CN215266980U - Power distribution unit - Google Patents

Abstract

The utility model provides a power distribution unit belongs to electrical apparatus technical field. The power distribution unit comprises a shell, an internal main line and a power line; the internal main line is positioned inside the shell; one section of the power line is positioned in the shell and is electrically connected with the internal main line, and the other section of the power line is positioned outside the shell; the power cord is fixedly connected with the shell. The power distribution unit provided by the disclosure is provided with the power line, so that the power distribution unit does not need to perform the plugging work of the power line and the power distribution unit after being installed in place, only needs to perform the plugging work of the power line and the electric equipment, and reduces the field workload and the labor cost. In addition, the power distribution unit does not need to manufacture a terminal socket, and the power line only needs to manufacture a terminal at one end, so that the production cost of the power distribution unit is reduced.

Description

Power distribution unit

Technical Field

The disclosure relates to the technical field of electric appliances, in particular to a power distribution unit.

Background

The PDU (Power Distribution Unit), which may also be called a Power Distribution socket for the cabinet, is used to distribute Power for each electric device in the cabinet, so that the maintenance of the Power in the cabinet is more convenient and reliable.

The PDU of the related art has a plurality of terminal sockets, which are required to be used with a power line. Specifically, the both ends of power cord all have the terminal (or called to connect), and the terminal of power cord one end docks with the terminal socket on the PDU, and the terminal and the consumer butt joint of the other end.

In the related art, in the installation process of the PDU, the PDU is installed in place and then the power line and the PDU are plugged, which undoubtedly increases the workload.

SUMMERY OF THE UTILITY MODEL

The present disclosure provides a power distribution unit, which can solve the technical problems existing in the related art, and the technical scheme of the power distribution unit is as follows:

the present disclosure provides a power distribution unit including a case, an internal main line, and a power line;

the internal main line is located inside the housing;

one section of the power line is positioned inside the shell and is electrically connected with the internal main line, and the other section of the power line is positioned outside the shell;

the power line is fixedly connected with the shell.

In one possible implementation, the power cord includes a cable and a connector;

one end of the cable is electrically connected with the internal main wire, the other end of the cable is connected with the joint, and the cable is fixedly connected with the shell;

the joint is used for being butted with electric equipment.

In one possible implementation, the internal main line includes a main positive line, a main negative line, and a first main ground line;

the cable comprises a branch positive wire, a branch negative wire and a first branch ground wire;

the main positive line is electrically connected with the branch positive line, the main negative line is electrically connected with the branch negative line, and the first main ground wire is electrically connected with the first branch ground wire.

In one possible implementation, the internal main line includes a main zero line, a second main ground line, a first main live line, a second main live line, and a third main live line;

the cable is divided into three groups, and the cable in each group comprises a branch zero line, a second branch ground wire and a branch live wire;

the main zero line is electrically connected with the branch zero lines, the second main ground wire is electrically connected with the second branch ground wire, and the first main live wire, the second main live wire and the third main live wire are respectively electrically connected with the branch live wires in the three groups of cables.

In one possible implementation, the cable is fixedly connected with the shell through a cable clamp tight sealing head;

the cable clamp tightly seals the joint with casing fixed connection, just the cable clamp tightly seals the joint and presss from both sides tightly the cable.

In one possible implementation, the cable clamp tight sealed joint includes a locking body, a clamping ring and a locking cap;

the locking body penetrates through the wall of the shell and is fixedly connected with the shell, the locking body is provided with a through hole which is communicated with the inside and the outside of the shell, and the cable penetrates through the through hole;

the clamping ring is sleeved on the cable and is positioned in the through hole;

the locking cap is sleeved on the cable and fixedly connected with the locking main body, and the locking cap clamps the locking main body, the clamping ring and the cable.

In one possible implementation, the locking body includes a bolt and a limit nut, the bolt including a first external thread portion, an annular projecting portion, a second external thread portion, and a clamping claw portion connected in this order;

the first external thread part is in threaded connection with the limiting nut, and the shell wall of the shell is limited between the limiting nut and the annular bulge part;

the second external thread part is in threaded connection with the locking cap;

the clamping claw portion comprises a plurality of clamping claws extending along the axial direction of the bolt, the clamping claws are distributed at intervals along the circumferential direction of the bolt, the clamping ring is located between the clamping claws, and the locking cap pushes the clamping claws to clamp the clamping ring.

