CN207021165U - A kind of and supporting polarity reversing switch of load ratio bridging switch - Google Patents
A kind of and supporting polarity reversing switch of load ratio bridging switch Download PDFInfo
- Publication number
- CN207021165U CN207021165U CN201720296439.2U CN201720296439U CN207021165U CN 207021165 U CN207021165 U CN 207021165U CN 201720296439 U CN201720296439 U CN 201720296439U CN 207021165 U CN207021165 U CN 207021165U
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- static contact
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Abstract
The utility model discloses a kind of and supporting polarity reversing switch of load ratio bridging switch, the first static contact, the second static contact, the 3rd static contact, the 4th static contact, the 5th static contact are spacedly distributed along the circumference of insulating supporting disk successively；First moving contact, the second moving contact are sequentially distributed in the circumference along insulation rotating disk；The insulation rotating disk and insulating supporting disk are the same center of circle, and the moving contact to insulate on rotating disk can be in contact by rotating with the first static contact on insulating supporting disk, the second static contact, the 3rd static contact, the 4th static contact, the 5th static contact；Independent polarity reversing switch designed by the utility model has two positions, a corresponding positive polarity, a corresponding negative polarity, adds the operating position number of transformer, pressure regulator, and increase the scope of pressure regulation series；The polarity reversing switch of the utility model design carries out dipole inversion under equipotential, and does not cut off electric current during conversion.
Description
Technical field
The utility model belongs to transformer technology field, is used cooperatively with on-load tap changers of transformers, and more particularly to one
The kind polarity reversing switch supporting with load ratio bridging switch.
Background technology
In below 35KV power transformers and pressure regulator, the oil blast and vacuum extinction load ratio bridging switch that use, greatly
Part is without polarity selector, and the quantity of tap is the tapping gear number of transformer and pressure regulator in shunting switch, by point
Connecing the influence of switch fixed position number causes the operating position number of transformer, pressure regulator to be limited, so as to limit regulation precision.
The content of the invention
For above-mentioned the deficiencies in the prior art, the utility model provides one kind and is applied to oil-filled transformer and tune
Depressor, it is used cooperatively with no polarity selector load ratio bridging switch, independent polarity reversing switch.
A kind of and supporting polarity reversing switch of load ratio bridging switch, including insulation rotating disk, insulating supporting disk, rotating shaft；Institute
It is the same center of circle that insulation rotating disk, which is stated, with insulating supporting disk, and the insulation rotating disk is arranged on the top of insulating supporting disk by rotating shaft,
At least 1 moving contact group is set on the insulation rotating disk, and the moving contact group includes 2 moving contacts, 2 moving contacts point
Wei not the first moving contact and the second moving contact；At least 1 static contact group, 1 static contact group are set on the insulating supporting disk
Including 5 static contacts, 5 static contacts be respectively the first static contact, the second static contact, the 3rd static contact, the 4th static contact,
5th static contact；
The static contact is spacedly distributed along the circumference of insulating supporting disk successively；The moving contact is successively along insulation rotating disk
Circumference is spacedly distributed；
Moving contact on insulation rotating disk can be in contact by rotating with the static contact on insulating supporting disk.
Further, in addition to load ratio bridging switch and winding, the winding includes main winding and tap winding, tap around
Multiple taps are provided with group, the load ratio bridging switch includes the 1st grade of shunting switch, shunting switch maximum and tap
Moving contact.
Further, in addition to load ratio bridging switch and winding, the winding include public winding and tap winding, tap
Multiple taps are provided with winding, the load ratio bridging switch includes the 1st grade of shunting switch, shunting switch maximum and divided
Connect moving contact.
