CN103311812B - Combined electrical apparatus with isolation switch, vacuum breaker and earthing switch - Google Patents
Combined electrical apparatus with isolation switch, vacuum breaker and earthing switch Download PDFInfo
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- CN103311812B CN103311812B CN201310265483.3A CN201310265483A CN103311812B CN 103311812 B CN103311812 B CN 103311812B CN 201310265483 A CN201310265483 A CN 201310265483A CN 103311812 B CN103311812 B CN 103311812B
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Abstract
The invention discloses a combined electrical apparatus with an isolation switch, a vacuum breaker and an earthing switch. The combined electrical apparatus comprises a machine frame, wherein three bus wire inlet columns are fixed on the upper portion of the machine frame, an insulation rotating shaft is pivoted on the upper middle portion of the machine frame, and three isolation knife switches are arranged on the insulation rotating shaft. Three fixedly sealed poles are arranged in the middle of the machine frame, and each fixedly sealed pole comprises an insulation casing, a vacuum arc-extinguishing chamber, a wire inlet column and a wire outlet column. Each vacuum arc-extinguishing chamber is provided with an operation pull rod, an earthing contact is arranged on the lateral surface of each wire outlet column, the middle of an insulation connection rod is hinged to the lower portion of each insulation casing, one end of the insulation connection rod is hinged to the lower end of each pull rod, and the other end of the insulation connection rod is hinged to an over-travel rod. The lower end of each isolation knife switch is hinged to the upper end of the wire inlet column of each fixedly sealed pole. A breaker operation shaft is pivoted onto the machine frame located on the side of the three fixedly sealed poles. An earthing rotating shaft is pivoted on the middle lower portion of the machine frame, and an operation mechanism is arranged on one side of the machine frame. The combined electrical apparatus is compact in structure, small in volume, simple in the transmission mechanism and high in operation reliability.
Description
Technical field
The present invention relates to the switching device of indoor switch cabinet, especially a kind of combined electrical apparatus with isolating switch, vacuum circuit-breaker, earthed switch.
Background technology
Current domestic-developed 12kV switch cubicle, vacuum circuit-breaker, isolating switch, earthed switch adopt independent installation, there is the shortcomings such as switch cubicle volume is large, interlocking is complicated, copper bar consumption is many, connection contact is many, complicated operation, maintenance trouble, domestic also have a little producer to be proposed band isolated vacuum breaker, but majority carries out reequiping on the basis of the breaker mechanism of the horizontal dress of tradition, it is obvious that it pieces together phenomenon, there is volume large, the problem of transmission complexity, bring defect to be that reliability is low, maintenance trouble simultaneously.
Although on December 30th, 2009 discloses, a patent No. is ZL200920035512.6, name is called the patent of invention of " isolating switch and vacuum circuit-breaker combined electrical apparatus ", it comprises isolating switch portion, vacuum circuit-breaker portion, grounding parts, operation locking part and frame, but isolating switch portion is arranged on the side in vacuum circuit-breaker portion, grounding parts is arranged on the opposite side in vacuum circuit-breaker portion; There is the more roomy problem of volume in this structure, is unfavorable for the miniaturization of switch cubicle equally.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of combined electrical apparatus with isolating switch, vacuum circuit-breaker, earthed switch, compact conformation, and volume is little, be conducive to the miniaturization of switch cubicle, transmission mechanism is simple simultaneously, interlocks perfect, and operating reliability is high and maintenance is convenient.
