JP2014150606A - Switchgear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switchgear which allows the reduction of the number of components and downsizing without changing its internal configuration, depending on a cable lead-in direction.SOLUTION: A switchgear comprises: a cable chamber arranged in the rear of breaker chambers arranged on two, upper and lower, stages; a bus bar chamber arranged across the breaker chambers; a control device chamber arranged adjacent to the breaker chambers; a first connection conductor for connecting a lower-side terminal of the upper stage-side breaker chamber and an upper-side terminal of the lower stage-side breaker chamber to each other; a bus bar arranged in the rear of the first connection conductor; a second connection conductor for connecting between the bus bar and the first connection conductor; an upper-side CT and a lower-side CT respectively arranged on the upper side and the lower side of the bus bar chamber; an upper-side cable connection conductor having an upper-side connection part which is led backward via the upper-side CT; and a lower-side cable connection conductor having, in the same direction as the upper-side connection part of the upper-side cable connection conductor, a lower-side connection part which is led backward via the lower-side CT.

Description

  The present invention relates to a metal closed type switchgear that is used, for example, in a power receiving facility.

  An example of a conventional switchgear is shown in FIG. 12, and FIG. 12 shows a side sectional view. 1 is a switchgear box, 1a is a door, 2 is a circuit breaker chamber arranged in two upper and lower stages, 3 is a bus bar room arranged across the circuit breaker chamber 2 arranged vertically, and 4 is the bus bar. A cable chamber 5 is disposed behind the circuit breaker chamber 2 so as to enclose the chamber 3, 5 is a drawer type circuit breaker disposed in the circuit breaker chamber 2, and 6 is disposed in the circuit breaker chamber 2 and is disposed in the circuit breaker 5. A bus-side bushing that contacts and separates from the circuit breaker, 7 is a cable-side bushing that is disposed in the circuit breaker chamber 2 and contacts and separates from the circuit breaker 5, and 15 is bent into a U-shape that connects the bus-side bushings 6 at the upper and lower stages. The first connection conductor 8 is a three-phase bus having a rectangular cross section, and is arranged extending in the thickness direction of the paper surface of FIG. A control device room 13 is disposed on the front side of the box 1.

  Reference numeral 16 denotes a second connection conductor bent in a U-shape that connects the bus bar 8 and the first connection conductor 15 one to one for each phase. The upper and lower corners of the rear end of the bus bar chamber 3 form a plane, that is, a chamfered portion 3a, 3b that is inclined at an angle of 45 °. Reference numeral 17 denotes a CT formed integrally with three phases, which is mounted on the upper and lower surfaces of the bus bar chamber 3. This CT has a built-in integration of a CT corresponding to each phase and a zero-phase CT that collectively detects three phases. Reference numeral 18 denotes an upper cable connection conductor, which passes through the CT 17 from the cable-side bushing 7 of the upper circuit breaker chamber 2 and is drawn straight out toward the rear of the switch gear, and obliquely near the upper portion of the chamfered portion 3a. The connecting portion 18a is formed by bending downward. Reference numeral 19 denotes a lower cable connecting conductor, which passes through the CT 17 from the cable side bushing 7 of the lower circuit breaker chamber 2 and is drawn straight out toward the rear of the switch gear, and in the vicinity of the lower portion of the chamfered portion 3b. The connecting portion 19a is formed by being bent obliquely downward.

  Reference numeral 20 denotes an upper cable which is connected to the load side and has its end raised from the lower part of the switchgear, and is connected to the connecting part 18a via the terminal 20a. Reference numeral 21 denotes a lower cable which is connected to the load side and has an end raised from the lower part of the switchgear, and is connected to the connecting portion 18b via the terminal 21a. Reference numeral 22 denotes an inspection cover provided on the upper portion of the box body 1, and the inside of the cable chamber 4 can be inspected from above by removing this cover. An inspection cover 23 is provided on the front surface of the cable chamber 4 below the lower circuit breaker chamber 2, and can be entered into the cable chamber 4 by removing the cover. Reference numeral 24 denotes an inspection cover provided on the rear surface of the bus bar room 3, and the inside of the bus bar room 3 can be inspected by removing this cover.

That is, a cable chamber 4 is arranged behind the circuit breaker chambers 2 arranged in two upper and lower stages, and a bus bar chamber 3 extending over the upper and lower circuit breaker chambers 2 is arranged in the cable chamber 4. The lower terminal of the upper circuit breaker 5 and the upper terminal of the lower circuit breaker 5 are connected by the first connection conductor 15, and the three-phase bus 8 is arranged behind the first connection conductor 15 with the longitudinal direction of the cross section being the vertical direction. Phase conductors are arranged vertically and in parallel to extend in the width direction of the switch gear, and each bus bar 8 and each first connection conductor 15 are connected one-to-one with a second connection conductor 16. Then, the CT 17 is arranged above and below the bus bar chamber 3, and the upper cable connecting conductor 18 is led out from the upper terminal of the upper circuit breaker 5 to the vicinity of the rear end of the bus bar chamber 3 through the upper CT 17 and straight rearward. And straight rearward from the lower terminal of the lower circuit breaker 5 via the lower CT 17 The lower cable connecting conductor 19 is led out to the vicinity of the rear end of the bus bar chamber 3 and connected to the upper cable connecting conductor 18 and the lower cable connecting conductor 19 by the upper cable 20 and the lower cable 21 rising from below. ing. A control device room 13 is disposed on the front side of the box 1.

JP 2001-61206 A

  In the conventional switchgear described above, the switchgear box 1 is arranged in the upper and lower circuit breaker chambers 2 and rearwardly of these circuit breaker chambers 2 and at the upper and lower sides, respectively. A cable chamber 4 having a large space for securing a space, a busbar chamber 3 disposed in the cable chamber 4 across the upper and lower two-stage circuit breaker chamber 2, and an upper and lower two-stage circuit breaker chamber 2 And a control device chamber 13 extending to the upper and lower ends of the cable chamber 4 and a door 1a for opening and closing the control device chamber 13 and the upper and lower circuit breaker chambers 2. Therefore, it is necessary to increase the height of the switch gear, and there is a problem that the outer dimension of the switch gear becomes large. Moreover, when the cable pull-in direction is on the upper side, there is a problem that the working position becomes high even in the cable construction. In addition, the height of the switchgear is increased by the height of the large space required to secure the cable terminal processing space, so the size of the elevator when the switchgear is carried in and the size of the electrical room entrance at the installation site There was a problem of receiving restrictions such as.