In one possible implementation, the locking cap comprises an internal threaded portion and a tapered portion in communication;

the internal thread part is in threaded connection with the locking main body;

the tapered portion has an inner diameter that gradually decreases in a direction away from the internal threaded portion, and the tapered portion clamps the locking body, the clamping ring, and the cable.

In a possible implementation manner, the locking body and the locking cap are made of plastic, and the clamping ring is made of rubber.

In one possible implementation, a length of a section of the power line located outside the housing is greater than 1m and less than 2 m.

The technical scheme provided by the disclosure at least comprises the following beneficial effects:

the power distribution unit provided by the disclosure is provided with a power line, and the power line is directly connected with an internal main line. After the power distribution unit is installed in place, the power line and the power distribution unit do not need to be plugged, and only the power line and the electric equipment need to be plugged, so that the field workload and the labor cost are reduced.

In addition, the power distribution unit eliminates a terminal socket, so that the power distribution unit does not need to be provided with the terminal socket, and the power line only needs to be provided with the terminal at one end, thereby reducing the production cost of the power distribution unit.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. In the drawings:

FIG. 1 is a schematic diagram of a power distribution unit shown in an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of a power distribution unit shown in an embodiment of the present disclosure;

fig. 3 is a schematic diagram illustrating an internal structure of a power distribution unit according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram illustrating an internal structure of a power distribution unit according to an embodiment of the present disclosure;

fig. 5 is a partial schematic structure diagram of a power distribution unit according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural view of a cable clamp tight sealing head according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural view of a locking body shown in an embodiment of the present disclosure;

FIG. 8 is a schematic structural view of a locking body and a clamping ring according to an embodiment of the disclosure;

fig. 9 is a schematic structural view of a locking cap according to an embodiment of the present disclosure;

fig. 10 is a partial schematic view of a power distribution unit shown in an embodiment of the present disclosure.

Description of the figures

1. A housing;

11. a power supply wire inlet hole;

12. an incoming line junction box;

13. fixing the panel;

14. an operation indicator light;

2. an internal main line;

21. a main positive wire 22, a main negative wire 23 and a first main ground wire;

24. a main zero line 25, a second main ground line 26, a first main live line 27, a second main live line 28 and a third main live line;

3. power line, 31, cable, 32, connector;

311. a branch positive line 312, a branch negative line 313, a first branch ground line;

314. a branch zero line 315, a second branch ground line 316 and a branch live line;

4. tightly sealing the joint by a cable clamp;

41. a locking body 410, a through hole 411, a bolt 4111, a first external thread portion 4112, an annular convex portion 4113, a second external thread portion 4114, a clamping claw portion 4115, a clamping claw 412 and a limit nut;

42. a clamping ring;

43. locking cap, 431, internal thread portion, 432, toper portion.

With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

The PDU (Power Distribution Unit) is a Power Distribution socket for a cabinet produced by an industrial standard, and the Power Distribution Unit is a product designed to provide Power Distribution for electrical equipment installed in the cabinet, has various series specifications of different functions, installation modes and different insertion combinations, and can provide a suitable rack-mounted Power Distribution solution for different Power environments. The power distribution unit can ensure that the power distribution in the cabinet is more orderly, reliable, safe, professional and beautiful, and greatly improves the convenience and reliability of power maintenance in the cabinet.

The related art power distribution unit outputs a C13 terminal socket (or called a jack), and when the power distribution unit supplies power to the electric device, a power line with plugs at two ends as C13 terminals is needed, one end of the power line is plugged into the C13 terminal socket of the power distribution unit, and the other end of the power line is plugged into the electric device, so that the power distribution unit supplies power to the electric device.

In the installation process, after the power distribution unit is installed in place, the power line and the power distribution unit need to be separately plugged, so that the field workload is undoubtedly increased, and the labor cost is increased.