Further, the polarity reversing switch is connected with load ratio bridging switch including positive polarity position and negative polarity position
Put；
During positive polarity position, the first static contact is connected by the first moving contact with the second static contact, first stationary contact
Head is connected with one end of main winding, and second static contact is connected with the 1st grade of the shunting switch of load ratio bridging switch；It is described
3rd static contact is connected by the second moving contact with the 4th static contact, the tap of the 4th static contact and load ratio bridging switch
Moving contact is connected；Electric current passes sequentially through main winding, the first static contact, the first moving contact, the second static contact, tap winding, the
Current channel when four static contacts, the second moving contact, the 3rd static contact formation first position；
During negative polarity position, the 4th static contact is connected by the second moving contact with the 5th static contact, the 4th stationary contact
Head is connected with the tap moving contact of load ratio bridging switch, the 5th static contact and the first static contact short circuit, and the 5th
Static contact is connected with one end of main winding；Second static contact is connected by the first moving contact with the 3rd static contact, and second is quiet
Contact is connected with the 1st grade of the shunting switch of load ratio bridging switch；Electric current passes sequentially through main winding, the first static contact, the 5th quiet
Contact, the second moving contact, the 4th static contact, tap winding, the second static contact, the first moving contact, the 3rd static contact form second
Current channel during position.
Further, the positive polarity position can also be：
First static contact is connected by the first moving contact with the second static contact, the first static contact and load ratio bridging switch
Tap moving contact is connected；3rd static contact is connected by the second moving contact with the 4th static contact, and the 3rd static contact is with there is load
The shunting switch maximum of shunting switch is connected, and the 4th static contact is connected with one end of public winding, described public
Another termination neutral point of winding；Electric current passes sequentially through the second static contact, the first moving contact, the first static contact, tap winding, the
Three static contacts, the second moving contact, the 4th static contact, public winding and Winding tap form current channel during first position；
The negative polarity position can also be：
4th static contact is connected by the second moving contact with the 5th static contact, one end of the 4th static contact and public winding
It is connected, another termination neutral point of the public winding, the 5th static contact and the first static contact short circuit, the first static contact
It is connected with the tap moving contact of load ratio bridging switch；Second static contact is connected by the first moving contact with the 3rd static contact,
The shunting switch maximum of 3rd static contact load ratio bridging switch；Electric current passes sequentially through the second static contact, the first moving contact, the 3rd
Static contact, tap winding, the first static contact, the 5th static contact, the second moving contact, the 4th static contact, public winding and winding go out
Capitiform is into the current channel during second place.
Further, motor drive mechanism and bridge joint small contact are provided with the insulation rotating disk, is set on the insulating supporting disk
It is equipped with position contact.
Further, first moving contact and the second moving contact include two bridge contacts, the bridge contacts respectively
Length can only connect adjacent two static contact；The total length of described two bridge contacts can connect three adjacent static contacts.
Further, it is described insulation rotating disk on be provided with 3 moving contact groups, be provided with the insulating supporting disk 3 it is quiet
Sets of contacts.
Compared with prior art, the utility model has following technique effect：
Independent polarity reversing switch designed by the utility model has two positions, a corresponding positive polarity, a correspondence
Negative polarity, the operating position number for selecting transformer after converter, pressure regulator using the polarity are changed into 2 × (n-1)+1 from original n
Individual (n is load ratio bridging switch operating position number), pressure regulation series is ± 2 × (n-1), adds the work of transformer, pressure regulator
Positional number, and increase the scope of pressure regulation series；The polarity reversing switch of the utility model design carries out pole under equipotential
Property conversion, and change when do not cut off electric current.
Brief description of the drawings
Fig. 1 is the structural representation of polarity reversing switch of the present utility model；
Fig. 2 is the side view of polarity reversing switch of the present utility model；
The electronic allocating slot mechanism structure schematic diagrames of Fig. 3；
The electronic allocating slot mechanism overlooking the structure diagrams of Fig. 4；
Fig. 5 polarity reversing switch positive polarity transformer principle schematic diagrames；
Fig. 6 polarity reversing switch reversed polarity transformer principle schematic diagrames；
Fig. 7 polarity reversing switch positive polarity automatic coupling voltage regulator principle schematics；
Fig. 8 polarity reversing switch reversed polarity automatic coupling voltage regulator principle schematics；
Fig. 9 moving contact group structural representations.
Label is represented as in figure：1-insulation rotating disk；2-insulating supporting disk；3-the first moving contact；4-the second is dynamic tactile
Head；5-the first static contact；6-the second static contact；7-the three static contact；8-the four stationary contact；9-the five static contact；10-bridge
Connect small contact；11-position contact；12-motor drive mechanism；13-slot poking ware；14-AC gear motor；15-installing plate；
16-slotted disk；17-slotted disk positions circular arc；18-load ratio bridging switch；The 1st grade of 19-shunting switch；20-winding；21-point
Connect winding；22-polarity reversing switch；23-shunting switch maximum；24-bridge contacts；25-tap moving contact； 26—
Winding tap；27-main winding；28-public winding.
