CN214624787U - Contact structure of combined type vacuum on-load tap-changer - Google Patents
Contact structure of combined type vacuum on-load tap-changer Download PDFInfo
- Publication number
- CN214624787U CN214624787U CN202121138095.5U CN202121138095U CN214624787U CN 214624787 U CN214624787 U CN 214624787U CN 202121138095 U CN202121138095 U CN 202121138095U CN 214624787 U CN214624787 U CN 214624787U
- Authority
- CN
- China
- Prior art keywords
- moving contact
- change
- over switch
- contact
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The utility model discloses a contact structure of a combined type vacuum on-load tap-changer, which comprises an output moving contact, an input moving contact, a first and a second change-over switch moving contacts, the oil chamber is sequentially arranged on a first mounting plate from top to bottom, a linear bearing is arranged on the first mounting plate, an output moving contact, an input moving contact, a first change-over switch moving contact and a second change-over switch moving contact are all arranged in the linear bearing, one end of the linear bearing is provided with a spring support, the spring support and the linear bearing are fixed on the first mounting plate through fasteners, springs are arranged between the spring support and the output moving contact, between the spring support and the input moving contact as well as between the spring support and the first change-over switch moving contact as well as between the spring support and the second change-over switch moving contact as well as between the input moving contact and the second change-over switch moving contact, a leading-out static contact is arranged on the oil chamber corresponding to the position of the output moving contact, and a conducting ring is arranged on the oil chamber corresponding to the position of the input moving contact, the first change-over switch moving contact and the second change-over switch moving contact. The utility model discloses simple structure, stable performance are reliable, with low costs.
Description
Technical Field
The utility model belongs to the technical field of on-load tap-changer, concretely relates to combined type vacuum has on-load tap-changer's contact structure.
Background
When the combined type on-load tap-changer is switched, the switching core needs to rotate along the circumference at a high speed, and a moving contact on the switching core and a static contact on an oil chamber also have relative motion on the circumference, so that the contact between the moving contact and the static contact cannot be realized in a split mode.
A rolling mode: the input/output moving contact is welded and connected into a whole by adopting a soft stranded wire, when in switching, the output contact is always connected with the oil chamber conducting ring, the input contact is disconnected and connected with the oil chamber static contact according to the program requirement, the pressure of the input and output contacts is inconsistent, the switch is switched once under the condition, the input/output moving contact has relative rotation, the two ends of the soft stranded wire have relative rotation angles, the soft stranded wire is extremely easy to break after repeated rotation for many times, the current carrying capacity of the switch can be reduced, the service life of the whole switch can be shortened, and meanwhile, the manufacturing cost of the structural part is high.
The clamping piece mode: the structure is composed of two clamping piece moving contacts and a fixed contact, the structure has high requirements on the processing precision of parts, and the precision is not easy to guarantee when the parts are processed due to the high height of a switch. When the structure rotates at a high speed, the clamping piece moving contact and the fixed contact rotate relatively at a high speed, and once the clamping piece moving contact and the fixed contact are not matched in place, the whole switch is extremely easy to block, so that the switch is burnt.
Therefore, there is a great need for improvement of the current combined on-load tap changer contact system to meet the use requirements.
Disclosure of Invention
In order to solve the above problems, the present invention provides a contact structure of a combined vacuum on-load tap-changer.
