CN205645655U - Cubical switchboard three -station isolation switch - Google Patents
Cubical switchboard three -station isolation switch Download PDFInfo
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- CN205645655U CN205645655U CN201620273591.4U CN201620273591U CN205645655U CN 205645655 U CN205645655 U CN 205645655U CN 201620273591 U CN201620273591 U CN 201620273591U CN 205645655 U CN205645655 U CN 205645655U
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Abstract
The utility model provides a cubical switchboard three -station isolation switch, includes the casing to and establish static contact, the grounding static contact in the casing, establish in addition at the epaxial moving contact of song, bent axle supporting on the casing, the bent axle rotate the one end that makes the moving contact with establish electrically conductive supports contact on the casing contact all the time is connected, the other end perhaps is connected with quiet male contact, perhaps be connected with the quiet male contact of ground connection, perhaps with static contact and grounding static contact all the contactless be connected, characterized by: the moving contact for touching finger formula moving contact more. The utility model discloses a switch, electrically conductive ability is stronger, and not only isolator moves, static contact calorific capacity is little, closes, separating brake power three also little station isolator.
Description
Technical field
This utility model relates to the tri-station isolating switch of a kind of power industry switch cubicle.
Background technology
Tri-station isolating switch is the Important Components of switchgear, is widely used in the switchgear of various electric pressure, and its Main Function is:
1., for insulating power supply, high pressure repair apparatus is disconnected with charging equipment so that it is have obvious cut-off point, to ensure the safety of staff and equipment.
2. disconnecting switch coordinates with chopper, by system operation mode need carry out grid switching operation, to change system operation survey；First disconnecting switch is gone to during power transmission closing position, then breaker closing；Elder generation's breaker open operation during power-off, then disconnecting switch goes to sub-gate position.
3. in order to be switched on or switched off small area analysis circuit, disconnecting switch does not has arc-control device, therefore can not be used for cutting off load current or short circuit current.
4. ground connection effect, power circuit and power equipment are before repair and maintenance, in addition to deenergization and insulating power supply, also will be three-phase shortcircuit ground connection, its effect one be discharge residual charge on power circuit and power equipment over the ground, two be to make power circuit and power equipment keep zero potential, to prevent just in case switching on power cause personal safety accident and device damage accident.
5. holding current-carrying effect, three-station is required to carry rated operational current, Rated peak withstand current, specified KA Rms as device for switching；The destructive power of short-circuit fault of power system is very strong, and especially tri-station isolating switch is when closing position and earthing position, needs to carry the effect of specified KA Rms and Rated peak withstand current at any time；
Tri-station isolating switch realizes the connection of a circuit or ground connection is to be realized by the cooperation of dynamic and static contact, tri-station isolating switch is that contact the most passively separates and provides enough guarantees at the contact pressure that on-position or earthing position contact have itself, touch spring keeps certain pressure, contact can be reduced clash into and produce vibrations, increase through-current capability, it is to avoid contact generation melting welding.In actual motion, the moving contact of existing tri-station isolating switch is the most all man-to-man contact with the combination of static contact, owing to the mismatch error of dynamic and static contact often produces some problems, as: due to design size, machining accuracy, abrasion etc., cause the real contact area between dynamic and static contact less, contact resistance is relatively big, and during operation, temperature rise is higher；For reducing dynamic and static contact resistance, generally provide bigger dynamic and static contact power with stage clip, cause divide-shut brake power big, the more serious and more difficult operation of dynamic and static contact abrasion.
Common disconnecting switch dynamic and static contacts mates schematic diagram is as shown in Figure 1.
Utility model content
Technical problem to be solved in the utility model is exactly: provide a kind of conductive capability higher, and not only disconnecting switch dynamic and static contact caloric value is little, the tri-station isolating switch that splitting or integrating lock power is the least.