Embodiment
The utility model is further described with reference to the accompanying drawings and detailed description.
Polarity reversing switch disclosed in the utility model, suitable for oil-filled transformer and pressure regulator, turn with no polarity
Change what the load ratio bridging switch of switch was used cooperatively, independent polarity reversing switch, two positions of the polarity reversing switch, one
Corresponding positive polarity, a corresponding negative polarity, four terminals of the polarity reversing switch, is divided into two groups every group two.This practicality is new
During one position of type, one group of two terminals are in another group of two terminals and correspond conducting state；It is another
During individual position, one group of two terminals exchange corresponding relation with another group of two terminals, should be led in cross-pair one by one
Logical state.
Using the transformer of polarity reversing switch of the present utility model, pressure regulator, load ratio bridging switch may be selected and routinely produce
Product are not required to do any change.Operating position number is 2 × (n-1)+1 (n is load ratio bridging switch operating position number), pressure regulation series
For ± 2 × (n-1).During two position conversions, four terminals are under equipotential.And do not cut off electricity during two position conversions
Stream.
Embodiment 1
A kind of supporting polarity reversing switch of load ratio bridging switch is present embodiments provided, as shown in figure 1, turning including insulation
Disk 1, insulating supporting disk 2, rotating shaft；The insulation rotating disk 1 and insulating supporting disk 2 are the same center of circle, and the insulation rotating disk 1 is by turning
Axle is arranged on the top of insulating supporting disk 2, and at least 1 moving contact group, the moving contact group bag are set on the insulation rotating disk 1
2 moving contacts are included, 2 moving contacts are respectively the first moving contact 3 and the second moving contact 4；Set on the insulating supporting disk 2
Put at least 1 static contact group, the static contact group includes 5 static contacts, 5 static contacts be respectively the first static contact 5,
Second static contact 6, the 3rd static contact 7, the 4th static contact 8, the 5th static contact 9；
First static contact 5, the second static contact 6, the 3rd static contact 7, the 4th static contact 8, the 5th static contact 9 edge successively
The circumference of insulating supporting disk 2 is spacedly distributed；First moving contact 3, the second moving contact 4 are successively along the circumference of insulation rotating disk 1
It is spacedly distributed；
Insulate rotating disk 1 on the first moving contact 3 by axis of rotation can with the first static contact 5 on insulating supporting disk,
Second static contact 6, the 3rd static contact 7 are in contact；The second moving contact 4 to insulate on rotating disk 1 can be with insulation by axis of rotation
The 3rd static contact 7, the 4th static contact 8, the 5th static contact 9 in support plate are in contact.
Motor drive mechanism 12 and bridge joint small contact 10 are provided with the insulation rotating disk 1, is provided with the insulating supporting disk 2
Position contact 11.
Motor drive mechanism 12 drives insulation rotating disk 1 to rotate by rotating shaft, moves insulation rotating disk 1 and drives the first moving contact 3, the
The opposing insulation support plate 2 of two moving contact 4 is swung.Bridge small contact 10 and be arranged on insulation rotating disk 1, position contact 11 is positioned at absolutely
In edge support plate 2, the first moving contact 3 and the second moving contact 4 can be made by bridging the signal of small contact 10 and the feedback of position contact 11
Accurately it is parked in two polar sites.
Embodiment 2
The present embodiment also includes load ratio bridging switch 18 and winding 20 on the basis of embodiment 1, and the winding 20 includes
Main winding 27 and tap winding 21, tap and multiple taps are provided with winding 21, and the load ratio bridging switch 18 includes tap
Switch the 1st grade 19, shunting switch maximum 23 and tap moving contact 25.
As shown in Figure 5 to Figure 6, tapped in the present embodiment on winding 21 and be provided with 9 taps, load ratio bridging switch 18 is set
9 gears are equipped with, are topmost the 1st grade 19 of shunting switch, 9 grades of bottom is shunting switch maximum 23.