  In addition, in the case of lower cable pull-in, there is a problem that the upper space used for cable terminal processing has no function and is wasted. As another method, by arranging the circuit breaker room 2 and the bus bar room 3 on the lower side as a whole, a cable terminal processing space space can be secured, but in that case, it has a plurality of configurations depending on the cable drawing direction. As a result, the number of parts increases.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a switchgear that can reduce the number of parts and reduce the size without changing the internal configuration depending on the direction in which the cable is drawn. It is to provide.

  A switchgear according to the present invention includes a box having a door, and an upper-stage circuit breaker that is arranged in two upper and lower stages across the upper end side and the lower end side of the box body and stores the upper-stage circuit breaker and the lower-stage circuit breaker, respectively. And a lower circuit breaker chamber, a cable chamber disposed behind the upper circuit breaker chamber and the lower circuit breaker chamber, and the upper circuit breaker chamber and the lower circuit breaker chamber in the cable chamber. A bus room arranged across the upper circuit breaker room, a control equipment room arranged adjacent to the lower circuit breaker room, and a lower part of the upper circuit breaker room arranged in the bus room A first connection conductor connecting a side terminal and an upper side terminal of the lower-side circuit breaker chamber, a bus arranged behind the first connection conductor, and connecting the bus and the first connection conductor The second connecting conductor to be connected and the upper side of the bus room The upper CT, the lower CT disposed on the lower side of the bus room, and the rear of the bus room from the upper terminal of the upper circuit breaker room toward the rear via the upper CT. An upper cable connecting conductor led to the vicinity of the end and having an upper connection portion in the cable drawing direction, and a rear side of the bus bar chamber from the lower terminal of the lower circuit breaker chamber toward the rear via the lower CT. A lower cable connection conductor that is led out to the vicinity of the end and has a lower connection part in the same direction as the upper connection part of the upper cable connection conductor is provided.

The switchgear according to the present invention includes a door unit including a door disposed on a front surface of a box and a handle provided on the door, and an upper circuit breaker disposed on an upper end side of the box. An upper-stage circuit breaker chamber unit composed of an upper-stage circuit breaker chamber to be housed and an upper-stage control device room arranged adjacent to the upper-stage circuit breaker chamber, and a lower-stage side disposed on the lower end side of the box A lower circuit breaker chamber unit comprising a lower circuit breaker chamber for accommodating a circuit breaker and a lower control device room disposed adjacent to the lower circuit breaker chamber; the upper circuit breaker chamber unit; A first connecting conductor connecting the busbar chamber disposed across the lower breaker chamber unit, a lower terminal of the upper breaker chamber, an upper terminal of the lower breaker chamber, and the first A bus arranged behind the connecting conductor and the bus From a bus bar unit composed of a second connection conductor connecting the first connection conductors, an upper side CT disposed on the upper side of the bus bar chamber, and an upper terminal of the upper circuit breaker chamber An upper side CT unit composed of an upper side cable connection conductor that is led out to the vicinity of the rear end of the bus bar room through the upper side CT and has an upper side connection part in a cable drawing direction; The lower side CT disposed on the lower side of the lower circuit breaker and the lower terminal of the lower-side circuit breaker chamber are led to the vicinity of the rear end of the bus bar chamber backward via the lower side CT and the upper cable connecting conductor. A lower-side CT unit composed of a lower-side cable connection conductor having a lower-side connection portion in the same direction as the upper-side connection portion, and a cover unit disposed on the back surface portion of the box, Uni Divided for each preparative, the divided each unit in which the box body and the cable chamber is formed by assembling together.

  Further, the switchgear according to the present invention includes a box having a door, and an upper stage side circuit that is arranged in two upper and lower stages across the upper end side and the lower end side of the box body, and stores an upper stage circuit breaker and a lower stage circuit breaker, respectively. Between the circuit breaker chamber and the lower-stage circuit breaker chamber, the cable chamber disposed behind the upper-stage circuit breaker chamber and the lower-stage circuit breaker chamber, and the upper-stage circuit breaker chamber and the lower-stage circuit breaker chamber. A bus bar room disposed in the upper stage circuit breaker room, a control equipment room disposed adjacent to the lower stage circuit breaker room, a lower terminal of the upper stage circuit breaker room, and the lower stage circuit breaker room A first connecting conductor for connecting the upper terminal of the first connecting conductor, a bus bar disposed in the bus bar chamber and disposed in front of the first connecting conductor, and a second connecting the bus bar and the first connecting conductor. Connecting conductor and an upper conductor conductor disposed on the rear side of the upper circuit breaker chamber. Side CT, lower side CT arranged on the rear side of the lower-side circuit breaker chamber, and cable lead-in from the upper-side terminal of the upper-side circuit breaker chamber toward the lower side via the upper side CT An upper side cable connection conductor having an upper side connection portion in the direction, and an upper side of the upper side cable connection conductor which is led out upward from the lower side terminal of the lower-side circuit breaker chamber via the lower side CT A lower-side cable connection conductor having a lower-side connection portion in the same direction as the connection portion is provided.