In addition, when the power distribution unit and the power line are manufactured, terminal sockets need to be manufactured on the power distribution unit, and terminals need to be manufactured at two ends of the power line, so that the production cost is additionally increased.

In view of the above technical problems, the embodiments of the present disclosure provide a power distribution unit, which can solve the above technical problems.

The disclosed embodiment provides a power distribution unit, as shown in fig. 1 to 4, including a case 1, an internal main line 2, and a power supply line 3. The internal main line 2 is located inside the case 1. One section of the power cord 3 is located inside the housing 1 and electrically connected to the internal main cord 2, and the other section is located outside the housing 1. The power cord 3 is fixedly connected with the housing 1.

The housing 1 is used for protecting and supporting the rest of the components of the power distribution unit, and the internal main line 2 is the main component for power transmission and distribution inside the power distribution unit.

The power cord 3 is an important medium for connecting the internal main cord 2 with the electric equipment, and the power cord 3 is directly led out from the shell 1 and can be preformed in a factory. The power cord 3 is electrically connected to the internal main cord 2, so that the power cord 3 can take electricity from the internal main cord 2. The power line 3 is fixedly connected with the shell 1, and the stress point is located at the joint of the power line 3 and the shell 1, so that the power line 3 is prevented from being disconnected from the inner main line 2 when the power line 3 is stressed. In some examples, the power distribution unit includes a plurality of power supply lines 3.

The power distribution unit provided by the embodiment of the present disclosure has a power line 3, and the power line 3 is directly connected to the internal main line 2. After the power distribution unit is installed in place, the power line 3 and the power distribution unit do not need to be plugged, and only the power line 3 and the electric equipment need to be plugged, so that the field workload is reduced, and the labor cost is reduced.

In addition, the power distribution unit eliminates a terminal socket, so that the power distribution unit does not need to be provided with the terminal socket, and the power line 3 only needs to be provided with a terminal at one end, thereby reducing the production cost of the power distribution unit.

In some examples, as shown in fig. 1-4, the power cord 3 includes a cable 31 and a connector 32. One end of the cable 31 is electrically connected to the internal main line 2, the other end is connected to the connector 32, and the cable 31 is fixedly connected to the housing 1. The connector 32 is used for interfacing with a powered device.

The connector 32 may also be referred to as a terminal or plug, etc., such as a C13 terminal, among others.

The length of the power line 3 is not limited in the embodiments of the present disclosure, and in some examples, a length of a section of the power line 3 located outside the housing 1 is greater than 1m and less than 2m, and may be 1.5m, for example.

The embodiment of the present disclosure does not limit the implementation manner of electrically connecting the power line 3 and the internal main line 2, and in some examples, the cable 31 of the power line 3 is wound around the internal main line 2 and clamped by a copper clamp. In addition, the outside of the connecting part can be sleeved with an insulating sheath to improve the safety of electric connection.

In the following, the power distribution unit is taken as a dc power distribution unit and an ac power distribution unit, respectively, and a more detailed exemplary description is given:

as shown in fig. 3, the power distribution unit is a direct current power distribution unit, and the internal main line 2 includes a main positive line 21, a main negative line 22, and a first main ground line 23. Cable 31 includes a branch positive line 311, a branch negative line 312, and a first branch ground line 313. The main positive electrode 21 is electrically connected to the branch positive electrode line 311, the main negative electrode line 22 is electrically connected to the branch negative electrode line 312, and the first main ground line 23 is electrically connected to the first branch ground line 313.

The main positive line 21, the main negative line 22, and the first main ground line 23 take power from connection terminals in the junction box of the power distribution unit, and output power to the electric devices through the branch positive line 311, the branch negative line 312, and the first branch ground line 313. The outer parts of the branch positive wire 311, the branch negative wire 312 and the first branch ground wire 313 are sleeved with cable sheaths.

It should be noted that fig. 3 may also be regarded as an ac power distribution unit, in which case the main positive line 21, the main negative line 22 and the first main ground line 23 are respectively a main live line, a main neutral line and a main ground line, and the branch positive line 311, the branch negative line 312 and the first branch ground line 313 are respectively a branch live line, a branch ground line and a branch ground line.

