CN101556878B - Operation mechanism of high-voltage vacuum load switch-fuse combined electric apparatus - Google Patents
Operation mechanism of high-voltage vacuum load switch-fuse combined electric apparatus Download PDFInfo
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- CN101556878B CN101556878B CN2009101434187A CN200910143418A CN101556878B CN 101556878 B CN101556878 B CN 101556878B CN 2009101434187 A CN2009101434187 A CN 2009101434187A CN 200910143418 A CN200910143418 A CN 200910143418A CN 101556878 B CN101556878 B CN 101556878B
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Abstract
The invention relates to an operation mechanism of high-voltage vacuum load switch-fuse combined electric apparatus, which comprises a vacuum connection shaft and a breaking device. The breaking device comprises a driving piece, a first driving head, a second driving head and a third driving head. The breaking device connects a handle-operated shaft with a ratchet shaft when an earthing switch is disconnected or an isolating switch shaft is in the test location so that the vacuum switch shaft can connect during the operation of the vacuum connection shaft, and the breaking device separates thehandle-operated shaft from the ratchet shaft when the connection of the vacuum switch shaft is completed and the isolating switch shaft is in the isolation or earthing location. The operation mechani sm ensures that the operation of connection and disconnection is conducted in the preset operation order. If the operation is not conducted in the preset order, the vacuum connection can not be fulfilled; therefore, an interlocking apparatus between the vacuum switch shaft and the isolating switch shaft can not be imperatively damaged.
Description
Technical field
The present invention relates to a kind of High voltage power supply equipment technical field, specifically relate to the operating mechanism of a kind of high-voltage vacuum load switch and fuse combined electric apparatus.
Background technology
High-voltage switch gear is meant and is used for electric power system generating, transmission of electricity, distribution, electric energy conversion and has consumed effects such as break-make, control or protection; Electric pressure is in the electric equipment products of 3.6kV-550kV; Comprise that mainly primary cut-out, high voltage isolator overlap and sectionalizer with earthed switch, high voltage load switch, high pressure automatically, several big type of high-voltage actuating mechanism, high-voltage explosion-proof power distribution equipment and high-tension switch cabinet etc.Wherein high-voltage switch gear need satisfy the regulation of safety operation, comprises GB3906, DL/T404 country and power industry standard, and it is specially: prevent that 1, on-load from drawing (closing) isolating switch; 2, prevent mistake branch (closing) circuit breaker; 3, prevent charged hanging ground-wire; 4, prevent to be with ground wire (closing) isolating switch; 5, prevent charged mistakenly entering charged chamber.Above-mentioned five contents that prevent electric misoperation are called for short " five is anti-"." five anti-" device generally is divided into machinery, electric and comprehensive three types.Except that " prevent mistake from dividing (closing) circuit breaker " can adopt the suggestive measure, other four anti-ly should adopt mandatory locking.From the operation of switch cubicle, each interlock requirement all embodies in certain operation sequence, therefore no matter be that combined floodgate program or separating brake program all will reach interlock requirement.When switch cubicle send the electricity operation, by the proper operation program, should at first separate earthed switch, the isolating switch that closes then closes a floodgate vacuum circuit-breaker or on-load switch again.If isolating switch and circuit breaker are just closed in operating personnel's violation operation before not dividing the ground connection switch, will make switch cubicle generation ground short circuit, cause the serious accident of equipment burnout.
The operating mechanism of the high voltage load switch in the existing high-voltage switch cabinet breaker generally comprises: isolation switch shaft, earthed switch axle, spring operating mechanism, vacuum switch axle, vacuum combined floodgate axle.Wherein, isolation switch shaft drives the isolating switch action through rotation; Earthed switch axle and the interlock of said isolation switch shaft; Said isolation switch shaft by separating brake in the operating process of closing a floodgate; Said earthed switch axle is by the separating brake that closes a floodgate, and the closing of said earthed switch axle, branch, feed motion that the separating brake action all is later than said isolation switch shaft; Vacuum combined floodgate axle drives spring operating mechanism action, and then drives said vacuum switch axle drive on-load switch combined floodgate or separating brake; The separating brake contact, it links to each other with said spring operating mechanism through mechanical transmission mechanism, can make said spring operating mechanism drive said spring operating mechanism to carry out sub-switching operation through pushing said separating brake contact.In addition, in order to reach " five is anti-", above-mentioned operating mechanism also comprises interlock, and it comprises: vacuum latching cam, isolating closing lock cam and locking wheel.Wherein, the vacuum latching cam, its outer is provided with the sub-gate position depression, rotates with said vacuum switch axle; Isolating closing lock cam, its outer are provided with isolation position depression and the test position is caved in, rotated with said isolation switch shaft; Locking wheel, it and is limited on this line and moves on the line between said vacuum latching cam and the said isolating closing lock cam rotation axle center.Caving in be suitable for said sub-gate position depression, said isolations position depression and the said test position of said locking wheel, takes turns when being arranged in wherein arbitrary depression separately when said locking, and said vacuum latching cam and said isolating closing lock cam can't relatively rotate; When said locking wheel was arranged in wherein wantonly two depressions simultaneously, said vacuum latching cam and said isolating closing lock cam can relatively rotate.When said locking wheel lays respectively at above-mentioned sub-gate position depression, isolate the position depression, and during the depression of test position, promptly corresponding respectively high voltage load switch is positioned at the separating brake position, and isolating switch is positioned at the isolated location, and isolating switch is positioned at the situation of test position.