A contact structure of a combined type vacuum on-load tap-changer is installed on a rotating structure of the vacuum on-load tap-changer, the rotating structure is the prior art, so the rotating structure is only simply introduced in the application and is not repeated, the rotating structure is integrally divided into three layers, each layer has the same structure, each layer comprises a base (not shown in the figure and the same below), an insulating lath, a first mounting plate, a second mounting plate, a third mounting plate, an insulating shaft, a contact structure, a first vacuum arc-extinguishing chamber and a second vacuum arc-extinguishing chamber, the whole rotating structure is located on the base and rotates around the insulating shaft, the first mounting plate is fixed on the second mounting plate and the third mounting plate, the second mounting plate and the third mounting plate are fixed on the insulating lath, the first vacuum arc-extinguishing chamber and the second vacuum arc-extinguishing chamber are arranged between the second mounting plate and the third mounting plate, the contact structure is arranged on the first mounting plate, and an oil chamber is arranged outside the whole contact structure, the contact structure comprises an output moving contact, an input moving contact, a first change-over switch moving contact and a second change-over switch moving contact which are sequentially arranged on a first mounting plate from top to bottom, a linear bearing is arranged on the first mounting plate, the output moving contact, the input moving contact, the first change-over switch moving contact and the second change-over switch moving contact are all arranged in the linear bearing and penetrate through the first mounting plate, the linear bearing is responsible for supporting and positioning the output moving contact, the input moving contact, the first change-over switch moving contact and the second change-over switch moving contact, so that when a switch core moves circumferentially, the output moving contact, the input moving contact, the first change-over switch moving contact and the second change-over switch moving contact can flexibly move along the radial direction, a spring support is arranged at one end of the linear bearing, the spring support and the linear bearing are fixed on the first mounting plate through fasteners, and the spring support and the output moving contact, Springs are arranged among the input moving contact, the first change-over switch moving contact and the second change-over switch moving contact, the springs provide power for radial movement for the output moving contact, the input moving contact, the first change-over switch moving contact and the second change-over switch moving contact, current carrying reliability is guaranteed, a leading-out static contact is arranged on the oil chamber corresponding to the output moving contact, a conducting ring is arranged at one end of the leading-out static contact and is responsible for outputting current of the first change-over switch moving contact and the second change-over switch moving contact, an input static contact is arranged on the oil chamber corresponding to the input moving contact, the first change-over switch moving contact and the second change-over switch moving contact, the input static contact is connected with a transformer coil tap to guide input current of a transformer into the change-over switch, the output moving contact is electrically connected with the input moving contact, the first change-over switch moving contact is electrically connected with the first vacuum arc extinguish chamber, and the second change-over switch moving contact is electrically connected with the second vacuum arc extinguish chamber, the first vacuum arc extinguish chamber and the second vacuum arc extinguish chamber are electrically connected with the output moving contact.
In order to be suitable for different occasions, the number of the output moving contacts and the input moving contacts is 1 or more.
Furthermore, the number of the output moving contacts and the number of the input moving contacts are 3.
In order to facilitate connection, one ends of the output moving contact, the input moving contact, the first change-over switch moving contact and the second change-over switch moving contact are provided with connecting shafts, one ends of the connecting shafts are threaded sections, nuts and supporting pieces are arranged on the threaded sections, the nuts are used for fixing the supporting pieces, the springs are arranged between the spring supporting pieces and the supporting pieces, and the spring supporting pieces and the supporting pieces guarantee the fixation and the positioning of the springs.
In order to ensure reliable connection and prevent the nut from loosening after being fastened, the thread section is provided with a disc spring and a backstop gasket, and the disc spring and the backstop gasket are arranged on the other side of the nut.
The utility model discloses combined type vacuum has tap changer's contact structure, compared with the prior art, its beneficial effect lies in: 1. the utility model has simple structure, stable and reliable performance and low cost, can increase the current carrying capacity of the switch, when the moving contact rotates along the circumferential direction, the moving contact can flexibly move along the radial direction through the linear bearing, thereby prolonging the service life of the combined type vacuum switch, improving the overall performance of the combined type vacuum switch and improving the service performance of the transformer; 2. the utility model discloses when change over switch switches, can be with load current by a tap change to another tap under the condition of not cutting off the power supply.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of embodiment 1 of a contact structure of a combined type vacuum on-load tap-changer of the present invention;
fig. 2 is a schematic structural diagram of embodiment 2 of the contact structure of the combined type vacuum on-load tap-changer of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is a top view of FIG. 2;
fig. 5 is a left side view of fig. 2.
