JP2019176569A - Feed-in connection structure for bus duct - Google Patents

Abstract

To provide a feed-in connection structure for electrically connecting a power source and a bus bar in a bus duct via a feed-in conductor, in which the feed-in connection structure is formed into a more compact structure so that the processability, handleability, and workability of the feed-in connection structure are enhanced.SOLUTION: A feed-in connection structure includes a feed-in conductor which is electrically connected to a power source supply unit, a bus bar 18 which is included in a housing of a bus duct 16, and a plurality of connection conductors electrically connecting the feed-in conductor to the bus bar 18. The bus bar 18 has a separated region separated at an electrically connected portion of the feed-in conductor. The feed-in conductor is disposed in the inside of the separated region or to a portion near the separated region so as to be substantially flush with the bus bar 18, and is electrically connected via the connection conductors.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a feed-in connection structure for a bus duct, and more particularly to a feed-in connection structure for a bus duct that electrically connects a feed-in conductor and a bus duct.

  In recent years, there has been an increasing demand for installing bus ducts in computer rooms and data centers. In such an indoor space, a large number of electronic devices such as power supply devices, electronic devices, and servers are accommodated and arranged in a rack such as a rack. By providing a bus duct along with the arranged electronic devices, it is possible to provide flexible power distribution to each load of the arranged electronic devices.

  A feed-in unit is used to supply electric power to the bus duct provided therewith. The feed-in unit has a feed-in conductor connected to the cable and a connecting member for connecting the feed-in conductor to a bus bar included in the bus duct in order to supply electric power. Here, the feed-in unit includes an end feed-in unit connected to the terminal end of the bus duct and an intermediate feed-in unit connected to the middle of the bus duct.

  Patent Document 1 discloses a structure of an end feed-in unit, and shows a unit structure in which a bus bar and a feed-in conductor are brought into contact with each other at a terminal end portion of a bus duct and connected by a connecting member.

  Patent Document 2 discloses a box structure of an intermediate feed-in unit, in which a protrusion is provided on a bus bar in the middle of a bus duct, the protrusion is exposed through a housing opening of the bus duct, and feed-in to the protrusion is performed. The structure for mounting the unit box is shown.

No. 49-22495 JP 2009-284642 A

  In the end feed-in unit of Patent Document 1, the connection portion between the cable and the bus bar is configured to be a large-sized one in which a plate-like terminal piece, a conductor exposed portion, and an insulating interposed piece are collectively tightened with bolts. Yes.

  When power is supplied by the intermediate feed-in unit described in Patent Document 2, it is necessary to provide a protruding portion (convex portion) through the housing opening in the bus bar, and there is a concern that manufacturing takes time and costs increase. In addition, since it becomes a large unit in both weight and size, construction is troublesome especially in an indoor space such as a server room.

  Furthermore, in the intermediate feed-in unit described in Patent Document 2, the feed-in box is bulky in the extending direction of the bus duct, and it is difficult to attach an electronic device around the feed-in box.

  The present invention has been made in view of the above problems, and its purpose is to make the feed-in connection structure for electrically connecting the bus bar in the bus duct and the power source through the feed-in conductor more compact. An object of the present invention is to provide a feed-in connection structure with improved workability, handling and workability of the feed-in connection structure.

The feed-in connection structure of the bus duct according to claim 1 for solving the above-described problem,
A feed-in conductor electrically connected to the power supply unit, a bus bar contained in a housing of a bus duct, and a plurality of connection conductors that electrically connect the feed-in conductor and the bus bar, The bus bar has a separated region separated at a portion where the feed-in conductor is electrically connected, and the feed-in conductor is disposed on or substantially in the same plane as the bus bar in or near the separated region. It is electrically connected by the connection conductor.

  According to this configuration, since the feed-in conductor and the bus bar are electrically connected on substantially the same plane, the structure of the connection portion of the feed-in conductor becomes compact as a whole. Therefore, the workability, handleability and workability of the feed-in connection structure are improved. Furthermore, since the feed-in connection structure is made compact, good wiring is possible in a situation where electronic devices such as a recent data center are arranged in the vicinity of the bus duct.

The feed-in connection structure of the bus duct according to claim 2 is the feed-in connection structure of the bus duct according to claim 1,
The feed-in conductor has a size smaller than the separation distance of the separation region of the bus bar in the extending direction of the bus bar, and is inserted and arranged in the separation region. It is electrically connected.