  The switchgear according to the present invention includes a door unit including a door disposed on a front surface of a box and a handle provided on the door, and an upper circuit breaker disposed on an upper end side of the box. An upper-stage circuit breaker chamber unit composed of an upper-stage circuit breaker chamber to be housed and an upper-stage control device room arranged adjacent to the upper-stage circuit breaker chamber, and a lower-stage side disposed on the lower end side of the box A lower circuit breaker chamber unit comprising a lower circuit breaker chamber for storing a circuit breaker and a lower control device room disposed adjacent to the lower circuit breaker chamber; the upper circuit breaker chamber; and A bus room arranged between the lower circuit breaker chamber, a bus bar arranged in the bus room, a lower terminal of the upper circuit breaker chamber, and an upper terminal of the lower circuit breaker chamber are connected to each other. 1 connecting conductor, the bus and the first connecting conductor are connected A bus room unit composed of two connecting conductors, an upper side CT disposed on the rear side of the upper circuit breaker chamber, and an upper terminal of the upper circuit breaker chamber via the upper CT. An upper-side CT unit composed of an upper-side cable connection conductor led out downward and having an upper-side connection portion in the cable drawing direction; a lower-side CT arranged on the rear side of the lower-stage circuit breaker chamber; Lower-side cable connection having a lower-side connection portion that is led out upward from the lower-side terminal of the lower-side circuit breaker chamber via the lower-side CT in the same direction as the upper-side connection portion of the upper-side cable connection conductor A lower CT unit composed of a conductor, and a cover unit disposed on the back side of the box, each unit being divided into units, and assembling the divided units together The box body by and in which the cable chamber is formed.

  The switchgear according to the present invention includes a door unit including a door disposed on a front surface of a box and a handle provided on the door, and a circuit breaker chamber disposed in the box and accommodating a circuit breaker. And a circuit breaker room unit composed of a control device room disposed adjacent to the circuit breaker room, a bus bar room disposed below the circuit breaker room, and a bus bar disposed in the bus bar room A busbar chamber unit including a first connection conductor led out from a lower terminal of the circuit breaker chamber, a busbar and a second connection conductor connecting the first connection conductor; and the circuit breaker chamber A CT unit composed of a CT and a cable connecting conductor which is led out from the upper terminal of the circuit breaker chamber toward the rear side via the CT and has a connection portion in the cable drawing direction, Placed on the back of the box And a cover unit, wherein each unit is divided for each unit, the divided each unit in which the box body and the cable chamber is formed by assembling together.

  According to the switchgear according to the present invention, it is possible to obtain a switchgear that can reduce the number of parts and can be reduced without changing the internal configuration depending on the cable drawing direction.

It is a sectional side view which shows the switchgear concerning Embodiment 1 of this invention. It is a sectional side view which shows the other example of the switchgear concerning Embodiment 1 of this invention. It is a sectional side view which shows the other example of the switchgear concerning Embodiment 1 of this invention. It is a sectional side view which shows the other example of the switchgear concerning Embodiment 1 of this invention. It is a sectional side view which shows the switchgear concerning Embodiment 2 of this invention. It is a sectional side view which shows the switchgear concerning Embodiment 3 of this invention. It is a sectional side view shown in the state which decomposed | disassembled the switchgear concerning Embodiment 4 of this invention. It is a sectional side view shown in the state which decomposed | disassembled the switchgear concerning Embodiment 5 of this invention. It is a sectional side view which shows the state which assembled the switchgear concerning Embodiment 5 of this invention. It is a sectional side view which shows the other example of the state which assembled the switchgear concerning Embodiment 5 of this invention. It is a sectional side view which shows the switchgear concerning Embodiment 6 of this invention. It is a sectional side view which shows the conventional switchgear.

Embodiment 1 FIG.
Hereinafter, Embodiment 1 of the present invention will be described with reference to FIG. 1 and FIG. 2, and in each of the drawings, the same or equivalent members and parts will be described with the same reference numerals. FIG. 1 is a side sectional view showing a switchgear according to Embodiment 1 of the present invention, and shows a case where the cable drawing direction is the lower side. FIG. 2 is a side sectional view showing another example of the switchgear according to Embodiment 1 of the present invention, and shows a case where the cable drawing direction is the upper side.

In these drawings, reference numeral 101 denotes a box having a door 102, and the door 102 is provided with a handle 103. Reference numerals 104 and 105 denote an upper-stage circuit breaker chamber and a lower-stage circuit breaker chamber that are arranged in two upper and lower stages over the upper end side and the lower end side of the box body 101 and store the upper stage circuit breaker 106 and the lower stage circuit breaker 107, respectively. . Reference numeral 108 denotes a cable chamber disposed behind the upper-stage circuit breaker chamber 104 and the lower-stage circuit breaker chamber 105 of the box 101, and reference numeral 109 denotes a cable chamber 108 that straddles the upper-stage circuit breaker chamber 104 and the lower-stage circuit breaker chamber 105. The bus rooms 110 and 111 arranged in the above are the upper control equipment room and the lower control equipment room arranged adjacent to the upper circuit breaker room 104 and the lower circuit breaker room 105, and the figure shows the upper stage as an example. The case where it arrange | positions to the front side of the side circuit breaker room 104 and the lower stage circuit breaker room 105 is shown.

  112 is a cable side bushing of the upper circuit breaker chamber 104, 113 is a bus side bushing of the upper circuit breaker chamber 104, 114 is a cable side bushing of the lower circuit breaker chamber 105, and 115 is a bus side of the lower circuit breaker chamber 105. Bushing 116, upper terminal of upper circuit breaker chamber 104, 117 lower terminal of upper circuit breaker chamber 104, 118 upper terminal of lower circuit breaker chamber 105, 119 of lower circuit breaker chamber 105 This is the lower terminal.

  Reference numeral 120 denotes a first connection conductor that is disposed in the busbar chamber 109 and connects the lower terminal 117 of the upper circuit breaker chamber 104 and the upper terminal 118 of the lower circuit breaker chamber 105, and 121 denotes the first connection conductor 120. A bus bar 122 arranged vertically in the rear direction is a second connection conductor that connects between the bus bar 121 and the first connection conductor 120.

  123 is an upper side CT arranged on the upper side of the bus bar chamber 109, 124 is a lower side CT arranged on the lower side of the bus bar chamber 109, and 125 is an upper side CT 123 from the upper side terminal 116 of the upper circuit breaker chamber 104. An upper cable connecting conductor having an upper connecting portion 125a that is led out to the vicinity of the rear end of the bus bar chamber 109 and is inclined in the cable drawing direction, for example, is supported by the support insulator 126. 127 is led out from the lower terminal 119 of the lower-side circuit breaker chamber 105 to the vicinity of the rear end of the busbar chamber 109 via the lower CT124 and in the same direction as the upper connection portion 125a of the upper cable connection conductor 125. For example, a lower-side cable connection conductor having an inclined lower-side connection portion 127 a is supported by a support insulator 128. Reference numeral 129 denotes a back cover of the box 101.