That is, when the power distribution unit shown in fig. 3 introduces a direct current, the power distribution unit is a direct current power distribution unit; and when single-phase alternating current is introduced, the power supply units are alternating current power supply distribution units.

As shown in fig. 4, the power distribution unit is an ac power distribution unit, and the internal main line 2 includes a main neutral line 24, a second main ground line 25, a first main live line 26, a second main live line 27 and a third main live line 28. The cable 31 is plural, and the plural cables 31 are divided into three groups (A, B and C shown in fig. 4), and the cables 31 in each group include a branch neutral wire 314, a second branch ground wire 315, and a branch live wire 316. The main neutral conductor 24 is electrically connected to the branch neutral conductor 314, the second main ground conductor 25 is electrically connected to the second branch ground conductor 315, and the first main live conductor 26, the second main live conductor 27, and the third main live conductor 28 are electrically connected to the branch live conductors 316 of the three sets of cables 31, respectively.

The main neutral wire 24, the second main ground wire 25, the first main live wire 26, the second main live wire 27 and the third main live wire 28 take power from the connection terminals in the junction box of the power distribution unit and output power to the consumer through the branch neutral wire 314, the second branch ground wire 315 and the branch live wire 316. The branch neutral conductor 314, the second branch ground conductor 315 and the branch live conductor 316 are externally looped around a cable sheath.

The plurality of power cords 3 can be divided into A, B and C groups, and the branch neutral wire 314, the second branch ground wire 315 and the branch live wire 316 in the A group of power cords 3 are electrically connected with the main neutral wire 24, the second main ground wire 25 and the first main live wire 26 in the internal main wire 2 respectively; the branch zero line 314, the second branch ground line 315 and the branch live line 316 of the group B power line 3 are electrically connected with the main zero line 24, the second main ground line 25 and the second main live line 27 of the internal main line 2, respectively; the branch neutral conductor 314, the second branch ground conductor 315 and the branch live conductor 316 of the group C power cord 3 are electrically connected to the main neutral conductor 24, the second main ground conductor 25 and the third main live conductor 28 of the internal main cord 2, respectively.

That is, the power distribution unit provided by the embodiment of the present disclosure introduces three-phase ac power and outputs single-phase ac power through the power line 3.

The implementation manner of the fixed connection between the cable 31 and the housing 1 is not limited in the embodiment of the disclosure, and the cable 31 may be directly connected to the housing 1 or indirectly connected to the housing through a fixing member. In the following, the implementation of the indirect connection of the cable 31 and the housing 1 via the fixing member is exemplarily described:

in some examples, as shown in fig. 5, the cable 31 is fixedly connected with the housing 1 by a cable clamp tight sealing fitting 4. The cable clamp tight seal 4 is fixedly connected with the housing 1 and the cable clamp tight seal 4 clamps the cable 31. The cable clamp sealing joint 4 may also be referred to as a screw-on fastening nut, a cable sealing joint, or the like.

Illustratively, as shown in fig. 6, the cable clamp tight sealed fitting 4 includes a locking body 41, a clamping ring 42, and a locking cap 43. The locking body 41 penetrates through a wall of the housing 1 and is fixedly connected with the housing 1, the locking body 41 has a through hole 410, the through hole 410 communicates the inside and the outside of the housing 1, and the cable 31 passes through the through hole 410. The clamping ring 42 is looped around the cable 31 and is located in the through hole 410. The locking cap 43 is sleeved on the cable 31 and fixedly connected with the locking body 41, and the locking cap 43 clamps the locking body 41, the clamping ring 42 and the cable 31.

The locking body 41 and the locking cap 43 may be made of plastic (such as nylon), and the clamping ring 42 may be made of rubber.