For achieving the above object, technical scheme of the present invention is: a kind of with isolating switch, vacuum circuit-breaker, the combined electrical apparatus of earthed switch, comprise frame, three bus inlet wire posts are fixed at the interval, top of frame, the lower end of each bus inlet wire post is inlet wire fixed contact, the middle and upper part pivot joint one of frame is insulated rotating shaft, in insulation rotating shaft, three isolation switchs are equipped with at interval, the position of three isolation switchs is corresponding with three bus inlet wire posts, three poles are equipped with at the middle part of frame, each pole comprises insulation shell, vacuum interrupter, inlet wire post, outlet column, vacuum interrupter is clipped in the centre of insulation shell, vacuum interrupter is equipped with the pull bar that an operation combines or disconnects, described pull bar is connected with the moved end, bottom of vacuum interrupter, inlet wire post stretches into insulation shell from the top of insulation shell and is connected with vacuum interrupter upper end, the bottom that outlet column is supported on insulation shell is flexible coupling by copper and is connected with the moved end, bottom of vacuum interrupter, the side of outlet column is provided with earthing contact, the middle part of one insulated connecting rod is hinged on the bottom of insulation shell, insulated connecting rod is hinged near one end of insulation shell and the lower end of pull bar, insulated connecting rod is hinged with an excess of stroke bar away from the other end of insulation shell, the upper end of the lower end of each isolation switch and the inlet wire post of each pole is hinged, pivot joint one breaker operator axle in the frame of three pole sides, on breaker operator axle, interval arranges three projections, the top of the described excess of stroke bar on the free end of each projection and each pole is articulated, and between the upper end of the described excess of stroke bar on each pole and frame, an extension spring is respectively housed, middle and lower part pivot joint ground connection rotating shaft of frame, in ground connection rotating shaft, interval is fixed three grounding switchs and is engaged with the earthing contact in three pole outlet column or be separated, an operating mechanism is equipped with in the side of frame, and operating mechanism is provided with an output revolving shaft and is connected with breaker operator axle drive breaker operator axle to rotate and locate, the opposite side of frame arranges the first connecting lever and the second connecting lever, and one end of the first connecting lever and ground connection rotating shaft fixes, the second connecting lever fixes with one end of insulation rotating shaft, and the free end of the first connecting lever is connected by first connecting rod with the free end of the second connecting lever.
Further improvement, excess of stroke stage clip is equipped with in the centre of the described excess of stroke bar on each pole.The reliability of effective guarantee vacuum interrupter bonding state.
Further improvement, three grounding switchs wherein two first retainer spring is respectively housed between grounding switch and frame.Facilitate the location of three grounding switchs.
Further improvement, the middle and upper part of the insulation shell of each pole is provided with a circle and is roughly square flange, and the described flange on three poles also forms insulating barrier together.The isolation of Convenient switch cabinet bus-bar room and switch gear room.
Further improvement, one end of the free end of the second connecting lever and the positioning linkage rod of a L shape is hinged, and the middle part of the positioning linkage rod of L shape is hinged on the side of frame, between the other end of the positioning linkage rod of L shape and frame, the second retainer spring is also housed.The location of convenient insulation rotating shaft.
Further improvement, opposite side away from the frame of operating mechanism arranges the 3rd connecting lever and the 4th connecting lever, one end of 3rd connecting lever and breaker operator axle fixes, 4th connecting lever is articulated on the side of the frame between breaker operator axle and ground connection rotating shaft, the free end of the 3rd connecting lever is connected by second connecting rod with the free end of the 4th connecting lever, the outer peripheral face of the 4th connecting lever is provided with two detents, the outer peripheral face of the first connecting lever is also provided with two detents, a hinged activity orientation block in frame between first connecting lever and the 4th connecting lever, activity orientation block matches with the detent of the 4th connecting lever and the first connecting lever respectively.Be grounded the interlock function of rotating shaft and breaker operator axle, improve the reliability of operation further, prevent misoperation.
Further improvement, the output revolving shaft on described operating mechanism is connected by spline housing with breaker operator axle.The installing/dismounting of handled easily mechanism, makes operating mechanism realize modularization.
Further improvement, the top of frame first arranges an insulation crossbeam, and three bus inlet wire intercolumniations are every being fixed on insulation crossbeam.Facilitate the fixing of three bus inlet wire posts.
