WO2013018429A1 - 閉鎖配電盤 - Google Patents
閉鎖配電盤 Download PDFInfo
- Publication number
- WO2013018429A1 WO2013018429A1 PCT/JP2012/063860 JP2012063860W WO2013018429A1 WO 2013018429 A1 WO2013018429 A1 WO 2013018429A1 JP 2012063860 W JP2012063860 W JP 2012063860W WO 2013018429 A1 WO2013018429 A1 WO 2013018429A1
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- WIPO (PCT)
- Prior art keywords
- cable
- closed switchboard
- circuit breaker
- compartment
- lead
- Prior art date
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
- H02B1/202—Cable lay-outs
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
- H02B1/06—Boards, panels, desks; Parts thereof or accessories therefor having associated enclosures, e.g. for preventing access to live parts
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/24—Circuit arrangements for boards or switchyards
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/303—Bases or feet
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/46—Boxes; Parts thereof or accessories therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/54—Anti-seismic devices or installations
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/301—Cabinet-type casings; Parts thereof or accessories therefor mainly consisting of a frame onto which plates are mounted
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
Definitions
- the present invention relates to a closed switchboard in which a plurality of panels including a panel dedicated to cable connection processing are arranged in a row, and in particular, the structure of the cable connection board, and the structure of the closed switchboard that reduces damage caused by a fire or water disaster, and
- the present invention relates to a fixing structure for fixing a floor portion of a closed switchboard that requires seismic performance.
- the main circuit cables for drawing and for drawing are respectively connected to separate casings (boards). That is, in the conventional unit configuration, from the left side of FIG. 17, a cable drawing board 81 for drawing in a cable, a circuit breaker containing board 82 in which a circuit breaker and the like are housed, and a cable drawing board 83 for drawing out the cable are arranged in a row. Yes.
- the pull-in cable and the pull-out cable are separately accommodated in two different cases.
- a cable connection box is provided on the upper part of the closed switchboard and the cables are connected in the box.
- a plurality of circuit breakers are arranged vertically in a circuit breaker room provided on the front side inside the housing, a main bus room and a cable room are provided behind the circuit breaker room, and one end side of each circuit breaker Is generally known as a switchboard configured to be connected to a main bus arranged in the main bus room and to be connected to a load cable in the cable room and pulled out to the outside at the other end side (for example, Patent Documents) 1).
- the following techniques are disclosed as a structure of the switchboard in consideration of a fire.
- devices such as a circuit breaker, a cable, and a busbar are housed in a circuit breaker, a cable room, and a busbar room, respectively. Partitioning.
- the conventional closed switchboard shown in FIG. 1 of Patent Document 2 is divided into three blocks, a cable room, a bus bar room, and a circuit breaker room. A partition plate is provided at the boundary between the cable room and the bus bar room.
- thermoelectric element is provided at the boundary with the wind path in the upper part of the cable room, bus bar room and circuit breaker room.
- FIG. 20A is a perspective view of the floor fixing portion
- FIG. 20B is a side cross-sectional view of FIG.
- a thick flat plate 92 thicker than the bottom frame 91 is fixed by welding to a right-angled portion that contacts the same plane at the corner of the bottom frame 91 among the frames constituting the casing of the switchboard.
- the distribution board is fixed to the foundation surface by passing the foundation bolt 93 embedded in the floor surface through the mounting hole 92a formed in the thick flat plate 92 and tightening with a nut 95 via a washer 94 from above. (See Patent Document 4).
- JP 2008-43181 A (2nd page, FIG. 1) Japanese Patent Laid-Open No. 3-256507 Japanese Utility Model Publication No. 63-160004 Japanese Utility Model Publication No. 58-21285 (2nd page, Fig. 3-4)
- the lead-in and lead-out cables may be a charging part and a non-charging part, respectively.
- the lead-in and lead-out cables are arranged in separate cases.
- the overall external dimensions when the closed switchboards are arranged are increased, and the installation area of the building where the closed switchboards are arranged is correspondingly increased. There was a point.
- a cable connection box is not provided in the upper part of the case, but a large and heavy box is installed in the upper part of the case.
- the center of gravity is high and the seismic performance is lowered, and seismic performance is required, it is necessary to provide seismic reinforcement.
- the distribution board having a configuration in which the cable room for the lead-out cable is arranged at the rear part of the circuit breaker room has a problem that a board for cable drawing is required separately.
- a thick plate 92 is welded to the bottom frame 91 at the four corners of the casing as a member for mounting a base bolt. Although it is fixed, the thick plate 92 is individually provided at each corner, so the strength of the fixed part is not necessarily sufficient, depending on the large vibration due to earthquakes, the weight of the switchboard, the position of the center of gravity, etc. There is a problem that the bottom frame 91 may be deformed. Further, when welding the thick plate 92, it is difficult to weld the bolt holes with tolerances within the tolerance in accordance with the dimensions between the left and right and front and rear foundation bolts, and the work time is also long.
- the hole diameter of the mounting hole 92a is larger than the standard bolt hole of the corresponding foundation bolt 93, is a long hole, and has a large diameter and a large thickness. It was common to use a washer to tighten, and a special washer was required.
- the present invention has been made to solve the above-described problems, and a closed switchboard capable of reducing the installation area even when a dedicated panel for drawing in and drawing out a cable is provided.
- the purpose is to obtain.
- aiming to improve disaster prevention it aims to improve the separation performance of the circuit breaker panel and minimize the damage caused by fire and water disaster.
- it aims at obtaining the closed switchboard which improves the rigidity of the fixing
- a closed switchboard includes a device storage panel in which main circuit equipment is stored, and a cable that is arranged in a row adjacent to the device storage panel and that receives power from and to the main circuit equipment.
- the cable connection board is composed of a single housing, the interior is divided into two by a partition plate, and a cable drawing room and a drawing side cable are housed in which the drawing side cable is accommodated. It is divided into a cable drawing room.
- the circuit breaker compartment storing the circuit breakers stacked vertically
- the bus compartment storing the bus connected to each circuit breaker
- the upper and lower cable compartments storing the cable connected to each circuit breaker
- the chassis is arranged in multiple rows, and both side walls adjacent to each other in parallel And / or ceiling part of circuit breaker compartment, partition part between stacked circuit breakers, partition part between upper cable compartment and lower cable compartment, and busbar compartment and upper and lower cable compartments, or both Breaker compartment in contact with The rear wall, is provided with a heat insulating layer for thermal barrier, respectively.
