CN104143771B - A kind of high-tension switch cabinet - Google Patents
A kind of high-tension switch cabinet Download PDFInfo
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- CN104143771B CN104143771B CN201410380828.4A CN201410380828A CN104143771B CN 104143771 B CN104143771 B CN 104143771B CN 201410380828 A CN201410380828 A CN 201410380828A CN 104143771 B CN104143771 B CN 104143771B
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Abstract
The invention discloses a kind of high-tension switch cabinet, relate to a kind of transformer equipment. Comprise control room, isolating switch chamber and vacuum load switch chamber; Arrester discharge counter is set in control room; At indoor isolating switch, the high-voltage arrester of arranging of isolating switch; At indoor high-tension fuse, vacuum extinction switch, earthed switch and the relay bungalow of arranging of vacuum load switch, also comprise the mechanical chain of the between centers mechanical chain of between centers mechanical chain, isolating switch and the vacuum extinction switch of reliable isolating switch and earthed switch, in addition isolating switch and door, mechanical chain can not only provide safety guarantee for the normal operation of equipment reliably, has also ensured staff's personal safety.
Description
Technical field
The present invention relates to a kind of transformer equipment, refer in particular to a kind of high-tension switch cabinet.
Background technology
Along with social development and the increase of population, the requirement of the reliability to power supply and the utilization rate in soil is more and more higher, heightCompress switch cabinet as the electric equipment of one, be all applied in a lot of occasions. Switch cubicle will be towards miniaturization, highly reliable, low disappearingConsumption, the development of environmental protection aspect; Along with the employing of new technology, new material, new processing technology and assembly technology, new designing conceptApplication, the size of not only having dwindled switch cubicle, has improved their reliability, and makes its profile more attractive in appearance. AssemblingFormula structure can improve the machining accuracy of cabinet, ensures to exchange reliably, is also conducive to manufactory's tissue simultaneously and produces, and saving accounts forGround area, is easy to form batch production, shortens the production cycle. Therefore, the modular construction of high-tension switch cabinet main body will be progressivelyReplace old-fashioned Welding Structure. High-voltage switch gear is to play in power system generating, transmission of electricity, distribution, electric energy conversion with in consumingThe effects such as break-make, control or protection, switch cubicle has the functions such as built on stilts line, cable incoming-outgoing wire, bus contact. At present,In traditional electric power system, for the propelling of the primary cut-out in high-tension switch cabinet with shift out operation, still need watchMember manually carries out before high-tension switch cabinet, thereby occurs the close contact of people and high-tension electricity, therefore threatens operator on duty'sPersonal safety; In addition, due to artificial origin, also may there is manual maloperation, thereby have a strong impact on power supply reliability,The generation even causing a serious accident, therefore, traditional high-tension switch cabinet uses dangerous.
Summary of the invention
One object of the present invention is to propose a kind of high-voltage switch gear that can guarantee staff's safety, equipment safety operationCabinet.
For achieving the above object, provide following technical scheme:
A kind of high-tension switch cabinet, comprises control room, isolating switch chamber and vacuum load switch chamber; In control room, arrange lightning-arrestDevice discharge counter; At indoor isolating switch, the high-voltage arrester of arranging of isolating switch; At the indoor height that arranges of vacuum load switchPress fuse, vacuum extinction switch, earthed switch and relay bungalow, also comprise mechanical connection, described mechanical interlocking comprise everyLeave pass Control Shaft, be fixedly installed isolating switch interlock plate on isolating switch Control Shaft, isolating switch interlock plate is fan-shapedPlate is provided with the groove that circular arc is capable on the cambered surface edge of fanning strip; On vacuum extinction switch Control Shaft, be provided with vacuum extinctionSwitch interlock plate, vacuum extinction switch interlock plate is fanning strip, on the cambered surface edge of fanning strip, is provided with the groove that circular arc is capable;Isolating