As shown in the figure, 1-insulating lath, 2-mounting plate I, 3-mounting plate II, 4-mounting plate III, 5-insulating shaft, 6-vacuum arc extinguish chamber I, 7-vacuum arc extinguish chamber II, 8-oil chamber, 9-fastener, 10-conducting ring, 11-linear bearing, 12-spring support, 13-output moving contact, 14-disc spring, 15-backstop gasket, 16-nut, 17-support, 18-spring, 19-input moving contact, 20-input static contact, 21-lead-out static contact, 22-change-over switch moving contact I and 23-change-over switch moving contact II.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
It should be understood that the drawings of the present application are only used to match the contents disclosed in the specification, so as to be known and read by those skilled in the art, and not to limit the practical limitations of the present invention, so that the present application does not have any technical significance, and any modification of the structure, change of the ratio relationship, or adjustment of the size should still fall within the scope of the present application without affecting the function and the achievable purpose of the present application. Meanwhile, the terms such as "upper" and "lower" used in the present specification are for convenience of description and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be considered as the scope of the present invention without substantial changes in the technical content.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
As shown in fig. 1, a contact structure of a combined type vacuum on-load tap changer is installed on a rotating structure of the vacuum on-load tap changer, the rotating structure is the prior art, so the rotating structure is only briefly introduced in the present application and is not described again, the rotating structure is integrally divided into three layers, each layer has the same structure, each layer includes a base (not shown in the figure, the same below), an insulating lath 1, a mounting plate one 2, a mounting plate two 3, a mounting plate three 4, an insulating shaft 5, a contact structure, a vacuum arc-extinguishing chamber one 6 and a vacuum arc-extinguishing chamber two 7, the whole rotating structure is located on the base and rotates around the insulating shaft 5, the mounting plate one 2 is fixed on the mounting plate two 3 and the mounting plate three 4, the mounting plate two 3 and the mounting plate three 4 are fixed on the insulating lath 1, the vacuum arc-extinguishing chamber one 6 and the vacuum arc-extinguishing chamber two 7 are arranged between the mounting plate two 3 and the mounting plate three 4, the contact structure is arranged on a mounting plate I2, an oil chamber 8 is arranged outside the whole contact structure, the contact structure comprises an output moving contact 13, an input moving contact 19, a change-over switch moving contact I22 and a change-over switch moving contact II 23, the output moving contact 13, the input moving contact 19, the change-over switch moving contact I22 and the change-over switch moving contact II 23 are sequentially arranged on the mounting plate I2 from top to bottom, a linear bearing 11 is arranged on the mounting plate I2, the output moving contact 13, the input moving contact 19, the change-over switch moving contact I22 and the change-over switch moving contact II 23 are all arranged in the linear bearing 11 and penetrate through the mounting plate I2, the linear bearing 11 is used for supporting and positioning the output moving contact 13, the input moving contact 19, the change-over switch moving contact I22 and the change-over switch moving contact II 23, and the output moving contact 13, the input moving contact 19, the change-over switch moving contact I22 and the change-over switch moving contact II 23 can flexibly move along the radial direction when the switch core moves circumferentially, a spring support 12 is arranged at one end of the linear bearing 11, the spring support 12 and the linear bearing 11 are fixed on the mounting plate 2 through a fastener 9, springs 18 are arranged among the spring support 12, the output moving contact 13, the input moving contact 19, the first change-over switch moving contact 22 and the second change-over switch moving contact 23, the springs 18 provide power for radial movement for the output moving contact 13, the input moving contact 19, the first change-over switch moving contact 22 and the second change-over switch moving contact 23, and ensure reliable current carrying, a leading-out static contact 21 is arranged at a position on the oil chamber 8 corresponding to the output moving contact 13, a conducting ring 10 is arranged at one end of the leading-out static contact 21 and is responsible for outputting current of the first change-over switch moving contact 22 and the second change-over switch moving contact 23, and an input static contact 20 is arranged at a position on the oil chamber 8 corresponding to the input moving contact 19, the first change-over switch moving contact 22 and the second change-over switch moving contact 23, the input static contact 20 is connected with a transformer coil tap to guide the input current of the transformer into the change-over switch, the output moving contact 13 is electrically connected with the input moving contact 19, the first change-over switch moving contact 22 is electrically connected with the first vacuum arc-extinguishing chamber 6, the second change-over switch moving contact 23 is electrically connected with the second vacuum arc-extinguishing chamber 7, and both the first vacuum arc-extinguishing chamber 6 and the second vacuum arc-extinguishing chamber 7 are electrically connected with the output moving contact 13.
In order to be suitable for different occasions, the number of the output moving contacts 13 and the number of the input moving contacts 19 are both 1.
For convenience of connection, a connecting shaft is arranged at one end of each of the output moving contact 13, the input moving contact 19, the first change-over switch moving contact 22 and the second change-over switch moving contact 23, a threaded section is arranged at one end of each connecting shaft, a nut 16 and a supporting piece 17 are arranged on the threaded section, the nut 16 is used for fixing the supporting piece 17, the spring 18 is arranged between the spring supporting piece 12 and the supporting piece 17, and the spring supporting piece 12 and the supporting piece 17 ensure the fixing and positioning of the spring 18.