- a closed switchboard fixing device having a casing whose outer shape is formed in a substantially rectangular parallelepiped shape by combining a vertical frame, a width direction frame, and a depth direction frame, it is arranged to be opposed to the left and right in the width direction of the casing. It has a pair of vertical frames and a floor side width direction frame provided so as to connect the lower side thereof, and is made of a thick plate thicker than the thickness of each frame, and has both ends abutting against the pair of vertical frames.
- the reinforcing member for fixing the housing is disposed on the floor plate of the housing and is fixed to the lower side of the pair of vertical frames and the floor-side width direction frame by welding.
- the cable connection board is constituted by a single housing, the inside is divided into two by the partition plate, and the cable lead-in chamber in which the lead-in side cable is accommodated and the cable in which the lead-out side cable is accommodated Since it is partitioned into a drawer chamber, the cable connection process can be performed on one side compared to the case where the lead-in side cable and the lead-out side cable are housed in the same housing, as compared with the case of housing in individual housings. Connection work can be easily performed, and the installation space of the closed switchboard can be reduced.
- the separation performance of each compartment and breaker panel can be enhanced, and a fire can occur in the breaker panel.
- it is possible to prevent heat from the flame from being transmitted to other circuit breakers and other compartments.
- it can be easily used in combination with a metal barrier, and the heat shielding effect can be further improved.
- a reinforcing member for fixing the casing which is made of a thick plate and has both ends abutting against the pair of vertical frames, is disposed on the floor plate of the casing, and the lower side and the floor side width of the pair of vertical frames. Since it is fixed to the direction frame by welding, the rigidity of the floor surface of the closed switchboard can be increased, and a closed switchboard having excellent earthquake resistance can be provided.
- FIG. 8 It is a side view of the cable connection board of the closed switchboard by Embodiment 2 of this invention.
- the whole closed switchboard by Embodiment 3 of this invention is shown, (a) is a sectional side view, (b) is the rear view which looked at the closed switchboard of two sides arranged in a horizontal direction from the rear surface. It is a sectional side view which shows the metal barrier part of the closed switchboard by Embodiment 3 of this invention. It is the front view which looked at FIG. 8 from the front. It is the rear view which looked at FIG. 8 from the back. It is a housing
- FIG. 1 is a row board configuration diagram illustrating an example of a unit configuration of a closed switchboard with a block skeleton
- FIG. 2 is a perspective view illustrating an appearance of the closed switchboard configured as illustrated in FIG. 1.
- the closed switchboard which this application makes object is equivalent to what is normally called a switch gear, in this invention, the term is unified with "closed switchboard.”
- each of the panels constituting the closed switchboard includes a circuit breaker, a busbar, a cable, and the like housed in a metal casing, and the ceiling side or floor side of the casing Have an opening for drawing or drawing the external cable.
- the invention of the present application is to improve the installation workability, disaster prevention, and earthquake resistance in each of the panels arranged in this manner, and each characteristic part will be described below.
- FIG. 3 is a single-line connection diagram illustrating the configuration of the closed switchboard according to the first embodiment of the present invention.
- a cable connection board 1 capable of connecting a drawing cable and a drawing cable in one housing
- a main circuit device such as a circuit breaker connected to the cable connection board 1.
- the accommodated equipment storage board 2 is arranged in a row.
- the equipment storage board 2 is usually composed of a plurality of boards, and these are arranged in a single cable connection board 1. If this FIG. 3 is contrasted with FIG. 1 demonstrated previously, the cable connection board 1 will correspond to the cable connection board 100 of FIG. 1, and the apparatus storage board 2 will correspond to the circuit breaker storage board 200 or less.
- FIG. 4 is a side view showing the internal structure of the cable connection board 1 of the closed switchboard according to the first embodiment.
- the inside of the housing 3 is divided into a cable drawing chamber 4 and a cable drawing chamber 5 by being divided into two by a partition plate 6.
- the partition plate 6 is made of, for example, a steel plate similar to the housing, but an insulating plate may be used. By completely partitioning with the partition plate 6, for example, the structure is such that the drawer side can be safely operated even when the lead-in side is charged, and the feature of the present application is that both chambers are housed in one housing 3. Part. In the figure, the left is the front and the right is the rear.
- the lead-in side cable 7 is pulled in from the lead-in port 3 a above the cable lead-in chamber 4 and is supported and fixed to the side wall by the support member 8.
- Each of the three-phase cable terminals and the lead-in main bus 9 are connected to the side wall via a connection conductor 11 supported by a support insulator 10.
- the lead-out side cable 12 is pulled out from the lead-out port 3b above the cable lead-out chamber 5, and the terminal of the lead-out side cable 12 and the three-phase lead-side main bus 13 are supported on the side wall by the supporting insulator 10 Are connected via a connection conductor 14 supported by.
- the cable drawing chamber 5 has a larger space than the cable drawing chamber 4, and the arrangement path of the connection conductor 14 is devised to match the phase order of the drawing cable and the drawing cable.
- the cable inlet 3a and the cable outlet 3b are both provided on the upper surface of the cable connection board 1 in FIG. 4, but both are provided on the lower surface of the cable connection board 1 so that the cable can be drawn in and drawn out from below. Also good.
- the cable may be installed on the ceiling side or in the floor side pit. What is necessary is just to select suitably so that routing may become easy.
- the arrangement of the main bus connected to the cable is determined according to the equipment arrangement of the equipment storage boards to be arranged.
- 9 is configured in a triangular arrangement at the lower part of the cable drawing chamber 4 so that the space in the circuit breaker accommodating board 2 is effectively used.
- the lead-out side main bus 13 is arranged in the vertical direction on the upper side of the cable lead-out chamber 5 on the side close to the partition plate 6.
- the arrangement of the cable drawing chamber 4 and the cable drawing chamber 5 may be reversed left and right.
- FIG. 5 is an equipment storage board arranged in a row adjacent to the cable connection board 1 of FIG.
- the circuit breaker accommodating board 2 in which the circuit breaker is accommodated will be described as an example of the equipment accommodating board.
- the figure is a side view showing the internal structure.
- the inside of the casing of the circuit breaker accommodating board 2 is divided into a lower circuit breaker chamber side 15a and an upper circuit breaker chamber 15b from the lower side of the front surface (left side in the figure), and the circuit breakers are accommodated in the respective chambers.
- a controller room 16 is located further above the upper circuit breaker room 15b.
- the upper part on the rear side is a drawing-side main bus room 17, and the lower part is a drawing-side main bus room 18.
- Each chamber is partitioned by a partition plate.
- a three-phase lead-side main bus 9 is arranged in a triangular shape in the lead-side main bus chamber 18, and the lead-side main bus on the cable connection board 1 described above is arranged. 9 is connected to one. Further, as shown in FIG. 5B, a three-phase lead-side main bus 13 is arranged in the vertical direction in the lead-side main bus chamber 17, and the lead-side main bus 13 on the cable connection panel 1 side Connected together.