Solving above-mentioned technical problem, this utility model is achieved through the following technical solutions:
A kind of switch cubicle tri-station isolating switch, including housing, and be located in housing static contact, grounding static contact, also it is located at the moving contact on bent axle, described crankshaft support is on housing, and one end that crank rotation makes moving contact contacts connection, the other end all the time or contacts connection with static contact or contact connection with grounding static contact or the most do not contact connection with static contact and grounding static contact with the conductive supporting contact being located on housing；It is characterized in that: described moving contact is many finger-contact types moving contact, its composition structure includes:
One aluminum cover, in square tube type, from the centre of two opposing pipe wall at two ends, has long v notch v to the centre of square tube, and aluminum cover is symmetrical before and after up and down；
Two multiple pressure fingerboard springs, for parallelogram plate, a pair opposite side inwardly have multiple long v notch v, form paired long comb teeth-shaped, and comb is end finger；
The fingertip of corresponding described multiple pressure fingerboard spring logarithm, for long rectangular slab, the two ends, side of long opposite side are provided with in the middle of leaf spring limit convex position, opposite side to be provided with and rank projection up and down；
Two fingertip tablettings, for long rectangular slab, at two long opposite side on a plate face, are provided with inclined convex edge symmetrically, have some erection openings or screwed hole in the middle of plate face；
Two described multiple pressure fingerboard springs are mounted on inside the unnotched tube wall in described aluminum cover two ends respectively, described fingertip is separately mounted to described multiple pressure accordingly and refers to plate spring inside, every pair of comb corresponds to the two ends of a fingertip, fingertip is provided with the limit ranking projection up and down towards interior, two described fingertip tablettings have inclined convex along face relatively, it is arranged in the long v notch v in described aluminum cover two ends by erection opening with connector, the inclined convex edge of two fingertip tablettings makes the formation height arrangement of some fingertips misplace up and down, and two offside fingertip open width ground the projection of ranking up and down of described some fingertips is gripped.
It is matched in clearance between the groove of two described fingertip tablettings and insulation bent axle.
Described static contact and grounding static contact are tabular, and its thickness is thicker than and is contained in the fingertip open width of two offsides in aluminum cover.So just fingertip can be produced decrement when contact, it is ensured that contact has pressure.
The both sides that described tabular static contact and grounding static contact sandwich position corresponding to described fingertip are provided with gradient or arc chord angle.
Having the radial direction square through hole corresponding to described aluminum cover profile on described bent axle, two radial holes at square through hole two ends are along being provided with groove, corresponding to the two ends of described two fingertip tablettings.
Being provided with fingertip moving contact more than three groups on described bent axle, spacing each other ensures that the tri-station isolating switch of many fingertips moving contact has the electric clearance of maximum when open position.Refer to that one-piece rotor shaft, to static contact, has the electric clearance of maximum to grounding static contact.Because the transverse profile of fingertip moving contact more than three groups is all without the scope beyond insulation bent axle.
Described static contact and grounding static contact are fixed in housing with installed part by supporting.
Compared with common disconnecting switch moving contact, this disconnecting switch moving contact uses many fingertips to misplace up and down, the version being front and back mounted side by side；Many fingertips are fixed among spacing aluminum cover at two fingertip tablettings under the common effect of multiple pressure fingerboard spring, many shell fragments spring is for providing the contact pressure of dynamic and static contact, the fingertip number of moving contact is equal with the fingertip number of multiple pressure fingerboard spring, and both are relation one to one when mounted, each fingertip is separate unit when splitting or integrating lock, and each fingertip of moving contact is independent of each other with the contact pressure of static contact；The static contact of particular curve, grounding static contact, the moving contact of insulation bent axle and many finger-contact types of crankshaft structure cooperate, it is ensured that each fingertip of the moving contact engagement sequentially and exiting when splitting or integrating lock, ground connection operation.
Two fingertip tablettings ensure that the fixing of dynamic fingertip, and be fixed in the groove of insulation bent axle, ensure the electric clearance that the tri-station isolating switch of many fingertips moving contact is maximum when open position, avoid many fingertips moving contact component in the closing position point discharge to grounding static contact, at open position to static contact and the point discharge of grounding static contact, certain fit clearance is left between the groove of two fingertip tablettings and insulation bent axle, ensure when many fingertips moving contact is installed can transverse shifting, ensure that the engagement force of each dynamic and static contact distributes uniformly on each fingertip simultaneously.
Moving contact uses many fingertips to misplace up and down, the version being front and back mounted side by side, many fingertips are fixed among spacing aluminum cover at two fingertip tablettings under the common effect of multiple pressure fingerboard spring, many shell fragments spring is for providing the contact pressure of dynamic and static contact, the fingertip number of moving contact is equal with the fingertip number of multiple pressure fingerboard spring, and both are relation one to one when mounted, each fingertip is separate unit when splitting or integrating lock, and each fingertip of moving contact is independent of each other with the contact pressure of static contact；The static contact of particular curve, grounding static contact, the moving contact of insulation bent axle and many finger-contact types of crankshaft structure cooperate, it is ensured that each fingertip of the moving contact engagement sequentially and exiting when splitting or integrating lock, ground connection operation.