" five is anti-" interlock in the above-mentioned high-voltage switch cabinet breaker needs a plurality of parts to cooperate the realization interlocking; Need the mutual alignment relation between vacuum switch axle, isolation switch shaft, isolating closing lock cam, vacuum latching cam and the locking wheel to conduct the locking operations; The structure more complicated requires very high for installation accuracy; In case the loosening or variation in the position of any component is arranged, promptly is easy to the function of loss of interlocking.When against vacuum combined floodgate axle carried out closing operation by force, interlock can be damaged by force, in case this situation generation high-tension switch cabinet has just lost the interlock of original design, misoperation at this moment will cause peril.In addition; Energy-storaging spring in the spring operating mechanism is along with the vacuum action of carrying out accumulation of energy-release-accumulation of energy that the combined floodgate rotating operation of axle will go round and begin again of closing a floodgate; The vacuum switch axle can be because of above-mentioned action separating brake after closing a floodgate; Aforesaid operations does not have the practical operation meaning again when effort drives springs, there is the drawback in the design in operating mechanism.
Summary of the invention
The objective of the invention is to overcome interlock in the operating mechanism of high voltage load switch of prior art exists can be by the technical problem of damaging by force; And overcome the design defect of energy-storaging spring, a kind of high-voltage vacuum load switch of interlock protective device and operating mechanism of fuse combined electric apparatus of being provided with proposed.
For solving the problems of the technologies described above, the present invention realizes through following technical scheme:
The operating mechanism of a kind of high-voltage vacuum load switch and fuse combined electric apparatus comprises vacuum combined floodgate axle, and it can drive the spring operating mechanism action and then drive vacuum switch axle feed motion,
Said vacuum combined floodgate axle comprises the lever operated axle and the ratchet shaft of coaxial setting, and said lever operated axle one end is suitable for connecting the handle of rotary manipulation, but the other end is connected with said ratchet shaft clutch ground; Said ratchet shaft and said spring operating mechanism interlock and receiving trends towards and the contacted active force of said lever operated axle;
Said operating mechanism also comprises break-up device, and it comprises:
Driving member;
First driving head, it is arranged between said driving member and the said ratchet shaft, also can the action of said driving member be passed to said ratchet shaft and it is moved on axis direction;
Second driving head, it is arranged between said driving member and the said vacuum switch axle, also can the feed motion of said vacuum switch axle be passed to said driving member;
The 3rd driving head, it is arranged between said driving member and the said isolation switch shaft, and can the closing of said isolation switch shaft, separating brake action be passed to said driving member;
Said break-up device is connected said lever operated axle when earthed switch separating brake or said isolation switch shaft are positioned at test position with said ratchet shaft, make said vacuum switch axle can said vacuum close a floodgate spool operate under combined floodgate; When the feed motion of said vacuum switch axle is accomplished and when said isolation switch shaft is positioned at isolated location or earthing position, said lever operated axle is separated with said ratchet shaft.
Said driving member is for vertically being arranged on the rod member between said isolation switch shaft and the said vacuum combined floodgate axle, and it receives the active force that trends towards near said isolation switch shaft;
Said first driving head comprises: be connected the clutch on the said ratchet shaft, and the clutch push pedal that is connected said rod member lower end;
Said clutch push pedal is provided with the propelling inclined-plane, and it contacts with said clutch and is acute angle with horizontal direction;
When said rod member was positioned at higher said primary importance, said clutch was positioned near said rod member position, and said lever operated axle contacts engagement with said ratchet shaft; When said rod member was positioned at the lower said second place, said clutch push pedal pushed away said clutch to the position away from said rod member, and said lever operated axle is separated with said ratchet shaft.