  According to this configuration, the feed-in conductor is electrically connected on the same plane as the bus bar at the portion to which the feed-in conductor is connected, and is inserted into a separation region between the separated bus bars. Since it is disposed, the structure of the connection portion of the feed-in conductor is further saved.

The feed-in connection structure for a bus duct according to claim 3 is the feed-in connection structure for a bus duct according to claim 1,
The feed-in conductor has a dimension larger than the separation distance of the separation region of the bus bar in the extending direction of the bus bar, and is disposed outside the separation region and electrically connected to the bus bars on both sides by the connection conductor. It is connected to.

  According to this configuration, the feed-in conductor is configured to have a dimension (width length) larger than the above-described separation distance, and is not inserted into the separation region, but is inserted between the bus bars and the connection conductors on both sides in the vicinity of the separation region. It can be easily connected. Therefore, the connecting operation of the bus bar and the feed-in conductor on substantially the same plane can be easily performed without performing precise positioning.

The feed-in connection structure of the bus duct according to claim 4 is the feed-in connection structure of the bus duct according to any one of claims 1 to 3,
The housing of the bus duct is formed in a substantially rectangular cross section, has an opening surface provided with an opening in a portion covering the separation region, and both outer surfaces substantially orthogonal to the opening surface of the housing have rigidity. A side cover member is fixed along the extending direction of the bus duct, the feed-in conductor is housed in a box case having an opening surface provided with an opening, and the box case covers the opening surface of the box case. Both end surface members installed opposite to the opening surface of the bus duct housing and constituting both end surfaces of the box case in the extending direction of the bus duct are respectively fixed to the side cover members of the bus duct housing. Features.

  According to this configuration, the end face members on both sides of the box case and the rigid side cover members fixed on both outer side surfaces of the bus duct housing are connected to each other at the connection portion between the feed-in conductor and the bus bar. Therefore, the connection of the box case to the bus duct is strengthened, the strength of the feed-in connection structure is improved, and a reliable power supply is possible.

The feed-in connection structure for a bus duct according to claim 5 is the feed-in connection structure for a bus duct according to claim 4,
The both end surface members of the box case are configured to be removable from the box case.

  According to this configuration, the both end surface members of the box case can be removed from the box case at the connection portion between the feed-in conductor and the bus duct. Can be secured, and wiring from the power supply section to the feed-in conductor can be easily performed. In addition, visual confirmation of the wiring after the feed-in conductor is installed becomes easy.

  According to the feed-in connection structure of the bus duct of the present invention, in the configuration in which the feed-in conductor is connected to the bus bar in the middle of the bus duct, the feed-in connection structure is made compact, thereby improving the workability, handleability, and workability. be able to. As a result, a larger space can be secured in an environment where there are many connecting devices for branching in the bus duct installation area, such as a data center, and workability such as connection work and maintenance inspection is improved.

It is explanatory drawing which concerns on the 1st Embodiment of this invention and shows the connection state of a feed-in conductor and a bus-bar. It is explanatory drawing which shows the structure of the bus duct in the connection part of a bus-bar and a feed-in conductor. It is explanatory drawing regarding the framework of a box case. It is an expansion perspective view of a connection member. It is explanatory drawing regarding attachment to the bus duct of the assembled box case. It is explanatory drawing of the state in which the feed-in conductor and the bus-bar were connected by the connection conductor. FIG. 7 is a cross-sectional view taken along line AA in FIG. 6 in which a feed-in conductor and a bus bar are connected by a connection conductor, and shows four phases. It is explanatory drawing which shows a mode that an end surface member is attached to the width direction both outer sides of a feed-in conductor, after setting a connection conductor and a bus bar as the state electrically connected with respect to each bus bar. It is explanatory drawing regarding interference with the operation pin and end surface member of a connection member. It is explanatory drawing of the modification which concerns on the connection of a feed-in conductor and a bus-bar. It is explanatory drawing of the modification which concerns on the connection part of a feed-in conductor. It is explanatory drawing regarding another procedure of the connection method of the frame of a box case, and a connection member. It is explanatory drawing about the case where it concerns on the 2nd Embodiment of this invention and it applies to an insulation contact type bus duct.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(First embodiment)
A first embodiment of a feed-in connection structure according to the present invention will be described with reference to FIGS. The feed-in connection structure of the present invention is realized by electrical connection between the feed-in conductor and the bus bar. Each figure exemplifies the embodiment of the present invention, and does not limit the scope of rights. Also, the design of the bus duct, the installation direction, the installation position of the feed-in unit, and the installation direction. However, the direction of entry is not limited.