The beneficial effects of the utility model are:
1. moving contact uses many fingertips to misplace up and down, and the structure being front and back mounted side by side takes into full account the kelvin effect of electric current, effectively utilizes conductor material, and conductive capability is higher, area of dissipation is big, be prone to heat radiation.
2. every fingertip of moving contact and the fingertip one_to_one corresponding of multiple pressure fingerboard spring, contacting with static contact of every fingertip independence of moving contact, it is independent of each other, affected little by dynamic and static contacts mates size, ensure that the contact area that dynamic and static contact is maximum, reducing contact resistance, its caloric value is less, temperature rise is low.
3. the static contact of particular curve, grounding static contact, the insulation bent axle of crankshaft structure cooperate with the moving contact of many finger-contact types, when making dynamic and static contacts mates, fingertip order engages and exits, efficiently solve the problem that on/off switch power is big and on/off switch power is suddenlyd change, alleviate in disconnecting switch motor process, the on/off switch power sudden change impact to mechanism.
4. liang fingertip tabletting ensure that the fixing of dynamic fingertip, and be fixed in the groove of insulation bent axle, ensure the electric clearance that the tri-station isolating switch of many fingertips moving contact is maximum when open position, avoid many fingertips moving contact component 21 in the closing position point discharge to grounding static contact 18, at open position to static contact 11 and the point discharge of grounding static contact 18, i.e. serve and fixing effect is installed, it is ensured that the safe operation of equipment；Certain fit clearance is left between the groove of two fingertip tablettings and insulation bent axle, ensureing when many fingertips moving contact is installed can transverse shifting, with static contact and the better adaptability coordinated of grounding static contact, ensure that the engagement force of each dynamic and static contact distributes uniformly on each fingertip simultaneously.
Accompanying drawing explanation
The schematic diagram of the dynamic and static contacts mates of disconnecting switch that Fig. 1 a is common；
Fig. 1 b is the left view of Fig. 1 a；
Fig. 2 a is that tri-station isolating switch of the present utility model combined floodgate runs schematic diagram；
Fig. 2 b is Fig. 2 a band cross-sectional schematic；
Fig. 3 a is that tri-station isolating switch moving contact of the present utility model exits one of schematic diagram (closing position) with static contact from closing a floodgate to；
Fig. 3 b is two (separating brake process fingertip order exits) that tri-station isolating switch moving contact of the present utility model and static contact exit schematic diagram from closing a floodgate to；
Fig. 3 c is three (open positions) that tri-station isolating switch moving contact of the present utility model and static contact exit schematic diagram from closing a floodgate to；
Fig. 4 a is tri-station isolating switch moving contact of the present utility model and one of grounding static contact order mesh schematic representation；
Fig. 4 b is the two of tri-station isolating switch moving contact of the present utility model and grounding static contact order mesh schematic representation；
Fig. 4 c is the three of tri-station isolating switch moving contact of the present utility model and grounding static contact order mesh schematic representation；
Fig. 5 a is the assembling schematic diagram of tri-station isolating switch of the present utility model insulation bent axle；
Fig. 5 b is the top view of Fig. 5 a；
Fig. 5 c is the sectional view of Fig. 5 a；
Fig. 6 a is tri-station isolating switch moving contact front view of the present utility model；
Fig. 6 b is the left view of the band section view of Fig. 6 a；
Fig. 7 a is the front view of tri-station isolating switch of the present utility model insulation bent axle；
Fig. 7 b is the top view of insulation bent axle；
Fig. 7 c is the schematic perspective view of insulation bent axle；
Fig. 8 a is tri-station isolating switch multiple pressure fingerboard spring schematic diagram of the present utility model；
Fig. 8 b is tri-station isolating switch multiple pressure fingerboard spring top view of the present utility model；
Fig. 9 a is tri-station isolating switch fingertip front view of the present utility model；
Fig. 9 b is tri-station isolating switch fingertip left view of the present utility model；
Fig. 9 c is tri-station isolating switch fingertip top view of the present utility model；
Figure 10 a is three-station isolating switch contact schematic diagram of the present utility model；
Figure 10 b is the right view of Figure 10 a；
Figure 11 a is tri-station isolating switch grounding static contact schematic diagram of the present utility model；
Figure 11 b is the right view of Figure 11 a；
Figure 11 c is the attached view of Figure 11 b；
Figure 12 a is tri-station isolating switch finger pressure sheet cross-sectional schematic of the present utility model；
Figure 12 b is the right view of Figure 12 a；
Figure 12 c is the attached view of Figure 12 a；
Figure 13 is the insulation bent axle schematic perspective view installing moving contact；
Figure 14 is moving contact the Nomenclature Composition and Structure of Complexes schematic perspective view；
Figure 15 is fingertip tabletting schematic perspective view.
