside the cabinet.

[0058] Each branch wire's external port can be connected to the PCB power terminal base of the I / O module of the equipment inside the cabinet via the PCB power terminal.

[0059] In one embodiment, referring to Figure 1The external ports (3.1 and 3.2) of the main conductor and the external ports (4.1 and 4.2) of the branch conductor are connected via terminal blocks.

[0060] The external port of the main line uses one of the third and fourth colors. The third color corresponds to the positive terminal of the power signal, and the fourth color corresponds to the negative terminal of the power signal.

[0061] The external ports of the branch conductors use one of the fifth and sixth colors. The fifth color corresponds to the positive terminal of the power signal, and the sixth color corresponds to the negative terminal of the power signal.

[0062] The third, fourth, fifth, and sixth colors can be set according to the actual situation. For example, the third color is red, the fourth color is black, the fifth color is orange, and the sixth color is white.

[0063] It is understandable that the color corresponding to the positive terminal of the power signal must be distinguished from the color corresponding to the negative terminal of the power signal, while the colors corresponding to the same terminal can be the same.

[0064] Preferably, the external port (3.1) of the main line adopts ET1.5-8RD, the external port (3.2) of the main line adopts ET1.5-8BK, the external port (4.1) of the branch line adopts ET0.5-6OE and is used for IPW (internal power supply) interface, and the external port (4.2) of the branch line adopts ET0.5-6OE and is used for EPW (external power supply) interface.

[0065] The use of multiple colors for the external terminals (sleeves or tubular structures) of the wires improves intuitiveness, visual differentiation, and the prevention of misplacement.

[0066] Example 2

[0067] Reference Figure 3 This embodiment provides a wiring harness group for powering equipment in a cabinet, each of the wiring harness groups including a plurality of the aforementioned prefabricated wiring harnesses for powering equipment in a cabinet. Figure 3 In the example, the first wire diameter is 1.5mm. 2 The second wire diameter is 0.5mm. 2 Each prefabricated wire harness contains 8 branch conductors. "..." indicates that 5 branch conductors are omitted in the same prefabricated wire harness. The unit is mm, and the tolerance is ±2mm.

[0068] in, Figure 4 This diagram shows an example panel layout for a wiring harness assembly used in a 24V device power supply application within a cabinet. 1 represents the 24V I / O module PCB power terminal block (i.e., the 24V power supply terminal block), and 2 represents the wiring harness assembly.

[0069] Due to the structure of the wiring harness, the configuration of I / O modules in the cabinet is not affected by the power supply of the internal IPW and external EPW of different modules, and has strong expandability.

[0070] The number of prefabricated wire harnesses in the wire harness group can be set according to the actual situation.

[0071] In this embodiment, a main conductor and multiple branch conductors are connected by a twisted and overlapping winding method. The entire main conductor structure is unbroken, avoiding cable faults caused by multiple connection points, reducing the number of joints, and since only one conductor is connected to the terminal, the diameter of the main conductor can be increased, saving integration time. At the same time, reducing the number of conductors improves integration efficiency, prevents wiring errors, and improves on-site maintenance and repair efficiency. The copper fastener tape and heat shrink tubing effectively ensure the branch connection strength, conductivity stability, and insulation protection safety of the connection parts. The number tube markings and the multiple colors of the wires and tubes improve intuitiveness and visual differentiation. It also offers advantages such as fault tolerance; a faulty branch wire only affects one device, avoiding the impact of the fault point on the entire control system; wire harnesses can be integrated offline in batches, saving online integration time, shortening the manufacturing cycle, reducing costs, and improving quality; prefabricated wire harnesses and wire harness assemblies for power supply to devices inside the cabinet (e.g., 24V) simplify assembly operations, effectively avoid quality risks, reduce labor costs, effectively improve integration efficiency, reduce link failure rate, save cabinet space, ensure stable quality, reduce labor intensity, prevent quality problems and safety hazards caused by human factors, and improve the aesthetics of cabinet cabling.

[0072] In one embodiment, referring to Figure 3 The wire harness group further includes: a braided mesh (7).

[0073] The braided mesh covers a portion of the heat shrink tubing located at a first position in the wire harness group, as well as a portion of the main conductor. The length of the heat shrink tubing covered by the braided mesh is greater than or equal to a preset length. The first position is between the external port of the main conductor and the adjacent branch conductor in each main conductor group.