Embodiment 3
The present embodiment also includes load ratio bridging switch 18 and winding 20 on the basis of embodiment 1, and the winding 20 includes
Public winding 28 and tap winding 21, tap and multiple taps are provided with winding 21, and the load ratio bridging switch 18 includes dividing
Connect the 1st grade 19 of switch, shunting switch maximum 23 and tap moving contact 25.
Tapped as shown in Fig. 7 to Fig. 8, in the present embodiment on winding 21 and be provided with 9 taps, load ratio bridging switch 18 is set
9 gears are equipped with, are topmost the 1st grade 19 of shunting switch, 9 grades of bottom is shunting switch maximum 23.
Embodiment 4
Present embodiments provide the load ratio bridging switch phase that the polarity reversing switch of the offer of embodiment 1 provides with embodiment 2
Connected mode, including positive polarity position and negative polarity position；
As shown in figure 5, during positive polarity position, the first static contact 5 is connected by the first moving contact 3 with the second static contact 6,
First static contact 5 is connected with one end of main winding 27, and the tap of second static contact 6 and load ratio bridging switch 18 is opened
The 1st grade 19 is closed to be connected；3rd static contact 7 is connected by the second moving contact 4 with the 4th static contact 8, and the described 4th is quiet
Contact 8 is connected with the tap moving contact 25 of load ratio bridging switch 18；The electric current passes sequentially through main winding 27, the first static contact
5th, the first moving contact 3, the second static contact 6, the 1st grade 19 of shunting switch, tap winding 21, tap moving contact 25, the 4th static contact
8th, current channel when the second moving contact 4, the 3rd static contact 7 formation first position；
As shown in fig. 6, during negative polarity position, the 4th static contact 8 is connected by the second moving contact 4 with the 5th static contact 9,
4th static contact 8 is connected with the tap moving contact 25 of load ratio bridging switch 18, the 5th static contact 9 and the first stationary contact
First 5 short circuit, the 5th static contact 9 are connected with one end of main winding 27；Second static contact 6 is quiet by the first moving contact 3 and the 3rd
Contact 7 is connected, and the second static contact 6 is connected for the 1st grade 19 with the shunting switch of load ratio bridging switch 18；The electric current leads to successively
Cross main winding 27, the first static contact 5, the 5th static contact 9, the second moving contact 4, the 4th static contact 8, tap moving contact 25, tap
Electricity when the 1st grade of 19, second static contact 6 of winding 21, shunting switch, the first moving contact 3, the 3rd static contact 7 formation second place
Circulation road.
When the tap moving contact 25 of load ratio bridging switch 18 in Fig. 5, Fig. 6 is run to and the 1st grade of 19 connection of shunting switch
When, tap winding 21 is without electric current by the way that for 0 tap, the first static contact 5, the second static contact 6, the 3rd static contact the 7, the 4th are quiet
Contact 8, the 5th static contact 9 and the first moving contact 3, the second moving contact 4 are under same current potential.Dipole inversion is needed in this state
Lower conversion.
Embodiment 5
Present embodiments provide the another of the load ratio bridging switch that the polarity shift device that embodiment 1 provides provides with embodiment 3
A kind of connected mode.
As shown in fig. 7, the positive polarity position can also be：
First static contact 5 is connected by the first moving contact 3 with the second static contact 6, the first static contact 5 and loaded tap-off
The tap moving contact 25 of switch 18 is connected；3rd static contact 7 is connected by the second moving contact 4 with the 4th static contact 8, and the 3rd
Static contact 7 is connected with the shunting switch maximum 23 of load ratio bridging switch 18, the 4th static contact 8 and public winding 28
One end is connected, another termination neutral point of the public winding 28；It is dynamic that the electric current passes sequentially through the second static contact 6, first
Contact 3, the first static contact 5, tap moving contact 25, tap winding 21, shunting switch maximum 23, the 3rd static contact 7, second are dynamic
Contact 4, the 4th static contact 8, public winding 28 and Winding tap 26 form current channel during first position；
As shown in figure 8, the negative polarity position can also be：
4th static contact 8 is connected by the second moving contact 4 with the 5th static contact 9, the 4th static contact 8 and public winding
28 one end is connected, another termination neutral point of the public winding 28, and the 5th static contact 9 and the first static contact 5 are short
Connect, the first static contact 5 is connected with the tap moving contact 25 of load ratio bridging switch 18；Second static contact 6 passes through the first moving contact 3
It is connected with the 3rd static contact 7, the 3rd static contact 7 is connected with the shunting switch maximum 23 of load ratio bridging switch 18；It is described
Electric current pass sequentially through the second static contact 6, the first moving contact 3, the 3rd static contact 7, shunting switch maximum 23, tap winding 21,
Tap moving contact 25, the first static contact 5, the 5th static contact 9, the second moving contact 4, the 4th static contact 8, public winding 28 and winding
Lift one's head the 26 formation second place when current channel.