- the upper and lower circuit breakers are configured to be connected in series between the drawing-side main bus 9 and the drawing-side main bus 13.
- the terminals of the circuit breaker are arranged so that three phases are arranged in a direction perpendicular to the paper surface in the figure, and each is connected to a bus of each phase via a branch bus 19.
- the arrangement configuration of the main circuit devices in the circuit breaker accommodating board 2 is an example, and is not limited to FIG.
- the device storage panel in which the main circuit device is stored, and the panel placement adjacent to the device storage panel, and the input / output of power to the main circuit device In a closed switchboard equipped with a cable connection board that accommodates cables for carrying out the cable connection, the cable connection board is composed of one housing, the interior is divided into two by a partition plate, and the cable lead-in that accommodates the lead-in side cable Because the compartment is divided into a room and a cable lead-out chamber in which the lead-out side cable is housed, the lead-in side cable and the lead-out side cable are housed in the same housing, compared with the case of housing in individual housings.
- the cable connection process can be performed on one surface, the connection work can be easily performed. Moreover, the installation space of a closed switchboard can be reduced. Furthermore, the center of gravity of the entire panel is lowered compared to the conventional configuration in which a cable connection box is disposed on the upper part of the enclosure of the closed switchboard without providing a cable connection panel, so that the seismic performance is improved.
- the cable routing route is selected according to the environment of the closed switchboard installation location. Therefore, the route is shortened and the cable wiring can be simplified.
- FIG. FIG. 6 is a side view of a cable connection board of a closed switchboard according to Embodiment 2 of the present invention, and is a view seen from the side opposite to the side connected to the equipment housing board when lined up. Since the internal structure in the panel is the same as that of FIG. As shown in the figure, openings 20a and 20b of a size capable of cable connection work are provided corresponding to the portions where the cables of the cable drawing chamber 4 and the cable drawing chamber 5 are arranged, and can be removed there. The work covers 21a and 21b are attached.
- the size of the openings 20a and 20b is determined from the position close to the upper end of the panel to the vicinity of the cable terminal where the cable is actually connected in consideration of the cable pull-in operation from the upper part. The size is sufficient to allow visual confirmation. Of course, if the cable entry / exit is on the lower side, the cable should be provided at the appropriate position.
- the weight of the work covers 21a and 21b can be reduced, and can be easily removed and attached. Opening and closing is easier compared to opening and closing the entire door.
- each of the cable lead-in chamber and the cable lead-out chamber of the cable connection board has a working surface on the side opposite to the side facing the equipment storage board. Since the opening and the work cover for closing the opening are provided, the cable connection work can be easily performed, and the check work and the tightening work in the periodic inspection and the like are easy, so that workability is improved.
- Embodiment 3 a closed switchboard according to Embodiment 3 will be described.
- the present embodiment relates to a closed switchboard that reduces damage caused by fire and water disaster.
- This closed switchboard is a board corresponding to the feeder boards 300 and 400 in the unit configuration described in FIG.
- the internal device arrangement is an example, and is not an arrangement that is assumed to be directly connected to the circuit breaker housing panel 2 of the first embodiment. Therefore, the reference numerals of the components are different from those of the first embodiment.
- the closed switchboard in the third embodiment shown in FIGS. 7 to 10 is controlled by shutting off the flame of the fire generated in the main circuit of the air insulation layer A and the drawer type circuit breaker 40 that cut off the heat due to the flame in the event of a fire.
- FIG. 7A is a side sectional view
- FIG. 7B is a rear view.
- the circuit breaker panel U of the closed switchboard includes a circuit breaker compartment 32 stacked in the front part of the casing 1, a bus compartment 33 provided in the rear part of the casing 31, a cable compartment of the upper stage 34 a and the lower stage 34 b.
- the circuit breaker compartment 32 is a compartment in which the circuit breaker 40 and the control device 56 attached to the back surface of the front door 54 are accommodated.
- the bus compartment 33 accommodates the bus 41 serving as the main circuit.
- the section 41 is arranged, and the bus 41 is connected to each circuit breaker 40.
- the upper and lower cable compartments 34 a and 34 b are sections in which main circuit external cable 42 serving as a main circuit is housed and arranged, and the main circuit external cable 42 is connected to each circuit breaker 40. Further, the circuit breaker panel U is arranged in a plurality of rows in the casing 31 to constitute a part of the closed switchboard unit.
- the air insulation layer A includes a first air insulation layer 39 provided between adjacent side walls of the parallel circuit breaker panels, a second air insulation layer 35 provided on the ceiling of the upper circuit breaker compartment 32, and stacked barriers.
- a partition between the upper and lower circuit breaker compartments 32 that is, a third air insulation layer 36 provided between the upper and lower circuit breaker compartments 32, between the busbar compartment 33 and the rear compartment 34 (not shown), and the partition of the cable compartments of the upper stage 34a and the lower stage 34b.
- a fifth air insulation layer 37 provided between the breaker compartment 32 and the rear compartment 34, and a rear wall portion of the breaker compartment in contact with the busbar compartment 33 and the rear compartment 34.
- Each has the function of blocking the heat from the flame when a fire occurs.
- Each air insulation layer A (the first air insulation layer 39 to the fifth air insulation layer 37) is formed of the following members. That is, the first air insulation layer 39 is formed by two panel partition plates 39a that are adjacent side walls, and the second air insulation layer 35 is formed by making the ceiling plate 35a a double structure, As shown in FIG. 8, the 3 air heat insulation layer 36 is formed of a floor plate 44 (36a in FIG. 7) for fixing the circuit breaker and a bolting cover 45 (36a), and the fourth air heat insulation layer 38 is composed of an upper stage and a lower stage.
- the partition plate 38a between the cable compartments 34a and 34b is formed, and the fifth air insulation layer 37 is formed by two back plates 37a for fixing the circuit breaker between the front and rear compartments.
- the air heat insulation layer A is not limited to gas like air, and uses a nonflammable heat insulating material (glass wool, rock wool, etc.). Is also possible.
- the drawer type circuit breaker 40 that is stacked and mounted in the circuit breaker compartment 32 is provided with a metal barrier B that shields the control devices 56 from the flame at the time of fire.
- the heat insulation mechanism is constituted by the combined use with the air heat insulation layer A.
- the metal barrier B includes a first metal barrier 46, a second metal barrier 47 (47a, 47b), and a third metal barrier 48 (48a, 48b).
