CN102110954A - High-capacity upper and lower isolated solid switch cabinet - Google Patents
High-capacity upper and lower isolated solid switch cabinet Download PDFInfo
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- CN102110954A CN102110954A CN 201010588271 CN201010588271A CN102110954A CN 102110954 A CN102110954 A CN 102110954A CN 201010588271 CN201010588271 CN 201010588271 CN 201010588271 A CN201010588271 A CN 201010588271A CN 102110954 A CN102110954 A CN 102110954A
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- ground connection
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a high-capacity upper and lower isolated solid switch cabinet, and belongs to switch equipment of an alternating current distribution network. The high-capacity upper and lower isolated solid switch cabinet comprises at least one unit cabinet, and each unit cabinet comprises a three-phase high-voltage vacuum switch unit, an upper isolated switch unit, a lower isolated switch unit, a lower grounding switch unit, a bus bushing, a wire inlet and outlet bushing and an operation mechanism. The vacuum switch unit is arranged inside an insulating barrel, and the insulating barrel consists of an upper isolating cover, a lower isolating cover and an insulating cover. The upper and lower isolating covers are made of a polycarbonate material, and the insulating cover is made of an epoxy resin material; an upper isolating blade, a lower isolating blade and a lower grounding blade are arranged inside the upper and lower isolating covers respectively; the bus bushing and the wire inlet and outlet bushing are arranged at the upper and lower ends of the insulating barrel respectively; and the operation mechanism is arranged on the external side of a supporting plate on the uncovered surface of the insulating barrel. By placing electrical equipment of the switch cabinet inside the insulating barrel made of the solid insulating material and adopting a unit cabinet structural style, the switch cabinet is non-toxic and harmless, has a small volume, is convenient to install, is safe in use, saves the resources and prolongs the service life.
Description
Technical field
The present invention relates to the switchgear of ac distribution network, refer to that especially a kind of big capacity isolates the solid switch cabinet up and down.
Background technology
In the prior art, be used to have gas isolated ring main unit, adopt gas that high-pressure vacuum switch is sealed insulation; Because the gas SF6 that adopts has greenhouse effect carrying out having toxicity behind the arc extinguishing, and easily leak.And air insulation unit switch cabinet electrified body is exposed, is subjected to the erosion of air, dust, easily causes the corrosion of electrified body, has reduced the grade of insulation, very easily cause human casualty accident, and volume is very big, and inconvenience is installed, and causes the very big wasting of resources.
Summary of the invention
The object of the present invention is to provide a kind of big capacity to isolate the solid switch cabinet up and down, its nontoxic volume is little, easy for installation safe in utilization, economize on resources and prolonged useful life.
To achieve these goals, technical solution of the present invention is: a kind of big capacity is isolated the solid switch cabinet up and down, comprise at least one unit cabinet, described each unit cabinet comprises the three-phase high-voltage vacuum switch unit, on, following Disconnecting switch unit, following earthed switch unit, three bus casings, three pass in and out thread casing and operating mechanism, wherein said every phase high-pressure vacuum switch unit is sealed in the insulation bucket, described insulation bucket is by last, the cuboid bucket that following cage and insulating cover are formed, on the open face of described insulation bucket supporting bracket is installed, on described, following cage be installed on respectively described insulating cover on, the lower end, described insulating cover is made by epoxide resin material, on described, following insulating cover is made by makrolon material, described upper end of going up insulating cover reaches down, and the lower end of insulating cover is respectively arranged with a bus casing and a turnover thread casing, described going up between insulating cover and the bus casing is provided with the copper bar pressing plate successively from top to bottom and is connected copper bar, described turnover thread casing inner chamber upper end is equipped with sleeve pipe T shape contact, described operating mechanism is arranged at the outside of insulation bucket and links to each other with the insulation bucket by supporting bracket, on described, following Disconnecting switch unit is respectively by on three, under isolate on blade and one, following isolation transmission mechanism is formed, described down earthed switch unit is made up of three following ground connection blades and a following ground connection transmission mechanism, described on, under isolate blade and down the ground connection blade all be arranged in the insulation bucket.
The big capacity of the present invention is isolated the solid switch cabinet up and down, wherein said insulating cover is the cover body that is made of rectangular female cap and square tube shape vacuum bubbles cover one, described lid is made of first latch of giving prominence in cover plate and one week of cover forward end, the surface of described cover plate is provided with several inserts screwed holes, on the described cover plate, the lower surface is respectively equipped with an inserts screwed hole, described cover forward end face middle part is provided with a rectangle projection, described vacuum bubbles cover is vertically installed in the front of described projection, described projection is provided with groove, install on the described groove and isolate T shape contact, described groove communicates with the rear end face of described vacuum bubbles cover, described vacuum bubbles cover surface of internal cavity is provided with screen, the inner chamber middle part of described vacuum bubbles cover is provided with annular boss, the bottom surface that is positioned at the vacuum bubbles cover at described annular boss place is provided with two embedded screwed holes, the bottom surface that is positioned at the vacuum bubbles cover of described annular boss front is provided with the rectangle hole that is flexible coupling, placed the soft copper band on the described hole that is flexible coupling, be fixed with T shape contact below the described soft copper band, on the described vacuum bubbles cover, end is respectively equipped with one second latch about following, described second latch and described first latch link into an integrated entity, the front end face left and right sides of described vacuum bubbles cover is respectively equipped with a seal groove, respectively be provided with an inserts screwed hole in the described seal groove, the wall of described vacuum bubbles cover is provided with several inserts screwed holes, the center, rear surface of described cover plate is provided with a dome, and the surface is respectively equipped with a square concave surface about described vacuum bubbles cover.