In figure, reference represents: 1-installing plate, 2-rotating shaft fixed support, 3-rotating shaft, 4-rotating shaft connecting lever, 5-insulated tension pole, 8-moving contact compression spring, 11-static contact, 12-moving contact, 13-conductive supporting contact, 14-conductive supporting flange, 15-bearing block, 16-support sleeve, 17-operates connecting lever, 18-grounding static contact, 22-insulate bent axle, 31-multiple pressure fingerboard spring, and 32-fixes bolt, 33-aluminum cover, 34-fingertip, 35-fingertip tabletting.
Detailed description of the invention
Fig. 1 a and Fig. 1 b is the disconnecting switch dynamic and static contacts mates schematic diagram of prior art, and moving contact only one of which fingertip, is man-to-man contact with the combination of static contact.
Fig. 2 a, Fig. 2 b are that tri-station isolating switch of the present utility model combined floodgate runs schematic diagram.
Switch cubicle tri-station isolating switch embodiment of the present utility model, including housing, and be located in housing static contact, grounding static contact, be also located at the moving contact on insulation bent axle.
Insulation crankshaft support is on housing, and one end that insulation crank rotation makes moving contact contacts connection, the other end all the time or contacts connection with static contact or contact connection with grounding static contact or the most do not contact connection with static contact and grounding static contact with the conductive supporting contact being located on housing.
Wherein moving contact is many finger-contact types moving contact, sees Fig. 6 a Fig. 6 b of accompanying drawing, and the composition structure of many finger-contact types moving contact includes:
One aluminum cover 33, in square tube type, from the centre of two opposing pipe wall at two ends, has long v notch v to the centre of square tube, and aluminum cover is symmetrical before and after up and down；
Two multiple pressure fingerboard springs 31, for parallelogram plate, a pair opposite side inwardly have multiple long v notch v, form paired long comb teeth-shaped, and comb is end finger；
The fingertip 34 of corresponding described multiple pressure fingerboard spring logarithm, for long rectangular slab, the two ends, side of long opposite side are provided with in the middle of leaf spring limit convex position, opposite side to be provided with and rank projection up and down；
(upper and lower fingertip tabletting overall dimensions is the same, opens circular hole for one, opens thread bush for one for two fingertip tablettings 35, bolt is installed use), for long rectangular slab, at two long opposite side on a plate face, it is provided with inclined convex edge symmetrically, in the middle of plate face, has some erection openings；
Two multiple pressure fingerboard springs 31 are mounted on inside the unnotched tube wall in aluminum cover 33 two ends respectively, fingertip 34 is separately mounted to inside multiple pressure fingerboard spring 31 accordingly, every pair of comb corresponds to the two ends of a fingertip 34, fingertip is provided with the limit ranking projection up and down towards interior, two fingertip tablettings 35 have inclined convex along face relatively, it is arranged in the long v notch v in aluminum cover 33 two ends by erection opening with fixing bolt 32, the inclined convex edge of two fingertip tablettings makes the formation height arrangement of some fingertips misplace up and down, and two offside fingertip open width ground the projection of ranking up and down of described some fingertips is gripped.
Make during design between the groove of two fingertip tablettings and insulation bent axle as matched in clearance, so ensure when many fingertips moving contact is installed can transverse shifting, ensure that the engagement force of each dynamic and static contact distributes uniformly on each fingertip simultaneously.
Seeing Figure 10 a and Figure 10 b, and Figure 11 a, Figure 11 b and Figure 11 c, static contact and grounding static contact are tabular, its thickness adapts to be thicker than and is contained in the fingertip open width of two offsides in aluminum cover；Tabular static contact and grounding static contact sandwich the both sides at position corresponding to fingertip and are provided with gradient or arc chord angle, lock static contact and grounding static contact by supporting and installed part is fixed in housing.