Connected when the tap moving contact 25 of load ratio bridging switch 18 in Fig. 7, Fig. 8 is run to shunting switch maximum 23
When, tap winding 21 is without electric current by the way that for 0 tap, the first static contact 5, the second static contact 6, the 3rd static contact the 7, the 4th are quiet
Contact 8, the 5th static contact 9 and the first moving contact 3, the second moving contact 4 are under same current potential.Dipole inversion is needed in this state
Lower conversion.
Embodiment 6
The present embodiment when ensureing moving contact conversion in order to not cut off electric current, as shown in figure 9, first moving contact 3 and the
Two moving contacts 4 include two bridge contacts 24 respectively, and the length of the bridge contacts 24 can only connect adjacent two static contact；It is described
The total length of two bridge contacts 24 can connect three adjacent static contacts.
Embodiment 7
The present embodiment is on the basis of embodiment 1, there is provided the polarity reversing switch of three-phase, it is described insulation rotating disk 1 on set
3 moving contact groups are equipped with, 3 static contact groups are provided with the insulating supporting disk 2.
Claims (8)
1. a kind of and supporting polarity reversing switch of load ratio bridging switch, it is characterised in that including insulation rotating disk (1), insulation branch
Support plate (2), rotating shaft；The insulation rotating disk (1) and insulating supporting disk (2) are the same center of circle, and the insulation rotating disk (1) passes through rotating shaft
The top of insulating supporting disk (2) is arranged on, at least 1 moving contact group, the moving contact group are set on the insulation rotating disk (1)
Including 2 moving contacts, 2 moving contacts are respectively the first moving contact (3) and the second moving contact (4)；The insulating supporting disk
(2) at least 1 static contact group is set on, and 1 static contact group includes 5 static contacts, and 5 static contacts are respectively first quiet
Contact (5), the second static contact (6), the 3rd static contact (7), the 4th static contact (8), the 5th static contact (9)；
The static contact is spacedly distributed along the circumference of insulating supporting disk (2) successively；The moving contact is successively along insulation rotating disk (1)
Circumference be spacedly distributed；
Moving contact on insulation rotating disk (1) can be in contact by rotating with the static contact on insulating supporting disk (2).
2. polarity reversing switch as claimed in claim 1, it is characterised in that also including load ratio bridging switch (18) and winding
(20), the winding (20) includes main winding (27) and tap winding (21), and multiple taps are provided with tap winding (21),
The load ratio bridging switch (18) includes the 1st grade of shunting switch (19), shunting switch maximum (23) and tap moving contact (25).
3. polarity reversing switch as claimed in claim 1, it is characterised in that also including load ratio bridging switch (18) and winding
(20), the winding (20) includes public winding (28) and tap winding (21), and multiple taps are provided with tap winding (21)
Head, the load ratio bridging switch (18) include the 1st grade of shunting switch (19), shunting switch maximum (23) and tap moving contact
(25)。
4. polarity reversing switch as claimed in claim 2, it is characterised in that the polarity reversing switch and load ratio bridging switch phase
Connection includes positive polarity position and negative polarity position；
During positive polarity position, the first static contact (5) is connected by the first moving contact (3) with the second static contact (6), and described first
Static contact (5) is connected with one end of main winding (27), and second static contact (6) and the tap of load ratio bridging switch (18) are opened
The 1st grade (19) are closed to be connected；3rd static contact (7) is connected by the second moving contact (4) with the 4th static contact (8), institute
The 4th static contact (8) is stated with the tap moving contact (25) of load ratio bridging switch (18) to be connected；Electric current passes sequentially through main winding
(27), the first static contact (5), the first moving contact (3), the second static contact (6), tap winding (21), the 4th static contact (8), the
Current channel when two moving contacts (4), the 3rd static contact (7) formation first position；
During negative polarity position, the 4th static contact (8) is connected by the second moving contact (4) with the 5th static contact (9), and the described 4th
Static contact (8) is connected with the tap moving contact (25) of load ratio bridging switch (18), the 5th static contact (9) and the
One static contact (5) short circuit, the 5th static contact (9) are connected with one end of main winding (27)；Second static contact (6) is dynamic by first
Contact (3) is connected with the 3rd static contact (7), the 1st grade of the shunting switch of the second static contact (6) and load ratio bridging switch (18)
(19) it is connected；Electric current pass sequentially through main winding (27), the first static contact (5), the 5th static contact (9), the second moving contact (4),
4th static contact (8), tap winding (21), the second static contact (6), the first moving contact (3), the 3rd static contact (7) form second
Current channel during position.