switch interlock plate and vacuum extinction switch interlock plate are arranged between two risers; Disk diameter and isolating switch interlock plateIdentical with the groove place diameter of a circle arranging on vacuum extinction switch interlock plate, establish respectively along axis direction in the both sides of diskPut a protruding axle, be provided with the groove matching with protruding axle of inclination two relative sides of riser, the vertical height of groove withIsolating switch interlock plate is identical with the degree of depth of the groove arranging on vacuum extinction switch interlock plate, and protruding axle is inserted in the groove of riser;Isolating switch interlock plate and vacuum extinction switch interlock plate in same vertical plane and the center of circle in same perpendicularSame vertical curve on; The circumference of isolating switch interlock plate contacts with the circumference of disk, and disk is stuck in vacuum extinction switch connectionIn the capable groove of circular arc on jam plate, and the bottom of the inclined groove that arranges on two fast risers of the protruding axle of disk; Isolating switchOn Control Shaft, be fixedly installed a limiting plate, two isolation spacing preiections of riser arranged outside, limiting plate is at two spacing preiectionsBetween and with one projection contact; On vacuum extinction switch Control Shaft, be fixedly installed control panel, have one in riser arranged outsideIndividual vacuum spacing preiection, a side of control panel contacts with vacuum spacing preiection; One end of isolating switch Control Shaft and the first connecting leverBe fixedly connected with, the other end of the first connecting lever and one end of connecting rod are hinged, and one end of the other end of connecting rod and the second connecting lever is hinged,The other end of the second connecting lever is fixedly connected with earthed switch Control Shaft; On isolating switch Control Shaft, be fixedly installed cam, at cabinetOn body, be provided with at least one lock bar bracket, on lock bar bracket, be provided with the hole of matching with locking bar, on cabinet door, be provided withJam plate is provided with the hole of matching with locking bar on jam plate, and one end of locking bar is provided with block, locking bar be inserted in lock bar bracket andIn hole on jam plate, block withstands on cam, and on the locking bar between block and lock bar bracket, string has spring. Have reliablyThe between centers mechanical chain of between centers mechanical chain, isolating switch and the vacuum extinction switch of isolating switch and earthed switch, also have everyLeave the mechanical chain of Guan Yumen, mechanical chain can not only provide safety guarantee for the normal operation of equipment reliably, also ensuresStaff's personal safety.
Preferably, describedly on the cabinet door every switch gear room, electromagnetic lock is housed, electromagnetic lock is connected with electrification display by cable,On the cabinet door every switch gear room, be provided with observation window.
Preferably, on the cabinet door of described vacuum load switch chamber, electromagnetic lock is housed, electromagnetic lock connects by cable and electrification displayConnect, on the cabinet door of vacuum load switch chamber, be provided with observation window. When staff observes high-voltage charge display device by observation windowWhether charged, when high-voltage charge display device shows that while not being with some, electromagnetic lock is opened, staff just can open the door and enter high pressureChamber and transformation chamber, prevent staff's maloperation, safe and reliable.
Preferably, on the exterior wall of described control room, observation window is set.
Preferably, in the cabinet of control room, isolating switch chamber, vacuum load switch and relay bungalow, be provided with illuminating lamp.
Preferably, on the cabinet door of high-tension switch cabinet, be provided with sealing strip. Make the cabinet door degree of protection of high-voltage board reach IP4X, protectBarrier device security moves reliably.
Further, described cabinet is made by covering aluminium zine plate. Corrosion-resistant, anti-oxidant, lightweight, slightly good.
Beneficial effect of the present invention is:
There is the between centers machine of between centers mechanical chain, isolating switch and the vacuum extinction switch of reliable isolating switch and earthed switchTool is chain, also have the mechanical chain of isolating switch and door, and mechanical chain can not only provide peace for the normal operation of equipment reliablyAll risk insurance barrier, has also ensured staff's personal safety.