Seeing Fig. 7 a, Fig. 7 b and Fig. 7 c, insulation bent axle has the radial direction square through hole corresponding to aluminum cover profile, two radial holes at square through hole two ends are along being provided with groove, corresponding to the two ends of two fingertip tablettings；Being provided with fingertip moving contact more than three groups on bent axle, spacing each other ensures that the tri-station isolating switch of many fingertips moving contact has the electric clearance of maximum when open position.
Two fingertip tablettings ensure that the Heterogeneous Permutation up and down of dynamic fingertip, and be fixed in the groove of insulation bent axle, ensure the electric clearance that the tri-station isolating switch of many fingertips moving contact is maximum when open position, avoid many fingertips moving contact component in the closing position point discharge to grounding static contact, at open position to static contact and the point discharge of grounding static contact, between the groove of two fingertip tablettings and insulation bent axle, leave certain fit clearance.
Fig. 3 a, Fig. 3 b and Fig. 3 c are the schematic diagram that tri-station isolating switch moving contact of the present utility model and static contact exit three Working pasitions from closing a floodgate to.
Such as Fig. 3, Fig. 4, also shown in Fig. 5, Fig. 6, many fingertips tri-station isolating switch is made up of the moving contact 12 of many finger-contact types and the insulation bent axle 22 of crankshaft structure, installs including matched static contact 11 and grounding static contact 18 and supporting.
Fingertip 34 is symmetrical to be arranged in aluminum cover 33, its quantity is by depending on size of current, thering is provided contact force during dynamic and static contacts mates on fingertip under the effect jointly of tabletting 35, fingertip lower sheeting 36 and many film pressure plates spring 31 (left and right each a piece), the end finger number of multiple pressure fingerboard spring 31 is identical with the number of fingertip 34.
Ensure during installation that every fingertip has the shell fragment of correspondence to provide elastic force, each fingertip is made to become the unit separately providing dynamic and static contact power, will not have an impact each other, even if there is error or certain abrasion occurs in the fit dimension of the moving contact 12 of static contact 11 and grounding static contact 18 and many finger-contact types, each fingertip all can be with static contact good contact, ensure that the contact area of dynamic and static contact, and contact force is relatively uniform.On fingertip, tabletting 35 ensure that the fixing of fingertip 34, and its part stretched out is fixed and has in the groove of insulation bent axle 22 of crankshaft structure, it is ensured that the electric clearance that the tri-station isolating switch of many fingertips moving contact is maximum when open position, safe and reliable to operation；Certain fit clearance is left, it is ensured that with the coordinating of static contact 11 and grounding static contact 18 when many fingertips moving contact 12 is installed between the groove of the insulation bent axle 22 of fingertip tabletting 35 and crankshaft structure.When combined floodgate, the operation of separating brake ground connection, static contact 11 and the grounding static contact 18 with particular curve cooperate with the moving contact 12 with many finger-contact types, ensure the engagement of fingertip order and exit, efficiently solve the problem that on/off switch power is big and on/off switch power is suddenlyd change, alleviate in disconnecting switch motor process, the on/off switch power sudden change impact to mechanism.And common dynamic and static contacts mates, the most dynamic and static contact, contact force remains maximum, and during splitting or integrating lock, operating physical force is big, and the impact to mechanism is big.
The design that insulation bent axle 22 is special crankshaft structure of crankshaft structure, its generally insulant compression molding, it is ensured that the concordance that the moving contact 12 of the many finger-contact types of tri-station isolating switch is installed, it is ensured that the synchronism of splitting or integrating lock；Groove on the insulation bent axle 22 of crankshaft structure ensure that the convenience of installation.
Many film pressure plates spring 31 is symmetrical to be made, and sets and have and fingertip 34 end finger one to one, it is ensured that each fingertip all can be with static contact good contact.
Fingertip 34 is single chip architecture, and dislocation is mounted side by side；Each fingertip size dimension of single chip architecture is identical is prone to processing, and the fingertip conductive capability that dislocation is mounted side by side is strong, and area of dissipation is big, and temperature rise is low.
Static contact 11 and grounding static contact 18 have carried out design and the rounding design of special shape curve, and each pair of fingertip order engagement of moving contact when the curve of special shape ensures to close a floodgate, rounding ensures the rounding off during engagement of sound, contact, reduces frictional resistance.Avoid the many finger-contact types moving contact 12 point discharge when open position, it is ensured that the safe operation of equipment.