The big capacity of the present invention is isolated the solid switch cabinet up and down, wherein said going up below cage is, the left side and the right side are uncovered cuboid cover body, the rectangular recess that connects copper bar is placed to having one in the described cage top of going up, the angle of described groove is an arc transition, before the described upward cage, the lower left quarter angle of back is an arc transition, described groove intracavity bottom evenly is provided with three round recesseds downwards along the horizontal direction at groove center, be provided with a slot between two the described round recesseds in the left side, it is the conduit of U-shaped that described groove outer circumference is arranged with a circle longitudinal section, described conduit outer rim is provided with several embedded screwed holes, the last cage upper surface that is positioned at described embedded screwed hole left part is provided with two inserts screwed holes, the last cage upper surface that is positioned at described rectangular recess right part is provided with two inserts screwed holes, a described left side of going up cage, before right-hand member reaches, the bottom of back is provided with flange, before being positioned at described upward cage, be respectively equipped with second on the flange of bottom, back, three slide grooves, the preceding cell wall height of described second slide groove is greater than back cell wall height, the preceding cell wall height of described the 3rd slide groove is less than back cell wall height, the described right part flange height of cage of going up is greater than the left part flange height, be positioned at a described left side of going up cage, be respectively equipped with circle first slide groove and a seal groove on the flange of right-hand member, described first slide groove is plugged on the first latch top of described insulating cover, be provided with several inserts screwed holes in the described seal groove, on between described first slide groove and described conduit in the cage top of chamber be provided with a long chute, be provided with several reinforcements in the long chute of described upward cage, before the described upward cage, be respectively equipped with a circle reinforcement on the back, before the described upward cage, the bottom of back is respectively equipped with three slotted holes.
The big capacity of the present invention is isolated the solid switch cabinet up and down, above wherein said time cage is, the left side and the right side are uncovered cuboid cover body, before the described cage down, the upper left quarter angle of back is an arc transition, described cage bottom surface down is to having a rectangle prism, the upper surface of described prismatic wall is provided with several degree of depth grooves, described prismatic middle part is provided with cylindrical channel, described prismatic bottom surface is provided with several inserts screwed holes, described cage bottom surface down is provided with four inserts screwed holes, the described left side of cage down, before right-hand member and the following cage, the top of back is provided with flange, before the described flange, be respectively equipped with three slotted holes on the rear wall, be positioned at a described cage left side down, be respectively equipped with first slide groove and seal groove on the flange of right-hand member, described first slide groove is plugged on the bottom of first latch of described insulating cover, be provided with several inserts screwed holes in the described seal groove, described seal groove and the described seal groove of going up cage are spirally connected fixing by bolt, before being positioned at described cage down, be respectively equipped with second on the flange on top, back, three slide grooves, the preceding cell wall height of described second slide groove is greater than back cell wall height, the preceding cell wall height of described the 3rd slide groove is less than back cell wall height, be provided with several reinforcements between described prismatic left lateral sides and the following cage bottom surface, the following cage inner chamber bottom surface that is positioned at described prismatic right side is provided with several reinforcements, before the described cage down, be respectively equipped with a circle reinforcement on the back, the following cage inner chamber bottom surface that is positioned at the described first slide groove right side is provided with several reinforcements.
The big capacity of the present invention is isolated the solid switch cabinet up and down, wherein said every phase high-pressure vacuum switch unit comprises insulated tension pole, spline shaft, the spline connecting lever, connect connecting lever and vacuum interrupter, the stationary contact of described vacuum interrupter is connected with the described isolation T shape contact of going up by bolt, described vacuum interrupter is enclosed in the insulating cover admittedly, the movable contact head end of described vacuum interrupter is connected with an end of soft copper band and an end of insulated tension pole by bolt, the other end of described insulated tension pole is with to be connected connecting lever hinged, one end of the other end of described connection connecting lever and spline connecting lever is hinged, the vertical connection of one end of the other end of described spline connecting lever and spline shaft, described spline shaft is fixed on the splined shaft bracing frame, described spline shaft is connected with operating mechanism, and described three-phase high-voltage vacuum switch unit has a spline shaft.
The big capacity of the present invention is isolated the solid switch cabinet up and down, the wherein said isolation transmission mechanism of going up comprises three connecting levers, go up for three and isolate pull bar, last isolation power transmission shaft, first, two bevel gears and last isolated operation axle, each described two ends that isolate pull bar of going up is hinged with an end and the described middle part that isolates blade of going up of a connecting lever respectively, the described upper end that go up to isolate blade with embed that to go up the T shape contact that described on the cage inner chamber be connected copper bar hinged, the other end of three described connecting levers all with last vertical connection of isolation power transmission shaft, the described isolation power transmission shaft of going up is fixed on the isolation power transmission shaft supporting seat, described going up isolated installation first bevel gear on the power transmission shaft, described first bevel gear and the engagement of second bevel gear, install an end of isolated operation axle on described second bevel gear, the described other end of going up the isolated operation axle is connected with described operating mechanism.
The big capacity of the present invention is isolated the solid switch cabinet up and down, wherein said isolation transmission mechanism down comprises three connecting levers, three following isolation pull bars, under isolate power transmission shaft, the 3rd, four bevel gears reach isolated operation axle down, the two ends of each described down isolation pull bar are hinged with the described middle part that isolates blade down of an end of a connecting lever and respectively, the upper end of the described blade of isolation down is hinged with the T shape contact that the described soft copper band that is embedded in the insulating cover bottom is fixed, the other end of three described connecting levers all with isolate down that power transmission shaft is vertical to be connected, the described power transmission shaft of isolating down is fixed on down on the isolation power transmission shaft supporting seat, the described isolation down installed the third hand tap gear on the power transmission shaft, described third hand tap gear and the engagement of the 4th bevel gear, described the 4th bevel gear goes up installs an end of isolated operation axle down, and the described other end of isolated operation axle down is connected with described operating mechanism.
The big capacity of the present invention is isolated the solid switch cabinet up and down, wherein said ground connection transmission mechanism down comprises three connecting levers, three following ground insulation pull bars, following ground connection power transmission shaft, the 5th, six bevel gears, following ground connection operating axis and ground connection T shape contact, the two ends of each described down ground insulation pull bar are hinged with the middle part of an end of a connecting lever and a described ground connection blade down respectively, described ground connection T shape contact is embedded in the bottom of insulating cover, the upper end and the ground connection T shape contact of described ground connection blade down are hinged, the other end of three described connecting levers all with following vertical connection of ground connection power transmission shaft, described ground connection power transmission shaft down is fixed on down on the ground connection power transmission shaft supporting seat, on the described ground connection power transmission shaft down the 5th bevel gear is installed, described the 5th bevel gear and the engagement of the 6th bevel gear, described the 6th bevel gear goes up installs an end of ground connection operating axis down, and the described other end of ground connection operating axis down is connected with described operating mechanism.
The big capacity of the present invention is isolated the solid switch cabinet up and down, and wherein each described bus casing is straight tube or L shaped bend pipe, and each described turnover thread casing is straight tube or L shaped bend pipe.