Preferably described operating mechanism comprises a housing, the output revolving shaft of operating mechanism is contained on housing, the housing of operating mechanism is fixed by bolt and frame, and the housing of operating mechanism is provided with ground connection handle hole, and one end of ground connection rotating shaft is through on the ground connection handle hole of the housing of operating mechanism, further, an operation rotating shaft housing of described operating mechanism is also equipped with, one energy storage rotating shaft, operation rotating shaft, energy storage rotating shaft, output revolving shaft is parallel to each other, operation rotating shaft is connected by a pair gear with energy storage rotating shaft, energy storage extension spring is housed between the rear portion of energy storage rotating shaft and the housing of operating mechanism, energy storage rotating shaft is also equipped with cam, keep sincere son, output revolving shaft is equipped with output toggle arm, keep roller, output roller output toggle arm is equipped with, the output roller being clashed into output toggle arm on output revolving shaft by energy storage rotating shaft overhead cam realizes output revolving shaft rotation, when output revolving shaft forwards certain position to, the sincere son of maintenance in the energy storage rotating shaft maintenance roller withstood on output revolving shaft realizes the location of output revolving shaft.This operating mechanism convenient and reliable operation, is conducive to realizing miniaturization.
The present invention, relative to the combined electrical apparatus of existing band vacuum circuit-breaker and isolation earthing switch, has the following advantages:
1, pole is hinged on the bottom of insulation shell by the middle part of an insulated connecting rod, insulated connecting rod is hinged near one end of insulation shell and the lower end of pull bar, make the operating mechanism of vacuum interrupter can be in the side of vacuum interrupter, whole pole height can be made to shorten dramatically than the traditional operation mechanism be in below vacuum interrupter; The layout of whole pole is facilitated to install, the upper end of the lower end of each isolation switch and the inlet wire post of each pole is hinged simultaneously, and realize isolating switch and be connected with the zero distance of circuit breaker, therefore overall structure closely, volume is little, is conducive to the miniaturization of switch cubicle;
2, transmission is simple, and the output revolving shaft of operating mechanism, by the operating axis of spline housing connecting breaker, just completes and fills being in transmission connection of circuit breaker with side;
3, realize the function of circuit breaker, isolating switch, the operation of earthed switch follow procedure, breaker operator axle and ground connection rotating shaft can realize interlocking, and interlock is comparatively perfect, improve the reliability of integrated operation;
4, operating mechanism realizes modularization, Whole-dismountable and installation, and maintenance is convenient;
5, pole is made by APG technique, utilizes epoxy resin vacuum interrupter and upper lower wire end all to be encapsulated.Do like this, not only reduce arc control device size, and be not thoroughly subject to external environment as the impact of dust, moisture etc., improve weatherability, now epoxy resin is not only as the main insulation of a second part, and be its mechanical support, its Electric Field Distribution and stress distribution are better than the insulating barrier structure of various shape.Because arc control device do not need the securing member that adds, current-carrying part is fixed on its position securely by the casting resin of surrounding, this greatly reduces the number of components of arc control device, and safeguards easier, and the life-span is longer.
Accompanying drawing explanation
Fig. 1 is front view of the present invention;
Fig. 2 is right view of the present invention;
Fig. 3 is left view of the present invention;
Fig. 4 is rearview of the present invention;
Fig. 5 is stereogram of the present invention;
Fig. 6 is the axial cutaway view Amplified image of pole of the present invention;
Fig. 7 is operating mechanism backsight enlarged drawing of the present invention;
Fig. 8 is operating mechanism end view of the present invention;
Fig. 9 is the installation diagram of energy storage rotating shaft of the present invention.
Embodiment
Below in conjunction with accompanying drawing and concrete execution mode, the present invention is described in further detail.
