JP4339372B2 - Vacuum insulated switchgear - Google Patents

Description

  The present invention relates to a vacuum-insulated switchgear, and is particularly used in a power receiving / transforming facility, which is small and light, has high performance and reliability, and has improved vacuum workability for switching unit on-site. It relates to switchgear.

  In power receiving facilities, vacuum circuit breakers to cut off load currents or accident currents, disconnectors and ground switches to ensure operator safety during load maintenance and inspection, and system voltage / current detection A closed type switchboard (referred to as a switchgear) in which a detection device to be operated and a protective relay are housed in a container is installed.

  In this type of switchgear, if the circuit breaker exceeds the guaranteed number of operations, or if an unexpected situation occurs, it will be replaced. An opening / closing part is arranged on the door, and the operation drive part of the opening / closing part is led out of the insulating container through the case. When replacing the opening / closing part in the circuit breaker, the case is removed from the insulating container, There is one that pulls out the portion from the insulating container in the horizontal direction (for example, see Patent Document 1).

JP 2000-232709 A

  In recent power receiving and transforming facilities, user demands are diversified. For example, since the type of load and the operating conditions differ depending on the purpose of use, the distribution system is planned in consideration of the required safety, reliability, operational maintenance, and future load increase.

  In this power distribution plan, consideration must be given to the control of the circuit breakers, disconnectors, grounding switches, etc. that comprise the power receiving / transforming equipment, and the monitoring and measurement of voltage, current, power, etc. In this case, it is an important technical problem for the user to reduce the installation space of the device and its control and monitoring / measurement device to suppress investment for installation. In addition to this technical problem, not only installation work, maintenance and inspection work, and operability during normal operation, but also removal and replacement work and work on the part in the event of a failure of part of the equipment. Consideration of time is also an important technical issue.

  For this reason, as a switchgear manufacturer, not only the above-mentioned user's switchgear size and weight reduction, but also installation work, maintenance and inspection work, operability during normal operation, etc., part of the equipment should break down. There is an urgent need to quickly provide a switchgear that satisfies the requirements such as easy removal and replacement of the failed part at the site and not requiring much time for the work.

  The present invention has been made on the basis of the above-mentioned matters, and is small and light in weight and high in reliability. Besides, installation work, maintenance inspection work, operability during normal operation, etc., as well as part of equipment should be avoided. An object of the present invention is to provide a vacuum insulated switchgear that can be easily removed or replaced on the spot when a failure occurs.

In order to achieve the above object, a vacuum insulated switchgear according to the present invention is formed by a top plate, a bottom plate, and a side plate that form a casing, and is partitioned on the back side of the casing, and has a cable partition having a cable inside. And a bus bar section that is disposed at the center upper part of the housing and has a bus bar parallel to the front surface of the housing, and an upper side plate and a bottom plate provided on the top plate constituting the housing. A low voltage control partition formed on the front side of the housing by a first intermediate side plate and a second intermediate side plate detachably provided between the lower side plate, the upper side plate and the lower side plate; A front door provided on the front side so that it can be opened in one side, a low voltage control unit installed in the back of the front door and housed in the low voltage control section, a side member constituting the frame, and the side member On the front side of the side member. Via the first intermediate side plate of the low voltage control section, the upper part of the front side of the side member is the upper side plate of the low voltage control section, and the lower part of the front side of the side member is the low voltage control A switch section that is detachably mounted on the second intermediate side plate of the partition section, and that the back side of the side member is detachably mounted on the side plate of the cable partition section, and is arranged below the bus section section. The switch partition section is a unit separable from the housing, and the switch partition section formed as a unit is selectively connected to the bus in the bus partition section and the cable in the cable partition section. It is characterized in that it is provided in the housing so as to be able to come into contact with and separate from the housing .

  According to the present invention, it is small, lightweight and highly reliable, and of course, installation work, maintenance inspection work, operability during normal operation, etc. It is possible to provide a vacuum insulated switchgear that can be easily removed and replaced, and that can shorten the working time.