- the first metal barrier 46 is a metal barrier attached to the housing 31 side between the circuit breaker arc extinguishing chamber 43 and the front door 54 side.
- the second metal barrier 47 includes a metal barrier 47 a attached to the housing 31 between the circuit breaker arc extinguishing chamber 43 and the circuit breaker secondary junction 51, and a metal barrier 47 b attached to the circuit breaker arc extinguishing chamber 43 side.
- the third metal barrier 48 includes a metal barrier 48a attached to the housing 31 between the main circuit terminal (not shown) of the circuit breaker 40 and the circuit breaker secondary junction 51, and a circuit breaker arc-extinguishing chamber 43 side. It consists of an attached metal barrier 48b.
- the metal barrier 46 as the first metal barrier is provided with a space above the circuit breaker face plate 53 so as not to interfere with the circuit breaker face plate 53.
- the second metal barrier 47 composed of the metal barrier 47 a and the metal barrier 47 b is provided in the upper space S 1 between the circuit breaker arc extinguishing chamber 43 and the circuit breaker secondary junction 51.
- the third metal barrier 48 constituted by the metal barrier 48a and the metal barrier 48b is a rear portion formed at the rear portion of the circuit breaker extinguishing chamber 43 between the main circuit terminal of the circuit breaker 40 and the secondary junction 51. This is provided in the space S2.
- the metal barrier 47a and the metal barrier 47b of the second metal barrier 47, and the metal barrier 48a and the metal barrier 48b of the third metal barrier are slightly spaced as shown in FIG. Opening is made so that the flame is difficult to wrap around.
- the circuit breaker panel U arranges related devices such as a main circuit and a control circuit higher than the expected flooded water level in order to reduce damage caused by flooding. ing. That is, the drawer type circuit breakers 40 are stacked, the upper circuit breaker 40, the bus bar 41, the storage device and the internal members are arranged at the upper level, and the control external line cable and the main circuit external line cable 42 of the upper stage circuit breaker are drawn upward. If the circuit stopped in an accident is to be restored quickly, the important circuit is placed on the upper side, and the upper and lower circuits are completely separated and separated.
- FIG. 11 is a perspective view of the case for explaining the case structure of the closed switchboard according to the fourth embodiment
- FIG. 12 is a perspective view of part A in FIG. 11
- FIG. 13 is a reinforcement used for the base fixing part.
- FIG. 14 is a perspective view showing a state in which a reinforcing member is welded to FIG.
- the closed switchboard shown in FIG. 11 exemplifies a board frame configuration corresponding to the board of FIG. 5 described in the first embodiment, for example.
- the structure of the foundation described below can be applied to any of the cable connection board 100, the circuit breaker housing board 200, and the feeder boards 300 and 400 shown in FIG. Note that the reference numerals of the respective parts are different from those of the parts equivalent to the first to third embodiments.
- the casing 61 of the closed switchboard is formed by a frame made of angle steel or grooved steel, a frame formed by bending a steel plate into an L-shaped or U-shaped cross section, or by bending both ends of a wide steel plate.
- the outer shape is formed into a substantially rectangular parallelepiped shape by welding, bolting, or riveting by appropriately combining the frames that also serve as side plates as vertical frames, width direction frames, and depth direction frames.
- FIG. 11 shows an example, and the structure of the housing will be described below with reference to FIG. For convenience of explanation, the left side of FIG. 11 will be described as the front side. When viewed from the front side, the left-right direction is called the width direction, and the front-rear direction is called the depth direction.
- a vertical frame 62 that also serves as a side plate is formed upright on the left and right sides of the front side, and a vertical frame 63 that is formed in a U-shaped cross section is formed on the left and right sides of the back side.
- the vertical frames 62 and 63 are integrally combined by the width direction frames 64 and 65 connecting the left and right sides and the depth direction frame 66 connecting the front and rear.
- the width direction frame and the depth direction frame are appropriately provided in the middle portion in the vertical direction, and the vertical frame is also appropriately provided in the middle portion in the depth direction. This is represented by reference numerals 64 to 66. Note that the number and shape of each frame in FIG. 11 are examples, and are not limited to the shape in the figure.
- the casing 61 when the casing 61 receives vibration due to an earthquake or the like, in order to prevent the switchboard from being deformed and increase the seismic strength of the switchboard as a whole, for example, a triangular reinforcing plate 67 is welded. Furthermore, the floor surface side of the casing 61 can be fixed with a foundation bolt as described later so that the casing 61 does not fall down due to an earthquake or the like. Since this fixing device portion has the characteristics of the present embodiment, the fixing device portion will be described below.
- FIG. 12 is an enlarged view of a portion A in FIG. 11 and shows a state before a reinforcing member to be described later is attached.
- the vertical frame 62 also serving as a side plate is formed by bending the front side of a plate material into a U-shape, and also serves as a front vertical frame and a side plate.
- the floor board 68 is formed by bending the front surface side into an L shape and also serves as a front width direction frame.
- a frame 70 in the width direction of the floor is provided slightly behind the front surface so as to connect the vertical frame 69 disposed opposite to the left and right sides of the housing 61 and the lower side of the left and right vertical frames 69.
- a through hole 68a having an outer diameter larger than that of the foundation hole 71a is formed in the floor board 68 at a position corresponding to the foundation hole 71a provided in the reinforcing member 71 described below.
- the front left and right sides may use a vertical frame having an L-shaped cross section, a U-shape, or a hollow rectangular shape. You may use the horizontal frame of another member on the side.
- FIG. 13 is a perspective view showing the reinforcing member 71.
- the reinforcing member 71 is made of a thick steel plate that is sufficiently thicker than the thickness of the members constituting each frame.
- the length of the reinforcing member 71 fits within the left and right vertical frames or side plates of the housing 61 with almost no gap. ing.
- the hole 71a for foundations is provided in the longitudinal direction both ends vicinity.
- the shape of the notch part 71b formed in both ends changes with the shape of the vertical frame combined.
- 14 is a perspective view showing a state in which the reinforcing member 71 of FIG. 13 is combined with the frame structure shown in FIG.
- a thick reinforcing member 71 is placed on the floor board 68, and the length direction is brought into contact with the lower inner side of the left and right side frames 62 and the lower side of the vertical frame 69, and the side surface is the floor board.
- the frame is fixed to the front frame side frame portion 68 and the floor surface width direction frame 70 by welding.
- the reinforcing member 71 provided in the lower part on the front side of the casing 61 has been described.
- the reinforcing member 71 is a member for fixing the casing 61 to the base surface, as shown in FIG. It is similarly provided in the lower part on the back side.