Shown in Fig. 1 to Fig. 9, a kind of with isolating switch, vacuum circuit-breaker, the combined electrical apparatus of earthed switch, comprise frame 1, three bus inlet wire posts 2 are fixed at the interval, top of frame 1, be specially and an insulation crossbeam 11 is first set on the top of frame 1, three bus inlet wire post 2 intervals are fixed on insulation crossbeam 11, the lower end of each bus inlet wire post 2 is inlet wire fixed contact, the middle and upper part pivot joint one of frame 1 is insulated rotating shaft 3, in insulation rotating shaft 3, three isolation switchs 31 are equipped with at interval, the position of three isolation switchs 31 is corresponding with three bus inlet wire posts 2, three poles 4 are equipped with at the middle part of frame 1 side by side, each pole 4 comprises insulation shell 41, vacuum interrupter 42, inlet wire post 43, outlet column 44, vacuum interrupter 42 is clipped in the centre of insulation shell 41, vacuum interrupter 42 is equipped with the pull bar 45 that an operation combines or disconnects, described pull bar 45 is connected with the moved end, bottom of vacuum interrupter 42, inlet wire post 43 stretches into insulation shell 41 and is connected with vacuum interrupter 42 upper end from the top of insulation shell 41, the bottom that outlet column 44 is supported on insulation shell 41 is flexible coupling by copper and 49 is connected with the lower end of vacuum interrupter 42, the side of outlet column 44 is provided with earthing contact 441, the middle part of one insulated connecting rod 46 is hinged on the bottom of insulation shell 41, insulated connecting rod 46 is hinged near the lower end of one end of insulation shell 41 and pull bar 45, insulated connecting rod 46 is hinged with an excess of stroke bar 47 away from the other end of insulation shell 41.
Excess of stroke stage clip 48 is equipped with in the centre of described excess of stroke bar 47.
The upper end of the lower end of each isolation switch 31 and the inlet wire post 43 of each pole 4 is hinged.
Pivot joint one breaker operator axle 5 in the frame 1 of three pole 4 sides, on breaker operator axle 5, interval arranges three projections 51, the top of the described excess of stroke bar 47 on each free end of protruding 51 and each pole 4 is articulated, and between the upper end of the described excess of stroke bar 47 on each pole 4 and frame 1, an extension spring 6 is respectively housed.
Middle and lower part pivot joint ground connection rotating shaft 7 of frame 1, in ground connection rotating shaft 7, interval is fixed three grounding switchs 71 and is combined with the earthing contact 441 in three pole 4 outlet column 44 or be separated.
An operating mechanism 8 is equipped with in the side of frame 1, and operating mechanism 8 is provided with an output revolving shaft 81 and is connected with breaker operator axle 5 to drive breaker operator axle 5 rotate and locate; Output revolving shaft 81 is connected by spline housing with breaker operator axle 5.
Preferably described operating mechanism 8 comprises a housing 82, the output revolving shaft 81 of operating mechanism 8 is contained on housing 82, the housing 82 of operating mechanism 8 is fixed by bolt and frame 1, described housing 82 is provided with ground connection handle hole 821, and one end of ground connection rotating shaft 7 is through on the ground connection handle hole 821 of described housing 82.
An operation rotating shaft 83 housing 82 of described operating mechanism 8 is also equipped with, one energy storage rotating shaft 84, operation rotating shaft 83, energy storage rotating shaft 84, output revolving shaft 81 is parallel to each other, operation rotating shaft 83 is connected by a pair gear with energy storage rotating shaft 84, between the rear portion of energy storage rotating shaft 84 and described housing 82, energy storage extension spring 85 is housed, cam 841 is also equipped with in energy storage rotating shaft 84, keep sincere sub 842, output toggle arm 811 output revolving shaft 81 is equipped with, keep roller 812, output toggle arm 811 is equipped with and exports roller 813, the output roller 813 clashing into output toggle arm 811 on output revolving shaft 81 by energy storage rotating shaft 84 overhead cam 841 realizes output revolving shaft 81 and rotates, when output revolving shaft 81 forwards certain position to, maintenance in the energy storage rotating shaft 84 sincere sub 842 maintenance roller 812 withstood on output revolving shaft 81 realizes the location of output revolving shaft 81, output revolving shaft 81 is made to remain closing position.