Hereinafter, embodiments of the vacuum insulated switchgear of the present invention will be described with reference to the drawings.
1 to 9 show an embodiment of a vacuum insulated switchgear according to the present invention. FIG. 1 is a side view of an embodiment of a vacuum insulated switchgear according to the present invention, and FIG. FIG. 3 is a perspective view showing a state in which the front door of one embodiment of the vacuum insulation switchgear of the present invention shown in FIG. 1 is opened, FIG. Is a plan view of FIG. 3, FIG. 5 is a perspective view of the opening / closing section unit constituting one embodiment of the vacuum insulated switchgear of the present invention shown in FIG. 3, and FIG. 6 is a perspective view of the present invention shown in FIG. The perspective view which looked at the opening-and-closing part unit which comprises one embodiment of a vacuum insulation switchgear from the lower part, FIG. 7 is a partial cross section of the opening-and-closing part unit which comprises one embodiment of the vacuum insulation switchgear of this invention FIG. 8 is a side view showing the vacuum insulated switchgear of the present invention shown in FIG. Perspective view of a large state of the opening the front door of the embodiment, FIG. 9 is a plan view of FIG.

  1 to 3, a housing 1 for a vacuum insulated switchgear includes a bus section 1a, a switch section 1b, a cable section 1c, and a low voltage control section 1d that are each partitioned by a ground metal plate. ing. In addition, a front door 1 e that can be opened on one side is provided on the front side of the housing 1, and an upper rear door 1 f and a lower back door 1 g that can be opened on one side are provided on the rear side of the housing 1.

  The bus section 1a is disposed on the upper side near the center of the casing 1 in the depth direction (left-right direction in FIG. 1). The switch section 1b is arranged below the bus section 1a. The cable partition 1c is disposed on the back side of the housing 1 (left side in FIG. 1). The low voltage control section 1d is arranged on the upper rear side of the front door 1e and is located at a position facing the bus section 1a.

  Each of the partition portions is basically formed by a plate-like bottom plate 2 made of a ground metal plate, a top plate 3, and left and right side plates that block between the bottom plate 2 and the top plate 3. However, on the left and right sides of the cable partition 1c, the upper and lower sides of the side plate 4 are bolted to the flange 3a formed on the periphery of the top plate 3 and the flange 2a formed on the periphery of the bottom plate 2, respectively. It is fixed and closes the side of the cable partition 1c.

  As shown in FIG. 3, a partitioning plate 5 is provided at the boundary between the upper portion of the cable partitioning portion 1c and the busbar partitioning portion 1a. A three-phase solid-insulated bus 6 is disposed in the bus partition 1a in parallel with the front surface of the housing 1 via a connection bushing 6a (in a direction perpendicular to the paper surface in FIG. 1). The bus bar 6 is gas-less by solid insulation, ensuring handling and safety.

  In this example, the switch section 1b has a unit configuration in which a vacuum two-point three-position type switch (vacuum two-point three-position circuit breaker), a grounding switch, and an operating device are assembled to a frame. And are carried out of the housing 1 during parts replacement and maintenance. This detailed description will be described later with reference to FIGS.

  The cable section 1c is connected to a fixed contact of a vacuum two-point three-position switch (vacuum two-point three-position breaker), and a cable connection terminal introduced into the cable section 1c A T-type cable head rotatably provided on the terminal, two cables connected to the terminal by the T-type cable head, and a system protection current transformer provided on the outer periphery of the terminal. . In this example, the cable is introduced from the lower part of the housing 1 to the cable partition part 1c. In addition, a fuse and a single-phase winding type measurement transformer are connected to the terminal. The fuse and the single-phase winding type measurement transformer are arranged on the upper side in the cable partition 1c. In addition, illustration is abbreviate | omitted on drawing for each apparatus in the cable division part 1c mentioned above.