Said second driving head comprises: with the shifting block of said vacuum switch axle rotation, and be connected the block on the said rod member; Said shifting block is positioned at said block top and can rotates with said vacuum switch axle and push said block, and then promotes said rod member and move downward to the said second place.
Said the 3rd driving head comprises: be arranged at the cam on the said isolation switch shaft, it rotates and is provided with the projection of corresponding isolated location of difference, two places and test position with said isolation switch shaft; Said rod member is positioned at the said second place when stating projections contact with two places respectively in the upper end; Said rod member is positioned at said primary importance when contacting with other position of said isolation cam outer face in the upper end.
Said rod member is prism shape and is sleeved on the fixed mount that forms fixing hole that said fixing hole limits said rod member and rotates.
The trend that said rod member receives is provided by the rod member spring near the active force of said isolation switch shaft.
Trend towards and the contacted active force of said lever operated axle that said ratchet shaft receives are provided by the ratchet shaft spring.
Said break-up device is a hydraulic system, perhaps chain system, perhaps metal backguy system, perhaps pinion-and-rack system.
The present invention has the following advantages:
1, the operating mechanism of high-voltage vacuum load switch of the present invention and fuse combined electric apparatus; Make the combined floodgate sub-switching operation carry out according to the predetermined operations order; If operating sequence mistake then can't carry out the vacuum closing operation can guarantee that the interlock between vacuum switch axle and the isolation switch shaft is not damaged by force.
2, the operating mechanism of high-voltage vacuum load switch of the present invention and fuse combined electric apparatus; Overcome the drawback in the design that operating mechanism exists; After vacuum is closed a floodgate completion, arrangement of clutch is separated, there is not the operation of practical significance when having avoided effort to drive springs again.
Description of drawings
For content of the present invention is more clearly understood, below according to a particular embodiment of the invention and combine accompanying drawing, the present invention is done further detailed explanation, wherein
Fig. 1 is that the operating mechanism of high-voltage vacuum load switch of the present invention and fuse combined electric apparatus is faced structural representation;
Fig. 2 is the side-looking structural representation of the described operating mechanism of Fig. 1;
Fig. 3 is the interlock sketch map in the high-tension switch cabinet of prior art;
Reference numeral is expressed as among the figure:
1-vacuum combined floodgate axle, the lever operated axle of 11-, the 12-ratchet shaft, 2-vacuum switch axle, the 3-isolation switch shaft, the 4-spring operating mechanism, the 50-driving member, 51-first driving head, 52-second driving head,
53-the 3rd driving head, 6-locking wheel.
Embodiment
Fig. 1 to Fig. 3 has shown a kind of concrete execution mode of the present invention; The operating mechanism of a kind of high-voltage vacuum load switch and fuse combined electric apparatus; Comprise the vacuum combined floodgate axle 1 that can drive spring operating mechanism 4 actions and then drive vacuum switch axle 2 feed motions, as shown in Figure 2, this vacuum combined floodgate axle 1 comprises the lever operated axle 11 and the ratchet shaft 12 of coaxial setting; Said lever operated axle 11 1 ends are suitable for connecting the handle of rotary manipulation, but the other end is connected with said ratchet shaft 12 clutches ground; Said ratchet shaft 12 is with said spring operating mechanism 4 interlocks and receive and trending towards and said lever operated axle 11 contacted active forces.Said operating mechanism also comprises break-up device, and it comprises: driving member 50, first driving head 51, second driving head 52, the 3rd driving head 53.Said driving member 50 is for vertically being arranged on the rod member between said isolation switch shaft 3 and the said vacuum combined floodgate axle 1, and it receives the active force that trends towards near said isolation switch shaft 3.Said first driving head 51 is arranged between said driving member 50 and the said ratchet shaft 12, also can the action of said driving member 50 be passed to said ratchet shaft 12 and it is moved on axis direction; This first driving head 51 comprises: be connected the clutch on the said ratchet shaft 12, and the clutch push pedal that is connected said rod member lower end; Said clutch push pedal is provided with