Next, specific structures of the locking body 41 and the locking cap 43 are exemplified:

as shown in fig. 7 and 8, the locking body 41 includes a bolt 411 and a stopper nut 412, and the bolt 411 includes a first male thread portion 4111, an annular protrusion portion 4112, a second male thread portion 4113, and a clamping claw portion 4114, which are connected in this order. The first external thread portion 4111 is in threaded connection with the limiting nut 412, and the wall of the housing 1 is limited between the limiting nut 412 and the annular protrusion portion 4112. The second externally threaded portion 4113 is threadedly coupled to the locking cap 43. The clamping jaw portion 4114 includes a plurality of clamping jaws 4115, the clamping jaw 4115 extends in the axial direction of the bolt 411, the plurality of clamping jaws 4115 are spaced apart along the circumferential direction of the bolt 411, the clamping ring 42 is located between the plurality of clamping jaws 4115, and the locking cap 43 pushes the plurality of clamping jaws 4115 to clamp the clamping ring 42.

As shown in fig. 9, the locking cap 43 includes an internally threaded portion 431 and a tapered portion 432 connected thereto. The female screw portion 431 is screwed with the lock body 41. The tapered portion 432 has an inner diameter that gradually decreases in a direction away from the internal thread portion 431, and the tapered portion 432 clamps the locking body 41, the clamping ring 42, and the cable 31.

In the installation process, the bolt 411 is first inserted through the housing, and the limit nut 412 is screwed to the first external thread portion 4111 inside the housing, so that the fixed connection between the locking body 41 and the housing 1 is completed.

The clamping ring 42 and the locking cap 43 are looped over the cable 31, and the cable 31 is passed through the through-hole 410 of the locking body 41.

The cable 31 is electrically connected to the inner main wire 2, and then the clamping ring 42 is positioned between the plurality of clamping claws 4115. Thereafter, the locking cap 43 is rotated so that the locking cap 43 is threadedly connected with the second externally threaded portion 4113. In this process, the inner wall of the tapered portion 432 of the locking cap 43 gradually pushes the plurality of clamping jaws 4115 together and clamps the locking ring 42. After the locking cap 43 is screwed with the second threaded portion 4113, the cable 31 is fixed to the housing 1.

Hereinafter, the structure of the housing 1 of the power distribution unit provided by the embodiment of the present disclosure is exemplarily explained in more detail:

as shown in fig. 10, the housing 1 has a power supply wire inlet hole 11, a wire inlet junction box 12, a fixing panel 13, and an operation indicator lamp 14.

The power inlet hole 11 is located at the end of the housing 1 and is a passage for the inlet cable of the superior power distribution system to enter the power distribution unit. The power supply wire inlet hole 11 can also be provided with a cable clamp tight sealing joint to realize the fixed connection of the wire inlet cable and the shell 1, thereby ensuring that the wire inlet cable is fastened without loosening after entering the power supply distribution unit.

The inlet wire terminal box 12 is communicated with the power supply inlet wire hole 11, and a wiring terminal is arranged inside the inlet wire terminal box and is used for being electrically connected with an inlet wire cable. The cover plate of the incoming line junction box 12 may be made of transparent PC (polycarbonate) to facilitate thermal imaging scanning.

The fixing panels 13 are used for fixing the whole power distribution unit, and may be two, and the two fixing panels 13 are respectively located at two ends of the power distribution unit.

The operation indicator 14 can feed back the operation status of the power distribution unit, and can be electrically connected with the live wire in the power distribution unit.

The installation logic of the power distribution unit is as follows:

the incoming line cable from the upper-level power distribution system such as a power distribution row head cabinet enters the incoming line junction box 12 from the power supply incoming line hole 11, and the incoming line cable is fixedly pressed with the shell 1 through the cable clamp tight sealing joint. The incoming line cable is connected with the wiring terminal through an air switch and the like in the incoming line junction box 12, the wiring terminal is electrically connected with the internal main line 2, and the internal main line 2 is electrically connected with the power line 3. Thus, a complete power supply link from the incoming cable to the power supply line 3 is formed.

The above description is only for the purpose of illustrating the preferred embodiments of the present disclosure and is not to be construed as limiting the present disclosure, but rather as the subject matter of the present disclosure is to be accorded the full scope and breadth of the present disclosure.

Claims (10)

1. A power distribution unit, characterized in that it comprises a casing (1), an internal main line (2) and a power supply line (3);

the internal main line (2) is located inside the housing (1);

one section of the power line (3) is positioned inside the shell (1) and is electrically connected with the internal main line (2), and the other section of the power line is positioned outside the shell (1);

the power line (3) is fixedly connected with the shell (1).