The big capacity of the present invention is isolated the solid switch cabinet up and down, and the rated operational voltage of wherein said switch cubicle is 10KV, and rated operational current is 1250A, and the specified short circuit current that cut-offs is 31.5KA.
After adopting such scheme, the big capacity of the present invention is isolated the solid switch cabinet up and down and is adopted cellular structure, each unit three-phase is a loop, thereby realization modular construction, scheme combination is flexible, variation, the loop Installation and Debugging are convenient, adopt totally-enclosed solid encapsulation high-pressure vacuum switch unit, can not produce creepage phenomenon, thereby improved the grade of insulation, on fail safe and energy savings performance, significant effect is arranged, owing to completely cut off air, aqueous vapor, dust and cold and hot source of the gas, the corrosion that has slowed down power source body effectively, stablized the output of supply voltage, the maintenance times of minimizing equipment reduces expense cost, has prolonged the useful life of this solid insulation switch cabinet.
Description of drawings
Below in conjunction with accompanying drawing embodiments of the invention are described further.
Fig. 1 is the main TV structure cutaway view (separating brake position) that the big capacity of the present invention is isolated the solid switch cabinet up and down;
Fig. 2 is the right TV structure schematic diagram that the big capacity of the present invention is isolated the solid switch cabinet up and down;
Fig. 3 is the plan structure schematic diagram that the big capacity of the present invention is isolated the solid switch cabinet up and down;
Fig. 4 is the main TV structure schematic diagram of the big capacity of the present invention insulating cover of isolating the solid switch cabinet up and down;
Fig. 5 is that the D-D of Fig. 4 is to cross-sectional schematic;
Fig. 6 is that the E-E of Fig. 5 is to cross-sectional schematic;
Fig. 7 is that the F-F of Fig. 5 is to cross-sectional schematic;
Fig. 8 is that the G-G of Fig. 5 is to cross-sectional schematic;
Fig. 9 is the right TV structure schematic diagram of the big capacity of the present invention insulating cover of isolating the solid switch cabinet up and down;
Figure 10 is that the H-H of Fig. 9 is to cross-sectional schematic;
Figure 11 is that the master that the big capacity of the present invention is isolated the last cage of solid switch cabinet up and down looks generalized section;
Figure 12 is the backsight structural representation that the big capacity of the present invention is isolated the last cage of solid switch cabinet up and down;
Figure 13 is the left TV structure schematic diagram of the big capacity of the present invention last cage of isolating the solid switch cabinet up and down;
Figure 14 is the right TV structure schematic diagram of the big capacity of the present invention last cage of isolating the solid switch cabinet up and down;
Figure 15 is the plan structure schematic diagram that the big capacity of the present invention is isolated the last cage of solid switch cabinet up and down;
Figure 16 is that the A-A of Figure 11 is to the sectional structure schematic diagram;
Figure 17 is that the B-B of Figure 11 is to the sectional structure schematic diagram;
Figure 18 is that the C-C of Figure 15 is to the sectional structure schematic diagram;
The big capacity of Figure 19 the present invention is isolated the main TV structure schematic diagram of the following cage of solid switch cabinet up and down;
The big capacity of Figure 20 the present invention is isolated the right TV structure schematic diagram of the following cage of solid switch cabinet up and down;
The big capacity of Figure 21 the present invention is isolated the plan structure schematic diagram of the following cage of solid switch cabinet up and down;
The big capacity of Figure 22 the present invention isolate up and down the solid switch cabinet following cage look up structural representation;
Figure 23 is that the I-I of Figure 21 is to the sectional structure schematic diagram;
Figure 24 is that the J-J of Figure 22 is to the sectional structure schematic diagram;
Figure 25 is that the K of Figure 19 is to the partial structurtes schematic diagram.
Embodiment
As shown in Figure 1 to Figure 3, the big capacity of the present invention is isolated the solid switch cabinet up and down and is comprised at least one unit cabinet, each unit cabinet comprises three-phase high-voltage vacuum switch unit 1, goes up Disconnecting switch unit 2, Disconnecting switch unit 3, earthed switch unit 4, three bus casings 5, three turnover thread casings 6 and operating mechanisms 7 down down, the rated operational voltage of this switch cubicle is 10KV, rated operational current is 1250A, and the specified short circuit current that cut-offs is 31.5KA; Every phase high-pressure vacuum switch unit 1 is sealed in the insulation bucket 8, the cuboid bucket that insulation bucket 8 is made up of last cage 9, following cage 10 and insulating cover 11; On the insulation bucket 8 right-hand member open face supporting bracket 20 is installed, last cage 9 and following cage 10 be installed on respectively insulating cover 11 on, the lower end, insulating cover 8 is made by epoxide resin material, last insulating cover 9 and following insulating cover 10 are to be made by makrolon material, in the upper end of last cage 9 and the lower end of following cage a bus casing 5 and a turnover thread casing 6 are installed respectively, bus casing 5 can be straight tube or L shaped bend pipe, be provided with copper bar pressing plate 40 from top to bottom successively and be connected copper bar 30 between bus casing 5 and the last cage 9, the inner chamber upper end of turnover thread casing 6 is equipped with sleeve pipe T shape contact 50, when bus casing 5 is straight tube with turnover thread casing 6, advance, go out lead can for go out under enterprising or under go out mode on advancing, when bus casing 5 is L shaped bend pipe with turnover thread casing 6, advance, go out lead can for go out after advancing or laggard before go out mode, go out mode under enterprising among the figure, operating mechanism 7 is arranged at the outside of insulation bucket 8 and links to each other with insulation bucket 8 by supporting bracket 20;
Extremely shown in Figure 10 in conjunction with Fig. 4, insulating cover 11 is to overlap 112 one by rectangular female cap 111 and square tube shape vacuum bubbles to constitute, lid 111 is made of first latch of giving prominence in cover plate 1111 and cover plate one week of 1111 front ends 1112, the surface of cover plate 1111 is provided with several inserts screwed holes, on the cover plate 1111, the lower surface is respectively equipped with an inserts screwed hole, cover plate 1111 front end faces middle part is provided with a rectangle projection 1113, vacuum bubbles cover 112 is vertically installed in the front of projection 1113, projection 1113 is provided with groove 1114, install on the groove 1114 and isolate T shape contact 18, groove 1114 communicates with the rear end face of vacuum bubbles cover 112, vacuum bubbles is overlapped 112 surface of internal cavity and is provided with screen 1121, the inner chamber middle part of vacuum bubbles cover 112 is provided with annular boss 1122, the bottom surface that is positioned at the vacuum bubbles cover 112 at annular boss 1122 places is provided with two embedded screwed holes, the bottom surface that is positioned at the vacuum bubbles cover 112 of annular boss 1122 fronts is provided with the rectangle hole 1123 that is flexible coupling, be flexible coupling and placed soft copper band 16 on the hole 1123, be fixed with T shape contact 161 below the soft copper band 16, on the vacuum bubbles cover 112, end is respectively equipped with one second latch 1125 about following, second latch 1125 and first latch 1112 link into an integrated entity, the front end face left and right sides of vacuum bubbles cover 112 is respectively equipped with a seal groove 1126, respectively be provided with an inserts screwed hole in the seal groove 1126, the wall of vacuum bubbles cover 112 is provided with several inserts screwed holes, the center, rear surface of cover plate 1111 is provided with a dome 1116, and the surface is respectively equipped with a square concave surface 1117 about the vacuum bubbles cover.