the propelling inclined-plane, and it contacts with said clutch and is acute angle with horizontal direction; When said rod member was positioned at higher said primary importance, said clutch was positioned near said rod member position, and said lever operated axle 11 contacts engagement with said ratchet shaft 12; When said rod member was positioned at the lower said second place, said clutch push pedal pushed away said clutch to the position away from said rod member, and said lever operated axle 11 was opened with said ratchet shaft in 12 minutes.Said rod member is prism shape and is sleeved on the fixed mount that forms fixing hole that said fixing hole limits said rod member and rotates.The trend that said rod member receives is provided by the rod member spring near the active force of said isolation switch shaft 3.Trend towards and said lever operated axle 11 contacted active forces that said ratchet shaft 12 receives are provided by the ratchet shaft spring.Said second driving head 52 is arranged between said driving member 50 and the said vacuum switch axle 2, also can the feed motion of said vacuum switch axle 2 be passed to said driving member 50.Said second driving head 52 comprises: with the shifting block of said vacuum switch axle 2 rotations, and be connected the block on the said rod member; Said shifting block is positioned at said block top and can rotates with said vacuum switch axle 2 and push said block, and then promotes said rod member and move downward to the said second place.Said the 3rd driving head 53 is arranged between said driving member 50 and the said isolation switch shaft 3, and can the closing of said isolation switch shaft 3, separating brake action be passed to said driving member 50; Said break-up device is when earthed switch separating brake or said isolation switch shaft 3 are positioned at test position, and will be said lever operated axle 11 is connected with said ratchet shaft 12, make said vacuum switch axle 2 can said vacuum close a floodgate spool 1 operate under combined floodgate; When the feed motion of said vacuum switch axle 2 is accomplished and when said isolation switch shaft 3 is positioned at isolated location or earthing position, said lever operated axle 11 was opened with said ratchet shaft in 12 minutes.Said the 3rd driving head 53 comprises: be arranged at the cam on the said isolation switch shaft 3, it rotates and is provided with the projection of corresponding isolated location of difference, two places and test position with said isolation switch shaft 3; Said rod member is positioned at the said second place when stating projections contact with two places respectively in the upper end; Said rod member is positioned at said primary importance when contacting with other position of said isolation cam outer face in the upper end.
The course of work of operating mechanism of the present invention is:
The operation of vacuum switch: the closing operation of the vacuum switch axle 2 that vacuum extinction is indoor utilizes CT21 type spring operating mechanism to realize.During the electric switch-on operation, the energy storage of motor drives switching-in spring is accomplished and is discharged switching-in spring rapidly arc control device are closed a floodgate, and electronic separating brake leans on the separating brake tripping coil to touch the separating brake semiaxis and makes it separating brake; Rotate 185 ° with the operating grip clockwise direction during manual operation, the drive switching-in spring touches can accomplish and discharge switching-in spring rapidly arc control device is closed a floodgate.Firmly press opening button, vacuum interrupter separating brake fast.
The operation of isolating switch, earthed switch: have reliable interlocking between the vacuum interrupter of combined electrical apparatus, isolating switch and the earthed switch.Isolating switch and earthed switch interlock, after operation isolation axle made isolating switch reach the isolation safe distance clockwise, connecting rod drove earthed switch and begins energy storage and combined floodgate; Earthed switch elder generation separating brake closes a floodgate behind the isolating switch when operating counterclockwise.Have only when the vacuum arc control device are in gate-dividing state, but ability disconnecting switch operation and earthed switch; When the ground connection cutter is closed, can not operate vacuum interrupter.
Fuse bump dropout separating brake: the combined electrical apparatus that is in closing position; As short circuit current or overload current during through major loop; As long as the melt fusing of a phase fuse is arranged; The striker action, the mechanical trip gear of bump combined electrical apparatus makes vacuum interrupter under the effect of tripping spring, realize reliable quick acting switching-off.