In order to ensure reliable connection and prevent the nut 16 from loosening after being fastened, a disc spring 14 and a backstop gasket 15 are arranged on the thread section, and the disc spring 14 and the backstop gasket 15 are arranged on the other side of the nut 16.
Example 2
As shown in fig. 2-5, a contact structure of a combined type vacuum on-load tap changer is installed on a rotating structure of the vacuum on-load tap changer, the rotating structure is the prior art, so the rotating structure is only briefly introduced in this application and is not described again, the rotating structure is integrally divided into three layers, each layer has the same structure, each layer comprises a base (not shown in the figure, the same below), an insulating lath 1, a mounting plate one 2, a mounting plate two 3, a mounting plate three 4, an insulating shaft 5, a contact structure, a vacuum arc-extinguishing chamber one 6 and a vacuum arc-extinguishing chamber two 7, the whole rotating structure is located on the base and rotates around the insulating shaft 5, the mounting plate one 2 is fixed on the mounting plate two 3 and the mounting plate three 4, the mounting plate two 3 and the mounting plate three 4 are fixed on the insulating lath 1, the vacuum arc-extinguishing chamber one 6 and the vacuum arc-extinguishing chamber two 7 are arranged between the mounting plate two 3 and the mounting plate three 4, the contact structure is arranged on a mounting plate I2, an oil chamber 8 is arranged outside the whole contact structure, the contact structure comprises an output moving contact 13, an input moving contact 19, a change-over switch moving contact I22 and a change-over switch moving contact II 23, the output moving contact 13, the input moving contact 19, the change-over switch moving contact I22 and the change-over switch moving contact II 23 are sequentially arranged on the mounting plate I2 from top to bottom, a linear bearing 11 is arranged on the mounting plate I2, the output moving contact 13, the input moving contact 19, the change-over switch moving contact I22 and the change-over switch moving contact II 23 are all arranged in the linear bearing 11 and penetrate through the mounting plate I2, the linear bearing 11 is used for supporting and positioning the output moving contact 13, the input moving contact 19, the change-over switch moving contact I22 and the change-over switch moving contact II 23, and the output moving contact 13, the input moving contact 19, the change-over switch moving contact I22 and the change-over switch moving contact II 23 can flexibly move along the radial direction when the switch core moves circumferentially, a spring support 12 is arranged at one end of the linear bearing 11, the spring support 12 and the linear bearing 11 are fixed on the mounting plate 2 through a fastener 9, springs 18 are arranged among the spring support 12, the output moving contact 13, the input moving contact 19, the first change-over switch moving contact 22 and the second change-over switch moving contact 23, the springs 18 provide power for radial movement for the output moving contact 13, the input moving contact 19, the first change-over switch moving contact 22 and the second change-over switch moving contact 23, and ensure reliable current carrying, a leading-out static contact 21 is arranged at a position on the oil chamber 8 corresponding to the output moving contact 13, a conducting ring 10 is arranged at one end of the leading-out static contact 21 and is responsible for outputting current of the first change-over switch moving contact 22 and the second change-over switch moving contact 23, and an input static contact 20 is arranged at a position on the oil chamber 8 corresponding to the input moving contact 19, the first change-over switch moving contact 22 and the second change-over switch moving contact 23, the input static contact 20 is connected with a transformer coil tap to guide the input current of the transformer into the change-over switch, the output moving contact 13 is electrically connected with the input moving contact 19, the first change-over switch moving contact 22 is electrically connected with the first vacuum arc-extinguishing chamber 6, the second change-over switch moving contact 23 is electrically connected with the second vacuum arc-extinguishing chamber 7, and both the first vacuum arc-extinguishing chamber 6 and the second vacuum arc-extinguishing chamber 7 are electrically connected with the output moving contact 13.
In order to be suitable for different occasions, the number of the output moving contacts 13 and the number of the input moving contacts 19 are 3.
For convenience of connection, a connecting shaft is arranged at one end of each of the output moving contact 13, the input moving contact 19, the first change-over switch moving contact 22 and the second change-over switch moving contact 23, a threaded section is arranged at one end of each connecting shaft, a nut 16 and a supporting piece 17 are arranged on the threaded section, the nut 16 is used for fixing the supporting piece 17, the spring 18 is arranged between the spring supporting piece 12 and the supporting piece 17, and the spring supporting piece 12 and the supporting piece 17 ensure the fixing and positioning of the spring 18.