Extremely shown in Figure 180 in conjunction with Figure 11, below last cage 9 is, the left side and the right side are uncovered cuboid cover, last cage top is to having a rectangular recess 91, the angle of groove 91 is an arc transition, before the last cage 9, the lower left quarter angle of back is an arc transition, be provided with in the groove 911 and connect copper bar 97, groove 91 intracavity bottoms evenly are provided with three round recesseds 911 downwards along the horizontal direction at groove 91 centers, be provided with a slot 912 between two round recesseds 911 in the left side, it is the conduit 913 of U-shaped that groove 91 outer circumference are arranged with a circle longitudinal section, conduit 913 outer rims are provided with several embedded screwed holes, last cage 9 upper surfaces that are positioned at embedded screwed hole left part are provided with two inserts screwed holes, last cage 9 upper surfaces that are positioned at rectangular recess 91 right parts are provided with two inserts screwed holes, the left side of last cage 9, before right-hand member reaches, the bottom of back is provided with flange 92, before being positioned at cage 9, be respectively equipped with second slide groove 921 and the 3rd slide groove 922 on the flange of bottom, back, the preceding cell wall height of second slide groove 921 is greater than back cell wall height, the preceding cell wall height of the 3rd slide groove 922 is less than back cell wall height, the right part flange height of last cage 9 is greater than the left part flange height, be positioned at the left side of cage 9, be respectively equipped with circle first slide groove 93 and a seal groove 94 on the flange of right-hand member, first slide groove 93 is plugged on first latch, 1112 tops of insulating cover 11, be provided with several inserts screwed holes in the seal groove 94, on between first slide groove 93 and conduit 913 in the cage 9 top of chamber be provided with a long chute 95, be provided with several reinforcements in the long chute 95 of last cage 9, before the last cage 9, be respectively equipped with a circle reinforcement on the back, before the last cage 9, the bottom of back is respectively equipped with three slotted holes 96;
Extremely shown in Figure 25 in conjunction with Figure 19, above following cage 10 is, the left side and the right side are uncovered cuboid cover, before the following cage 10, the upper left quarter angle of back is an arc transition, following cage 10 bottom surfaces are to having a rectangle prism 101, the upper surface of prismatic 101 walls is provided with several degree of depth grooves 1011, prismatic 101 middle parts are provided with cylindrical channel 1012, prismatic 101 bottom surfaces are provided with several inserts screwed holes, following cage 10 bottom surfaces are provided with four inserts screwed holes, the left side of following cage 10, before right-hand member and the following cage 10, the top of back is provided with flange 102, before the flange 102, be respectively equipped with three slotted holes 1021 on the rear wall, be positioned at cage 10 left sides down, be respectively equipped with first slide groove 1022 and seal groove 1023 on the flange of right-hand member, first slide groove 1022 is plugged on the bottom of first latch 1112 of insulating cover 11, be provided with several inserts screwed holes in the seal groove 1023, seal groove 1023 is spirally connected fixing with the seal groove 94 of last cage by bolt, before being positioned at following cage 10, be respectively equipped with second slide groove 1024 and the 3rd slide groove 1025 on the flange on top, back, the preceding cell wall height of second slide groove 1024 is greater than back cell wall height, the preceding cell wall height of the 3rd slide groove 1025 is less than back cell wall height, be provided with several reinforcements between prismatic 101 left lateral sides and following cage 10 bottom surfaces, the following cage 10 inner chamber bottom surfaces that are positioned at prismatic 101 right sides are provided with several reinforcements, before the following cage 10, be respectively equipped with a circle reinforcement on the back, the following cage 10 inner chamber bottom surfaces that are positioned at first slide groove, 1022 right sides are provided with several reinforcements.