This combined electrical apparatus itself has scientific and reliable mechanical latching (see figure 3), and it can prevent incorrect switching effectively.Respectively be with a cam latching member on vacuum switch axle 2 and the isolation switch shaft 3, the locking wheel that can be free to slide is housed between two cam latching members.When isolating switch is in closing position or experiment position, the corresponding locking wheel 6 of the concave surface of isolation switch shaft 3 cam latching members, at this moment vacuum switch axle 2 can carry out closing operation.After vacuum switch axle 2 closing operations were accomplished, the locking wheel was extruded in the concave surface of isolation switch shaft 3 cam latching members by the convex surface of vacuum shaft cam latching member, and isolation switch shaft 3 is lockable and can not rotates.So just prevented to cause security incident in vacuum interrupter "on" position mistiming disconnecting switch operation; When having only vacuum interrupter to be in gate-dividing state, the concave surface of vacuum switch axle 2 cam latching members just can be taken turns in corresponding locking, could disconnecting switch operation axle 3.When being in "on" position in the isolator operation process or with the earthed switch of isolating switch interlock; The convex surface of isolation switch shaft 3 cam latching members is extruded into the locking wheel in the concave surface of vacuum switch axle 2 cam latching members; Vacuum switch axle 2 is lockable and can not rotates, and has so just prevented the vacuum interrupter false switching.And operating mechanism of the present invention make to close a floodgate, sub-switching operation carries out according to the predetermined operations order, if operating sequence mistake then can't carry out the vacuum closing operation can guarantee that interlock between vacuum switch axle 1 and the isolation switch shaft 3 is by breaking-up by force.Operating mechanism of the present invention has overcome the drawback that design upward exists simultaneously, after the vacuum combined floodgate is accomplished, arrangement of clutch is separated, and has avoided requiring great effort and has not had the operation of practical significance when driving springs again.
Certainly in other execution mode, said first driving head 51, said second driving head 52, said the 3rd driving head 53 can adopt other device to substitute respectively.Said first driving head 51 in the for example said break-up device can adopt hydraulic means to realize; Promptly utilize hydraulic principle to realize action transmission in different directions; Through utilizing the liquid transfer action of hydraulic pressure steel sealing certain volume, the action of said driving member 50 is passed to said ratchet shaft 12 and it is moved on axis direction.Because hydraulic principle belongs to known technology, is not giving unnecessary details at this.Certainly said first driving head 51 also can adopt chain system, perhaps is similar to the metal backguy system of backguy brake, perhaps pinion-and-rack system.The different actions transfer mode that the action that above-mentioned several kinds of different embodiment all are just said driving members 50 passes to said ratchet shaft 12 and it is moved on axis direction; Transmitting the protection that realizes interlocking device through action, all is the innovative ideas that belong to same.
Obviously, the foregoing description only be for explanation clearly done for example, and be not qualification to execution mode.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all execution modes.And conspicuous variation of being extended out thus or change still are among the protection range of claims of the invention.
Claims (8)
1. the operating mechanism of high-voltage vacuum load switch and fuse combined electric apparatus comprises the vacuum axle (1) that closes a floodgate, and it can drive spring operating mechanism (4) action and then drive vacuum switch axle (2) feed motion,
It is characterized in that,
The said vacuum axle (1) that closes a floodgate comprises lever operated axle (11) and the ratchet shaft (12) of coaxial setting, and said lever operated axle (11) one ends are suitable for connecting the handle of rotary manipulation, the other end with said ratchet shaft (12) but clutch be connected; Said ratchet shaft (12) and said spring operating mechanism (4) interlock and receiving trends towards and said lever operated axle (11) contacted active force;
Said operating mechanism also comprises break-up device, and it comprises:
Driving member (50);
First driving head (51), it is arranged between said driving member (50) and the said ratchet shaft (12), also can the action of said driving member (50) be passed to said ratchet shaft (12) and it is moved on axis direction;
Second driving head (52), it is arranged between said driving member (50) and the said vacuum switch axle (2), also can the feed motion of said vacuum switch axle (2) be passed to said driving member (50);
The 3rd driving head (53), it is arranged between said driving member (50) and the isolation switch shaft (3), and can the closing of said isolation switch shaft (3), separating brake action be passed to said driving member (50);
Said break-up device, is connected said lever operated axle (11) when being positioned at test position in earthed switch separating brake or said isolation switch shaft (3) with said ratchet shaft (12), make said vacuum switch axle (2) can said vacuum close a floodgate spool (1) operate under combined floodgate; When the feed motion of said vacuum switch axle (2) is accomplished and when said isolation switch shaft (3) is positioned at isolated location or earthing position, said lever operated axle (11) is separated with said ratchet shaft (12).
2. operating mechanism according to claim 1 is characterized in that:
Said driving member (50) is for vertically being arranged on the rod member between said isolation switch shaft (3) and the said vacuum combined floodgate axle (1), and it receives the active force that trends towards near said isolation switch shaft (3);
Said first driving head (51) comprising: be connected the clutch on the said ratchet shaft (12), and the clutch push pedal that is connected said rod member lower end;
Said clutch push pedal is provided with the propelling inclined-plane, and it contacts with said clutch and is acute angle with horizontal direction;
When said rod member was positioned at higher primary importance, said clutch was positioned near said rod member position, and said lever operated axle (11) contacts engagement with said ratchet shaft (12); When said rod member was positioned at the lower second place, said clutch push pedal pushed away said clutch to the position away from said rod member, and said lever operated axle (11) is separated with said ratchet shaft (12).