  In the case of FIG. 1, the cable drawing direction is the lower side, and the upper side connection part 125 a of the upper side cable connection conductor 125 is inclined obliquely downward, and the lower side of the lower side cable connection conductor 127. The side connection portion 127a is also shown as being inclined obliquely downward in the same direction as the upper side connection portion 125a of the upper side cable connection conductor 125. In the case of FIG. 2, the cable drawing direction is the upper side, and the upper side connection portion 125 a of the upper side cable connection conductor 125 is inclined obliquely upward, and the lower side of the lower side cable connection conductor 127. The connecting portion 127a is also shown as being inclined obliquely upward in the same direction as the upper side connecting portion 125a of the upper side cable connecting conductor 125.

The switchgear according to the first embodiment is arranged in two upper and lower stages over the upper end side and the lower end side of the box body 101, and an upper stage circuit breaker chamber 104 that houses an upper stage circuit breaker 106 and a lower stage circuit breaker 107, respectively. A lower-stage circuit breaker chamber 105 is disposed, a cable chamber 108 is disposed behind the upper-stage circuit breaker chamber 104 and the lower-stage circuit breaker chamber 105, and the upper-stage circuit breaker chamber 104 and the lower-stage circuit breaker are disposed in the cable chamber 108. A bus bar 109 is disposed across the chamber 105, and an upper control device room 110 and a lower control device room 111 are disposed adjacent to the upper circuit breaker chamber 104 and the lower circuit breaker chamber 105. A first connection conductor 120 connecting the lower terminal 117 of the upper circuit breaker chamber 104 and the upper terminal 118 of the lower circuit breaker chamber 105 is disposed therein, and the rear of the first connection conductor 120. The bus 121 is arranged on the side, the second connecting conductor 122 connecting the bus 121 and the first connecting conductor 120 is arranged, the upper side CT 123 is arranged on the upper side of the bus room 109, and the lower side of the bus room 109 is arranged. The lower side CT 124 is disposed on the upper side of the upper circuit breaker chamber 104, the upper side terminal 116 is led backward through the upper side CT 123 to the vicinity of the rear end of the bus bar chamber 109, and the upper side is inclined in the cable drawing direction. An upper cable connecting conductor 125 having a connecting portion 125a is arranged and led out from the lower terminal 119 of the lower circuit breaker chamber 105 to the vicinity of the rear end of the bus bar chamber 109 through the lower CT 124 to the rear side. A lower side cable connection conductor 127 having a lower side connection part 127a inclined in the same direction as the upper side connection part 125a of the cable connection conductor 125 is disposed. Since the upper and lower sides of 101 are compact switchgears having no cable terminal processing space, the height of the switchgear is the two-stage stacking height of the upper-stage circuit breaker chamber 104 and the lower-stage circuit breaker chamber 105. There is a merit that it becomes difficult to be restricted by the size of the elevator when the switchgear is carried in and the size of the electric room carrying-in entrance at the site of installation.

FIG. 1 shows a case where the cable is pulled down. The upper side connection portion 125a of the upper side cable connection conductor 125 is inclined downward, and the lower side connection portion of the lower side cable connection conductor 127 is shown. Similarly to the upper side connection part 125a of the upper side cable connection conductor 125, 127a is also configured to be inclined downward. In the case of cable lead-in, as shown in FIG. 2, the upper side connection portion 125a of the upper side cable connection conductor 125 is attached while being inclined upward, and the lower side connection portion 127a of the lower side cable connection conductor 127 is also located on the upper side. Similar to the upper side connection part 125a of the cable connection conductor 125, it is only necessary to incline and attach it, and there is no need to change the internal configuration of the switch gear. Therefore, it is not necessary to have the type of component for each cable pull-in direction, and the number of components can be reduced.
In FIGS. 1 and 2, the case where the upper side connection portion 125a of the upper side cable connection conductor 125 and the lower side connection portion 127a of the lower side cable connection conductor 127 are inclined is described, but the present invention is not limited thereto. Instead, as shown in FIG. 3, the upper side connection portion 125b of the upper side cable connection conductor 125 and the lower side connection portion 127b of the lower side cable connection conductor 127 may be arranged in the vertical direction, or FIG. As shown in FIG. 5, the upper side connection part 125c of the upper side cable connection conductor 125 and the lower side connection part 127c of the lower side cable connection conductor 127 may be arranged in the horizontal direction, and the same effect is produced.

Embodiment 2. FIG.
A second embodiment of the present invention will be described with reference to FIG. 5 is a side sectional view showing a switchgear according to Embodiment 2 of the present invention.

  FIG. 5 shows a case where the cable is pulled in, and the upper side connection portion 125a of the upper side cable connection conductor 125 is attached while being inclined upward, and the lower side connection portion 127a of the lower side cable connection conductor 127 is also located on the upper side. Similar to the upper connection portion 125a of the cable connection conductor 125, the cable connection conductor 125 is attached so as to be inclined upward. A cable terminal processing BOX 130 is attached to the upper side of the cable chamber 108 of the switchgear box 101. The height of the cable terminal processing BOX 130 depends on the cable size, on-site workability, the size of the electrical room, and the like. Determined. As a field work, the connection terminal 131a of the upper side external cable 131 is connected to the upper side connection part 125a of the upper side cable connection conductor 125, and the connection terminal 132a of the lower side external line cable 132 is connected to the lower side of the lower side cable connection conductor 127. It is connected to the side connection part 127a.

  According to the second embodiment, if the height of the cable terminal processing BOX 130 is set to the minimum necessary terminal processing size, the entire switch gear becomes compact in combination with the reduced basic structure of the switch gear.

  Also, ensuring the workability when connecting the cables when the upper outer cable 131 and the lower outer cable 132 are large, and dealing with the restrictions on the layout of the upper part of the electric room are for each surface of the switchgear and It is possible to change the height of the cable terminal processing BOX 130 without changing the basic configuration of the switchgear.