Brief description of the drawings
Fig. 1 is a kind of high-tension switch cabinet structural representation of the present invention;
Fig. 2 is that the isolating switch of a kind of high-tension switch cabinet of the present invention and the mechanical chain of earthed switch and vacuum switch first are tiedStructure schematic diagram;
Fig. 3 is that the isolating switch of a kind of high-tension switch cabinet of the present invention and the mechanical chain of earthed switch and vacuum switch second are tiedStructure schematic diagram;
Fig. 4 is the isolating switch of a kind of high-tension switch cabinet of the present invention and the mechanical chain of earthed switch and vacuum switch the 3rd knotStructure schematic diagram;
Fig. 5 is the isolating switch of a kind of high-tension switch cabinet of the present invention and the mechanical chain of earthed switch and vacuum switch the 4th knotStructure schematic diagram;
Fig. 6 is the isolating switch of a kind of high-tension switch cabinet of the present invention and mechanical chain first structural representation of door;
Fig. 7 is the isolating switch of a kind of high-tension switch cabinet of the present invention and mechanical chain second structural representation of door;
Wherein: 1, control room, 2, isolating switch chamber, 3, vacuum extinction switch gear room, 4, disk, 5, riser, 6,Cam, 7, lock bar bracket, 8, locking bar, 9, jam plate, 10, block;
11, lightning-arrest discharge counter;
21, isolating switch, 22, high-voltage arrester;
211, isolating switch Control Shaft, 212, isolating switch interlock plate, 213, limiting plate, 214, isolation spacing preiection;
31, high-tension fuse, 32, vacuum extinction switch, 33, earthed switch, 34, relay bungalow;
321, vacuum extinction switch Control Shaft, 212, vacuum extinction switch interlock plate, 213, control panel, 214, vacuum goes outArc spacing preiection;
331, the first connecting lever, 332, connecting rod, 333, the second connecting lever, 334, earthed switch Control Shaft.
Detailed description of the invention
Below in conjunction with accompanying drawing, a most preferred embodiment of the present invention is described further, to help understanding content of the present invention.
As shown in Figures 1 to 7, the present invention includes control room 1, isolating switch chamber 2 and vacuum load switch chamber 3; At instrumentThe interior arrester discharge counter 11 that arranges in table chamber 1; Interior isolating switch 21, the high-voltage arrester 22 of arranging in isolating switch chamber 2;, high-voltage arrester 22 is gone between and is connected with the arrester discharge counter 11 in control room 1 by register. At vacuum-loadInterior high-tension fuse 31, vacuum extinction switch 32, earthed switch 33 and the relay bungalow 34 of arranging in switch gear room 3. From everyOn the cabinet door of switch gear room 2 and vacuum load switch chamber 3, electromagnetic lock is housed, electromagnetic lock is connected with electrification display by cable,On the cabinet door every switch gear room and vacuum load switch chamber, be provided with observation window. On the exterior wall of control room 1, observation window is set. ?In the cabinet of control room 1, isolating switch chamber 2, vacuum load switch chamber 3 and relay bungalow 34, be provided with illuminating lamp. High pressureOn the cabinet door of switch cubicle, be provided with sealing strip. Cabinet is made by covering aluminium zine plate.
In cabinet, be provided with reliable mechanical chain mechanism. On isolating switch Control Shaft 211, be fixedly installed isolating switchInterlock plate 212, isolating switch interlock plate 212 is fanning strip, on the cambered surface edge of fanning strip, is provided with the groove that circular arc is capable;On vacuum extinction switch Control Shaft 321, be provided with vacuum extinction switch interlock plate 322, vacuum extinction switch interlock plate 322 isFanning strip is provided with the groove that circular arc is capable on the cambered surface edge of fanning strip; Isolating switch interlock plate 212 and vacuum extinction are openedClosing interlock plate 322 is arranged between two risers 5; Disk 4 diameters and isolating switch interlock plate 212 and vacuum extinction switchThe groove place diameter of a circle arranging on interlock plate 322 is identical, in the both sides of disk 4 along axis direction arrange respectively one protrudingAxle, is provided with the groove matching with protruding axle of inclination two relative sides of riser 5, the vertical height of groove with keep apartClose interlock plate 212 identical with the degree of depth of the groove arranging on vacuum extinction switch interlock plate 322, protruding axle is inserted in the recessed of riser 5In groove; Isolating switch interlock plate 212 and vacuum extinction switch interlock plate 322 in same vertical plane and the center of circle existOn same vertical curve in same perpendicular; The circumference of isolating switch interlock plate 212 contacts with the circumference of disk 4, circleIn the dish 4 capable grooves of circular arc that are stuck on vacuum extinction switch interlock plate 322, and the protruding axle of disk 4 is in two fast risers 5The bottom of the inclined groove of upper setting; On isolating switch Control Shaft 211, be fixedly installed a limiting plate 213, riser 5 outsidesTwo isolation spacing preiections 214 are set, and limiting plate 213 contacts between two isolation spacing preiections 214 and with a projection214; On vacuum extinction switch Control Shaft 321, be fixedly installed control panel 323, have a vacuum in riser 5 arranged outsideSpacing preiection 324, a side of control panel 323 contacts with vacuum spacing preiection 324;
Isolating switch Control Shaft 211 is fixedly connected with one end of the first connecting lever 331, the other end of the first connecting lever 331 and connecting rod 332One end hinged, one end of the other end of connecting rod 332 and the second connecting lever 333 is hinged, the other end and the ground connection of the second connecting lever 333 are openedClosing Control Shaft 334 is fixedly connected with;
On isolating switch Control Shaft 211, be fixedly installed cam 6, on cabinet, be provided with two lock bar brackets 7, at lock bar bracketOn 7, be provided with the hole of matching with locking bar 8, on cabinet door, be provided with jam plate 9, on jam plate 9, be provided with and match with locking bar 8Hole, one end of locking bar 8 is provided with block 10, and locking bar 8 is inserted in the hole on lock bar bracket 7 and jam plate 9, and block 10 withstands on cam 6Upper, on the locking bar 8 between block 10 and lock bar bracket 7, string has spring.