As shown in Figure 12 and Figure 13, the rounding design of fingertip tabletting 35 avoids the moving contact 12 of many finger-contact types in the closing position point discharge to grounding static contact 18, at open position to static contact 11 and the point discharge of grounding static contact 18, i.e. serve and fixing effect is installed, it is ensured that the safe operation of equipment.
Claims (5)
1. a switch cubicle tri-station isolating switch, including housing, and be located in housing static contact, grounding static contact, also it is located at the moving contact on bent axle, described crankshaft support is on housing, and one end that crank rotation makes moving contact contacts connection, the other end all the time or contacts connection with static contact or contact connection with grounding static contact or the most do not contact connection with static contact and grounding static contact with the conductive supporting contact being located on housing；It is characterized in that: described static contact and grounding static contact are tabular, described moving contact is many finger-contact types moving contact, and its composition structure includes:
One aluminum cover, in square tube type, from the centre of two opposing pipe wall at two ends, has long v notch v to the centre of square tube；
Two multiple pressure fingerboard springs, for parallelogram plate, a pair opposite side inwardly have multiple long v notch v, form paired long comb teeth-shaped, and comb is end finger；
The fingertip of corresponding described multiple pressure fingerboard spring end finger logarithm, for long rectangular slab, the two ends, side of long opposite side are provided with in the middle of leaf spring limit convex position, opposite side to be provided with and rank projection up and down；
Two fingertip tablettings, for long rectangular slab, at two long opposite side on a plate face, are provided with inclined convex edge symmetrically, have some erection openings or screwed hole in the middle of plate face；
Two described multiple pressure fingerboard springs are mounted on inside the unnotched tube wall in described aluminum cover two ends respectively, described fingertip is separately mounted to described multiple pressure accordingly and refers to plate spring inside, every pair of comb corresponds to the two ends of a fingertip, fingertip is provided with the limit ranking projection up and down towards interior, two described fingertip tablettings have inclined convex along face relatively, it is arranged in the long v notch v in described aluminum cover two ends by erection opening with connector, the inclined convex edge of two fingertip tablettings makes the formation height arrangement of some fingertips misplace up and down, and two offside fingertip open width ground the projection of ranking up and down of described some fingertips is gripped.
Switch cubicle tri-station isolating switch the most according to claim 1, it is characterized in that: on described bent axle, have the radial direction square through hole corresponding to described aluminum cover profile, two radial holes at square through hole two ends are along being provided with groove, and groove is corresponding to the two ends of described two fingertip tablettings.
Switch cubicle tri-station isolating switch the most according to claim 2, is characterized in that: for matched in clearance between the groove of two described fingertip tablettings and insulation bent axle.
Switch cubicle tri-station isolating switch the most according to claim 3, it is characterized in that: described tabular static contact and grounding static contact sandwich the both sides at position corresponding to described fingertip and be provided with gradient or arc chord angle, described static contact and grounding static contact by supporting and installed part is fixed in housing.
Switch cubicle tri-station isolating switch the most according to claim 4, it is characterized in that: be provided with fingertip moving contact more than three groups on described bent axle, spacing each other ensures that the tri-station isolating switch of many fingertips moving contact has the electric clearance of maximum when open position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620273591.4U CN205645655U (en) | 2016-04-01 | 2016-04-01 | Cubical switchboard three -station isolation switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620273591.4U CN205645655U (en) | 2016-04-01 | 2016-04-01 | Cubical switchboard three -station isolation switch |
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| CN205645655U true CN205645655U (en) | 2016-10-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105869942A (en) * | 2016-04-01 | 2016-08-17 | 广州白云电器设备股份有限公司 | Three-position isolation switch for switch cabinet |
| RU216706U1 (en) * | 2022-11-07 | 2023-02-21 | Общество с ограниченной ответственностью "ИНЕСК" | Contact knife of high-voltage disconnector |
-
2016
- 2016-04-01 CN CN201620273591.4U patent/CN205645655U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105869942A (en) * | 2016-04-01 | 2016-08-17 | 广州白云电器设备股份有限公司 | Three-position isolation switch for switch cabinet |
| RU216706U1 (en) * | 2022-11-07 | 2023-02-21 | Общество с ограниченной ответственностью "ИНЕСК" | Contact knife of high-voltage disconnector |
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