Every phase high-pressure vacuum switch unit 1 comprises insulated tension pole 12, spline shaft 13, spline connecting lever 14, connect connecting lever 15 and vacuum interrupter 17, the stationary contact of vacuum interrupter 17 is connected with last isolation T shape contact 18 by bolt, vacuum interrupter 17 is enclosed in the insulating cover 11 admittedly, the movable contact head end of vacuum interrupter 17 is connected with an end of soft copper band 16 and an end of insulated tension pole 12 by bolt, the other end of insulated tension pole 12 is with to be connected connecting lever 15 hinged, the other end of connection connecting lever 15 and an end of spline connecting lever 14 are hinged, the vertical connection of one end of the other end of spline connecting lever 14 and spline shaft 13, spline shaft 13 is fixed on the splined shaft bracing frame, spline shaft 13 is connected with operating mechanism 7, three-phase high-voltage vacuum switch unit 1 has a spline shaft 13, the shared spline shaft 13 of three-phase high-voltage vacuum switch unit;
Last Disconnecting switch unit 2 is made up of three last isolation blades 21 and the last transmission mechanism 22 of isolating, going up isolation blade 21 for three all is arranged in the insulation bucket 8, last isolation transmission mechanism 22 comprises three connecting levers 221, go up for three and isolate pull bar 222, last isolation power transmission shaft 223, first bevel gear 224, second bevel gear 225 and last isolated operation axle 226, the two ends that isolate pull bar 222 on each are hinged with an end and a middle part of going up isolation blade 21 of a connecting lever 221 respectively, the upper end of last isolation blade 21 is hinged with the T shape contact that is connected copper bar 30 that cage 9 inner chambers upper end is gone up in embedding, the other end of three connecting levers 221 all with last 223 vertical connections of isolation power transmission shaft, last isolation power transmission shaft 223 is fixed on isolates on the power transmission shaft supporting seat, first bevel gear 224 is installed on the last isolation power transmission shaft 223, first bevel gear 224 and 225 engagements of second bevel gear, install an end of isolated operation axle 226 on second bevel gear 225, the other end of last isolated operation axle 226 is connected with operating mechanism 7;
Following Disconnecting switch unit 3 comprises that three are isolated blade 31 and a following isolation transmission mechanism 32 down, and following isolation blade 31 is arranged in the insulation bucket 8.Following isolation transmission mechanism 32 comprises three connecting levers 321, three following isolation pull bars 322, under isolate power transmission shaft 323, third hand tap gear 324, the 4th bevel gear 325 reaches isolated operation axle 326 down, the two ends of isolation pull bar 322 are hinged with an end and a middle part that isolates blade 31 down of a connecting lever 321 respectively under each, the fixing T shape contact 161 of the upper end that isolates blade 31 down and the soft copper band 16 that is embedded in insulating cover 11 bottoms is hinged, the other end of three connecting levers 321 all with is down isolated 323 vertical connections of power transmission shaft, under isolate power transmission shaft 323 and be fixed on down and isolate on the power transmission shaft supporting seat, under isolate on the power transmission shaft 323 third hand tap gear 324 be installed, third hand tap gear 324 and 325 engagements of the 4th bevel gear, an end of isolated operation axle 326 down is installed on the 4th bevel gear 325, and the other end of following isolated operation axle 326 is connected with operating mechanism 7;
Following earthed switch unit 4 comprises three following ground connection blades 41 and a following ground connection transmission mechanism 42, and following ground connection blade 41 is arranged in the insulation bucket 8.Following ground connection transmission mechanism 42 comprises three connecting levers 421, three following ground insulation pull bars 422, following ground connection power transmission shaft 423, the 5th bevel gear 424, the 6th bevel gear 425, following ground connection operating axis 426 and ground connection T shape contact 427, down the two ends of ground insulation pull bar 422 are hinged with the middle part of an end of a connecting lever 421 and a following ground connection blade 41 respectively for each, ground connection T shape contact 427 is embedded in the bottom of insulating cover 11, the upper end of following ground connection blade 41 and ground connection T shape contact 427 are hinged, the other end of three connecting levers 421 all with following 423 vertical connections of ground connection power transmission shaft, following ground connection power transmission shaft 423 is fixed on down on the ground connection power transmission shaft supporting seat, the 5th bevel gear 424 is installed on the following ground connection power transmission shaft 423, the 5th bevel gear 424 and 425 engagements of the 6th bevel gear, an end of ground connection operating axis 426 down is installed on the 6th bevel gear 425, and the other end of following ground connection operating axis 426 is connected with operating mechanism 7.
As shown in Figure 1, the big capacity of the present invention is isolated the power operation process of solid switch cabinet up and down: the opening button of pressing operating mechanism 7, operating mechanism 7 drives spline shaft 13 and rotates, the spline connecting lever 14 that spline shaft 13 drives three-phase high-voltage vacuum switch 1 turns clockwise, spline connecting lever 14 drives connection connecting lever 15 and moves right with insulated tension pole 12, and the dynamic and static contact of vacuum interrupter 17 is separated; Operating mechanism 7 drives are simultaneously gone up isolated operation axle 226 and are rotated counterclockwise, driving upward by first bevel gear 224 and 225 engagements of second bevel gear, isolation power transmission shaft 223 rotates, last isolation power transmission shaft 223 drives three connecting levers 221 and rotates, three connecting levers 221 drive three respectively and go up 222 motions of isolation pull bar, three last isolation pull bars 222 drive three last blades 21 of isolating respectively and move right, isolation blade 21 is separated with last isolation T shape contact 18, isolate sub-switching operation in the realization; Isolated operation axle 326 clockwise rotated under operating mechanism 7 drove simultaneously, by third hand tap gear 324 and 325 engagements of the 4th bevel gear, drive and isolate power transmission shaft 323 rotations down, under isolate power transmission shaft 323 and drive three connecting levers 321 and rotate, three connecting levers 321 drive three following isolation pull bar 322 motions respectively, three following isolation pull bars 322 drive three respectively and isolate blade 31 down to left movement, and isolation blade 31 is separated with sleeve pipe T shape contact 50, realize isolating down sub-switching operation; Ground connection operating axis 426 clockwise rotated under operating mechanism 7 drove simultaneously, by the 5th bevel gear 424 and 425 engagements of the 6th bevel gear, driving down, ground connection power transmission shaft 423 rotates, following ground connection power transmission shaft 423 drives three connecting levers 421 and rotates, three connecting levers 421 drive three following ground insulation pull bar 422 motions respectively, three following ground insulation pull bars 422 drive three following ground connection blades 41 respectively to left movement, and ground connection blade 41 is contacted with sleeve pipe T shape contact 50, realize contact of earth operation down; The outage separating brake process of whole switch has been finished in this a series of actions.
The big capacity of the present invention is isolated the power-on servicing process of solid switch cabinet up and down: press operating mechanism 7 switch knobs, operating mechanism 7 drives spline shaft 13 and rotates, three spline connecting levers 14 that spline shaft 13 drives three-phase high-voltage vacuum switch 1 are rotated counterclockwise, spline connecting lever 14 drive connection connecting levers 15 to left movement, make the dynamic and static contact contact of vacuum interrupter 17 with insulated tension pole 12; Operating mechanism 7 drives are simultaneously gone up isolated operation axle 226 and are clockwise rotated, driving upward by first bevel gear 224 and 225 engagements of second bevel gear, isolation power transmission shaft 223 rotates, last isolation power transmission shaft 223 drives three connecting levers 221 and rotates, three connecting levers 221 drive three respectively and go up 222 motions of isolation pull bar, three last pull bars 222 of isolating drive three last blades 21 of isolating respectively to left movement, isolation blade 21 is contacted with last isolation T shape contact 18, isolate closing operation in the realization; Isolated operation axle 326 rotated counterclockwise under operating mechanism 7 drove simultaneously, by third hand tap gear 324 and 325 engagements of the 4th bevel gear, drive and isolate power transmission shaft 323 rotations down, under isolate power transmission shaft 323 and drive three connecting levers 321 and rotate, three connecting levers 321 drive three following isolation pull bar 322 motions respectively, isolate blade 31 under three following isolation pull bars 322 drive three respectively and move right, isolation blade 31 is contacted with sleeve pipe T shape contact 50, realize isolation closing operation down; Ground connection operating axis 426 rotated counterclockwise under operating mechanism 7 drove simultaneously, by the 5th bevel gear 424 and 425 engagements of the 6th bevel gear, driving down, ground connection power transmission shaft 423 rotates, following ground connection power transmission shaft 423 drives three connecting levers 421 and rotates, three connecting levers 421 drive three following ground insulation pull bar 422 motions respectively, three following ground insulation pull bars 422 drive three following ground connection blades 41 respectively and move right, and ground connection blade 41 is separated with sleeve pipe T shape contact 50, realize ground connection sub-switching operation down; The energising making process of whole switch has been finished in this a series of actions.