- the load of the circuit breaker to be accommodated is greatly applied to the intermediate part in the depth direction, so that the vertical frame in the intermediate part in the depth direction as shown in FIG.
- a similar reinforcing member 71 is provided in accordance with the floor surface width direction frame at the position where the reinforcing member 71 is positioned, and a foundation hole is provided in the vicinity of both ends in the length direction of the reinforcing member 71 and is fixed with a foundation bolt.
- FIG. 15 is a cross-sectional view of the case where the reinforcing member 71 is fixed to the foundation using the foundation bolt 73 from above.
- a buried metal (not shown) having an internal thread that matches the thread of the foundation bolt 73 is embedded on the foundation surface side.
- the foundation bolt 73 is fixed by tightening it through a flat washer 74.
- FIG. 16 shows a case where the anchor bolt 75 is embedded in a predetermined position on the base surface in advance.
- the housing 61 is fixed to the base surface by installing the housing 61 on the base surface in accordance with the anchor bolt 75 and tightening the nut 76 via the flat washer 74 to fix the reinforcing member 71 to the base surface.
- the reinforcing member 71 is made of a thick plate that is thicker than the thickness of the surrounding frame portion to which the reinforcing member 71 is fixed, and is provided over the entire length of the casing 61 in the width direction. For this reason, the rigidity of the floor surface of the closed switchboard can be increased, and even if a large force that shakes the housing 61 due to an earthquake or the like acts, it is possible to prevent the fixing portion of the floor surface of the housing 61 from being deformed. .
- the reinforcing member 71 is provided over the entire length in the width direction of the housing 61 and the foundation holes 71a are provided in the vicinity of both ends in the length direction of the reinforcing member 71, the pair of foundation holes 71a are formed in the same member. Therefore, for example, as in Patent Document 4, compared to the case where individual reinforcing members are welded to the left and right sides of the housing, the dimension between the pair of foundation holes 71a is set at the manufacturing stage of the reinforcing member 71. Can be processed with high accuracy. For this reason, since it is not necessary to adjust the dimension between bolts later, the welding operation and the field installation operation of the housing 61 are facilitated. In addition, the number of parts can be reduced.
- the hole diameter of the foundation hole 71a needs to be a large hole in consideration of dimensional errors.
- it can be a standard bolt hole defined in the standard. This eliminates the need to use a large-diameter, thick-walled special washer for the bolt tightening part, and maintains the high rigidity of the bolt tightening part even when a standard flat washer is used. It becomes possible to do.
- the dimensions of the foundation holes 71a provided in the reinforcing members 71 on the front side and the back side (or the middle part) are different from each other, and the dimensional accuracy is higher than in the case of the left and right foundation holes 71a.
- the foundation hole 71a may be a long hole that is long in the front-rear direction instead of a round hole.
- the closed switchboard fixing device including the casing formed by combining the vertical frame, the width direction frame, and the depth direction frame and having an outer shape formed in a substantially rectangular parallelepiped shape.
- the frame has a pair of vertical frames arranged opposite to the left and right in the width direction of the housing, and a floor side width direction frame provided so as to connect the lower side thereof, and is made of a thick plate that is thicker than the thickness of each frame.