The opposite side of frame 1 arranges the first connecting lever 91, second connecting lever 92, one end of the 3rd connecting lever 93 and the 4th connecting lever 94, first connecting lever 91 and ground connection rotating shaft 7 fixes, one end of the second connecting lever 92 and insulation rotating shaft 3 fixes, one end of the 3rd connecting lever 93 and breaker operator axle 5 fixes, the 4th connecting lever 94 is articulated on the side of the frame 1 between breaker operator axle 5 and ground connection rotating shaft 7.
The free end of the first connecting lever 91 is connected by first connecting rod 95 with the free end of the second connecting lever 92; One end of the free end of the second connecting lever 92 and the positioning linkage rod 921 of a L shape is hinged, and the middle part of the positioning linkage rod 921 of L shape is hinged on the side of frame 1, and the second retainer spring 922 is also housed between the other end of the positioning linkage rod 921 of L shape and frame 1.
The free end of the 3rd connecting lever 93 is connected by second connecting rod 96 with the free end of the 4th connecting lever 94; The outer peripheral face of the 4th connecting lever 94 is provided with two detents 941, the outer peripheral face of the first connecting lever 91 is also provided with two detents 911, a hinged activity orientation block 90 in frame 1 between first connecting lever 91 and the 4th connecting lever 94, activity orientation block 90 matches with the detent 941 of the 4th connecting lever 94 and the detent 911 of the first connecting lever 91 respectively.
What be in both sides in three grounding switchs 71 is wherein respectively equipped with first retainer spring 72 between two grounding switchs 71 and frame 1.
The middle and upper part of the insulation shell 41 of each pole 4 is provided with a circle and is roughly the described flange 411 on square flange 411, three poles 4 and forms insulating barrier together.
Operating process of the present invention is, by rotating ground connection rotating shaft 7, then drives insulation rotating shaft 3 to rotate the combined floodgate and the separating brake that realize isolating switch by the first connecting lever 91, first connecting rod 95, second connecting lever 92, drive breaker operator axle 5 to rotate by the output revolving shaft 81 of operating mechanism 8 and coordinated the combination or the disconnection that realize vacuum interrupter 42 on pole 4 by extension spring 6, when rotating ground connection rotating shaft 7 and making three isolation switchs 31 be combined with three bus inlet wire posts 2 to close a floodgate, earthing contact 441 in three grounding switchs 71 and three pole 4 outlet column 44 is in released state, now activity orientation block 90 embeds in the detent 911 of the first connecting lever 91, 4th connecting lever 94 is free to rotate, combination or the disconnection of vacuum interrupter 42 on pole 4 now can be realized by the output revolving shaft 81 of operating mechanism 8, when on pole 4, vacuum interrupter 42 is in bonding state, activity orientation block 90 is stuck on the 4th connecting lever 94 outer peripheral face, first connecting lever 91 can not rotate, grounding misoperation when preventing vacuum interrupter 42 to be in bonding state, when on pole 4, vacuum interrupter 42 disconnects, activity orientation block 90 embeds in the detent 941 of the 4th connecting lever 94, now the first connecting lever 91 is free to rotate, just can rotate ground connection rotating shaft 7 and make isolating switch separating brake and make the earthing contact 441 of three grounding switchs 71 in three pole 4 outlet column 44 be combined simultaneously to be in ground state.
Below be only the present invention's preferred embodiment, those skilled in the art makes by claim the protection range that equivalent change all falls into this case.