  Also, if the cable terminal processing BOX 130 at the top of the switchgear is removed and the switchgear is shipped in the basic configuration of the switchgear, the height of the switchgear is reduced by the height of the cable terminal processing space. There is a merit that it is difficult to be limited by the size of the electric room entrance at the site of installation.

Embodiment 3 FIG.
A third embodiment of the present invention will be described with reference to FIG. 6 is a side sectional view showing a switchgear according to Embodiment 3 of the present invention.

  FIG. 6 shows a case where the cable is pulled down. The upper side connection portion 125a of the upper side cable connection conductor 125 is attached while being inclined downward, and the lower side connection portion 127a of the lower side cable connection conductor 127 is also located on the upper side. Similar to the upper connection portion 125a of the cable connection conductor 125, the cable connection conductor 125 is attached to be inclined downward. A cable terminal processing BOX 133 is housed in a cable pit in the electrical room, and the height of the cable terminal processing BOX 133 is determined in accordance with the cable size, field workability, the size of the electrical room, and the like. Then, as a field work, the connection terminal 134a of the upper side external cable 134 is connected to the upper side connection part 125a of the upper side cable connection conductor 125, and the connection terminal 135a of the lower side external line cable 135 is connected to the lower side of the lower side cable connection conductor 127. It is connected to the side connection part 127a. When there is no cable pit space that can secure the cable end processing size and the bending R, the raised BOX 136 may be attached to the entire lower part of the basic structure of the switchgear.

  According to the third embodiment, if the height of the cable terminal processing BOX 133 is set to the necessary minimum terminal processing size, the entire switch gear becomes compact together with the basic structure of the reduced switch gear. In addition, ensuring the workability when connecting cables when the cable size of the upper side outer cable 131 and the lower side outer cable 132 is large, and dealing with restrictions on the layout of the cable pit space in the electrical room are for each switchgear. In addition, it is possible to change the height of the cable terminal processing BOX 136 without changing the basic configuration of the switchgear.

  Further, when there is room in the cable pit space of the electrical room, the height of the switch gear can be reduced by storing the cable terminal processing BOX 133 in the pit. Further, when there is no room in the pit space, it can be dealt with by attaching a switch gear raising BOX 136 having a cable terminal processing space. Furthermore, when the rear space cannot be secured, the height of the raised BOX 136 is changed to a dimension that allows maintenance work, thereby enabling maintenance from the ceiling and the front surface.

  Also, if the cable terminal processing BOX 130 at the top of the switchgear is removed and the switchgear is shipped in the basic configuration of the switchgear, the height of the switchgear is reduced by the height of the cable terminal processing space. There is a merit that it is difficult to be limited by the size of the electric room entrance at the site of installation.

Embodiment 4 FIG.
Embodiment 4 of the present invention will be described with reference to FIG. FIG. 7 is a side sectional view showing the switchgear according to the fourth embodiment of the present invention in an exploded state.

In FIG. 7, reference numeral 200 denotes a door unit including a door 102 disposed on the front surface of a box body 101 to be described later and a handle 103 provided on the door 102. Reference numeral 300 denotes an upper-stage circuit breaker chamber 104 that is disposed on the upper end side of the box body 101 and accommodates the upper-stage circuit breaker 106, and an upper-stage control device chamber 110 that is disposed adjacent to the upper-stage circuit breaker chamber 104. This is an upper circuit breaker chamber unit. Reference numeral 400 denotes a lower-stage circuit breaker chamber 105 that is disposed on the lower end side of the box body 101 and houses the lower-stage circuit breaker 107, and a lower-stage control device chamber 111 that is disposed adjacent to the lower-stage circuit breaker chamber 105. The lower circuit breaker chamber unit. Reference numeral 500 denotes a busbar chamber 109 arranged across the upper-stage circuit breaker chamber unit 300 and the lower-stage circuit breaker chamber unit 400, a lower-side terminal 117 of the upper-stage circuit breaker chamber 104, and an upper-side terminal of the lower-stage circuit breaker chamber 105. The first connection conductor 120 that connects the first connection conductor 118, the bus 121 disposed behind the first connection conductor 120, and the second connection conductor 122 that connects the bus 121 and the first connection conductor 120. Is a bus room unit. A cable 600 is led out from the upper side CT 123 disposed on the upper side of the bus bar chamber 109 and the upper terminal 116 of the upper circuit breaker chamber 104 to the vicinity of the rear end of the bus bar chamber 109 via the upper side CT 123 and rearward. It is an upper side CT unit comprised from the upper side cable connection conductor 125 which has the upper side connection part 125a inclined in the drawing-in direction. Reference numeral 700 denotes a lower side CT 124 disposed on the lower side of the bus bar chamber 109 and a lower terminal 119 of the lower circuit breaker chamber 105 through the lower side CT 124 to the rear and to the vicinity of the rear end of the bus bar chamber 109. This is a lower side CT unit composed of a lower side cable connection conductor 127 having a lower side connection part 127a inclined in the same direction as the upper side connection part 125a of the side cable connection conductor 125. A cover unit 800 includes a back cover 129 disposed on the back surface of the box 101. Each of these units is divided into units, and the box body 101 and the cable chamber 108 are formed by assembling the divided units together.

  In the fourth embodiment of the present invention, the door unit 200, the upper circuit breaker chamber unit 300, the lower circuit breaker chamber unit 400, the busbar chamber unit 500, the upper CT unit 600, the lower CT unit 700, and the cover unit 800. It is divided into units as component parts for each function. The parts other than the door unit 200 and the cover unit 800 are configured in a box-shaped unit with a minimum size that can be configured, and each is connected by a connecting portion (not shown) provided in the box-shaped unit.

  The upper circuit breaker chamber unit 300 and the lower circuit breaker chamber unit 400 have the same shape, and the upper CT unit 600 and the lower CT unit 700 have the same shape. Different basic configurations can be obtained by combining the element parts.