The big capacity of the present invention is isolated up and down the solid switch cabinet and is had the following advantages:
1, adopted cellular structure, it is a loop that each unit adopts three-phase, thereby realizes modular construction, and the scheme combination is flexible, diversified, and the loop installation and debugging are convenient, can carry out the scene transposing;
2, structural design uniqueness of the present invention, bus casing 5 and inlet-outlet sleeve 6 unified standards can be realized going out before the advancing of lead, last-in, last-out, go out on enterprising, advance the kinds of schemes such as to go out and make up down down;
3, adopt up and down switch with double-isolation, accomplish visual fracture, greatly strengthened power supply reliability, have the sense of security, operation and power supply reliability height are obtained very high economic benefit;
4, owing to adopted totally-enclosed solid encapsulation high-pressure vacuum switch, can not produce creepage phenomenon, thereby improve the grade of insulation, in security and energy savings performance significant effect is arranged, and the switch cubicle volume dwindle greatly than the traditional switch cabinet; Owing to completely cut off air, aqueous vapor, dust and cold and hot source of the gas, the corrosion that has effectively slowed down power source body, the output of having stablized supply voltage reduces the maintenance times of equipment, and the decrease cost cost has prolonged service life of ring main unit.
More than describing is explanation of the invention, is not that limited range of the present invention is referring to claim to the restriction of invention, and in the situation of spirit of the present invention, the present invention can do any type of modification.
Claims (10)
1. a big capacity is isolated the solid switch cabinet up and down, comprise at least one unit cabinet, described each unit cabinet comprises three-phase high-voltage vacuum switch unit (1), on, following Disconnecting switch unit (2,3), following earthed switch unit (4), three bus casings (5), three pass in and out thread casing (6) and operating mechanism (7), it is characterized in that: described every phase high-pressure vacuum switch unit is sealed in the insulation bucket (8), described insulation bucket (8) is by last, following cage (9,10) and the cuboid bucket formed of insulating cover (11), on the open face of described insulation bucket (8) supporting bracket (20) is installed, on described, following cage (9,10) be installed on respectively described insulating cover (11) on, the lower end, described insulating cover (8) is made by epoxide resin material, on described, following insulating cover (9,10) make by makrolon material, described upper end of going up insulating cover (9) reaches down, and the lower end of insulating cover (10) is respectively arranged with a bus casing (5) and a turnover thread casing (6), described going up between insulating cover (9) and the bus casing (5) is provided with copper bar pressing plate (40) from top to bottom successively and is connected copper bar (30), described turnover thread casing (6) inner chamber upper end is equipped with sleeve pipe T shape contact (50), described operating mechanism (7) is arranged at the outside of insulation bucket (8) and links to each other with insulation bucket (8) by supporting bracket (20), on described, following Disconnecting switch unit (2,3) respectively by on three, under isolate blade (21,31) and on one, following isolation transmission mechanism (22,32) form, described earthed switch unit (4) down is made up of three following ground connection blades (41) and a following ground connection transmission mechanism (42), on described, under isolate blade (21,31) and down ground connection blade (41) all be arranged in the insulation bucket (8).
2. big capacity as claimed in claim 1 is isolated the solid switch cabinet up and down, it is characterized in that: described insulating cover (11) is the cover body that is made of rectangular female cap (111) and square tube shape vacuum bubbles cover (112) one, described lid (111) is made of first latch of giving prominence in cover plate (1111) and one week of cover plate (1111) front end (1112), the surface of described cover plate (1111) is provided with several inserts screwed holes, on the described cover plate (1111), the lower surface is respectively equipped with an inserts screwed hole, described cover plate (1111) front end face middle part is provided with a rectangle projection (1113), described vacuum bubbles cover (112) is vertically installed in the front of described projection (1113), described projection (1113) is provided with groove (1114), install on the described groove (1114) and isolate T shape contact (18), described groove (1114) communicates with the rear end face of described vacuum bubbles cover (112), described vacuum bubbles cover (112) surface of internal cavity is provided with screen (1121), the inner chamber middle part of described vacuum bubbles cover (112) is provided with annular boss (1122), the bottom surface that is positioned at the vacuum bubbles cover (112) that described annular boss (1122) locates is provided with two embedded screwed holes, the bottom surface that is positioned at the vacuum bubbles cover (112) of described annular boss (1122) front is provided with the rectangle hole (1123) that is flexible coupling, placed soft copper band (16) on the described hole that is flexible coupling (1123), be fixed with T shape contact (161) below the described soft copper band (16), on the described vacuum bubbles cover (112), end is respectively equipped with one second latch (1125) about following, described second latch (1125) links into an integrated entity with described first latch (1112), the front end face left and right sides of described vacuum bubbles cover (112) is respectively equipped with a seal groove (1126), respectively be provided with an inserts screwed hole in the described seal groove (1126), the wall of described vacuum bubbles cover (112) is provided with several inserts screwed holes, the center, rear surface of described cover plate (1111) is provided with a dome (1116), and the surface is respectively equipped with a square concave surface (1117) about described vacuum bubbles cover.