[0074] The preset length can be set according to the actual situation, such as 20mm.

[0075] Preferably, the woven mesh is made of PET-10B, one end of which must not cover the number tube, and the other end must be covered with heat shrink tubing for a length of ≥20mm.

[0076] In one embodiment, referring to Figure 3 The wire harness group also includes: cable ties (8).

[0077] The prefabricated wire harnesses are arranged accordingly, and the cable ties secure all the wire harnesses in the group at a second position within the group. The second position is the middle of the branch conductors within two adjacent prefabricated wire harnesses.

[0078] Among them, the cable ties can be CV-100 V0.

[0079] In one embodiment, the wiring harness further includes: PCB power terminals.

[0080] The prefabricated wire harnesses are arranged accordingly, and the external ports of the branch wires in the same position are connected to the corresponding I / O module PCB power terminal base through the same PCB power terminal.

[0081] The PCB power terminals can be model UEP-200VW-3.81 / 04-G.

[0082] The following is an application example of a wiring harness used for powering equipment within a server rack. (Refer to...) Figure 3 and Figure 4 .

[0083] Figure 3 The various structures are explained below:

[0084] 1.1 Single-core low-smoke halogen-free flame-retardant flexible wire, red, wire diameter: 1.5mm²;

[0085] 1.2 Single-core low-smoke halogen-free flame-retardant flexible conductor, white, wire diameter: 1.5mm²;

[0086] 1.3 Single-core low-smoke halogen-free flame-retardant flexible conductor, white, wire diameter: 1.5mm²;

[0087] 1.4 Single-core low-smoke halogen-free flame-retardant flexible wire, red, wire diameter: 1.5mm²;

[0088] 2.1 Single-core low-smoke halogen-free flame-retardant flexible wire, red, wire diameter: 0.5mm²;

[0089] 2.2 Single-core low-smoke halogen-free flame-retardant flexible wire, white, wire diameter: 0.5mm²;

[0090] 2.3 Single-core low-smoke halogen-free flame-retardant flexible conductor, white, wire diameter: 0.5mm²;

[0091] 2.4 Single-core low-smoke halogen-free flame-retardant flexible conductor, white, wire diameter: 0.5mm²;

[0092] 3.1 European-style terminal, ET1.5-8RD, red;

[0093] 3.2 European-style terminal, ET1.5-8BK, black;

[0094] 4.1 European-style terminal, ET0.5-6OE, orange (IPW);

[0095] 4.2 European-style terminal, ET0.5-6OE, white (EPW);

[0096] 5. Heat shrink tubing, black, tubing diameter 6mm, shrinkage ratio 3:1, with stripping length ≥ 10mm extending from both ends;

[0097] 6. Heat-shrink end caps, black;

[0098] 7. Woven mesh, PET-10B, black. Cut to desired length, one end must not cover the number tube, and the other end must be covered with heat shrink tubing ≥ 20mm in length;

[0099] 8. Cable ties, CV-100 V0, are used to secure each branch in a bundle approximately in the middle. The ties should be neatly cut, and the cut should be close to the head of the branch.

[0100] 9.1 Number tube, OMR-2.0, Printed character: A+, Character height 2.5mm, Black, Printer supports bold text, Trim length 10mm;

[0101] 9.2 Number tube, OMR-2.0, Printed character: A-, Character height 2.5mm, Black, Printer supports bold text, Trim length 10mm.

[0102] 9.3 Number tube, OMR-2.0, Print character: B-, Character height 2.5mm, Black, Printer supports bold text, Trim length 10mm;

[0103] 9.4 number tube, OMR-2.0, print character: B+, character height 2.5mm, black, printer supports bold text, trim length 10mm;

[0104] 10.1~10.8, Number tube, OMR-0.5, Printed character: A+, Character height 2.5mm, Black, bold if printer supports it, Trim length 10mm;

[0105] 11.1~11.8, Number tube, OMR-0.5, Printed character: A-, Character height 2.5mm, Black, bold if printer supports it, Trim length 10mm;

[0106] 12.1~12.8, Number tube, OMR-0.5, Print character: B-, Character height 2.5mm, Black, bold if printer supports it, Trim length 10mm;

[0107] 13.1~13.8, Number tube, OMR-0.5, Printed character: B+, Character height 2.5mm, Black, Black font when printer supports it, Trim length 10mm;

[0108] 14 Copper buckle strip, 454B, covering the knotted position where the base material and branch are twisted and wrapped.