  FIG. 1 is an explanatory diagram illustrating a connection state between a feed-in conductor and a bus bar according to the first embodiment. The feed-in conductor is included in the feed-in unit 10 and is connected to the middle of the extending direction (extending direction) of the bus duct 16 including the bus bar 18. This connecting portion is denoted by reference numeral 14. Here, the middle means an intermediate part other than the end of the bus duct, and is not limited to just the middle of the bus duct.

  FIG. 2 is an explanatory diagram showing the configuration of the bus duct 16 in the connecting portion 14 between the bus bar and the feed-in conductor. As shown in FIG. 2, the bus duct 16 is surrounded by a housing made up of an upper channel material 20 and a lower channel material 22. Inside, a bus bar 18 is provided for each phase. A substantially rectangular notch 21 is provided at the end of the upper channel member 20 of the housing, the ends of the bus duct 16 are butted against the bottom cover member 26, and are connected together via a joint plate (not shown). An opening 52 for connecting the feed-in conductor is formed.

  In the connection portion 14, a pair of side surface cover members 28 are further disposed and reinforced on the side of the bottom surface cover member 26. The side cover member 28 is fastened to the bottom cover member 26 or the side surface of the upper channel member 20 of the bus duct 16, and is configured to be substantially the same as or longer than the length of the bottom cover member 26. A flange portion 28a is provided at each of the end portions of the bus duct 16 in the vertical direction, and serves as a substantially U-shaped reinforcing material.

  The flange portion 28a on the opening 52 side can be used for the connection of the box case 12 as will be described later, and the flange portion 28a on the other end can be appropriately fixed to the support of the bus duct 16. For example, when the bus duct 16 is mounted on a server rack or the like, it can be fixed to the server rack or the like by the flange portion 28a at the other end.

  FIG. 3 is an explanatory diagram relating to the framework of the box case 12. A feed-in conductor 30 is accommodated in the box case 12. The feed-in conductor 30 includes a feed-in end 30a that is connected to a cable (not shown) from the power supply unit, and a feed-out end 30b that is connected to the bus bar. The feed-in conductor 30 is formed by appropriately stepping the above-described configuration for each phase, and the phases are overlapped with an insulating spacing member 36 interposed therebetween, and fastened using screws 38 and 39. Are configured as a single unit.

  The feed-in end 30a is separated by a distance that can sufficiently secure a required spatial distance when connected to the cable, and the feed-out end 30b is substantially the same as the bus bar separation distance. As shown in the figure, each phase is appropriately stepped so as to be substantially evenly spaced. The feed-in conductor 30 is stepped in a direction orthogonal to the width direction.

  The feed-in conductor 30 that has been fastened together is further fastened with the side members 32 from both outer sides where the feed-in conductors 30 are overlapped. The side surface member 32 has a bottom surface portion 32a. Since the side member 32 can be attached to a place where the solid base structure is completed by fastening the feed-in conductors 30 at once, labor for assembling the box case 12 is greatly saved. The

  A shield plate (not shown) having a hole for drawing a cable from a power supply source into the box case 12 is attached to the upper portion of the frame member 34 at the upper portion of the box case 12. The frame member 34 is attached to an upper end portion facing the bottom surface portion 32 a side of the side member 32, and forms an upper frame of the box case 12. It can be appropriately assembled by screws, rivets or the like not shown. A cable is drawn into the box case 12 from the hole of the shielding plate and connected to the feed-in end 30a.

  Two connecting members 40 are disposed on the feed-out end portion 30 b of the feed-in conductor 30 so as to be sandwiched from both ends in the width direction of the feed-in conductor 30. FIG. 4 is an enlarged perspective view of the connection member 40. The connection member 40 includes a connection conductor 46 that electrically connects the bus bars inside a box-like body 42 formed of an insulating material.

  A plurality of substantially rectangular internal spaces 44 are provided in the box-like body 42, and a pair of connection conductors 46 are included in the internal spaces 44. The substantially rectangular internal space 44 is provided with a slit 48 so that the bus bar can be easily inserted, and the bus bar is inserted into the slit 48 so as to be in electrical contact with one end of the connection conductor 46. Has been. The connection conductor 46 is a contact plate-like metal member, and is biased by a spring (not shown) so that the pair of connection conductors 46 are sandwiched between each other.