  A side plate that closes the left and right sides of the low voltage control section 1d is composed of an upper side plate 7, a lower side plate 8, a first intermediate side plate 9, and a second intermediate side plate 10. The upper portion of the upper side plate 7 is fixed to the flange 3a of the top plate 3 with bolts, and the lower portion of the lower side plate 8 is fixed to the flange 2a of the bottom plate 2 with bolts. The lower part of the upper side plate 7 is fixed with bolts at the contact surfaces of the flanges with the upper part of the first intermediate side plate 9, and the lower part of the first intermediate side plate 9 is connected to the upper part of the second intermediate side plate 10. The contact surface of the flange is fixed with a bolt, and the lower surface of the second intermediate side plate 10 is fixed with the bolt on the contact surface of each flange with the upper portion of the lower side plate 8. As will be described later, the first intermediate side plate 9 is detachably attached to the side portion on the front door side of the frame body of the unitized switch compartment section 1b with bolts.

  The front door 1e constituting the low-voltage control section 1d includes a first hinge 11 having a pivoting function detachably provided on one first intermediate side plate 9 (right side in FIG. 3), and one upper side plate. 7 (right side of FIG. 3) and a second hinge 12 provided on one of the lower side plates 8 (right side of FIG. 3) having functions of turning and sliding (moving the casing 1 in the front-rear direction). It is possible to move. As shown in FIGS. 8 and 9, the second hinge 12 releases the fixing of the first hinge 11 to the first intermediate side plate 9, thereby moving the front door 1 e in the front-rear direction of the housing 1. Enables movement and increases the amount of movement of the casing 1 in the opening direction (right direction in FIG. 8, upward direction in FIG. 9) to enable the switch compartment section 1 b to be pulled out forward. It has the function to ensure the opening space for.

  Returning to FIG. 1 and FIG. 3, in the low voltage control section 1d, as shown in FIG. 3, a low voltage controller 1dc and a protection relay 1dab are attached to the back of the front door 1e. On the front of the front door 1e, as shown in FIG. 1, an alarm display unit 1ea for displaying a ground fault, a short circuit accident, a capacitor abnormality, a vacuum pressure abnormality, etc., various operation switch units 1eb, and an emergency manual handle operation The parts 1ec are sequentially arranged from the top to the bottom.

  The alarm display unit 1ea includes, for example, a display unit that displays a ground fault or short-circuit accident, an interlock valid / invalid display unit, a capacitor abnormality display unit, a vacuum pressure abnormality display unit, a capacitor charge completion display unit, etc. It has been. The operation switch unit 1eb includes, for example, an operation changeover switch between a vacuum two-point three-position type switch and a grounding switch, a far / direct change-over switch, a vacuum two-point three-position type switch. Disconnection switch, Vacuum 2-point 3-position switch position indicator lamp, Vacuum 2-point 3-position switch mechanical position indicator, Ground switch grounding / switching operation switch, Ground switch A mechanical position display unit and terminals for detecting and detecting phases are provided.

Next, the configuration of the unitized switch compartment section 1b described above will be described with reference to FIGS.
In this example, the switch section 1b has a unit configuration in which a vacuum two-point three-position type switch (vacuum two-point three-position type disconnect switch), a grounding switch, and an operating device are assembled to a frame. As described above, the vacuum two-point cut three-position type switch 13 and the ground switch 14 arranged in the switch section 1b are integrally molded with epoxy resin as shown in FIG. Yes. As a result, the switch part is unitized to reduce the size and weight. This unitized switch part has a phase separation structure, and is arranged in parallel with the front surface of the housing 1. Further, a shielding layer is arranged between the phases, so that the occurrence of a short circuit accident between the phases is suppressed. Yes. The outer surface of the mold described above is grounded by the applied conductive paint, and the safety of contact is ensured.

  The vacuum two-point three-position type switch 13 described above includes a vacuum vessel provided with an insulating cylinder, two fixed electrodes respectively housed in the vacuum vessel, and movable electrodes thereof. Is configured. In this example, the fixed electrode is disposed on the upper side, and the movable electrode that contacts and separates from the fixed contact is disposed on the lower side.

  One fixed electrode in the switch 13 is detachably connected to the bus 6 in the bus section 1a via a connection bushing 15 that can be introduced into the bus section 1a. In addition, one fixed electrode in the switch 13 is connected to a T-shaped cable head of the cable in the cable partition 1c through a connection bushing 16 that can be introduced into the cable partition 1c. .