- the reinforcing member for fixing the casing having a length that both ends abut against the pair of vertical frames is disposed on the floor plate of the casing, and welded to the lower side of the pair of vertical frames and the floor-side width direction frame. Therefore, the rigidity of the floor surface of the closed switchboard can be increased, and a closed switchboard having excellent earthquake resistance can be provided.
- the reinforcing members are provided on the front side and the rear side of the housing, and in the middle in the depth direction, in addition to the front and rear of the housing, the floor surface of the middle that is heavily loaded with equipment accommodated in the switchboard Therefore, a closed switchboard with excellent earthquake resistance can be obtained.
- the foundation holes for fixing the reinforcement member to the foundation surface are provided in the vicinity of both ends in the length direction of the reinforcement member, the dimension between the foundation holes in the left and right direction of the housing can be accurately formed. As a result, the welding operation of the housing and the field installation operation are facilitated.
- the size of the hole for the foundation is a standard bolt hole corresponding to the foundation bolt used, it is not necessary to use a special washer for the bolt fastening part, and a standard flat washer of the standard product should be used. Can do.
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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
Description
なお、閉鎖配電盤の上部にケーブル接続用の箱を設けて、その箱の中でケーブルを接続している場合もある。
また、例えば、筐体の内部の前面側に設けられた遮断器室に複数の遮断器を上下に配置し、遮断器室の後方に主母線室とケーブル室を設け、各遮断器の一端側は主母線室に配置された主母線に接続され、他端側はケーブル室において負荷ケーブルに接続されて外部へ引き出されるように構成された配電盤が一般的に知られている(例えば、特許文献1参照)。
このように構成することにより、通電中に温度上昇した室内空気を、ファンにより熱電素子で熱交換しながら外部へ放出することが行われ、更に閉鎖配電盤を数ブロックに分け、火災が発生した場合でも他のブロックへの延焼を防ぐことが行われている。
また、配置スペースを縮小するため、ケーブル接続専用の筐体を設けず、筐体の上部にケーブル接続用の箱を配置した構成では、筐体の上部に大きくて重い箱が設置されるために重心が高くなって耐震性能が低下し、耐震性能を要求されるような場合には、耐震用の補強を設ける必要があった。
更に、特許文献1のように、遮断器室の後部に引出ケーブル用のケーブル室が配置された構成の配電盤では、別途、ケーブル引込用の盤を必要とするという問題点があった。
また、遮断器盤が一部浸水してしまった際でも重要な回路を浸水させず、早期に復電させることができる構造とするのが課題である。
また、厚平板92を溶接する際に、左右及び前後の基礎ボルト間の寸法に合わせ、ボルト穴の間隔を公差以内に入れて溶接するのが難しく、作業時間も掛かっていた。このため、取付誤差及び部品の製作誤差を考え、取付穴92aの穴径は、対応する基礎ボルト93の標準のボルト穴より大きなサイズや長穴とし、かつ、大径で肉厚の厚い特殊なワッシャを用いて締め付けるのが一般的であり、特殊ワッシャを必要としていた。
また、防災性の向上を目指し、遮断器盤の分離性能を向上させ火災及び水災による被害を最小限に抑えることを目的とする。
また、基礎に固定する固定部の剛性を高め耐震性の向上を図る閉鎖配電盤を得ることを目的とする。
なお、本願が対象とする閉鎖配電盤は、通常スイッチギヤと呼ばれているものと同等なので、本願発明では、「閉鎖配電盤」に用語を統一する。
図1において、左側から、上位系統からケーブルにより電力供給を受けるケーブル接続盤100、遮断器VCBが収容された遮断器収容盤200、並びに、遮断器収容盤200と主母線により接続された2台の遮断器VCBを経由してフィーダに電力を供給するフィーダ盤300及び400でユニットが構成されている。なお、図のユニット構成は類型的に示したものであり、これに限定するものではない。
図2の斜視図に示すように、閉鎖配電盤を構成する各盤は、金属製の筐体内に、遮断器や、母線、ケーブル等が収容されており、筐体の天井側、又は、床側に外線ケーブルの引き込み又は引き出しのための開口部を有している。
本願発明は、このように列盤配置される各盤において、設置の作業性や防災性、耐震性の改善を行うものであり、以下にそれぞれの特徴部分について説明する。
以下、実施の形態1の閉鎖配電盤を図に基づいて説明する。図3は、この発明の実施の形態1による閉鎖配電盤の構成を説明する単線接続図である。
図のように、1つの筐体の中で引込用ケーブル、引出用ケーブルを接続することができるケーブル接続盤1と、このケーブル接続盤1に接続される、例えば遮断器等の主回路機器が収容された機器収容盤2とが列盤配置されている。機器収容盤2は、通常、複数の盤から成り、それらが一つのケーブル接続盤1に列盤されて構成されている。
この図3を、先に説明した図1と対比すれば、ケーブル接続盤1は図1のケーブル接続盤100に相当し、機器収容盤2は遮断器収容盤200以下に相当するものである。
一方、引出側ケーブル12は、ケーブル引出室5の上方の引出口3bから引き出されるようになっており、引出側ケーブル12の端子と3相の引出側主母線13とが、側壁に支持碍子10によって支持された接続導体14を介して接続されている。
ケーブル引出室5は、ケーブル引込室4より広いスペースをとっており、接続導体14の配置経路を工夫して、引込用と引出用のケーブルの相順を一致させている。
一方、引出側主母線13は、ケーブル引出室5の仕切板6に近い側の上部に上下方向に並べて配置されている。
なお、遮断器収容盤2の内部構成によっては、ケーブル引込室4とケーブル引出室5の配置は左右逆になる場合もある。
遮断器収容盤2の筐体内は、前面(図で左側)下部側から、下部遮断器室側15a、上部遮断器室15bと区画されており、それぞれの室に遮断器が収容されている。上部遮断器室15bの更に上方は、制御器室16となっている。後部側の上方は引出側主母線室17、下方は引込側主母線室18となっている。各室は仕切板によって仕切られている。
また、引出側主母線室17には、図5中のBに示すように、3相の引出側主母線13が上下方向に配置されており、ケーブル接続盤1側の引出側主母線13と一体に繋がっている。
上下の遮断器は、引込側主母線9と引出側主母線13との間に直列接続されて構成されている。遮断器の端子は、図で紙面に垂直方向に3相分が並んで配置されており、それぞれが分岐母線19を介して各相の母線に接続されている。