  An operation pin 50 is interposed between the pair of connection conductors 46. By operating the operation pin 50, the separation distance of the connection conductor 46 can be controlled, and the crimping between the connection conductor 46 and the bus bar is operated. The operation pin 50 includes a shaft portion 50b that separates the connection conductor 46, and a grip portion 50a for rotating the shaft portion 50b. The shaft portion 50b of the operation pin 50 has a rod-like structure having a substantially elliptical cross-sectional structure having a short diameter and a long diameter. The operation pin 50 may be made of an insulating member, and may be coated with an insulating material around a hard core material such as metal.

  When the operation pins 50 are sandwiched between the connection conductors 46, the distance between the connection conductors 46 is determined by the length of the operation pins 50 that are sandwiched. Since the operation pin 50 is provided with the gripping portion 50a, it is possible to select the case of being pinched with a long diameter and the case of being pinched with a short diameter by rotating the shaft portion 50b. In this way, the separation distance of the connection conductor 46 is controlled by the turning operation of the operation pin 50.

  Since the short diameter is shorter than the thickness of the bus bar and the long diameter is longer than the thickness of the bus bar, when the connecting conductor 46 is spaced apart with the long diameter, the distance between the connecting conductors 46 is longer than the thickness of the bus bar. Therefore, the bus bar can be easily inserted into or removed from the connection conductor 46. On the contrary, when the connection conductor 46 is separated with a short diameter, the separation distance of the connection conductor 46 is shorter than the thickness of the bus bar, so that the bus bar cannot be inserted and removed between the connection conductors 46.

  Although the operation pin 50 is configured to be separable from the connection member 40, the operation pin 50 may be configured to be provided integrally with the connection member 40 so that it cannot be separated. Since the connection conductor 46 is urged at substantially the center of the connection plate, the operation pins 50 are interposed at both ends with the substantially central urging portion as the center, so that both ends of the connection conductor 46 are individually electrically connected to the bus bar. Can be operated.

  Therefore, the connection member 40 is disposed on both sides of the feed-in conductor 30 in the width direction, and the connection member 40 may be sandwiched in advance at the feed-out end 30b by operating the operation pin 50 on the feed-in conductor 30 side. it can. At this time, the operation pin 50 on the feed-in conductor 30 side is removed, and the outer operation pin 50 remains.

  The connection member 40 attached to the feedout end 30b is protected by attaching an insulating sheet (not shown). If at least a part of the connection portion between the connection member 40 and the feed-in conductor 30 is covered, the risk of displacement of the connection conductor 46 with respect to the feed-in conductor 30 can be relatively alleviated. Further, since the risk of detachment during construction of the connection member 40 itself can be alleviated, it is possible to smoothly assemble the feed-in unit 10, which is preferable. The insulating sheet may be a cover body that can protect the connection member 40 in an auxiliary manner. The insulating sheet is not limited to an insulating material, and may be made of metal, and may be covered separately from the housing. Further, part or all of the connection member 40 may be covered.

  FIG. 5 is an explanatory diagram regarding attachment of the assembled box case 12 to the bus duct 16. After the basic framework of the box case 12 is completed, the feedout end 30b is inserted into the opening 52 of the bus duct 16. Two connecting members 40 are assembled in advance at the feed-out end portion 30b, but the opposing bus bar 16 is just accommodated in the slit 48 of the box-like body 42 of the connecting member 40. The connection between the out end 30b and the bus bar 18 can be easily performed. Further, with such a configuration, the box case 12 is not bulky in the extending (extending) direction of the bus bar 16.

  FIG. 6 is an explanatory view showing a state in which the feed-in conductor 30 and the bus bar 16 are connected by the connection conductor 46. The connection conductor 46 to be included is illustrated in an explanatory view of one phase partly excluding the outside of the box-like body 42 of the connection member 40. While the bus bar 16 is disposed at a predetermined distance, the feed-in conductor 30 is disposed, and two portions between the feed-in conductor 30 and the bus bar 16 are connected by a pair of connection conductors 46, respectively. . The pair of connection conductors 46 are arranged in two for each phase in accordance with the parallel arrangement of each phase of the bus bar, but this is not a limitation, and one or three or more of each phase may be used.

  Since the connections of the bus bars 16 arranged at both ends of the feed-in conductor 30 are independent, it is possible to use only one connection and not the other connection. It is also possible to easily construct the other connection separately from the one constructed only, and the structure is very flexible from the viewpoint of construction and use without reducing the insulation distance between adjacent bus bars 18 It is.