  On the front side of the casing 1 close to the switch 13, an electromagnet drive unit 17 for a switch whose driving direction is the vertical direction (vertical direction in FIG. 7) and an electromagnet drive unit 17 for a ground switch are arranged. The electromagnet driving units 17 and 18 are connected to the switch 13 and the ground switch 14 via operation mechanisms 19 and 20, respectively. The electromagnet driving units 17 and 18 and the operation mechanism units 19 and 20 constitute an operating device.

  As shown in FIGS. 5 and 6, the above-described switch 13, ground switch 14, electromagnet drive units 17 and 18, and operation mechanism units 19 and 20 include a bottom member 21 and a bottom member 21. The side members 22 and 22 provided on the left right side, the plurality of connecting members 23 for connecting these side members 22 and 22, and the upper back side of the side members 22 and 22, respectively, It is housed and arranged in a frame made up of fixing members 24 that are detachably fixed to the left and right side plates 4.

  When the devices such as the switch 13, the ground switch 14, the electromagnet driving units 17, 18, and the operation mechanism units 19, 20 are arranged in the frame, the center of gravity of the frame after the arrangement is the left-right front-rear direction of the frame It is considered to be the center of each. The setting of the center of gravity of the frame is for avoiding a fall when the unitized switch compartment section 1b is carried out of the housing 1 and carried into the housing 1 as much as possible.

  The side members 22 and 22 constituting the frame of the switch section 1b correspond to the first side 22a corresponding to the side of the switch 13 and the ground switch 14 and the electromagnet drive units 17 and 18, respectively. Second side portion 22b. The second side portion 22b extends from the first side portion 22a to the front side of the housing 1 so as to correspond to the first intermediate side plate 9 on the side portion of the low voltage control partition portion 1d. As shown in FIG. 3, the first intermediate side plate 9 is detachably fixed to the outer surface side of the second side portion 22b with bolts. The first intermediate side plate 9 is removed from the side members 22 and 22 constituting the frame of the switch compartment section 1b after the switch compartment section 1b is unloaded from the housing 1, and is It is assembled again between the side plate 7 and the second intermediate side plate 10. The rear side end portion of the first side portion 22a and the fixing member 24 are detachably fixed to the left and right side plates 4 of the cable partition portion 1c by bolts.

  In FIG.5 and FIG.6, the 1st intermediate | middle side plate 9 used as the side plate of the low voltage control division part 1d from the 2nd side part 22b in the side members 22 and 22 which comprise the frame of the switch division part 1b is shown. The removed state is shown.

  Returning to FIG. 3, a plate member 24 is detachably provided on the front portion of the bottom plate 2 of the housing 1, and this plate member 24 is a carry-out device (to be described later) for carrying in / out the switch compartment section 1 b. ) Is detachably provided on the front portion of the bottom plate 2 of the housing 1 as described above so that it does not become an obstacle when entering or leaving the housing 1. A support member 25 that primarily supports the switch compartment section 1b is detachably provided inside the front side of the bottom plate 2 of the housing 1. When the support member 25 carries in / out the switch compartment section 1b, the switch section section 1b contacts and separates the connection bushing 15 of the switch compartment section 1b and the bus bar 6 in the bus section section 1a. Is moved up and down in the housing 1, and at this time, the bottom member 21 of the switch partition part 1b is brought into contact with the bottom surface to prevent the switch partition part 1b from overturning.

Next, the carrying-out operation | movement from the housing | casing 1 of one Embodiment of the vacuum insulation switchgear of this invention mentioned above is demonstrated using FIG. 8 thru | or FIG.
When a part of the equipment of the switch compartment section 1b is to be removed or replaced in the event of a failure, first, the upper rear door 1f and the lower rear door 1g are opened, and the cable compartment section 1c is opened. And the connection bushing 16 of the bus section 1a are disconnected.

  Next, the front door 1e is opened, and the wirings between the electromagnet driving units 17 and 18 of the switch section 1b and the devices of the low voltage control section 1d are removed.