3. big capacity as claimed in claim 1 or 2 is isolated the solid switch cabinet up and down, it is characterized in that: described going up below cage (9) is, the left side and the right side are uncovered cuboid cover body, the rectangular recess (91) that connects copper bar (97) is placed to having one in the described cage top of going up, the angle of described groove (91) is an arc transition, it is described that upward cage (9) is preceding, the lower left quarter angle of back is an arc transition, described groove (91) intracavity bottom evenly is provided with three round recesseds (911) downwards along the horizontal direction at groove (91) center, be provided with a slot (912) between two the described round recesseds in the left side (911), it is the conduit (913) of U-shaped that described groove (91) outer circumference is arranged with a circle longitudinal section, described conduit (913) outer rim is provided with several embedded screwed holes, last cage (9) upper surface that is positioned at described embedded screwed hole left part is provided with two inserts screwed holes, last cage (9) upper surface that is positioned at described rectangular recess (91) right part is provided with two inserts screwed holes, a described left side of going up cage (9), before right-hand member reaches, the bottom of back is provided with flange (92), it is preceding to be positioned at described last cage (9), be respectively equipped with second on the flange of bottom, back, three slide grooves (921,922), the preceding cell wall height of described second slide groove (921) is greater than back cell wall height, the preceding cell wall height of described the 3rd slide groove (922) is less than back cell wall height, the described right part flange height of cage (9) of going up is greater than the left part flange height, be positioned at a described left side of going up cage (9), be respectively equipped with circle first slide groove (93) and a seal groove (94) on the flange of right-hand member, described first slide groove (93) is plugged on first latch (1112) top of described insulating cover (11), be provided with several inserts screwed holes in the described seal groove (94), last cage (9) top of chamber that is positioned between described first slide groove (93) and the described conduit (913) is provided with a long chute (95), be provided with several reinforcements in the long chute (95) of described upward cage (9), it is described that upward cage (9) is preceding, be respectively equipped with a circle reinforcement on the back, described upward cage (9) is preceding, the bottom of back is respectively equipped with three slotted holes (96).
4. big capacity as claimed in claim 3 is isolated the solid switch cabinet up and down, it is characterized in that: above described time cage (10) is, the left side and the right side are uncovered cuboid cover body, it is described that cage (10) is preceding down, the upper left quarter angle of back is an arc transition, described cage (10) bottom surface down is to having a rectangle prism (101), the upper surface of described prism (101) wall is provided with several degree of depth grooves (1011), described prism (101) middle part is provided with cylindrical channel (1012), described prism (101) bottom surface is provided with several inserts screwed holes, described cage (10) bottom surface down is provided with four inserts screwed holes, the described left side of cage (10) down, cage (10) was preceding under right-hand member reached, the top of back is provided with flange (102), before the described flange (102), be respectively equipped with three slotted holes (1021) on the rear wall, be positioned at described cage (a 10) left side down, be respectively equipped with first slide groove (1022) and seal groove (1023) on the flange of right-hand member, described first slide groove (1022) is plugged on the bottom of first latch (1112) of described insulating cover (11), be provided with several inserts screwed holes in the described seal groove (1023), described seal groove (1023) is spirally connected fixing with the described seal groove (94) of going up cage by bolt, it is preceding to be positioned at described following cage (10), be respectively equipped with second on the flange on top, back, three slide grooves (1024,1025), the preceding cell wall height of described second slide groove (1024) is greater than back cell wall height, the preceding cell wall height of described the 3rd slide groove (1025) is less than back cell wall height, be provided with several reinforcements between described prism (101) left lateral sides and following cage (10) bottom surface, following cage (10) the inner chamber bottom surface that is positioned at described prism (101) right side is provided with several reinforcements, it is described that cage (10) is preceding down, be respectively equipped with a circle reinforcement on the back, following cage (10) the inner chamber bottom surface that is positioned at described first slide groove (1022) right side is provided with several reinforcements.
5. isolate the solid switch cabinet up and down as the described big capacity of one of claim 1 to 4, it is characterized in that: described every phase high-pressure vacuum switch unit (1) comprises insulated tension pole (12), spline shaft (13), spline connecting lever (14), connect connecting lever (15) and vacuum interrupter (17), the stationary contact of described vacuum interrupter (17) is connected with the described isolation T shape contact (18) of going up by bolt, described vacuum interrupter (17) is enclosed in the insulating cover (11) admittedly, the movable contact head end of described vacuum interrupter (17) is connected with an end of soft copper band (16) and an end of insulated tension pole (12) by bolt, the other end of described insulated tension pole (12) is with to be connected connecting lever (15) hinged, one end of the other end of described connection connecting lever (15) and spline connecting lever (14) is hinged, the vertical connection of one end of the other end of described spline connecting lever (14) and spline shaft (13), described spline shaft (13) is fixed on the splined shaft bracing frame, described spline shaft (13) is connected with operating mechanism (7), and described three-phase high-voltage vacuum switch unit (1) has a spline shaft (13).
6. big capacity as claimed in claim 5 is isolated the solid switch cabinet up and down, it is characterized in that: the described isolation transmission mechanism (22) of going up comprises three connecting levers (221), go up for three and isolate pull bar (222), last isolation power transmission shaft (223), first, two bevel gears (224,225) and last isolated operation axle (226), each described two ends that isolate pull bar (222) of going up is hinged with an end and the described middle part that isolates blade (21) of going up of a connecting lever (221) respectively, the described upper end that go up to isolate blade (21) with embed that to go up the T shape contact that described on cage (9) inner chamber be connected copper bar (30) hinged, the other end of three described connecting levers (221) all with vertical connection of last isolation power transmission shaft (223), the described isolation power transmission shaft (223) of going up is fixed on the isolation power transmission shaft supporting seat, described going up isolated upward installation first bevel gear (224) of power transmission shaft (223), described first bevel gear (224) and second bevel gear (225) engagement, install an end of isolated operation axle (226) on described second bevel gear (225), the described other end of going up isolated operation axle (226) is connected with described operating mechanism (7).
7. big capacity as claimed in claim 6 is isolated the solid switch cabinet up and down, it is characterized in that: described isolation transmission mechanism (32) down comprises three connecting levers (321), three following isolation pull bars (322), under isolate power transmission shaft (323), the 3rd, four bevel gears (324,325) reach isolated operation axle (326) down, the two ends of each described down isolation pull bar (322) are hinged with the described middle part that isolates blade (31) down of an end of a connecting lever (321) and respectively, the upper end of described isolation blade (31) down is hinged with the T shape contact (161) that the described soft copper band (16) that is embedded in insulating cover (11) bottom is fixed, the other end of three described connecting levers (321) all with is down isolated vertical connection of power transmission shaft (323), the described power transmission shaft (323) of isolating down is fixed on down on the isolation power transmission shaft supporting seat, the described power transmission shaft (323) of isolating is down gone up installation third hand tap gear (324), described third hand tap gear (324) and the 4th bevel gear (325) engagement, described the 4th bevel gear (325) goes up installs an end of isolated operation axle (326) down, and the described other end of isolated operation axle (326) down is connected with described operating mechanism (7).