なお、遮断器収容盤2内の主回路機器の配置構成は一例を示すものであり、図3に限定するものではない。
更に、ケーブル接続盤を設けないで閉鎖配電盤の筐体の上部にケーブル接続用の箱を配置した従来構成と比較して、盤全体の重心が下がることから、耐震性能が向上する。
図6は、この発明の実施の形態2による閉鎖配電盤のケーブル接続盤の側面図であり、列盤されたとき機器収容盤に接続される側とは反対側から見た図である。盤内の内部構成は、実施の形態1の図2と同等なので、同等部分は同一符号を付して説明は省略する。
図に示すように、ケーブル引込室4、ケーブル引出室5のケーブルが配置される部分に対応して、それぞれケーブル接続作業が可能な大きさの開口部20a,20bを設けて、そこに取り外し可能な作業用カバー21a,21bを取り付けたものである。
作業用カバー21a,21b、及び開口部20a,20bのサイズを接続点検作業が可能な範囲で小さくすることで、作業用カバー21a,21bの重量を軽減でき、容易に取外し,取付けができるので、扉全体を開閉する場合と比較して開閉が容易となる。
次に、実施の形態3による閉鎖配電盤について説明する。本実施の形態は、火災及び水災による被害を軽減させる閉鎖配電盤に関するものである。この閉鎖配電盤は、図1で説明したユニット構成のうち、フィーダ盤300及び400に相当する盤である。但し、内部の機器配置は一例を示すものであり、実施の形態1の遮断器収容盤2と直接接続することを想定した配置にはなっていない。したがって、各構成部品の符号は、実施の形態1と同等部分でも別符号としている。
図7~10に示した実施の形態3における閉鎖配電盤は、火災発生時に炎による熱を遮断する空気断熱層A、引出形の遮断器40の主回路で発生した火災の炎を遮断して制御回路を保護する金属製バリヤBで構成され、遮断器40、主回路、制御回路等の関係機器は、予想浸水水位より上位に配置したものである。空気断熱層Aと金属製バリヤBの具体的箇所と構成については後述する。図7(a)は側面断面図、(b)は背面図である。
なお、遮断器コンパートメント32は、内部に遮断器40と正面扉54の裏面に取付けた制御器具56が収納配置された区画であり、また母線コンパートメント33は、内部に主回路となる母線41が収納配置された区画であり、母線41は各遮断器40と接続されている。
また、上段と下段のケーブルコンパートメント34a、34bは、内部に主回路となる主回路外線ケーブル42が収納配置された区画であり、主回路用外線ケーブル42は各遮断器40に接続されている。
更に、遮断器盤Uは、筐体31内において、複数列配置されて閉鎖配電盤ユニットの一部を構成している。
すなわち、第1空気断熱層39は、隣り合う両側壁である2枚の盤間仕切板39aで形成され、第2空気断熱層35は、天井板35aを2重構造とすることにより形成され、第3空気断熱層36は図8に示すように遮断器固定用の床板44(図7の36a)とボルト止めカバー45(36a)とで形成され、第4空気断熱層38は、上段と下段のケーブルコンパートメント34a,34b間の仕切板38aで形成され、第5空気断熱層37は、前後部のコンパートメント間において遮断器固定用の2枚の背板37aで形成されている。
なお、この実施の形態3では、空気断熱層Aを例示したが、当該断熱層は空気のような気体に限定されるものではなく、不燃性の断熱材(グラスウール、ロックウール等)を用いることも可能である。
第1金属製バリヤ46は、遮断器消弧室43と正面扉54側間において筐体31側に取付けた金属製バリヤである。
第2金属製バリヤ47は、遮断器消弧室43と遮断器2次ジャンクション51間において筐体31側に取付けた金属製バリヤ47aと、遮断器消弧室43側に取付けた金属製バリヤ47bで構成されている。
第3金属製バリヤ48は、遮断器40の主回路端子(図示せず)と遮断器2次ジャンクション51間において筐体31側に取付けた金属製バリヤ48aと、遮断器消弧室43側に取付けた金属製バリヤ48bで構成されている。
また、金属製バリヤ47aと金属製バリヤ47bで構成された第2金属製バリヤ47は、遮断器消弧室43と遮断器2次ジャンクション51間の上部スペースS1に設けたものである。
更に、金属製バリヤ48aと金属製バリヤ48bで構成された第3金属製バリヤ48は、遮断器40の主回路端子と2次ジャンクション51間における遮断器消弧室43の後部に形成された後部スペースS2に設けたものである。
また、第2金属製バリヤ47の金属製バリヤ47aと金属製バリヤ47b、及び第3金属製バリヤの金属製バリヤ48aと金属製バリヤ48bは、互いに重なり合う部分に、図8に示すように少し隙間をあけ、炎が回り込みにくい構造にしている。
これらの金属製バリヤBで遮断器40の主回路と制御回路を分離することで、遮断器の主回路と制御回路とを分離でき、遮断器40の主回路で火災が発生した際に制御器具56、遮断器2次ジャンクション51、制御ケーブル等の制御回路に炎が延焼するのを抑制し被害の拡大を防ぐことができる。
すなわち、引出形の遮断器40を段積し、上段の遮断器40、母線41、収納機器及び内部部材を上位に配置し、制御外線ケーブル、上段遮断器の主回路用外線ケーブル42を上向き引き出しとし、事故で停止した回路を早期に復電させたい場合には、重要な回路を上段側に配置し、上下段の回路を完全に仕切り分離した構造にしたので、遮断器盤Uが一部浸水してしまっても、上段使用可能水位の上限55(母線コンパートメント33に浸水しない水位)までの浸水であれば、浸水による影響もなく上段側の回路をすぐ復電できる盤構造とすることができる。
以下、実施の形態4を図に基づいて説明する。図11は、実施の形態4による閉鎖配電盤の筐体構造を説明するための筐体斜視図であり、図12は、図11のA部の斜視図、図13は基礎固定部に使用する補強部材の斜視図、図14は図12に補強部材を溶接した状態を示す斜視図である。
図11に示す閉鎖配電盤は、盤のフレーム構成としては、例えば、実施の形態1で説明した図5の盤に対応するもを例示している。但し、以下に説明する基礎部の構造は、図1のケーブル接続盤100や遮断器収容盤200、また、フィーダ盤300,400のいずれにも適用できる。
なお、各部の符号は、実施の形態1~3と同等部分でも別符号としている。
なお、図11の各フレームの本数や形状は一例を示すもので有り、図の形状に限定するものではない。
なお、正面側左右は、図のように側板兼用の縦フレーム62とする以外に、断面L字状やコの字状、または中空矩形状の縦フレームを用いても良く、床板68側も前面側に別部材の横フレームを用いても良い。
図14は、図13の補強部材71を図12に示すフレーム構造と組み合わせた状態を示す斜視図である。床板68の上に肉厚の大きな補強部材71を乗せ、長さ方向を筐体61左右の側板兼用縦フレーム62の下部内側、及び縦フレーム69の下部側に当接させ、また、側面は床板68の前面側のフレーム部と床面幅方向フレーム70とに当てて溶接により固定する。
また、図14では、補強部材71は、前後の側面が、床板68の前面フレーム部と床面幅方向フレーム70とに溶接されているが、フレームの配置は一様ではないので、少なくとも一方の側面が幅方向フレームに固定されていればよい。
更に、筐体61が大きくなり収容する機器が増えると、収容する遮断器等の荷重が奥行方向の中間部に大きく掛かるので、図11のように、奥行方向中間部の縦フレーム、及びそれに対応する位置にある床面幅方向フレームに合わせて同様の補強部材71を設け、補強部材71の長さ方向両端部近傍に基礎用穴を設けて基礎ボルトで固定するように構成されている。
図16は、アンカーボルト75が予め基礎面の所定の位置へ埋め込まれている場合である。そのアンカーボルト75に合わせて筐体61を基礎面に設置し、平ワッシャ74を介してナット76を締め付けて、補強部材部71を基礎面に固定することにより筐体61が固定される。
上述のように、補強部材71は、それを固定した周囲のフレーム部の肉厚より厚い厚板からなり、かつ、筐体61の幅方向の全長に亘って設けられている。このため、閉鎖配電盤の床面の剛性を高めることができ、地震等で筐体61を揺るがすような大きな力が作用しても、筐体61の床面の固定部が変形するのを防止できる。
また、補強部材71を筐体61の幅方向の全長に亘って設け、補強部材71の長さ方向両端部近傍に基礎用穴71aを設けたので、一対の基礎用穴71aは同一部材に形成されているため、例えば、特許文献4のように、筐体の左右に個別の補強部材を溶接した場合と比較して、補強部材71の製作段階で、一対の基礎用穴71a間の寸法を精度良く加工できる。このため、後でボルト間寸法の調整をしなくてもよいため、筐体61の溶接作業及び現地据付作業が容易になる。また、部品点数も削減できる。