  Next, as shown in FIG. 8, after releasing the first hinge 11 of the front door 1 e from the first intermediate side plate 9, the second hinge 12 of the front door 1 e is moved forward of the housing 1. And opening the front door 1e further to secure an opening space for enabling the switch compartment section 1b to be pulled out forward of the housing 1.

  Next, the connection between the lower part of the upper side plate 7 serving as the side plate of the low voltage control partition part 1d and the upper part of the first intermediate side plate 9 is released by removing the bolt, and the first part serving as the side plate of the low voltage control partition part 1d. The connection between the lower part of the first intermediate side plate 9 and the upper part of the second intermediate side plate 10 is released by removing the bolt, and the connection between the lower part of the second intermediate side plate 10 and the upper part of the lower side plate 8 is Remove to release.

  3 is removed from the bottom plate 2 of the housing 1 and the entrance of the movable transfer device (lifter) A into the housing 1 is removed. Secure. In this example, the conveying device A includes a traveling body A1, a guide frame A2 fixed on the traveling body A1, a fork-like support arm A3 that moves up and down along the guide frame A2, and an operation lever A4. (See FIGS. 11 to 13).

  Next, as shown in FIG. 11, the transfer device A is moved into the housing 1, and the support arm A <b> 3 is positioned on the lower side of the switch section 1 b, and then lifted to move the support arm A <b> 3. The support height is adjusted so as to come into contact with the lower surface of the closed vessel section 1b.

  Next, the connection between the rear side end portion of the first side portion 22a of the switch section 1b and the fixing member 24 and the left and right side plates 4 of the cable section 1c is released by removing the bolts, and then the low The second intermediate side plate 10 serving as the side plate of the voltage control section 1 d is extracted from between the first intermediate side plate 9 and the lower side plate 8. By these operations, the switch compartment section 1b is separated from the housing 1 and placed on the support arm A3 of the transport device A.

  Next, the switch section 1b is lowered by the support arm A3 of the transfer device A, and as shown in FIG. 12, the connection bushing 15 on one fixed electrode side of the switch 13 and the bus in the bus section 1a. Disconnect the electrical connection to 6.

  Next, as shown in FIG. 13, the switch compartment section 1 b can be removed from the housing 1 and carried out by moving the transfer device A to the rear side (right side in FIG. 13).

  Thereafter, the first intermediate side plate 9 and the second intermediate side plate 10 are reassembled and placed between the upper side plate 7 and the lower side plate 8 as necessary.

  When assembling the switch compartment section 1b whose parts have been repaired to the housing 1, it is possible to perform the work by reversing the work procedure described above.

  In the embodiment of the present invention described above, the switch 13 having the heaviest weight among the devices accommodated in the housing 1 and the operation mechanism portions 19 and 20 thereof are shown in FIGS. Since the casing 1 is disposed in the space below the intermediate portion in the height direction of the casing 1, the center of gravity of the entire switch gear can be set low. As a result, the safety of carrying and installing the switchgear is improved. In addition, the fall can be suppressed even in the event of an earthquake after installation, and its safety can be ensured.

  In one embodiment of the present invention, the switch 13 is disposed in the housing 1 such that the movable electrode is positioned below the fixed electrode, and the operation device for operating the movable electrode is also provided. Since it is arranged in the housing 1 on the lower side in the height direction, when the operating device breaks down or is damaged due to some factor, the movable contact of the switch is moved downward from the fixed contact by its own weight. Move to. Thereby, a fail safe function is exhibited and safety can be improved.

  Furthermore, in one embodiment of the present invention, in addition to the above-described configuration, the bus bar 6 is disposed above the switch 13, so that the operating device is not positioned in the vicinity of the bus bar connecting portion. Thereby, the safety | security at the time of bus-bar connection work can be improved.