[0109] Figure 4 In the control cabinet, the top 1 features a 220V to 24V power supply terminal block, and the 2nd section contains a prefabricated 24V power supply wiring harness structure. The prefabricated wiring harness structure is fixed inside the cabinet, and power is supplied by plugging the PCB power terminals into the terminals of the equipment requiring power. This 24V power supply prefabricated wiring harness structure consists of four wires (A+ / B+ / A- / B-), two red wires (1.1 A+ / 1.3 B+) and two white wires (1.2 A- / 1.4 B-). These four wires are protected by a black braided mesh, forming a power cable harness structure. Each wire harness consists of a 1.5mm² wire. 2 Low-smoke flame-retardant wires and 8 0.5mm wires 2 The branch conductors consist of 2.1-2.4 wires, with 4 wire bundles (A+ / B+ / A- / B-) having numbered tubes at the ends (9.1-9.4), followed by crimped terminals (3.1-3.2). The 8 branch conductors use 0.5 mm² wires. 2 End sleeves: A+ 10.1~10.8, A- 11.1~11.8, B- 12.1~12.8, B+ 13.1~13.8; end crimped with European-style terminals, orange 4.1 (IPW), white 4.2 (EPW).

[0110] 1.5mm 2 The wires and 8 0.5mm 2 The branch joint is connected by a 14-strand twist + wrapping method, covered with copper fastener tape, and consists of 5 layers of 1:3 heat shrink tubing for outer insulation, 1.5mm thick. 2 The ends of the hot busbar are protected by heat-shrinkable end caps, which effectively ensure the branch connection strength, conductivity stability and insulation protection safety.

[0111] Taking a control cabinet with a full complement of 32 I / O modules and redundant power supply modules as an example, the traditional method of installing the device and wiring it in parallel requires 256 wires. The wiring time is generally one week per person, and the reliability of the wiring needs to be verified through a series of tests or vibration tests. The prefabricated wiring harnesses and harness groups used in this example are directly connected to the 24V terminal outlets inside the cabinet. Branch wires 1-8 are fixed to the corresponding positions on the power terminals of the A1-A8, B1-B8, C1-C8, and D1-D8 I / O module PCBs. The branch wires use two colors (red and white) and numbered tubes for visual management, easily distinguishing the 24V positive and negative terminals. This power harness structure allows for connection to all I / O module busbars; a fault in one branch wire only affects one device, preventing the impact of a fault point on the entire control system. This harness group can be integrated offline in batches, saving online integration time. The orange / white color-coded terminals facilitate the differentiation of internal / external 24V redundant power supplies, aiding in visual management and error prevention. This device has very simple operational requirements, effectively avoids quality risks, reduces labor costs, greatly improves cabinet integration, on-site maintenance and repair efficiency, enhances the aesthetics of cabinet cabling, and the integration cost is only 15% of the original daisy-chain parallel technology solution. In certain specific situations, such as nuclear power plants and thermal power plants, where construction windows are typically short and maintenance time is urgent, 24V power supply I / O modules can be expanded and adjusted to improve maintenance or replacement efficiency, stability, and reliability.

[0112] In this example, prefabricated wiring harnesses and harness groups can be completed offline and integrated into the cabinet as needed, saving 60% of cabinet integration time. The connection is stable and reliable, saving 80% of installation space. It is not affected by the different power supply methods of I / O card types (IPW and EPW). The electrical connection and electrical performance are not affected by human factors. Installation is convenient, and the visual wiring and labeling are clear. Offline prefabrication results in a small size, which facilitates on-site maintenance and repair. It greatly improves the efficiency of cabinet integration, on-site maintenance and repair, effectively avoids quality risks, reduces labor costs, and enhances the aesthetics of cabinet cabling.

[0113] Example 3

[0114] This embodiment provides an electronic device, which includes the wiring harness group for powering devices in a cabinet as described in Embodiment 2.

