JP7062273B2 - Bus duct feed-in connection structure - Google Patents

Description

The present invention relates to a feed-in connection structure of a bus duct, particularly a feed-in connection structure of 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, data centers, and the like. In such an indoor space, a large number of electronic devices such as power supply devices, electronic devices, and servers are housed in shelves such as racks and arranged in rows. By providing a bus duct to the electronic devices arranged in a row, it is possible to provide flexible power distribution for each load of the electronic devices arranged in a row.

A feed-in unit is used to power the annexed bus duct. The feed-in unit has a feed-in conductor connected to a cable for supplying electric power, and a connecting member for connecting the feed-in conductor to a bus bar included in a bus duct. Here, the feed-in unit includes an end feed-in unit connected to the 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 abutted at a terminal portion of a bus duct and are connected by a connecting member.

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

No. 49-22495 JP-A-2009-284642

In the end feed-in unit of Patent Document 1, the connection portion between the cable and the bus bar has a configuration in which a plate-shaped terminal piece, a conductor exposed part, and an insulating interposition piece are overlapped and collectively tightened with bolts, and is large. There is.

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) in the bus bar through the housing opening, which is troublesome to manufacture and may increase the cost. In addition, since it becomes a large unit in terms of both weight and size, it takes time and effort to construct it especially in an indoor space such as a server room.

Further, in the intermediate feed-in unit described in Patent Document 2, the feed-in box becomes 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 an object thereof is to make a feed-in connection structure for electrically connecting a bus bar in a bus duct and a power supply via a feed-in conductor into a more compact structure. The purpose of the present invention is to provide a feed-in connection structure having improved workability, handleability, 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 problems is
A feed-in conductor that is electrically connected to the power supply unit,
The bus bar contained in the housing of the bus duct and
It has a pair of connecting conductors that electrically connect the feed-in conductor and the bus bar.
The bus bar has a separation region separated by an electrically connected portion of the feed-in conductor, and the feed-in conductor is arranged in or near the separation region on substantially the same plane as the bus bar. It is characterized in that it is electrically connected by being inserted between the pair of connecting conductors.

According to this configuration, since the feed-in conductor and the bus bar are electrically connected on substantially the same plane, the structure at the connecting 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. Further, by making the feed-in connection structure compact, good wiring becomes possible in a situation where electronic devices such as a data center in recent years are lined up in the vicinity of a 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 dimension smaller than the separation distance of the separation region of the bus bar in the extension direction of the bus bar, and is inserted and arranged in the separation region.
It is characterized in that two places between the feed-in conductor and the bus bar are electrically connected by the pair of connecting conductors, respectively .

According to this configuration, at the connecting portion of the feed-in conductor, the feed-in conductor is electrically connected to the bus bar in substantially the same plane, and is inserted into the separated region between the separated bus bars. Since it is placed in a container, the structure of the connecting portion of the feed-in conductor is further reduced in space.

The feed-in connection structure of the bus duct according to claim 3 is the feed-in connection structure of the 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 extension direction of the bus bar, is arranged outside the separation region, and is provided with the bus bars on both sides by the pair of connecting conductors, respectively. It is characterized by being electrically connected.

According to this configuration, the feed-in conductor is configured to have a dimension (width length) larger than the above separation distance, and the bus bars and connecting conductors on both sides in the vicinity of the separation region do not insert the feed-in conductor into the separation region. It is possible to connect easily. Therefore, the connection 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 to have a substantially rectangular cross section, has an opening surface provided with an opening in a portion covering the separation region, and has rigidity on both outer surfaces substantially orthogonal to the opening surface of the housing. The side cover member is fixed along the extension 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 has an opening surface of the box case. It is determined that the end surface members of the box case, which are installed facing the opening surface of the housing of the bus duct and constitute both end surfaces of the bus duct in the extension direction, are fixed to the side cover members of the housing of the bus duct. It is a feature.

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

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

According to this configuration, at the connection portion between the feed-in conductor and the bus duct, the end surface members of the box case can be removed from the box case. Therefore, for example, in the installation stage, a large space is provided with the end surface members removed. It is possible to easily wire and connect the cable from the power supply unit to the feed-in conductor. In addition, it is easy to visually check the wiring after installing the feed-in conductor.