  In one embodiment of the present invention, the bus 6 is connected to the bus bar connecting portion by introducing the bus bar 6 into the housing 1 from the side of the housing 1 and placing the bus bar 6 above the bus bar connecting portion. As shown in FIG. 1, the bus 6 and its connecting portion are arranged above the switch 13 so that the chest of the operator is about When the front door 1e is opened and the low voltage control unit 1d on the back of the front door 1e is moved to the outside of the housing 1 by opening the front door 1e. The work space can be secured and the worker can perform the connection work of the busbar connection portion in a stable state without being forced to take an unreasonable posture.

  Furthermore, the above-described bus bar connection work is performed after arranging the required number of switch gears in a row, but the bus bar connection work should be performed with the built-in devices that have been tested for shipping mounted in the switch gear. Can improve reliability.

  Furthermore, the low-voltage control unit 1d provided on the back surface of the front door 1e is unitized, and the low-voltage control unit 1d is detachably attached to the back surface of the front door 1e. A single operation test can be easily carried out, and the replacement work of the protective lure or the like housed in the low voltage control unit 1d is facilitated.

  Moreover, according to one embodiment of the present invention, the switch unit and the operation unit for operating the switch are made into one switch unit (switch partition section 1b), so that the switch unit is removed at once. Therefore, the workability can be improved and the working time can be shortened.

  In addition, since the switch and the controller that operates this switch affect each other in operation, even if only one of the three phases of the switch breaks down, the switch of one phase is replaced. Therefore, it is necessary to readjust the controller. For this reason, when the structure is such that the vacuum switch can be replaced for each phase from the switchgear panel, it is necessary to adjust the switchgear with the actuator in the switchgear panel after replacement. Since it is necessary to work, workability is poor, and confirmation is difficult, but in the present invention, it is a structure that can be removed and replaced in a lump in a state where the switch and the operation unit are combined into a unit, After removing it from the panel, it is possible to work in a state where sufficient work space is secured, workability can be improved, and confirmation work after work becomes easy, so a highly reliable switch unit is provided. be able to.

  Furthermore, in the embodiment of the present invention, if a unit that has already been adjusted for the switch and its operating unit is prepared as a spare part of the switch unit that becomes the switch partition section 1b, it should be replaced in the unlikely event. Even when the need arises, it is possible to replace the switch unit with a spare part and minimize the recovery work time after the failure.

  Further, in the embodiment of the present invention, the position of the solid insulated bus arranged on the upper part of the switch unit is moved by making the switch unit vertically movable in the panel. The switch unit can be attached and detached. Since the switch unit is a part that connects between the adjacent panel and the panel, for example, if the position of the solid insulation bus is moved during replacement work, the switch unit is naturally sound. Since it becomes necessary to work on the busbar connection portion of the panel, the work amount and the work time are increased, but this point is solved.

  Also, in the adjacent sound board, once the busbar connection part is removed and replaced, and the busbar is reconnected, a soundness confirmation test is required thereafter, so the inspection time also increases. According to this embodiment, the switch unit can be moved up and down, and it is not necessary to move the position of the solid insulation bus, so that only the relevant panel to be replaced needs to be carried out. Shortening can be achieved.

  Furthermore, in the embodiment of the present invention, the frame of the switch unit is shared as a part of the frame constituting the switchgear panel, so that the number of parts can be reduced as a matter of course. , It is necessary to secure a space for removing the switch unit in the switch gear panel, and removing the switch unit increases the overall size of the switch gear, but part of the frame that constitutes the switch gear By sharing, it is not necessary to secure a space for removing the switch unit in the switchgear panel, and the overall size of the switchgear can be reduced.

  Further, in the embodiment of the present invention, by providing a second intermediate side plate that can be attached to and detached from the housing corresponding to the lower side portion of the switch unit, when removing and replacing the switch unit, By removing the second intermediate side plate from the housing, a space for raising and lowering the switch unit can be secured. Therefore, even when a part of the frame constituting the switchgear of the switch unit is shared, the switch unit can be moved up and down.

  Furthermore, in the embodiment of the present invention, a support member that supports the switch unit when the switch unit is raised and lowered is provided in the housing on the lower surface side of the switch unit, so that the switch from the inside of the panel by the conveying device is provided. Unit removal and replacement can be performed easily. In addition, in the case of this system that supports the lower part of the switch unit, there is no work space at the upper part of the switch unit with the busbar, so it does not affect other equipment stored in the panel, The switch unit can be removed and replaced.