2. Power distribution unit according to claim 1, wherein the power cord (3) comprises a cable (31) and a connector (32);

one end of the cable (31) is electrically connected with the internal main line (2), the other end of the cable is connected with the joint (32), and the cable (31) is fixedly connected with the shell (1);

the connector (32) is used for being connected with electric equipment in a butt joint mode.

3. Power distribution unit according to claim 2, wherein the internal main line (2) comprises a main positive line (21), a main negative line (22) and a first main ground line (23);

the cable (31) comprises a branch positive wire (311), a branch negative wire (312) and a first branch ground wire (313);

the main positive wire (21) is electrically connected with the branch positive wire (311), the main negative wire (22) is electrically connected with the branch negative wire (312), and the first main ground wire (23) is electrically connected with the first branch ground wire (313).

4. Power distribution unit according to claim 2, wherein the inner main line (2) comprises a main neutral line (24), a second main earth line (25), a first main live line (26), a second main live line (27) and a third main live line (28);

the number of the cables (31) is multiple, the multiple cables (31) are divided into three groups, and the cables (31) in each group comprise branch zero wires (314), second branch ground wires (315) and branch live wires (316);

the main zero line (24) is electrically connected with the branch zero line (314), the second main ground wire (25) is electrically connected with the second branch ground wire (315), and the first main live wire (26), the second main live wire (27) and the third main live wire (28) are respectively electrically connected with the branch live wires (316) in the three groups of cables (31).

5. Power distribution unit according to any of claims 2-4, wherein the cable (31) is fixedly connected to the housing (1) by means of a cable clamp tight closure (4);

the cable clamp tightly seals joint (4) with casing (1) fixed connection, just cable clamp tightly seals joint (4) and presss from both sides tightly cable (31).

6. Power distribution unit according to claim 5, wherein the cable clamp tight sealing head (4) comprises a locking body (41), a clamping ring (42) and a locking cap (43);

the locking body (41) penetrates through the wall of the shell (1) and is fixedly connected with the shell (1), the locking body (41) is provided with a through hole (410), the through hole (410) is communicated with the inside and the outside of the shell (1), and the cable (31) penetrates through the through hole (410);

the clamping ring (42) is sleeved on the cable (31) and is positioned in the through hole (410);

the locking cap (43) is sleeved on the cable (31) and fixedly connected with the locking main body (41), and the locking cap (43) clamps the locking main body (41), the clamping ring (42) and the cable (31).

7. The power distribution unit according to claim 6, wherein the locking body (41) comprises a bolt (411) and a limit nut (412), the bolt (411) comprising a first male thread portion (4111), an annular protrusion portion (4112), a second male thread portion (4113), and a clamping claw portion (4114) connected in this order;

the first external thread part (4111) is in threaded connection with the limit nut (412), and the shell wall of the shell (1) is limited between the limit nut (412) and the annular convex part (4112);

the second external thread part (4113) is in threaded connection with the locking cap (43);

the clamping jaw portion (4114) comprises a plurality of clamping jaws (4115), the clamping jaws (4115) extend in the axial direction of the bolt (411), the plurality of clamping jaws (4115) are distributed at intervals in the circumferential direction of the bolt (411), the clamping ring (42) is located between the plurality of clamping jaws (4115), and the locking cap (43) pushes the plurality of clamping jaws (4115) to clamp the clamping ring (42).

8. The power distribution unit according to claim 6, wherein the locking cap (43) comprises a connected internal threaded portion (431) and a tapered portion (432);

the female screw portion (431) is screwed with the locking body (41);

the tapered portion (432) has an inner diameter that gradually decreases in a direction away from the internal threaded portion (431), and the tapered portion (432) clamps the locking body (41), the clamping ring (42), and the cable (31).

9. Power distribution unit according to claim 6, wherein the locking body (41) and the locking cap (43) are made of plastic and the clamping ring (42) is made of rubber.

10. Power distribution unit according to any of claims 1-4, wherein a length of a section of the power supply line (3) outside the housing (1) is larger than 1m and smaller than 2 m.

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