According to the feed-in connection structure of the bus duct of the present invention, in a 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 to improve workability, handleability, and workability. be able to. As a result, in an environment where many branch connection devices and the like exist in the bus duct installation area such as a data center, a larger space can be secured, and workability such as connection work and maintenance and inspection is improved.

It is explanatory drawing which shows the connection state of a feed-in conductor and a bus bar which concerns on 1st Embodiment of this invention. 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 about the skeleton of a box case. It is an enlarged perspective view of a connecting member. It is explanatory drawing about the attachment to the bus duct of the assembled box case. It is explanatory drawing of the state which the feed-in conductor and the bus bar are connected by the connecting conductor. FIG. 6 is a cross-sectional view taken along the line AA in FIG. 6 in which a feed-in conductor and a bus bar are connected by a connecting conductor, and are shown for four phases. It is explanatory drawing which shows the state which the end face member is attached to both outer sides in the width direction of a feed-in conductor after the connecting conductor and the bus bar are electrically connected to each bus bar. It is explanatory drawing about the interference between the operation pin of a connecting member, and an end face 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 about another procedure of the connection method of a skeleton of a box case and a connection member. It is explanatory drawing which concerns on the 2nd Embodiment of this invention, and is applied to the insulation contact type bus duct.

Embodiments of the present invention will be described in detail below with reference to the drawings.

(First Embodiment)
The first embodiment of the feed-in connection structure according to the present invention will be described with reference to FIGS. 1 to 9. The feed-in connection structure of the present invention is realized by an electrical connection between the feed-in conductor and the bus bar. It should be noted that each figure exemplifies the embodiment of the present invention, does not impose any limitation on the scope of rights, and also designs the bus duct, the arrangement direction, the installation position of the feed-in unit, and the installation direction. , There is no limitation on the incoming line direction, etc.

FIG. 1 is an explanatory diagram showing a connection state between the feed-in conductor and the 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 extension direction (extension direction) of the bus duct 16 including the bus bar 18. This connection portion is indicated by reference numeral 14. Here, the middle means a part in the middle 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 at the connecting portion 14 of the bus bar and the feed-in conductor. As shown in FIG. 2, the bus duct 16 is surrounded by a housing made of an upper channel material 20 and a lower channel material 22. A bus bar 18 is provided inside the bus bar 18 for each phase. A substantially square notch 21 is provided at the end of the upper channel material 20 of the housing, and the ends of the bus duct 16 are abutted against the bottom cover member 26 and connected to each other via a joint plate (not shown) to be integrated. , An opening 52 for connecting the feed-in conductor is formed.

In the connecting portion 14, a pair of side cover members 28 are further arranged and reinforced on the side of the bottom cover member 26. The side cover member 28 is fastened to the side surface of the bottom cover member 26 or 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. Flange portions 28a are provided at the vertical end portions of the bus duct 16 to form a substantially U-shaped reinforcing material.

The flange portion 28a on the opening 52 side can be utilized for connecting the box case 12, and the flange portion 28a at the other end can be appropriately fixed to the support of the bus duct 16. For example, when the bus duct 16 is placed 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 regarding the framework of the box case 12. The feed-in conductor 30 is housed in the box case 12. The feed-in conductor 30 is composed of a feed-in end portion 30a connected to a cable (not shown) from a power supply unit and a feed-out end portion 30b for connecting to a bus bar. The feed-in conductor 30 is formed by appropriately stepping the above-mentioned configuration for each phase, and each phase is overlapped with the insulating separating member 36 interposed therebetween and fastened with screws 38 and 39. Is configured as one.

At the feed-in end 30a, the distance required when connecting to the cable is sufficiently secured, and at the feed-out end 30b, the distance is substantially the same as the distance of the bus bar. Each phase is appropriately stepped so as to be separated from each other substantially evenly. The feed-in conductor 30 is stepped in a direction orthogonal to the width direction.

In the feed-in conductor 30 that has been collectively fastened, the side surface members 32 are further fastened from both outer sides of the superposed feed-in conductor 30. A bottom surface portion 32a is formed on the side surface member 32. Since the side member 32 can be attached to a place where the feed-in conductor 30 is fastened together to complete a strong foundation structure, the labor required for assembling the box case 12 is greatly reduced. To.