  According to the fourth embodiment of the present invention, since the switchgear is reduced in height by the height of the cable terminal processing space by shipping in the state of the basic configuration of the switchgear, the size of the elevator and the site installation location There is a merit that it becomes difficult to be restricted by the size of the electric room entrance. In addition, by dividing the basic configuration of the switchgear into units as component parts for each function, when manufacturing another basic configuration, the same component unit can be used, reducing the number of components. be able to. Further, in the case of a two-stage stacked structure, the number of parts can be further reduced if the unit shapes of the element parts are the same in the upper and lower parts. Furthermore, since it is only necessary to design the element part of the missing part, it is not necessary to create a drawing from 1 and the manufacturing cost can be reduced.

Embodiment 5 FIG.
Embodiment 5 of the present invention will be described with reference to FIGS. 8 to 10. In the drawings, the same or corresponding members and parts will be described with the same reference numerals. FIG. 8 is a side sectional view showing the switchgear according to the fifth embodiment of the present invention in an exploded state. 9 is a side sectional view showing a state in which a switchgear according to Embodiment 5 of the present invention is assembled. 10 is a side sectional view showing another example of the assembled state of the switchgear according to Embodiment 5 of the present invention.

In each of these drawings, reference numeral 200 denotes a door 102 and a door 1 arranged on the front surface of a box body 101 to be described later.
The door unit is configured with a handle 103 provided at 02. Reference numeral 300 denotes an upper-stage circuit breaker chamber 104 that is disposed on the upper end side of the box body 101 and accommodates the upper-stage circuit breaker 106, and an upper-stage control device chamber 110 that is disposed adjacent to the upper-stage circuit breaker chamber 104. This is an upper circuit breaker chamber unit. Reference numeral 400 denotes a lower-stage circuit breaker chamber 105 that is disposed on the lower end side of the box body 101 and houses the lower-stage circuit breaker 107, and a lower-stage control device chamber 111 that is disposed adjacent to the lower-stage circuit breaker chamber 105. The lower circuit breaker chamber unit. Reference numeral 501 denotes a bus bar chamber 509 disposed between the upper-stage circuit breaker chamber unit 300 and the lower-stage circuit breaker chamber unit 400, a lower-side terminal 117 of the upper-stage circuit breaker chamber 104, and an upper side of the lower-stage circuit breaker chamber 105. A first connection conductor 520 for connecting the terminal 118, a bus bar 521 disposed in the bus bar chamber 509 in the horizontal direction in front of the first connection conductor 520, and a connection between the bus bar 521 and the first connection conductor 520 are connected. This is a bus room unit constituted by the second connection conductor 522. 601 is derived from the upper side CT 623 arranged in the vertical direction on the rear side of the upper stage circuit breaker chamber unit 300 and the upper side terminal 116 of the upper stage circuit breaker chamber 104 through the upper side CT 623 toward the lower side. It is an upper side CT unit comprised from the upper side cable connection conductor 625 which has the upper side connection part 625a inclined in the cable drawing-in direction. Reference numeral 701 denotes a lower side CT 724 arranged in the vertical direction on the rear side of the lower circuit breaker chamber unit 400 and a lower terminal 119 of the lower circuit breaker chamber 105 to the upper side via the lower CT 724. The lower-side CT unit includes a lower-side cable connection conductor 727 having a lower-side connection portion 727a that is inclined in the same direction as the upper-side connection portion 625a of the upper-side cable connection conductor 625. A cover unit 800 includes a back cover 129 disposed on the back surface of the box 101. Each of these units is divided into units, and the box body 101 and the cable chamber 108 are formed by assembling the divided units together.

  In the fifth embodiment of the present invention, the door unit 200, the upper circuit breaker chamber unit 300, the lower circuit breaker chamber unit 400, the busbar chamber unit 501, the upper CT unit 601, the lower CT unit 701, and the cover unit 800. It is divided into units as component parts for each function. The parts other than the door unit 200 and the cover unit 800 are configured in a box-shaped unit with a minimum size that can be configured, and each is connected by a connecting portion (not shown) provided in the box-shaped unit.

  The upper circuit breaker chamber unit 300 and the lower circuit breaker chamber unit 400 have the same shape, and the upper CT unit 601 and the lower CT unit 701 have the same shape. Different basic configurations can be obtained by combining the element parts.

  According to the fifth embodiment of the present invention, since the switch gear is reduced in height by the height of the cable terminal processing space when shipped in the state of the basic configuration of the switch gear, the size of the elevator and the site installation location are reduced. There is a merit that it becomes difficult to be restricted by the size of the electric room entrance. In addition, by dividing the basic configuration of the switchgear into units as component parts for each function, when manufacturing another basic configuration, the same component unit can be used, reducing the number of components. be able to. Further, in the case of a two-stage stacked structure, the number of parts can be further reduced if the unit shapes of the element parts are the same in the upper and lower parts. Furthermore, since it is only necessary to design the element part of the missing part, it is not necessary to create a drawing from 1 and the manufacturing cost can be reduced.

  Further, by arranging the bus chamber 509 in which the bus 521 is arranged in the horizontal direction between the upper circuit breaker chamber unit 300 and the lower circuit breaker chamber unit 400, the depth dimension of the switch gear can be significantly reduced. it can.

Further, since the upper CT 623 and the lower CT 724 are arranged in the vertical direction on the rear side of the upper circuit breaker chamber unit 300 and the lower circuit breaker chamber unit 400, even if there is no cable terminal processing BOX, the minimum A switchgear having terminal processing dimensions can be obtained.

  FIG. 9 shows a case where the cable is pulled down. The door unit 200, the upper circuit breaker chamber unit 300, the lower circuit breaker chamber unit 400, the busbar chamber unit 501, the upper CT unit 601, and the lower CT unit 701. The case where the box body 101 and the cable chamber 108 are formed by assembling each unit divided into units as component parts for each function of the cover unit 800 is shown.

  FIG. 10 shows a case where the cable is pulled in. The door unit 200, the upper circuit breaker chamber unit 300, the lower circuit breaker chamber unit 400, the busbar chamber unit 501, the upper CT unit 601, the lower CT unit 701. The case where the box body 101 and the cable chamber 108 are formed by assembling each unit divided into units as component parts for each function of the cover unit 800 is shown.