なお、前面側と背面側(または、中間部)の各補強部材71に設けた基礎用穴71a同士の寸法は、別部材のため寸法精度を上げるのは左右の基礎用穴71aの場合より厳しいが、この場合でも、特許文献4のような4隅が個別の場合に比較すれば、寸法精度を上げやすい。また、基礎用穴71aを丸穴ではなく、前後方向に長い長穴としても良い。
3 筐体 3a 引込口
3b 引出口 4 ケーブル引込室
5 ケーブル引出室 6 仕切板
7 引込側ケーブル 8 支持部材
9 引込側主母線 10 支持碍子
11,14 接続導体 12 引出側ケーブル
13 引出側主母線 15a 下部遮断器室
15b 上部遮断器室 16 制御器室
17 引出側主母線室 18 引込側主母線室
19 分岐母線 20a,20b 開口部
21a,21b 作業用カバー
31 筐体 32 遮断器コンパートメント
33 母線コンパートメント 34 後部コンパートメント
34a 上段のケーブルコンパートメント
34b 下段のケーブルコンパートメント
35 第2空気断熱層 35a 天井板
36 第3空気断熱層 36a 仕切板
37 第5空気断熱層 37a 背板
38 第4空気断熱層 38a 仕切板
39 第1空気断熱層 39a 盤間仕切板
40 遮断器 41 母線
42 主回路用外線ケーブル 43 遮断器消弧室
44 遮断器固定用床板 45 ボルト止めカバー
46 第1金属製バリヤ
47 第2金属製バリヤ(47a,47b)
48 第3金属製バリヤ(48a,48b)
51 遮断器2次ジャンクション 52 磁器碍管
53 遮断器フェースプレート 54 正面扉
55 遮断器盤浸水時の上段側回路使用可能水位の上限
56 制御器具 A 空気断熱層
B 金属製バリヤ S1 上部スペース
S2 後部スペース U 遮断器盤
61 筐体 62,63,69 縦フレーム
64,65 幅方向フレーム 66 奥行方向フレーム
67 補強板 68 床板
68a 貫通穴 70 床面幅方向フレーム
71 補強部材 71a 基礎用穴
71b 切欠部 72 溶接部
73 基礎ボルト 74 平ワッシャ
75 アンカーボルト 76 ナット
00 ケーブル接続盤 200 遮断器収容盤
300,400 フィーダ盤。
Claims (10)
- 主回路機器が収容された機器収容盤と、前記機器収容盤に隣接して列盤配置され、前記主回路機器に対して電力の入出力を行うケーブルが収容されるケーブル接続盤とを備えた閉鎖配電盤において、
前記ケーブル接続盤は、一つの筐体で構成され、内部が仕切板で2分されて、引込側ケーブルが収容されるケーブル引込室と引出側ケーブルが収容されるケーブル引出室とに区画されていることを特徴とする閉鎖配電盤。 - 請求項1記載の閉鎖配電盤において、
前記引込側ケーブルの引込口及び前記引出側ケーブルの引出口は、前記ケーブル接続盤の上面又は下面のいずれか一方に形成されていることを特徴とする閉鎖配電盤。 - 請求項1又は請求項2に記載の閉鎖配電盤において、
前記ケーブル接続盤の前記ケーブル引込室と前記ケーブル引出室のそれぞれには、前記機器収容盤に面する側とは反対側の面に、作業用の開口部、及びその開口部を塞ぐ作業用カバーが設けられていることを特徴とする閉鎖配電盤。 - 上下に段積みした遮断器を収納した遮断器コンパートメントと、前記各遮断器と接続された母線を収納した母線コンパートメントと、前記各遮断器に接続されたケーブルを収納した上段と下段のケーブルコンパートメントとを有し、前記遮断器コンパートメントを配置し、前記母線コンパートメントと前記上段と下段のケーブルコンパートメントとを前記遮断器コンパートメントの後部に配置した筺体を備え、
前記筺体を複数列配置すると共に、並列した筺体の隣り合う両側壁間、前記遮断器コンパートメントの天井部、段積みした前記遮断器間の仕切り部、前記上段のケーブルコンパートメントと前記下段のケーブルコンパートメントとの仕切り部、及び前記母線コンパートメントと前記上段と下段のケーブルコンパートメントのいずれか一方、又は双方に接する前記遮断器コンパートメントの後壁部に、それぞれ遮熱用の断熱層を設けたことを特徴とする閉鎖配電盤。 - 請求項4記載の閉鎖配電盤において、
前記遮断器コンパートメント内において、前記遮断器の主回路と制御回路間に金属製バリヤを設け、前記主回路で発生した火災の炎を遮断して前記制御回路を保護することを特徴とする閉鎖配電盤。 - 請求項4又は請求項5に記載の閉鎖配電盤において、
上段の遮断器の前記主回路、前記制御回路を、前記母線コンパートメントの下端より上位に配置したことを特徴とする閉鎖配電盤。 - 縦フレーム,幅方向フレーム,及び奥行方向フレームが組み合わされて外形が略直方体状に形成された筐体を備えた閉鎖配電盤において、
前記筐体の幅方向の左右に対向配置された一対の縦フレームと、その下部側を繋ぐように設けられた床側幅方向フレームを有し、
前記各フレームの肉厚より厚い厚板からなり、両端が前記一対の縦フレームに当接する長さを有する筐体固定用の補強部材が、前記筐体の床板上に配置されて、前記一対の縦フレームの下部側と前記床側幅方向フレームとに、溶接により固着されていることを特徴とする閉鎖配電盤。 - 請求項7記載の閉鎖配電盤において、
前記補強部材は、前記筐体の前面側と後面側、及び奥行方向の中間部に設けられていることを特徴とする閉鎖配電盤。 - 請求項7又は請求項8に記載の閉鎖配電盤において、
前記補強部材を基礎面に固定するための基礎用穴が、前記補強部材の長さ方向の両端部近傍に設けられていることを特徴とする閉鎖配電盤。 - 請求項9記載の閉鎖配電盤において、
前記基礎用穴の大きさは、使用される基礎ボルトに対応した標準規格のボルト穴であることを特徴とする閉鎖配電盤。
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JP2013526778A JP5680203B2 (ja) | 2011-07-29 | 2012-05-30 | 閉鎖配電盤 |
EP12819479.2A EP2738893B1 (en) | 2011-07-29 | 2012-05-30 | Closed distribution panel |
US14/126,724 US9608413B2 (en) | 2011-07-29 | 2012-05-30 | Enclosed switchboard |
US15/044,449 US9705294B2 (en) | 2011-07-29 | 2016-02-16 | Enclosed switchboard |
US15/044,520 US9768590B2 (en) | 2011-07-29 | 2016-02-16 | Enclosed switchboard |
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US14/126,724 A-371-Of-International US9608413B2 (en) | 2011-07-29 | 2012-05-30 | Enclosed switchboard |
US15/044,520 Division US9768590B2 (en) | 2011-07-29 | 2016-02-16 | Enclosed switchboard |
US15/044,449 Division US9705294B2 (en) | 2011-07-29 | 2016-02-16 | Enclosed switchboard |
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Also Published As
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JP2015043693A (ja) | 2015-03-05 |
US20160164266A1 (en) | 2016-06-09 |
JP6009523B2 (ja) | 2016-10-19 |
US20160164264A1 (en) | 2016-06-09 |
US9768590B2 (en) | 2017-09-19 |
US9705294B2 (en) | 2017-07-11 |
EP2738893A4 (en) | 2015-04-01 |
EP2738893A1 (en) | 2014-06-04 |
EP2738893B1 (en) | 2017-02-01 |
JPWO2013018429A1 (ja) | 2015-03-05 |
US9608413B2 (en) | 2017-03-28 |
US20140118890A1 (en) | 2014-05-01 |
JP2015043694A (ja) | 2015-03-05 |
JP5855211B2 (ja) | 2016-02-09 |
JP5680203B2 (ja) | 2015-03-04 |
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