Specific works mode
As described in Figure 2, now keep apart 21 passes in separating brake, vacuum extinction switch 32 is in gate-dividing state, earthed switch 33In "on" position. Vacuum extinction switch interlock plate 322 clockwise rotation is not blocked by vacuum spacing preiection 324, therefore notCan rotate along pointer; Want to be rotated counterclockwise the groove that disk 4 must be tilted along riser 5 and upwards push away, and disk 4 upwardsMovement tendency again isolated pass interlock plate 212 blocks, and therefore can not rotate counterclockwise; So can only keep static. Keep apartThe limited plate 213 of trend that pass interlock plate 212 is rotated counterclockwise and the isolation spacing preiection 214 in left side stop. In sum, figureWhen 2 state, only have isolating switch interlock plate 212 to turn clockwise. When 212 dextrorotations of isolating switch interlock plateWhile forwarding Fig. 3 state to, isolating switch 21 is in "on" position; Isolating switch Control Shaft 211 rotarily drive the first connecting lever 331Rotation, further make connecting rod 332 move up, and drive the second connecting lever 333 books turn clockwise, finally make ground connectionSwitch Control Shaft 334 rotates, by earthed switch 33 separating brakes.
As described in Figure 3, now isolating switch 21 is in closing a floodgate, and vacuum extinction switch 32 is in gate-dividing state, earthed switch 33In gate-dividing state. Now, vacuum extinction switch interlock plate 322 can be rotated counterclockwise, and vacuum extinction switch 32 is closed a floodgate.In the time that vacuum arc-suppressing switch interlock plate 322 rotates to Fig. 4 state, control panel 323 left surfaces are just in time pressed in vacuum extinction switch 32Upper, vacuum extinction switch 32 is closed a floodgate.
As described in Figure 4, now isolating switch 21 is in closing a floodgate, and vacuum extinction switch 32 is in "on" position, earthed switch 33In gate-dividing state. Isolating switch interlock plate 212 clockwise rotation is blocked by the isolation spacing preiection 214 on right side, thereforeCan not rotate along pointer; Want to be rotated counterclockwise the groove that disk 4 must be tilted along riser 5 and push away downwards, and disk 4The trend that moves downward is blocked by vacuum extinction switch interlock plate 322 again, therefore can not rotate counterclockwise; So can only keep static.The trend that vacuum extinction switch interlock plate 322 is rotated counterclockwise is stopped by vacuum extinction switch 32. In sum, the state of Fig. 4Time, only have vacuum extinction switch interlock plate 322 to turn clockwise. When vacuum arc-suppressing switch interlock plate 322 clockwiseWhile rotating to Fig. 5 state, vacuum extinction switch 32 is in gate-dividing state.
As described in Figure 5, now isolating switch 21 is in closing a floodgate, and vacuum extinction switch 32 is in gate-dividing state, earthed switch 33In gate-dividing state. Now, isolating switch interlock plate 212 can be rotated counterclockwise, and isolating switch 21 is closed a floodgate. When keeping apartWhen pass interlock plate 212 rotates to Fig. 2 state, isolation spacing preiection 214 blocks limiting plate 213, and isolating switch 21 is closed a floodgate;The rotation that rotarily drives the first connecting lever 331 of isolating switch Control Shaft 211, further makes connecting rod 332 move up, and bandMoving the second connecting lever 333 is rotated counterclockwise, and finally makes earthed switch Control Shaft 334 rotate, and earthed switch 33 is closed a floodgate.