  In FIG. 8, since the upper CT unit 601 and the lower CT unit 701 have the same shape, the upper CT unit 601 is turned upside down when the cable is pulled upward. By diverting the lower CT unit 701 upside down and diverting it as the upper CT unit 601, the upper CT unit 601 can be adapted to the upper pull-in of the cable shown in FIG. The number of parts can be reduced because there is no need to change the type of parts for each cable pull-in direction.

  In the fifth embodiment, the door unit 200, the upper circuit breaker chamber unit 300, the lower circuit breaker chamber unit 400, the busbar chamber unit 501, the upper CT unit 601, the lower CT unit 701, and the cover unit 800 are provided. The case where the box body 101 and the cable chamber 108 are formed by integrally assembling the units divided into units as the component parts for each function has been described. It does not have to be divided every time, and the configurations of FIGS. 9 and 10 may be obtained as an integral structure, and the same effect is obtained.

Embodiment 6 FIG.
A sixth embodiment of the present invention will be described with reference to FIG. FIG. 11 is a side sectional view showing a switchgear according to Embodiment 6 of the present invention.

In Embodiment 6 of the present invention, the case where the circuit breakers are stacked in one stage is shown, and 201 is composed of a door 202 disposed on the front surface of the box body 101 described later and a handle 203 provided on the door 202. Door unit. Reference numeral 301 denotes a circuit breaker chamber unit that includes a circuit breaker chamber 104a that is disposed in the box 101 and houses the circuit breaker 106a, and a control device chamber 110a that is disposed adjacent to the circuit breaker chamber 104a. Reference numeral 502 denotes a bus bar chamber 509a disposed on the lower side of the circuit breaker chamber 104a, a bus bar 521 disposed in the bus bar chamber 509a, and a first connection conductor 520a led out from a lower terminal 117 of the circuit breaker chamber 104a. , A bus bar unit composed of a bus bar 521 and a second connection conductor 522a connecting the first connection conductor 520a. Reference numeral 602 denotes a CT 123a that is horizontally disposed on the rear side of the circuit breaker chamber 104a, and a connecting portion that is led out from the upper terminal 116 of the circuit breaker chamber 104a toward the rear side via the CT 123a and is inclined in the cable drawing direction. The CT unit includes a cable connecting conductor 1251 having 1251a. Reference numeral 801 denotes a cover unit including a back cover 129 a disposed on the back surface of the box body 101. These units are divided for each unit, and the box 101 and the cable chamber 1 are assembled by assembling the divided units together.
08 is formed.

  In the sixth embodiment of the present invention, the door unit 201, the circuit breaker chamber unit 301, the busbar chamber unit 502, the CT unit 602, and the cover unit 801 are divided into units as component parts for each function. The parts other than the door unit 201 and the cover unit 801 are configured in a box-shaped unit with a minimum size that can be configured, and each is connected by a connecting portion (not shown) provided in the box-shaped unit. The heights of the door unit 201 and the cover unit 801 are approximately equal to the circuit breaker chamber unit 301 and the busbar chamber unit 502 stacked together.

  According to the sixth embodiment of the present invention, the height of the switch gear is approximately equal to the sum of the breaker chamber unit 301 and the busbar chamber unit 502, and the height of the switch gear can be reduced. Therefore, there is an advantage that it is difficult to be restricted by the size of the elevator and the size of the electric room entrance at the site of installation.

  It should be noted that within the scope of the present invention, the embodiments can be freely combined, or the embodiments can be appropriately modified or omitted.

  The present invention is suitable for realizing a switchgear that can reduce the number of parts and reduce the size without changing the internal configuration depending on the direction in which the cable is drawn.

101 Box, 102 Door, 103 Handle, 104 Upper circuit breaker room, 104a Circuit breaker room, 105 Lower circuit breaker room, 106 Upper circuit breaker, 106a Circuit breaker, 107
Lower side circuit breaker, 108 cable room, 109 bus room, 110 upper side control equipment room, 110a control equipment room, 111 lower side control equipment room, 116 upper side terminal, 117 lower side terminal, 118 upper side terminal, 119 lower side Terminal, 120 First connection conductor, 121 Bus bar, 122 Second connection conductor, 123 Upper side CT, 123a CT, 124 Lower side CT, 125 Upper side cable connection conductor, 125a Upper side connection part, 125b Upper side connection part 125c Upper side connection part, 127 Lower side cable connection conductor, 127a Lower side connection part, 127b Lower side connection part, 127c Lower side connection part, 129 Back cover, 129a
Back cover, 200 door unit, 201 door unit, 202 door, 203 handle, 300 upper circuit breaker room unit, 301 circuit breaker room unit, 400 lower circuit breaker room unit, 500 bus room room unit, 501 bus room room unit, 502 Busbar unit, 509 Busbar chamber, 509a Busbar chamber, 520 First connection conductor, 520a First connection conductor, 521 Busbar, 522 Second connection conductor, 522a Second connection conductor, 600
Upper side CT unit, 601 Upper side CT unit, 602 CT unit, 623 Upper side CT, 625 Upper side cable connection conductor, 625a Upper side connection part, 700 Lower side CT unit, 701 Lower side CT unit, 724 Lower side CT, 727 Lower side cable connection conductor, 727a Lower side connection part, 800 cover unit, 801 cover unit, 1251 Cable connection conductor, 1251a connection part.