  Moreover, in embodiment of this invention, since the board | plate material was provided in part on the front door 1e side in the floor board 2 of the housing | casing 1 so that attachment or detachment was possible, by removing the board | plate material at the time of removal and replacement | exchange of a switch unit. Since there is no portion that obstructs the entry of the transfer device, the transfer device can be easily moved in and out of the panel in the removal and replacement work of the switch unit to the casing (panel).

  Furthermore, in the embodiment of the present invention, a plurality of door opening and closing hinges provided to open and close the front door 1e of the switch gear, the first hinge 11 that allows only the rotating operation, the rotating operation, the front and rear, left and right operations. Since one or more second hinges 12 that allow the rotation are used, the front door 1e moves in the front-rear and left-right directions because there is the first hinge 11 that allows only the rotation operation during normal operation. It cannot be used, and can be operated with a door opening / closing operation (rotation operation) similar to a general switchboard. On the other hand, at the time of removal / replacement of the switch unit, the front hinge 1e can be moved in the front / rear / right / left directions by the second hinge 12 by removing the first hinge 11 that allows only the rotation. When the switch unit is carried out and carried in and out of the panel, the front door 1e is operated in the front-rear and left-right directions, so that the carry-out and carry-in space for the switch unit can be secured.

  Further, in the embodiment of the present invention, when the front door 1e of the switch gear is moved in the front-rear and left-right directions, the support bracket for supporting the weight of the front door 1e between the front door 1e and the floor board 2 By installing, the load applied to the hinge can be reduced, and the strength can be maintained even if a small hinge is used.

  In the above-described embodiment, a plate material is provided on the front portion of the bottom plate 2 of the casing 1 shown in FIG. 3 in order to secure an entrance for the movable transfer device (lifter) A into the casing 1. In the case of the configuration of the transport device (lifter) A, particularly the configuration in which the supporting arm can be inserted into the housing 1, it is necessary to provide the plate member 24 in a removable manner. Absent.

  In the above-described embodiment, the support member 25 that is provided in the front side of the bottom plate 2 of the housing 1 and primarily supports the switch partitioning portion 1b is provided on the front side of the bottom plate 2 of the housing 1. It may be installed permanently or at the time of work.

  Furthermore, in the above-described embodiment, an example of a vacuum two-point cut three-position type switch (vacuum two-point cut three-position breaking disconnect switch) is shown as the switch in the switch section 1b. If the one electrode of the switch in the container partition section 1b is a switch of a type that is electrically connected to and separated from the bus 6 in the bus partition section 1a in the vertical direction, the above-described vacuum two-point cut three-position switch It is not limited to a vacuum vessel (vacuum two-point cut three-position type disconnect switch), but other types of switches can be used.

  Moreover, although the electromagnet drive parts 17 and 18 were used as a drive part which comprises the operation device in the switch partition part 1b, it is also possible to set it as another drive part.

  In addition, in the above-mentioned embodiment, although the example which has arrange | positioned the bus-bar division part 1a above the switch division part 1b was demonstrated, also about the example which has arrange | positioned the bus-bar division part 1a below the switch division part 1b, Similarly, the present invention can be applied.