At the upper part of the box case 12, a shielding 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 part of the frame member 34. The frame member 34 is attached to the upper end portion of the side surface member 32 facing the bottom surface portion 32a side to form the upper frame of the box case 12. It is appropriately assembled with screws, rivets, etc. (not shown). A cable is drawn into the box case 12 through a hole in the shielding plate and connected to the feed-in end 30a.

Two connecting members 40 are arranged on the feed-out end portion 30b 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 connecting member 40. The connecting member 40 includes a connecting conductor 46 that electrically connects the bus bars to each other inside the box-shaped body 42 made of an insulating material.

The box-shaped body 42 is provided with a plurality of substantially rectangular internal spaces 44, and a pair of connecting 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 can be inserted into the slit 48 so as to be electrically contacted with one end of the connecting conductor 46. Has been done. The connecting conductor 46 is a backing plate-shaped metal member, and is urged by a spring (not shown) so that the pair of connecting conductors 46 sandwich each other.

An operation pin 50 is interposed between the pair of connecting conductors 46. By operating the operation pin 50, the separation distance of the connecting conductor 46 can be controlled, and the crimping between the connecting conductor 46 and the bus bar is operated. The operation pin 50 is composed of a shaft portion 50b for separating the connecting conductor 46 and a grip portion 50a for rotating the shaft portion 50b. The shaft portion 50b of the operation pin 50 is a rod-shaped structure having a substantially ellipsoidal cross-sectional structure having a minor axis and a major axis. The operation pin 50 may be made of an insulating member, or the periphery of a hard core material such as metal may be coated with an insulating material.

When the operation pin 50 is interposed between the connecting conductors 46 and sandwiched, the separation distance between the connecting conductors 46 is determined by the length of the sandwiched warp of the operating pin 50. Since the operation pin 50 is provided with a grip portion 50a, it is possible to select a case where it is sandwiched by a long diameter or a case where it is sandwiched by a short diameter by rotating the shaft portion 50b. In this way, the separation distance of the connecting conductor 46 is controlled by the rotation operation of the operation pin 50.

Since the minor axis is shorter than the thickness of the bus bar and the major axis is longer than the thickness of the bus bar, the separation distance of the connecting conductors 46 is longer than the thickness of the bus bar when the connecting conductors 46 are separated by the major axis. Therefore, the bus bar can be easily inserted or removed between the connecting conductors 46. On the contrary, when the connecting conductors 46 are separated by a short diameter, the separation distance of the connecting conductors 46 is shorter than the thickness of the bus bar, so that the bus bar cannot be inserted and removed between the connecting conductors 46.

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

Therefore, the connecting member 40 is arranged on both sides in the width direction of the feed-in conductor 30, and the connecting member 40 may be previously sandwiched between the feed-out end portion 30b by operating the operation pin 50 on the feed-in conductor 30 side. 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 connecting member 40 attached to the feed-out end 30b is protected by attaching an insulating sheet (not shown). If at least a part of the connecting portion between the connecting member 40 and the feed-in conductor 30 is covered, the risk of the connecting conductor 46 being displaced with respect to the feed-in conductor 30 can be relatively reduced. Further, since the risk of the connecting member 40 itself being removed during construction can be alleviated, it is possible to assemble the feed-in unit 10 smoothly, which is preferable. The insulating sheet may be a cover body that can supplementally protect the connecting member 40, and may be made of metal, not limited to the insulating material, and may be covered separately from the housing. Further, a part or all of the connecting member 40 may be covered.

FIG. 5 is an explanatory diagram relating to the attachment of the assembled box case 12 to the bus duct 16. After the basic skeleton of the box case 12 is completed, the feed-out end 30b is inserted into the opening 52 of the bus duct 16. Two connecting members 40 are previously assembled to the feed-out end portion 30b, but the opposite bus bars 16 are accommodated in the slits 48 of the box-shaped body 42 of the connecting members 40, so that the feed-in ends 30b. The connection between the out end portion 30b and the bus bar 18 can be easily performed. Further, with such a configuration, the box case 12 does not become bulky in the extension (extension) direction of the bus bar 16.