Claims (5)

  A box having a door, and an upper-stage circuit breaker chamber and a lower-stage circuit breaker chamber, which are arranged in two upper and lower stages over the upper end side and the lower end side of the box body, and store the upper-stage circuit breaker and the lower-stage circuit breaker, respectively. A cable chamber disposed behind the upper-stage circuit breaker chamber and the lower-stage circuit breaker chamber, and a bus-bar chamber disposed in the cable chamber across the upper-stage circuit breaker chamber and the lower-stage circuit breaker chamber A control device room arranged adjacent to the upper stage circuit breaker room and the lower stage circuit breaker room, a lower terminal of the upper stage circuit breaker room arranged in the busbar room, and the lower stage circuit breaker A first connecting conductor for connecting the upper terminal of the chamber, a bus arranged behind the first connecting conductor, a second connecting conductor for connecting the bus and the first connecting conductor, An upper side CT disposed on the upper side of the bus room, and Lower side CT arranged on the part side and the upper side terminal of the upper-side circuit breaker chamber are led out to the vicinity of the rear end of the bus bar room via the upper side CT, and the upper side in the cable drawing direction. An upper cable connecting conductor having a connecting portion, and an upper cable connecting conductor led out from the lower terminal of the lower-side circuit breaker chamber to the vicinity of the rear end of the bus chamber through the lower CT to the rear. A switchgear comprising a lower-side cable connection conductor having a lower-side connection portion in the same direction as the upper-side connection portion.   A door unit composed of a door disposed on the front surface of the box and a handle provided on the door; an upper breaker chamber disposed on the upper end side of the box and housing the upper breaker; and the upper break An upper-stage circuit breaker chamber unit configured from an upper-stage control device chamber disposed adjacent to the side circuit breaker chamber, and a lower-stage circuit breaker chamber disposed on the lower end side of the box body and housing the lower-stage circuit breaker And a lower-side circuit breaker chamber unit that is arranged adjacent to the lower-side circuit breaker chamber, and straddles the upper-side circuit breaker chamber unit and the lower-side circuit breaker chamber unit. A first connecting conductor for connecting the arranged busbar chamber, a lower terminal of the upper breaker chamber, an upper terminal of the lower breaker chamber, and a bus arranged behind the first connecting conductor; A second connecting the bus and the first connecting conductor; A bus room unit constituted by a connecting conductor, an upper side CT disposed on the upper side of the bus room, and an upper side terminal of the upper-side circuit breaker room toward the rear via the upper side CT. An upper CT unit composed of an upper cable connecting conductor led to the vicinity of the rear end of the bus room and having an upper connection part in the cable drawing direction; a lower CT arranged on the lower side of the bus room and the lower stage A lower side connecting portion led out from the lower side terminal of the side circuit breaker chamber to the vicinity of the rear end of the bus bar chamber via the lower side CT and in the same direction as the upper side connecting portion of the upper side cable connecting conductor A lower-side CT unit comprising a lower-side cable connecting conductor and a cover unit disposed on the back surface of the box, each unit being divided into units, Switchgear, characterized in that said box body and the cable chamber is formed by assembling the door integrally.   A box having a door, and an upper-stage circuit breaker chamber and a lower-stage circuit breaker chamber, which are arranged in two upper and lower stages over the upper end side and the lower end side of the box body, and store the upper-stage circuit breaker and the lower-stage circuit breaker, respectively. A cable chamber disposed behind the upper-stage circuit breaker chamber and the lower-stage circuit breaker chamber; a busbar chamber disposed between the upper-stage circuit breaker chamber and the lower-stage circuit breaker chamber; and the upper stage A control device chamber disposed adjacent to the side circuit breaker chamber and the lower circuit breaker chamber, a first terminal connecting the lower terminal of the upper circuit breaker chamber and the upper terminal of the lower circuit breaker chamber. A connection conductor; a bus line disposed in the bus line chamber and disposed in front of the first connection conductor; a second connection conductor connecting between the bus line and the first connection conductor; and the upper-side circuit breaker. An upper side CT disposed on the rear side of the chamber, and a rear side of the lower circuit breaker chamber A lower-side CT arranged, and an upper-side cable connection conductor having an upper-side connection portion that is led out downward from the upper-side terminal of the upper-side circuit breaker chamber via the upper-side CT. The lower side having a lower side connection portion which is led out upward from the lower side terminal of the lower stage circuit breaker chamber via the lower side CT in the same direction as the upper side connection portion of the upper side cable connection conductor A switchgear comprising a cable connection conductor.   A door unit composed of a door disposed on the front surface of the box and a handle provided on the door; an upper breaker chamber disposed on the upper end side of the box and housing the upper breaker; and the upper break An upper-stage circuit breaker chamber unit configured from an upper-stage control device chamber disposed adjacent to the side circuit breaker chamber, and a lower-stage circuit breaker chamber disposed on the lower end side of the box body and housing the lower-stage circuit breaker And a lower-side circuit breaker chamber unit that is arranged adjacent to the lower-stage circuit breaker chamber, and the upper-stage circuit breaker chamber and the lower-stage circuit breaker chamber. The first connecting conductor, the bus and the first bus connecting the upper bus terminal, the lower bus terminal disposed in the bus chamber, the lower terminal of the upper circuit breaker chamber, and the upper terminal of the lower circuit breaker chamber. Busbar chamber constituted by a second connecting conductor connecting between the connecting conductors A knit, an upper side CT disposed on the rear side of the upper circuit breaker chamber, and an upper terminal of the upper circuit breaker chamber, and led out downward via the upper CT, in the cable drawing direction. From the upper side CT unit composed of the upper side cable connection conductor having the upper side connection portion, the lower side CT arranged on the rear side of the lower stage circuit breaker chamber, and the lower side terminal of the lower stage circuit breaker chamber A lower-side CT unit composed of a lower-side cable connection conductor that is led out upward via the lower-side CT and has a lower-side connection portion in the same direction as the upper-side connection portion of the upper-side cable connection conductor; A cover unit disposed on the back surface of the box, each unit is divided into units, and the box and the cable chamber are assembled by assembling the divided units together. Switchgear characterized in that it is made.   A door unit composed of a door disposed on the front surface of the box and a handle provided on the door, a circuit breaker chamber disposed in the box and housing the circuit breaker, and disposed adjacent to the circuit breaker chamber A circuit breaker room unit composed of a control device room, a bus bar room arranged below the circuit breaker room, a bus bar arranged in the bus bar room, and a lower terminal of the circuit breaker room A bus chamber unit composed of the first connecting conductor, the bus and the second connecting conductor connecting the first connecting conductor, a CT disposed on the rear side of the circuit breaker chamber, and the A CT unit composed of a cable connection conductor that is led out from the upper terminal of the circuit breaker room toward the rear side via the CT and has a connection portion in the cable drawing direction, and is arranged on the back surface of the box Each of the unit. Switchgear, characterized in that is divided for each unit, the box body and the cable chamber by assembling the divided each unit integrally are formed.

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