As described in Figure 6, isolating switch 21 is in the time of gate-dividing state, and door lock is in open mode, and locking bar 8 is not inserted into jam plate 9Hole in. Isolating switch Control Shaft 211 turns clockwise and is with moving cam 6 to rotate in the time that separating brake moves to combined floodgate, and cam 6 heads on lockBlock 10 on bar 8, pushes away locking bar 8 to jam plate 8 directions, further make locking bar 8 be inserted in the hole on jam plate 9, make on door lock,As described in Figure 7.
Claims (7)
1. a high-tension switch cabinet, comprises control room (1), isolating switch chamber (2) and vacuum load switch chamber (3), arrester discharge counter (11) is set in control room (1), isolating switch (21), high-voltage arrester (22) are set in isolating switch chamber (2), high-tension fuse (31), vacuum extinction switch (32), earthed switch (33) and relay bungalow (34) are set in vacuum load switch chamber (3), it is characterized in that, also comprise mechanical connection, mechanical interlocking comprises isolating switch Control Shaft (211), on isolating switch Control Shaft (211), be fixedly installed isolating switch interlock plate (212), isolating switch interlock plate (212) is fanning strip, is provided with the groove of circular arc on the cambered surface edge of fanning strip, on vacuum extinction switch Control Shaft (321), be provided with vacuum extinction switch interlock plate (322), vacuum extinction switch interlock plate (322) is fanning strip, is provided with the groove of circular arc on the cambered surface edge of fanning strip, isolating switch interlock plate (212) and vacuum extinction switch interlock plate (322) are arranged between two risers (5), disk (4) diameter is identical with the upper groove place diameter of a circle arranging of vacuum extinction switch interlock plate (322) with isolating switch interlock plate (212), both sides at disk arrange respectively a protruding axle along axis direction, be provided with the groove matching with protruding axle of inclination in the relative side of two risers (5), the vertical height of groove is identical with the degree of depth of isolating switch interlock plate (212) and the upper groove arranging of vacuum extinction switch interlock plate (322), and protruding axle is inserted in the groove on riser (5), isolating switch interlock plate (212) and vacuum extinction switch interlock plate (322) are in same vertical plane and on the same vertical curve of the center of circle in same perpendicular, the circumference of isolating switch interlock plate (322) contacts with the circumference of disk (4), disk (4) is stuck in the circular groove on vacuum extinction switch interlock plate (322), and the bottom of the protruding axle of disk (4) in the upper inclined groove arranging of two risers (5), on isolating switch Control Shaft (211), be fixedly installed a limiting plate (213), two isolation spacing preiections of riser (5) arranged outside (214), limiting plate (213) contacts between two spacing preiections and with an isolation spacing preiection (214), on vacuum extinction switch Control Shaft (321), be fixedly installed control panel (323), have a vacuum spacing preiection (324) in riser (5) arranged outside, a side of control panel (323) contacts with vacuum spacing preiection (324), isolating switch Control Shaft (211) is fixedly connected with one end of the first connecting lever (331), one end of the other end of the first connecting lever (331) and connecting rod (332) is hinged, one end of the other end of connecting rod (332) and the second connecting lever (333) is hinged, and the other end of the second connecting lever (333) is fixedly connected with earthed switch Control Shaft (334), on isolating switch Control Shaft (211), be fixedly installed cam (6), on cabinet, be provided with at least one lock bar bracket (7), on lock bar bracket (7), be provided with the hole of matching with locking bar (8), on cabinet door, be provided with jam plate (9), on jam plate (9), be provided with the hole of matching with locking bar (8), one end of locking bar (8) is provided with block (10), locking bar (8) is inserted in the hole on lock bar bracket (7) and jam plate (9), block (10) withstands on cam (6), the upper string of locking bar (8) between block (10) and lock bar bracket (7) has spring.
2. a kind of high-tension switch cabinet as claimed in claim 1, it is characterized in that, on the cabinet door of described isolating switch chamber (2), electromagnetic lock is housed, electromagnetic lock is connected with electrification display by cable, on the cabinet door of isolating switch chamber (2), is provided with observation window.