  FIG. 7 is a cross-sectional view taken along line AA in FIG. 6 in which the feed-in conductor 30 and the bus bar 16 are connected by the connection conductor 40, and shows four phases. The feed-in conductor 30 is inserted between the bus bars 18 facing each other, and the feed-in conductor 30 and the bus bar 18 are electrically connected by the connection conductor 46. The separation distance of each phase is not narrowed because the feed-in conductor 30 and the bus bar 18 are connected without overlapping.

  Therefore, according to this configuration, since the feed-in conductor 30 and the bus bar 18 are electrically connected on substantially the same plane, the structure of the connection portion 14 of the feed-in conductor 30 becomes compact as a whole. Furthermore, it is easy to secure the insulation distance between the bus bars 18, and special processing for mutual insulation in the bus duct 16 and the feed-in conductor 30 becomes unnecessary. Therefore, the workability, handleability and workability of the feed-in connection structure are improved. Furthermore, since the feed-in connection structure is made compact, good wiring is possible in a situation where electronic devices such as a recent data center are arranged in the vicinity of the bus duct.

  In FIG. 8, the operation pin 50 of each connection member 40 is operated to each bus bar 18 to electrically connect the connection conductor 46 and the bus bar 18, and then the end surface member 51 is fed into the feed-in conductor. 30 shows a state of being attached to both outer sides in the width direction.

  The end surface member 51 includes a side surface 51b orthogonal to the extending (extending) direction of the bus duct, and a fixing portion 51a that is bent and extends from the end surface at a lower portion of the side surface 51b on the bus duct side. The opening on the side surface of the framework of the feed-in box portion 12 is completely closed by the end surface member 51. The fixing portion 51 a is provided so as to be disposed outside the box case 12 on the bus duct 16 side in a state where the end face member 51 is assembled to the box case 12, and extends in the extending direction of the bus duct 16. The fixing portion 51 a partially covers the opening 52 of the connection portion 14, and can also serve as a housing for the bus duct 16.

  Further, it is fastened to the side cover member 28 of the housing of the bus duct 16 by fastening means (not shown) or the like. Thereby, the box case 12 receives a fixed support with respect to the bus duct 16 main body. That is, the structural strength that should be provided in the box case 12 alone can be partially obtained from the bus duct 16, which greatly contributes to simplification of the structure of the box case 12 itself.

  Further, when the center feed-in unit is assembled in an indoor space such as a data center, the box case 12 and the bus duct 16 can be separated from each other. Contributes greatly to labor saving throughout the construction process.

  The box case 12 is completed by fixing the shielding plate 48 to the upper part of the box case 12. The shielding plate 48 is fastened to the skeleton by a fixing tool (not shown), and may be provided so as to be appropriately engaged and fastened.

  FIG. 9 is an explanatory view when the end face member 51 is to be attached in a state where the connection of the bus bar 18 by the operation pin 50 is not completed. That is, it is an explanatory diagram relating to interference between the operation pin 50 of the connecting member 40 and the end face member 51. 3 is a schematic plan view of a feed-in conductor 30 as viewed in the thickness direction. FIG.

  If the end face member 51 is to be assembled in a state where the operation pin 50 remains attached to the connection member 40 without performing the rotation operation by the operation pin 50, the gripping portion 50a of the operation pin 50 interferes with the assembly position of the end face member 51. Thus, the assembly of the end face member 51 cannot be completed. In other words, the assembly of the box case 12 is not completed unless the operation pin 50 is rotated so that the connection conductor 46 is not crimped to the bus bar 18.

  As described above, according to the embodiment of the present invention, if the box case 12 is assembled, it can be confirmed that the connection between the feed-in conductor 30 and the bus bar 18 is ensured by the connection member 40. This is suitable because accidents due to leakage of connection are prevented.

  Various modifications can be made in the first embodiment described above. FIG. 10 is an explanatory diagram of a modified example relating to the connection between the feed-in conductor 30 and the bus bar 18. In the connection portion of the feed-in unit 10, the upper end in the width direction of the bus bar 18 and the end in the length direction of the feed-in conductor 30, that is, the feed-out end 30 b are connected by a clip (connection conductor) 54. Yes. According to such a configuration, the connecting operation of the bus bar 18 and the feed-in conductor 30 on substantially the same plane can be easily performed without performing precise positioning. Moreover, since the connection member 40 mentioned above is not used, it can comprise at lower cost.

  FIG. 11 is an explanatory diagram of a modified example related to the connecting portion 14 of the feed-in conductor 30. About the substantially U-shaped channel material constituting the housing of the bus duct 16, the upper channel material 20 to be combined is short and the other lower channel material 22 is provided in the longitudinal direction. The opening 52 is formed so that the short sides face each other. Processing necessary to form the opening 52 can be simplified, contributing to labor saving.