Claims (10)
1. one kind with isolating switch, vacuum circuit-breaker, the combined electrical apparatus of earthed switch, comprise frame, three bus inlet wire posts are fixed at the interval, top of frame, the lower end of each bus inlet wire post is inlet wire fixed contact, the middle and upper part pivot joint one of frame is insulated rotating shaft, in insulation rotating shaft, three isolation switchs are equipped with at interval, the position of three isolation switchs is corresponding with three bus inlet wire posts, it is characterized in that: three poles are equipped with at the middle part of frame, each pole comprises insulation shell, vacuum interrupter, inlet wire post, outlet column, vacuum interrupter is clipped in the centre of insulation shell, vacuum interrupter is equipped with the pull bar that an operation combines or disconnects, described pull bar is connected with the moved end, bottom of vacuum interrupter, inlet wire post stretches into insulation shell from the top of insulation shell and is connected with vacuum interrupter upper end, the bottom that outlet column is supported on insulation shell is flexible coupling by copper and is connected with the moved end, bottom of vacuum interrupter, the side of outlet column is provided with earthing contact, the middle part of one insulated connecting rod is hinged on the bottom of insulation shell, insulated connecting rod is hinged near one end of insulation shell and the lower end of pull bar, insulated connecting rod is hinged with an excess of stroke bar away from the other end of insulation shell,
The upper end of the lower end of each isolation switch and the inlet wire post of each pole is hinged;
Pivot joint one breaker operator axle in the frame of three pole sides, on breaker operator axle, interval arranges three projections, the top of the described excess of stroke bar on the free end of each projection and each pole is articulated, and between the upper end of the described excess of stroke bar on each pole and frame, an extension spring is respectively housed;
Middle and lower part pivot joint ground connection rotating shaft of frame, in ground connection rotating shaft, interval is fixed three grounding switchs and is engaged with the earthing contact in three pole outlet column or be separated;
An operating mechanism is equipped with in the side of frame, and operating mechanism is provided with an output revolving shaft and is connected with breaker operator axle drive breaker operator axle to rotate and locate;
The opposite side of frame arranges the first connecting lever and the second connecting lever, and one end of the first connecting lever and ground connection rotating shaft fixes, the second connecting lever fixes with one end of insulation rotating shaft, and the free end of the first connecting lever is connected by first connecting rod with the free end of the second connecting lever.
2. a kind of combined electrical apparatus with isolating switch, vacuum circuit-breaker, earthed switch according to claim 1, is characterized in that: excess of stroke stage clip is equipped with in the centre of the described excess of stroke bar on each pole.
3. a kind of combined electrical apparatus with isolating switch, vacuum circuit-breaker, earthed switch according to claim 1, is characterized in that: three grounding switchs wherein two first retainer spring is respectively housed between grounding switch and frame.
4. a kind of combined electrical apparatus with isolating switch, vacuum circuit-breaker, earthed switch according to claim 1, it is characterized in that: the middle and upper part of the insulation shell of each pole is provided with a circle and is roughly square flange, the described flange on three poles also forms insulating barrier together.
5. a kind of combined electrical apparatus with isolating switch, vacuum circuit-breaker, earthed switch according to claim 1, it is characterized in that: one end of the free end of the second connecting lever and the positioning linkage rod of a L shape is hinged, the middle part of the positioning linkage rod of L shape is hinged on the side of frame, between the other end of the positioning linkage rod of L shape and frame, the second retainer spring is also housed.
6. one according to claim 1 is with isolating switch, vacuum circuit-breaker, the combined electrical apparatus of earthed switch, it is characterized in that: the opposite side away from the frame of operating mechanism arranges the 3rd connecting lever and the 4th connecting lever, one end of 3rd connecting lever and breaker operator axle fixes, 4th connecting lever is articulated on the side of the frame between breaker operator axle and ground connection rotating shaft, the free end of the 3rd connecting lever is connected by second connecting rod with the free end of the 4th connecting lever, the outer peripheral face of the 4th connecting lever is provided with two detents, the outer peripheral face of the first connecting lever is also provided with two detents, a hinged activity orientation block in frame between first connecting lever and the 4th connecting lever, activity orientation block matches with the detent of the 4th connecting lever and the first connecting lever respectively.
7. a kind of combined electrical apparatus with isolating switch, vacuum circuit-breaker, earthed switch according to claim 1, is characterized in that: the output revolving shaft on described operating mechanism is connected by spline housing with breaker operator axle.
8. a kind of combined electrical apparatus with isolating switch, vacuum circuit-breaker, earthed switch according to claim 1, is characterized in that: the top of frame first arranges an insulation crossbeam, and three bus inlet wire intercolumniations are every being fixed on insulation crossbeam.