In order to ensure reliable connection and prevent the nut 16 from loosening after being fastened, a disc spring 14 and a backstop gasket 15 are arranged on the thread section, and the disc spring 14 and the backstop gasket 15 are arranged on the other side of the nut 16.
The utility model discloses a realize through following mode: the insulating board strip 1 drives the second mounting board 3 and the third mounting board 4 to rotate, the second mounting board 3 and the third mounting board 4 drive the first mounting board 2 to rotate, and at the beginning, current is led in through the input static contact 20 and the input moving contact 19 and is led out through the output moving contact 13; when the input moving contact 19 is disconnected, current is led in through the first change-over switch moving contact 22 and is led out from the output moving contact 13 through the first vacuum arc-extinguishing chamber 6; when the second vacuum arc extinguish chamber 7 is disconnected, current is led in through the first change-over switch moving contact 23 and led out to the output moving contact 13 through the first vacuum arc extinguish chamber 6, and when the second change-over switch moving contact 23 is connected with the input static contact 20 of the other tap, current is led in through the first change-over switch moving contact 22 and led out to the output moving contact 13 through the first vacuum arc extinguish chamber 6; when the second vacuum arc extinguish chamber 7 is closed, the current of the tap is led in through the first change-over switch moving contact 22 and is led out to the output moving contact 13 through the first vacuum arc extinguish chamber 6, and the current of the other tap is led in through the second change-over switch moving contact 23 and is led out to the output moving contact 13 through the second vacuum arc extinguish chamber 7; when the first vacuum arc extinguish chamber 6 is disconnected, current is led in through the second change-over switch moving contact 23 and is led out from the second vacuum arc extinguish chamber 7 to the output moving contact 13, and at the moment, the current is switched to another tap; the first change-over switch moving contact 22 is disconnected, current is led in through the second change-over switch moving contact 23 and led out from the output moving contact 13 through the second vacuum arc-extinguishing chamber 7, the first change-over switch moving contact 22 is connected with the input static contact 20 of the other tap, and the current is led in through the second change-over switch moving contact 23 and led out from the output moving contact 13 through the second vacuum arc-extinguishing chamber 7; when the vacuum arc-extinguishing chamber I6 is closed, current is led in through the change-over switch moving contact I22 and is led out from the output moving contact 13 through the vacuum arc-extinguishing chamber I6; when the switching is completed, the current is led in through the input moving contact 19 and is led out through the output moving contact 13.
The protection scope of the present invention is not limited to the technical solution disclosed in the specific embodiment, and all the modifications, equivalent replacements, improvements, etc. made by the technical entity of the present invention to the above embodiments all fall into the protection scope of the present invention.
Claims (5)
1. The utility model provides a combined type vacuum has contact structure of tap-changer, this contact structural mounting has on the rotating-structure of tap-changer in the vacuum, rotating-structure wholly divide into the three-layer, each layer structure is the same, each layer includes the base, insulating lath, mounting panel one, mounting panel two, mounting panel three, insulating axle, contact structure, vacuum interrupter one and vacuum interrupter two, whole rotating-structure is located on the base and is rotatory around insulating axle, mounting panel one is fixed on mounting panel two and mounting panel three, mounting panel two and mounting panel three are fixed on insulating lath, vacuum interrupter one, vacuum interrupter two locates between mounting panel two and the mounting panel three, contact structure locates mounting panel one, whole contact structure is equipped with grease chamber outward, its characterized in that: the contact structure comprises an output moving contact, an input moving contact, a first change-over switch moving contact and a second change-over switch moving contact which are sequentially arranged on a first mounting plate from top to bottom, a linear bearing is arranged on the first mounting plate, the output moving contact, the input moving contact, the first change-over switch moving contact and the second change-over switch moving contact are all arranged in the linear bearing and penetrate through the first mounting plate, a spring supporting piece is arranged at one end of the linear bearing, the spring supporting piece and the linear bearing are fixed on the first mounting plate through a fastening piece, springs are arranged among the spring supporting piece, the output moving contact, the input moving contact, the first change-over switch moving contact and the second change-over switch moving contact, a leading-out static contact is arranged at the position, corresponding to the output moving contact, on the oil chamber, a conducting ring is arranged at one end of the leading-out static contact, and input static contacts are arranged at the positions, corresponding to the input moving contact, the first change-over switch moving contact and the second change-over switch moving contact, the output moving contact is electrically connected with the input moving contact, the first change-over switch moving contact is electrically connected with the first vacuum arc extinguish chamber, the second change-over switch moving contact is electrically connected with the second vacuum arc extinguish chamber, and the first vacuum arc extinguish chamber and the second vacuum arc extinguish chamber are both electrically connected with the output moving contact.