[0115] In this embodiment, a main conductor and multiple branch conductors are connected by a twisted and overlapping winding method. The entire main conductor structure is unbroken, avoiding cable faults caused by multiple connection points, reducing the number of joints, and since only one conductor is connected to the terminal, the diameter of the main conductor can be increased, saving integration time. At the same time, reducing the number of conductors improves integration efficiency, prevents wiring errors, and improves on-site maintenance and repair efficiency. The copper fastener tape and heat shrink tubing effectively ensure the branch connection strength, conductivity stability, and insulation protection safety of the connection parts. The number tube markings and the multiple colors of the wires and tubes improve intuitiveness and visual differentiation. It also offers advantages such as fault tolerance; a faulty branch wire only affects one device, avoiding the impact of the fault point on the entire control system; wire harnesses can be integrated offline in batches, saving online integration time, shortening the manufacturing cycle, reducing costs, and improving quality; prefabricated wire harnesses and wire harness assemblies for power supply to devices inside the cabinet (e.g., 24V) simplify assembly operations, effectively avoid quality risks, reduce labor costs, effectively improve integration efficiency, reduce link failure rate, save cabinet space, ensure stable quality, reduce labor intensity, prevent quality problems and safety hazards caused by human factors, and improve the aesthetics of cabinet cabling.

[0116] While specific embodiments of this disclosure have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this disclosure is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this disclosure, but all such changes and modifications fall within the scope of protection of this disclosure.

Claims

1. A prefabricated wiring harness for powering equipment within a server rack, characterized in that, Each of the prefabricated wire harnesses includes: a main conductor of a first diameter and several branch conductors of a second diameter; wherein the first diameter is greater than or equal to the second diameter; Each of the branch conductors is connected to the main conductor by a twisting and overlapping winding method.

2. The prefabricated wiring harness for powering equipment within a cabinet as described in claim 1, characterized in that, The outside of the knotted portion where the branch conductor and the main conductor are twisted and wrapped is covered with copper fastener tape.

3. The prefabricated wiring harness for powering equipment within a cabinet as described in claim 2, characterized in that, The copper buckle strip is covered with heat shrink tubing to achieve outer insulation, and the length of the heat shrink tubing is greater than the length of the copper buckle strip.

4. The prefabricated wiring harness for powering equipment within a cabinet as described in claim 1, characterized in that, Both the main conductor and the branch conductors have number tube markings at their ends.

5. The prefabricated wiring harness for powering equipment within a cabinet as described in claim 1, characterized in that, Each of the branch wires uses one of a first color and a second color; the first color corresponds to the positive terminal of the power signal, and the second color corresponds to the negative terminal of the power signal.

6. The prefabricated wiring harness for powering equipment within a cabinet as described in claim 1, characterized in that, One end of the main line is used to connect to the power terminal outlet end inside the cabinet, serving as an external port of the main line. The other end of the main line is sealed with a heat-shrink end cap. Each of the branch wires has an external port connected to the power terminal base of the I / O module PCB of the device inside the cabinet.

7. The prefabricated wiring harness for powering equipment within a cabinet as described in claim 1, characterized in that, The external ports of the main conductor and the branch conductors are connected via terminal blocks. The external port of the main line uses one of the third and fourth colors; the third color corresponds to the positive terminal of the power signal, and the fourth color corresponds to the negative terminal of the power signal. The external port of the branch wire uses one of the fifth and sixth colors; the fifth color corresponds to the positive terminal of the power signal, and the sixth color corresponds to the negative terminal of the power signal.

8. A wiring harness for powering equipment within a server rack, characterized in that, Each of the aforementioned wiring harnesses includes a plurality of prefabricated wiring harnesses for powering equipment within the cabinet, as described in any one of claims 1 to 7.

9. The wiring harness for powering equipment within a cabinet as described in claim 8, characterized in that, The wire harness assembly further includes: a braided mesh; The braided mesh covers a portion of the heat shrink tubing located at a first position in the wire harness group and a portion of the main conductor. The length of the heat shrink tubing covered by the braided mesh is greater than or equal to a preset length. The first position is between the external port of the main conductor and the adjacent branch conductor in each main conductor. And / or, The wire harness assembly also includes: cable ties; The prefabricated wire harnesses are arranged accordingly, and the cable tie secures all the wire harnesses in the group at the second position in the group; the second position is the middle of the branch conductors in two adjacent prefabricated wire harnesses. And / or, The wiring harness also includes: PCB power terminals; The prefabricated wire harnesses are arranged accordingly, and the external ports of the branch wires in the same position are connected to the corresponding I / O module PCB power terminal base through the same PCB power terminal.

10. An electronic device, characterized in that, The electronic device includes a wiring harness for powering equipment within a cabinet, as described in any one of claims 8-9.

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