FIG. 6 is an explanatory diagram of a state in which the feed-in conductor 30 and the bus bar 16 are connected by the connecting conductor 46. The included connection conductor 46 is illustrated in an explanatory diagram for one phase in which the outside of the box-shaped body 42 of the connecting member 40 is partially removed. While the bus bars 16 are arranged at a predetermined distance from each other, the feed-in conductor 30 is arranged so that the feed-in conductor 30 and the bus bar 16 are connected to each other by a pair of connecting conductors 46. .. The pair of connecting conductors 46 are arranged two by two in each phase according to the parallel arrangement of each phase of the bus bar, but the present invention is not limited to this, 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 construct only one connection and use it without constructing the other connection, and further, one of them. It is also possible to easily construct the other connection separately from the one for which only the connection is constructed, and the structure is extremely flexible from the viewpoint of construction and utilization without narrowing the insulation distance from the adjacent bus bar 18. Is.

FIG. 7 is a cross-sectional view taken along the line AA in FIG. 6 in which the feed-in conductor 30 and the bus bar 16 are connected by the connecting conductor 40, and shows four phases. The feed-in conductor 30 is inserted between the bus bars 18 so as to face each other, and the feed-in conductor 30 and the bus bar 18 are electrically connected by the connecting 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 connecting portion 14 of the feed-in conductor 30 becomes compact as a whole. Further, it is easy to secure the insulation distance between the bus bars 18, and no special processing for mutual insulation in the bus duct 16 and the feed-in conductor 30 is required. Therefore, the workability, handleability, and workability of the feed-in connection structure are improved. Further, by making the feed-in connection structure compact, good wiring becomes possible in a situation where electronic devices such as a data center in recent years are lined up in the vicinity of a bus duct.

In FIG. 8, the operation pin 50 of each connecting member 40 is operated for each bus bar 18 to electrically connect the connecting conductor 46 and the bus bar 18, and then the end face member 51 is a feed-in conductor. The state of attaching to both outer sides in the width direction of 30 is shown.

The end face member 51 has a side surface 51b orthogonal to the extension (extension) direction of the bus duct, and a fixed portion 51a bent and extended from the end face at the lower portion of the side surface 51b on the bus duct side. The end face member 51 completely closes the opening on the side surface of the frame of the feed-in box portion 12. The fixing portion 51a is provided so as to be arranged on the outside of 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 fixed portion 51a partially covers the opening 52 of the connecting 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 a fastening means (not shown) or the like. As a result, the box case 12 receives fixed support for the main body of the bus duct 16. That is, since the structural strength that should be provided by the box case 12 alone can be partially obtained from the bus duct 16, it greatly contributes to the 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 are separable, so that the load and danger of handling heavy objects are reduced and carried in. It greatly contributes to labor saving throughout the construction such as work.

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 frame portion by a fixing tool (not shown), and may be provided so as to be appropriately engaged and fastened.

FIG. 9 is an explanatory diagram when an attempt is made to attach the end face member 51 in a state where the connection of the bus bar 18 by the operation pin 50 is not completed. That is, it is explanatory drawing about the interference between the operation pin 50 of the connection member 40, and the end face member 51. It is a schematic plan view of the feed-in conductor 30 in the thickness direction view.

If the end face member 51 is to be assembled while the operation pin 50 is still attached to the connection member 40 without the rotation operation by the operation pin 50, the grip portion 50a of the operation pin 50 interferes with the assembly position of the end face member 51. Therefore, the assembly of the end face member 51 cannot be completed. That is, unless the operation pin 50 is rotated and the connecting conductor 46 is crimped to the bus bar 18, the assembly of the box case 12 is not completed.

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 member 40 ensures that the feed-in conductor 30 and the bus bar 18 are connected to each other, and the connection member 40 can be confirmed. It is suitable because it prevents accidents due to connection leakage.

In the first embodiment described above, various changes can be made. 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 portion in the width direction of the bus bar 18 and the end portion in the length direction of the feed-in conductor 30, that is, the feed-out end portion 30b are connected by a clip (connecting conductor) 54. There is. According to such a configuration, the connection 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. Further, since the connection member 40 described above is not used, it can be configured at a lower cost.

FIG. 11 is an explanatory diagram of a modification of the connection portion 14 of the feed-in conductor 30. Regarding the substantially U-shaped channel material constituting the housing of the bus duct 16, one upper channel material 20 to be combined is provided as a short side and the other lower channel material 22 is provided in the longitudinal direction, and the feed-in unit side is provided at the connection portion of the feed-in unit. The opening 52 is formed so that the short sides face each other and are in contact with each other. The processing required to form the opening 52 can be simplified, which contributes to labor saving.