2. The contact structure of the compound vacuum on-load tap-changer according to claim 1, wherein the number of the output moving contacts and the input moving contacts is 1 or more.
3. The contact structure of the combined type vacuum on-load tap-changer according to claim 2, wherein the number of the output moving contacts and the number of the input moving contacts are 3.
4. The contact structure of the combined type vacuum on-load tap-changer according to claim 1 or 2, wherein one end of the output moving contact, the input moving contact, the first change-over switch moving contact and the second change-over switch moving contact is provided with a connecting shaft, one end of the connecting shaft is a threaded section, the threaded section is provided with a nut and a support member, and the spring is arranged between the spring support member and the support member.
5. The contact structure of the combined type vacuum on-load tap-changer according to claim 4, wherein a disk spring and a backstop gasket are arranged on the thread section, and the disk spring and the backstop gasket are arranged on the other side of the nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121138095.5U CN214624787U (en) | 2021-05-26 | 2021-05-26 | Contact structure of combined type vacuum on-load tap-changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121138095.5U CN214624787U (en) | 2021-05-26 | 2021-05-26 | Contact structure of combined type vacuum on-load tap-changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214624787U true CN214624787U (en) | 2021-11-05 |
Family
ID=78410550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121138095.5U Active CN214624787U (en) | 2021-05-26 | 2021-05-26 | Contact structure of combined type vacuum on-load tap-changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214624787U (en) |
-
2021
- 2021-05-26 CN CN202121138095.5U patent/CN214624787U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101681730B (en) | Switching arrangement | |
| RU97117601A (en) | STEP-LOAD LOAD SWITCH | |
| CN214624787U (en) | Contact structure of combined type vacuum on-load tap-changer | |
| CN200944364Y (en) | Off-circuit cage tap-changer for transformer | |
| CN108511223B (en) | Horizontal on-load capacity-regulating voltage-regulating tapping switch | |
| CN113299498A (en) | Contact structure of combined type vacuum on-load tap-changer | |
| CN1933055B (en) | Non-field cage-shape tap changer for transformer | |
| CN101477885A (en) | Non-exciting shunting switch convenient for shifting | |
| CN201956179U (en) | Non-excitation cage-shaped linear voltage-regulation tapping switch | |
| CN2201716Y (en) | Vottage-regulating on-load tapping switch for transformer | |
| CN201298445Y (en) | Non-excitation tapping switch convenient for shifting | |
| CN115602475A (en) | Electrical isolation switch and switch layer thereof | |
| CN113725036A (en) | Outdoor vortex repulsion high-speed pole-mounted circuit breaker | |
| CN201383431Y (en) | Non-excitation tapping switch with contact isolating device | |
| CN2259676Y (en) | Non-excitation bar-type tapping switch | |
| CN113838702B (en) | Switching core of on-load tap-changer and on-load tap-changer | |
| CN209447731U (en) | A kind of bipolar electric isolating switch | |
| CN2176594Y (en) | Arc-extinguishing device for contact of on-load tap-changer | |
| CN2221256Y (en) | non-excitation tap switch | |
| CN2672838Y (en) | High voltage vacuum switch good for frequently switching | |
| CN218038894U (en) | Simple moving contact structure for on-load tap-changer | |
| CN212257268U (en) | Bridge type change-over switch of oil-immersed vacuum on-load tap-changer | |
| JPS60206120A (en) | Load tap selector for on-load tap changing transformer | |
| CN2308152Y (en) | No-excitation tap changer | |
| CN212529662U (en) | Contact seat for electric switch machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221228 Address after: 563000 A1 (office building), Phase I of Relocation and Capacity Expansion Technical Transformation Project, No. 1, Wuhan Road, Huichuan District, Zunyi, Guizhou Patentee after: Guizhou Chenting Power Equipment Manufacturing Co.,Ltd. Address before: No. 561, Linchuan Road, Zunyi District, Guizhou Province Patentee before: GUIZHOU CHANGZHENG ELECTRIC Co.,Ltd. |
|
| TR01 | Transfer of patent right |