3. a kind of high-tension switch cabinet as claimed in claim 1, it is characterized in that, on the cabinet door of described vacuum load switch chamber (3), electromagnetic lock is housed, electromagnetic lock is connected with electrification display by cable, on the cabinet door of vacuum load switch chamber, is provided with observation window.
4. a kind of high-tension switch cabinet as claimed in claim 1, is characterized in that, on the exterior wall of described control room (1), observation window is set.
5. a kind of high-tension switch cabinet as claimed in claim 1, it is characterized in that, in the cabinet of control room (1), isolating switch chamber (2), vacuum load switch chamber (3) and relay bungalow (34), be provided with illuminating lamp.
6. a kind of high-tension switch cabinet as claimed in claim 1, is characterized in that, on the cabinet door of high-tension switch cabinet, is provided with sealing strip.
7. a kind of high-tension switch cabinet as claimed in claim 1, is characterized in that, described cabinet is made by covering aluminium zine plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410380828.4A CN104143771B (en) | 2014-08-04 | 2014-08-04 | A kind of high-tension switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410380828.4A CN104143771B (en) | 2014-08-04 | 2014-08-04 | A kind of high-tension switch cabinet |
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| Publication Number | Publication Date |
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| CN104143771A CN104143771A (en) | 2014-11-12 |
| CN104143771B true CN104143771B (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410380828.4A Active CN104143771B (en) | 2014-08-04 | 2014-08-04 | A kind of high-tension switch cabinet |
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| CN (1) | CN104143771B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244206B (en) * | 2015-11-12 | 2018-02-06 | 有能集团江苏电气有限公司 | A kind of interlocking mechanism of switch cabinet |
| CN105889774B (en) * | 2016-06-02 | 2022-07-22 | 湖南长高森源电力设备有限公司 | Lighting device for improving internal fault capability and protection grade of anti-shock switch equipment |
| CN109473317B (en) * | 2018-11-19 | 2024-07-12 | 浙江宏舟新能源科技有限公司 | High-voltage direct-current relay with magnetic steel arc extinction function |
| CN109545612B (en) * | 2018-12-29 | 2023-09-05 | 宁波天安智能电网科技股份有限公司 | Integrated load switch, combined electrical apparatus and cubical switchboard |
| CN110311303A (en) * | 2019-07-01 | 2019-10-08 | 江苏美好电气有限公司 | High-voltage board in a kind of safety protective room |
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| DE2453194A1 (en) * | 1974-11-09 | 1976-05-13 | Bbc Brown Boveri & Cie | Disconnecting switch safety earthing switch - has spring force drive actuated by common drive shaft in sequential manner |
| CN101556878A (en) * | 2009-05-25 | 2009-10-14 | 华仪电气股份有限公司 | Operation mechanism of high-voltage vacuum load switch-fuse combined electric apparatus |
| CN201523158U (en) * | 2009-09-30 | 2010-07-07 | 珠海康晋电气有限公司 | Interlocked operation mechanism of power distribution switchgear |
| CN102024613A (en) * | 2009-09-14 | 2011-04-20 | 江阴市云峰电器设备有限公司 | Cam interlocking mechanism of vacuum switch |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US9136077B2 (en) * | 2011-04-14 | 2015-09-15 | Impact Power, Inc. | Three-phase, multi-way vacuum interrupter switchgear with internal ground switches |
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2014
- 2014-08-04 CN CN201410380828.4A patent/CN104143771B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2453194A1 (en) * | 1974-11-09 | 1976-05-13 | Bbc Brown Boveri & Cie | Disconnecting switch safety earthing switch - has spring force drive actuated by common drive shaft in sequential manner |
| CN101556878A (en) * | 2009-05-25 | 2009-10-14 | 华仪电气股份有限公司 | Operation mechanism of high-voltage vacuum load switch-fuse combined electric apparatus |
| CN102024613A (en) * | 2009-09-14 | 2011-04-20 | 江阴市云峰电器设备有限公司 | Cam interlocking mechanism of vacuum switch |
| CN201523158U (en) * | 2009-09-30 | 2010-07-07 | 珠海康晋电气有限公司 | Interlocked operation mechanism of power distribution switchgear |
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| CN104143771A (en) | 2014-11-12 |
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