3. operating mechanism according to claim 2 is characterized in that:
Said second driving head (52) comprising: with the shifting block of said vacuum switch axle (2) rotation, and be connected the block on the said rod member; Said shifting block is positioned at said block top and can rotates with said vacuum switch axle (2) and push said block, and then promotes said rod member and move downward to the said second place.
4. operating mechanism according to claim 2 is characterized in that:
Said the 3rd driving head (53) comprising: be arranged at the cam on the said isolation switch shaft (3), it rotates and is provided with the projection of corresponding isolated location of difference, two places and test position with said isolation switch shaft (3); Said rod member is positioned at the said second place when stating projections contact with two places respectively in the upper end; Said rod member is positioned at said primary importance when contacting with other position of said cam outer face in the upper end.
5. according to the arbitrary described operating mechanism of claim 2 to 4, it is characterized in that: said rod member is prism shape and is sleeved on the fixed mount that forms fixing hole that said fixing hole limits said rod member and rotates.
6. according to the arbitrary described operating mechanism of claim 2 to 4, it is characterized in that: the trend that said rod member receives is provided by the rod member spring near the active force of said isolation switch shaft (3).
7. according to the arbitrary described operating mechanism of claim 2 to 4, it is characterized in that: trend towards and said lever operated axle (11) contacted active force that said ratchet shaft (12) receives are provided by the ratchet shaft spring.
8. operating mechanism according to claim 1 is characterized in that: said break-up device is a hydraulic system, perhaps chain system, perhaps metal backguy system, perhaps pinion-and-rack system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101434187A CN101556878B (en) | 2009-05-25 | 2009-05-25 | Operation mechanism of high-voltage vacuum load switch-fuse combined electric apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101434187A CN101556878B (en) | 2009-05-25 | 2009-05-25 | Operation mechanism of high-voltage vacuum load switch-fuse combined electric apparatus |
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| CN101556878A CN101556878A (en) | 2009-10-14 |
| CN101556878B true CN101556878B (en) | 2012-05-02 |
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| CN2009101434187A Active CN101556878B (en) | 2009-05-25 | 2009-05-25 | Operation mechanism of high-voltage vacuum load switch-fuse combined electric apparatus |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005321B (en) * | 2010-12-03 | 2012-11-07 | 武汉华源电气设备有限责任公司 | Operation interlocking mechanism device for breaker and isolating switch |
| CN102184804B (en) * | 2011-01-07 | 2013-08-14 | 无锡市锡山湖光电器有限公司 | Manual closing energy-storing resetting device of vacuum circuit breaker |
| CN104143771B (en) * | 2014-08-04 | 2016-05-04 | 南通星宇电气有限公司 | A kind of high-tension switch cabinet |
| EP3089186B1 (en) * | 2015-04-30 | 2019-09-11 | General Electric Technology GmbH | Electrical switchgear and method of operating an electrical switchgear |
| CN108335929A (en) * | 2017-12-28 | 2018-07-27 | 北京双杰电气股份有限公司 | A kind of five anti-interlockings |
| CN108321003B (en) * | 2018-02-12 | 2024-02-20 | 浙江紫光电器有限公司 | Operating mechanism of high-voltage vacuum load switch |
| CN113593987B (en) * | 2021-06-21 | 2024-03-01 | 国网浙江省电力有限公司湖州供电公司 | Secondary air-break misoperation-preventive locking device and misoperation-preventive locking method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2329103Y (en) * | 1997-05-05 | 1999-07-14 | 青岛机床电器厂 | Anti-fault high voltage vacuum switch cabinet |
| CN201421784Y (en) * | 2009-05-25 | 2010-03-10 | 华仪电气股份有限公司 | Operating mechanism of high-voltage load switch |
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2009
- 2009-05-25 CN CN2009101434187A patent/CN101556878B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2329103Y (en) * | 1997-05-05 | 1999-07-14 | 青岛机床电器厂 | Anti-fault high voltage vacuum switch cabinet |
| CN201421784Y (en) * | 2009-05-25 | 2010-03-10 | 华仪电气股份有限公司 | Operating mechanism of high-voltage load switch |
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