  FIG. 12 is an explanatory diagram relating to another procedure of the method of connecting the frame of the box case 12 and the connection member 40. In the procedure described above, the connection member 40 is connected to the feed-in conductor 30 and then inserted into the opening 52 provided in the middle of the bus duct 16. The connection member 40 may be connected in advance, and the feed-out conductor 30 and the connection conductor 46 may be connected by inserting the feed-out end 30b of the feed-in conductor 30 through the slit of the connection member 40. good.

(Second Embodiment)
FIG. 13 is an explanatory diagram according to the second embodiment of the present invention, and is an example applied to a three-wire insulated and intimate bus duct. Insulating close contact type bus bars 60 are arranged to face each other at a predetermined interval, and an insulating close contact type connection member 62 is provided therebetween. Assembling them on the bottom cover member 26, inserting the feed-out end portion 30b of the feed-in conductor 30 between the two insulating contact type connection members 62, and fixing portions provided on the second side plate member 51 of the box case 12 51a is fixed to the insulating contact type bus duct. The feed-in unit of the present invention can also be used for a three-wire insulated contact bus duct, and it is possible to provide flexible power distribution to each load of electronic devices arranged in a row. .

  The present invention is not limited to the above-described embodiments and modifications, but is specified by combining the partial configurations of the embodiments and the examples described in the present specification, and the partial configurations of the embodiments. Including those specified by modification, those specified by adding the partial configuration of the examples described in this specification to the configuration of each embodiment, and those specified by deleting the partial configuration of each embodiment Various modifications are possible without departing from the spirit of the invention.

  In each embodiment, the feed-in conductor 30 is provided in parallel for each phase, but an appropriate arrangement such as a delta arrangement may be selected.

  In the above-described embodiment, it goes without saying that the features of the present invention in the feed-in unit may be appropriately utilized in other bus duct structures. For example, in the T-branch structure or the tap-off structure, the conductor processing is omitted. On the other hand, it is possible to provide a branch structure of a bus bar that can be easily handled.

DESCRIPTION OF SYMBOLS 10 Feed in unit 12 Box case 14 Connection part 16 Bus duct 18 Bus bar 20 Upper channel material 22 Lower channel material 26 Bottom surface cover member 28 Side surface cover member 30 Side in member 32 Side surface member 34 Frame member 36 Spacer agent 40 Connection member 46 Connection conductor 50 Operation pin 51 End face member 52 Opening 54 Clip (connection conductor)
60 Insulation close contact type bus bar 62 Insulation close contact type connection member

Claims (5)

A feed-in conductor electrically connected to the power supply unit;
A bus bar enclosed in the bus duct housing;
A plurality of connecting conductors for electrically connecting the feed-in conductor and the bus bar;
The bus bar has a separated region separated at a portion where the feed-in conductor is electrically connected, and the feed-in conductor is disposed on the substantially same plane as the bus bar in or near the separated region. The bus duct feed-in connection structure is electrically connected by the connection conductor.   The feed-in conductor has a size smaller than the separation distance of the separation region of the bus bar in the extending direction of the bus bar, and is inserted and arranged in the separation region. The bus duct feed-in connection structure according to claim 1, wherein the connection is electrically connected.   The feed-in conductor has a dimension larger than the separation distance of the separation region of the bus bar in the extending direction of the bus bar, and is disposed outside the separation region and electrically connected to the bus bars on both sides by the connection conductor. The bus duct feed-in connection structure according to claim 1, wherein the bus duct feed-in connection structure is connected to the bus duct. The bus duct housing is formed in a substantially rectangular cross section,
Having an opening surface provided with an opening in a portion covering the separation region;
Side cover members having rigidity are fixedly provided on both outer side surfaces substantially orthogonal to the opening surface of the housing along the extending direction of the bus duct,
The feed-in conductor is housed in a box case having an opening surface provided with an opening,
The box case is installed with the opening surface of the box case facing the opening surface of the housing of the bus duct,
The both end surface member which comprises the both end surfaces of the extension direction of the said bus duct of the said box case is each fixed with the said side surface cover member of the housing of the said bus duct, The any one of Claims 1-3 characterized by the above-mentioned. Feed-in connection structure of the described bus duct. The feed-in connection structure for a bus duct according to claim 4, wherein both end surface members of the box case are configured to be removable from the box case.

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