8. big capacity as claimed in claim 7 is isolated the solid switch cabinet up and down, it is characterized in that: described ground connection transmission mechanism (42) down comprises three connecting levers (421), three following ground insulation pull bars (422), following ground connection power transmission shaft (423), the 5th, six bevel gears (424,425), following ground connection operating axis (426) and ground connection T shape contact (427), the two ends of each described down ground insulation pull bar (422) are hinged with the middle part of an end of a connecting lever (421) and a described ground connection blade (41) down respectively, described ground connection T shape contact (427) is embedded in the bottom of insulating cover (11), the upper end and the ground connection T shape contact (427) of described ground connection blade (41) down are hinged, the other end of three described connecting levers (421) all with vertical connection of following ground connection power transmission shaft (423), described ground connection power transmission shaft (423) down is fixed on down on the ground connection power transmission shaft supporting seat, described ground connection power transmission shaft (423) is down gone up the 5th bevel gear (424) is installed, described the 5th bevel gear (424) and the 6th bevel gear (425) engagement, described the 6th bevel gear (425) goes up installs an end of ground connection operating axis (426) down, and the described other end of ground connection operating axis (426) down is connected with described operating mechanism (7).
9. big capacity as claimed in claim 8 is isolated the solid switch cabinet up and down, it is characterized in that: each described bus casing (5) is straight tube or L shaped bend pipe, and each described turnover thread casing (6) is straight tube or L shaped bend pipe.
10. big capacity as claimed in claim 9 is isolated the solid switch cabinet up and down, it is characterized in that: the rated operational voltage of described switch cubicle is 10KV, and rated operational current is 1250A, and the specified short circuit current that cut-offs is 31.5KA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010588271A CN102110954B (en) | 2010-12-14 | 2010-12-14 | High-capacity upper and lower isolated solid switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010588271A CN102110954B (en) | 2010-12-14 | 2010-12-14 | High-capacity upper and lower isolated solid switch cabinet |
Publications (2)
| Publication Number | Publication Date |
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| CN102110954A true CN102110954A (en) | 2011-06-29 |
| CN102110954B CN102110954B (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010588271A Active CN102110954B (en) | 2010-12-14 | 2010-12-14 | High-capacity upper and lower isolated solid switch cabinet |
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| Country | Link |
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| CN (1) | CN102110954B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420399A (en) * | 2011-08-19 | 2012-04-18 | 北京清畅电力技术股份有限公司 | Isolated insulation cover and isolating switch device |
| CN102810824A (en) * | 2012-08-31 | 2012-12-05 | 北京华电瑞通电力工程技术有限公司 | Solid-insulating fully-sealed device |
| CN104300416A (en) * | 2014-09-12 | 2015-01-21 | 宁波耀华电气科技有限责任公司 | Combination switch with dual-isolation function |
| CN104485600A (en) * | 2015-01-05 | 2015-04-01 | 北京双杰电气股份有限公司 | Switch cabinet |
| CN105576547A (en) * | 2016-03-03 | 2016-05-11 | 北京龙源开关设备有限责任公司 | Reinforced insulation protective cover for environment-friendly type gas insulation ring network cabinet isolation switch |
| CN105846335A (en) * | 2016-05-10 | 2016-08-10 | 广东紫光电气有限公司 | 12kV current-carrying 1250A solid insulation switchgear |
| CN112310669A (en) * | 2020-10-21 | 2021-02-02 | 贵州电网有限责任公司 | Novel adjustable three-phase interlock earth connection of cubical switchboard |
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| CN101383241A (en) * | 2007-09-05 | 2009-03-11 | 北京双杰配电自动化设备有限公司 | Solid insulation electricity isolation device |
| CN101847838A (en) * | 2010-06-22 | 2010-09-29 | 北京双杰电气股份有限公司 | 24kV solid insulated fully-closed switch combined electrical appliance |
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| US5148348A (en) * | 1991-06-17 | 1992-09-15 | Westinghouse Electric Corp. | Polymeric enclosure for electrical apparatus |
| CN101383241A (en) * | 2007-09-05 | 2009-03-11 | 北京双杰配电自动化设备有限公司 | Solid insulation electricity isolation device |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420399A (en) * | 2011-08-19 | 2012-04-18 | 北京清畅电力技术股份有限公司 | Isolated insulation cover and isolating switch device |
| CN102420399B (en) * | 2011-08-19 | 2014-09-03 | 北京清畅电力技术股份有限公司 | Isolated insulation cover and isolating switch device |
| CN102810824A (en) * | 2012-08-31 | 2012-12-05 | 北京华电瑞通电力工程技术有限公司 | Solid-insulating fully-sealed device |
| CN102810824B (en) * | 2012-08-31 | 2015-05-27 | 北京华电瑞通电力工程技术有限公司 | Solid-insulating fully-sealed device |
| CN104300416A (en) * | 2014-09-12 | 2015-01-21 | 宁波耀华电气科技有限责任公司 | Combination switch with dual-isolation function |
| CN104300416B (en) * | 2014-09-12 | 2016-08-17 | 宁波耀华电气科技有限责任公司 | There is the cubicle switch of double isolation features |
| CN104485600A (en) * | 2015-01-05 | 2015-04-01 | 北京双杰电气股份有限公司 | Switch cabinet |
| CN105576547A (en) * | 2016-03-03 | 2016-05-11 | 北京龙源开关设备有限责任公司 | Reinforced insulation protective cover for environment-friendly type gas insulation ring network cabinet isolation switch |
| CN105846335A (en) * | 2016-05-10 | 2016-08-10 | 广东紫光电气有限公司 | 12kV current-carrying 1250A solid insulation switchgear |
| CN105846335B (en) * | 2016-05-10 | 2018-02-02 | 广东紫光电气有限公司 | A kind of 12kV current-carrying 1250A solid insulation switch cabinets |
| CN112310669A (en) * | 2020-10-21 | 2021-02-02 | 贵州电网有限责任公司 | Novel adjustable three-phase interlock earth connection of cubical switchboard |
| CN112310669B (en) * | 2020-10-21 | 2022-04-15 | 贵州电网有限责任公司 | Adjustable three-phase linkage grounding device for switch cabinet |
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| CN102110954B (en) | 2012-10-10 |
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