9. a kind of combined electrical apparatus with isolating switch, vacuum circuit-breaker, earthed switch according to any one of claim 1 to 8, it is characterized in that: described operating mechanism comprises a housing, the output revolving shaft of operating mechanism is contained on housing, the housing of operating mechanism is fixed by bolt and frame, the housing of operating mechanism is provided with ground connection handle hole, and one end of ground connection rotating shaft is through on the ground connection handle hole of the housing of operating mechanism.
10. one according to claim 9 is with isolating switch, vacuum circuit-breaker, the combined electrical apparatus of earthed switch, it is characterized in that: the housing of described operating mechanism is also equipped with an operation rotating shaft, one energy storage rotating shaft, operation rotating shaft, energy storage rotating shaft, output revolving shaft is parallel to each other, operation rotating shaft is connected by a pair gear with energy storage rotating shaft, energy storage extension spring is housed between the rear portion of energy storage rotating shaft and the housing of operating mechanism, energy storage rotating shaft is also equipped with cam, keep sincere son, output revolving shaft is equipped with output toggle arm, keep roller, output roller output toggle arm is equipped with, the output roller being clashed into output toggle arm on output revolving shaft by energy storage rotating shaft overhead cam realizes output revolving shaft rotation, when output revolving shaft forwards certain position to, the sincere son of maintenance in the energy storage rotating shaft maintenance roller withstood on output revolving shaft realizes the location of output revolving shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310265483.3A CN103311812B (en) | 2013-06-28 | 2013-06-28 | Combined electrical apparatus with isolation switch, vacuum breaker and earthing switch |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310265483.3A CN103311812B (en) | 2013-06-28 | 2013-06-28 | Combined electrical apparatus with isolation switch, vacuum breaker and earthing switch |
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| CN103311812A CN103311812A (en) | 2013-09-18 |
| CN103311812B true CN103311812B (en) | 2015-07-15 |
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| CN201310265483.3A Active CN103311812B (en) | 2013-06-28 | 2013-06-28 | Combined electrical apparatus with isolation switch, vacuum breaker and earthing switch |
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| CN106992461A (en) * | 2017-06-06 | 2017-07-28 | 北京合纵科技股份有限公司 | A kind of environment-friendly type Switch main body |
| CN107180713A (en) * | 2017-07-26 | 2017-09-19 | 安徽中电兴发与鑫龙科技股份有限公司 | A kind of vacuum circuit breaker constructions |
| CN109038347A (en) * | 2018-08-21 | 2018-12-18 | 南通东源电力智能设备有限公司 | A kind of intelligent environmental protection type Inflatable ring main unit |
| CN109065405A (en) * | 2018-09-25 | 2018-12-21 | 江苏南瑞帕威尔电气有限公司 | A kind of pole |
| CN109346375A (en) * | 2018-10-23 | 2019-02-15 | 深圳市英豪电力科技有限公司 | A kind of killer switch |
| CN114256010B (en) * | 2021-11-15 | 2024-04-09 | 双杰电气合肥有限公司 | Pole for normal pressure sealing switch and normal pressure sealing switch |
| CN115663672B (en) * | 2022-11-14 | 2023-06-23 | 黄华集团有限公司 | Upper-lower double-isolation air insulation switch cabinet |
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| EP1443618A1 (en) * | 2003-01-24 | 2004-08-04 | Carlo Apostolo | Combined multifunctional middle voltage switchgear for middle voltage electric control panels |
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| CN103311812A (en) | 2013-09-18 |
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Address after: Room 103, No. 131 Nanshan Garden Middle Road, Bihu Town, Liandu District, Lishui City, Zhejiang Province Patentee after: Zhejiang Tianrun Electric Co., Ltd. Address before: Room 103, No. 131 Nanshan Garden Middle Road, Bihu Town, Liandu District, Lishui City, Zhejiang Province Patentee before: Zhejiang Tianrun Electric Power Technology Co., Ltd. |