It is a side view of one embodiment of the vacuum insulation switchgear of the present invention. It is a vertical front view of one Embodiment of the vacuum insulation switchgear of this invention shown in FIG. It is a perspective view which shows the state which opened the front door of one Embodiment of the vacuum insulation switchgear of this invention shown in FIG. It is a top view of the state which opened the front door of one Embodiment of the vacuum insulation switchgear of this invention shown in FIG. It is the perspective view which looked at the switch partition part (opening-closing part unit) which comprises one Embodiment of the vacuum insulation switchgear of this invention shown in FIG. 3 from upper direction. It is the perspective view which looked at the switch part division part (opening-closing part unit) which comprises one Embodiment of the vacuum insulation switchgear of this invention shown in FIG. 3 from the downward direction. It is a side view which shows the switch partition part (switch part unit) which comprises one Embodiment of the vacuum insulation switchgear of this invention in a partial cross section. It is a perspective view which shows the state which enlarged the opening of the front door of one Embodiment of the vacuum insulation switchgear of this invention shown in FIG. It is a top view of the state which expanded the opening of the front door of one Embodiment of the vacuum insulation switchgear of this invention shown in FIG. It is a perspective view which shows the state which opened the front door for the exchange operation in one Embodiment of the vacuum insulation switchgear of this invention shown in FIG. It is a perspective view which shows the state which inserted the conveying apparatus in the housing | casing for the exchange operation in one Embodiment of the vacuum insulation switchgear of this invention shown in FIG. It is a perspective view which shows the state which supported the switch partition part with the conveying apparatus for the exchange operation in one Embodiment of the vacuum insulation switchgear of this invention shown in FIG. It is a perspective view which shows the state which carried out the switch partition part out of the housing | casing with the conveying apparatus for the exchange operation in one Embodiment of the vacuum insulation switchgear of this invention shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing | casing 1a Bus line partition part 1b Switch part partition part 1c Cable partition part 1d Low voltage control partition part 1e Front door 1f Upper back door 1g Lower back door 2 Bottom plate 3 Top plate 4 Side plate 5 Partition plate 6 Bus 6a Connection Bushing 7 Upper side plate 8 Lower side plate 9 First intermediate side plate 10 Second intermediate side plate 11 First hinge 12 Second hinge 13 Vacuum double-break three-position switch 14 Ground switch 17 Electromagnet drive unit 18 Electromagnet Drive unit 19 Operation mechanism unit 20 Operation mechanism unit

Claims (6)

The top and bottom plates and side plates that form the housing define a compartment on the back side of the housing, and a cable compartment having a cable inside,
A bus section that is disposed at the upper center of the housing and has a bus parallel to the front surface of the housing;
A first intermediate side plate and a second intermediate side plate that are detachably provided between an upper side plate provided on the top plate constituting the housing, a lower side plate provided on the bottom plate, and the upper side plate and the lower side plate, A low voltage control section formed on the front side of the housing;
A front door provided on the front side of the housing so as to be openable on one side;
A low voltage control unit installed on the back of the front door and housed in the low voltage control section;
It has a side member constituting the frame body, a switch and an operating device arranged in the side member, and through a first intermediate side plate of the low voltage control section provided on the front side portion of the side member. The upper part of the front side of the side member is detachably attached to the upper side plate of the low voltage control section, and the lower part of the front side of the side member is detachably attached to the second intermediate side plate of the low voltage control section. And a switch compartment section that is detachably mounted on a side plate of the cable partition section and disposed below the bus section section,
The switch compartment section is a unit that can be separated from the housing, and the switch compartment section that is unitized can be selectively connected to and separated from the bus in the bus section and the cable in the cable section. Provided in the housing
Vacuum insulated switchgear characterized by that. The vacuum insulated switchgear according to claim 1,
The switch compartment section is configured to share the side member of the switch compartment section as a part of the side plate of the housing.
Vacuum insulated switchgear characterized by that. The vacuum insulated switchgear according to claim 2,
The switch compartment section is arranged in the casing by moving the casing in the front-rear direction and the vertical direction by a movable transfer device.
Vacuum insulated switchgear characterized by that. The vacuum insulated switchgear according to any one of claims 1 to 3 ,
A vacuum insulated switchgear characterized in that a support member for supporting the switch compartment section moved downward is provided in a bottom plate of the casing. The vacuum insulated switchgear according to any one of claims 1 to 4 ,
A vacuum insulating switchgear characterized in that a plate member is further detachably provided on the front side of the bottom plate in the housing. The vacuum insulated switchgear according to any one of claims 1 to 5 ,
A front door provided on the front side of the housing is provided so as to be openable and closable on the housing by a first hinge that allows only a rotating operation and a second hinge that allows a rotating operation and front / rear / left / right operation,
A vacuum insulated switchgear, wherein the first hinge is detachably attached to the housing.

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