FIG. 12 is an explanatory diagram relating to another procedure of a method of connecting the frame of the box case 12 and the connecting member 40. In the procedure described above, the connecting 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, but there are two in each of the opposite bus bars 16 of the opening 52. Even if the connecting member 40 is connected in advance, the feed-out end portion 30b of the feed-in conductor 30 is inserted into the slit of the connecting member 40 to connect the feed-in conductor 30 and the connecting conductor 46. 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 type insulating and close contact type bus duct. Insulation-contact type bus bars 60 are arranged to face each other at predetermined intervals, and an insulation-contact type connection member 62 is arranged between them. 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 close contact type connecting members 62, and fixing the fixing portion provided on the second side plate member 51 of the box case 12. 51a is fixed to an insulating close contact type bus duct. It is possible to use the feed-in unit of the present invention even for a three-wire type insulating and close contact type bus duct, and it is possible to provide flexible power distribution for each load of electronic devices arranged in a row. ..

The present invention is not limited to the above-described embodiments and modifications, and the present invention is specified by combining the partial configurations of the respective embodiments and the examples described in the present specification, and the partial configurations of the respective embodiments are defined. Includes those specified by modification, those specified by adding a partial configuration of the examples described in the present specification to the configuration of each embodiment, and those specified by deleting the partial configuration of each embodiment. , Various changes can be made without departing from the spirit of the invention.

In each embodiment, the feed-in conductors 30 are provided in parallel for all the phases, but an appropriate arrangement such as a delta arrangement may be selected.

Needless to say, in the above-described embodiment, the features of the present invention in the feed-in unit may be appropriately utilized in other bus duct structures, and for example, in the T-branch structure and the tap-off structure, the processing of the conductor is omitted. At the same time, it is possible to provide a branch structure of a bus bar that is easy to handle.

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 cover member 28 Side cover member 30 Feed-in conductor 32 Side member 34 Frame member 36 Separator 40 Connection member 46 Connection conductor 50 Operation pin 51 End face member 52 Opening 54 Clip (connecting conductor)
60 Insulated close contact type bus bar 62 Insulated close contact type connecting member

Claims (5)

A feed-in conductor that is electrically connected to the power supply unit,
The bus bar contained in the housing of the bus duct and
It has a pair of connecting conductors that electrically connect the feed-in conductor and the bus bar.
The bus bar has a separation region separated by an electrically connected portion of the feed-in conductor, and the feed-in conductor is arranged in or near the separation region on substantially the same plane as the bus bar. A feed-in connection structure for a bus duct, characterized in that it is electrically connected by being inserted between the pair of connecting conductors. The feed-in conductor has a dimension smaller than the separation distance of the separation region of the bus bar in the extension direction of the bus bar, and is inserted and arranged in the separation region.
The feed-in connection structure for a bus duct according to claim 1, wherein the two places between the feed-in conductor and the bus bar are electrically connected by the pair of connecting conductors, respectively . The feed-in conductor has a dimension larger than the separation distance of the separation region of the bus bar in the extension direction of the bus bar, is arranged outside the separation region, and is arranged outside the separation region by the pair of connecting conductors with the bus bars on both sides. The feed-in connection structure for a bus duct according to claim 1, wherein the bus duct is electrically connected. The housing of the bus duct is formed to have a substantially rectangular cross section.
It has an opening surface provided with an opening in a portion covering the separation region, and has an opening surface.
Rigid side cover members are firmly fixed along the extension direction of the bus duct on both outer surfaces substantially orthogonal to the opening surface of the housing.
The feed-in conductor is housed in a box case having an opening surface provided with an opening.
The box case is installed so that the opening surface of the box case faces the opening surface of the housing of the bus duct.
The invention according to any one of claims 1 to 3, wherein the end face members constituting the end faces of the bus duct in the extension direction of the box case are fixed to the side cover members of the housing of the bus duct, respectively. The feed-in connection structure of the described bus duct. The feed-in connection structure for a bus duct according to claim 4, wherein the end surface members of the box case are configured to be removable from the box case.

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