5. polarity reversing switch as claimed in claim 4, it is characterised in that the positive polarity position can also be：
First static contact (5) is connected by the first moving contact (3) with the second static contact (6), and the first static contact (5) is with there is load point
The tap moving contact (25) for connecing switch (18) is connected；3rd static contact (7) passes through the second moving contact (4) and the 4th static contact
(8) it is connected, the 3rd static contact (7) is connected with the shunting switch maximum (23) of load ratio bridging switch (18), and the described 4th
Static contact (8) is connected with one end of public winding (28), another termination neutral point of the public winding (28)；Electric current is successively
Pass through the second static contact (6), the first moving contact (3), the first static contact (5), tap winding (21), the 3rd static contact (7), second
Moving contact (4), the 4th static contact (8), public winding (28) and Winding tap (26) form current channel during first position；
The negative polarity position can also be：
4th static contact (8) is connected by the second moving contact (4) with the 5th static contact (9), the 4th static contact (8) with it is public around
One end of group (28) is connected, another termination neutral point of the public winding (28), the 5th static contact (9) and first quiet
Contact (5) short circuit, the first static contact (5) are connected with the tap moving contact (25) of load ratio bridging switch (18)；Second static contact
(6) it is connected by the first moving contact (3) with the 3rd static contact (7), the tap of the 3rd static contact (7) load ratio bridging switch (18)
Switch maximum (23)；Electric current passes sequentially through the second static contact (6), the first moving contact (3), the 3rd static contact (7), tap winding
(21), the first static contact (5), the 5th static contact (9), the second moving contact (4), the 4th static contact (8), public winding (28) and around
Group lift one's head (26) formed the second place when current channel.
6. polarity reversing switch as claimed in claim 1, it is characterised in that be provided with motor on the insulation rotating disk (1)
Structure (12) and bridge joint small contact (10), are provided with position contact (11) on the insulating supporting disk (2).
7. polarity reversing switch as claimed in claim 1, it is characterised in that first moving contact (3) and the second moving contact
(4) two bridge contacts (24) are included respectively, the length of the bridge contacts (24) can only connect adjacent two static contact；Described two
The total length of individual bridge contacts (24) can connect three adjacent static contacts.
8. polarity reversing switch as claimed in claim 1, it is characterised in that 3 are provided with insulation rotating disk (1) and dynamic is touched
Head group, is provided with 3 static contact groups on the insulating supporting disk (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720296439.2U CN207021165U (en) | 2017-03-24 | 2017-03-24 | A kind of and supporting polarity reversing switch of load ratio bridging switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720296439.2U CN207021165U (en) | 2017-03-24 | 2017-03-24 | A kind of and supporting polarity reversing switch of load ratio bridging switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207021165U true CN207021165U (en) | 2018-02-16 |
Family
ID=61460330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720296439.2U Withdrawn - After Issue CN207021165U (en) | 2017-03-24 | 2017-03-24 | A kind of and supporting polarity reversing switch of load ratio bridging switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207021165U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106935426A (en) * | 2017-03-24 | 2017-07-07 | 西安森宝电气工程有限公司 | A kind of and supporting polar selecting switch of load ratio bridging switch |
| CN108922803A (en) * | 2018-09-06 | 2018-11-30 | 厦门尤伯电气有限公司 | A kind of phase-change switch structure |
| CN110085460A (en) * | 2019-06-05 | 2019-08-02 | 贵州长征电气有限公司 | A kind of nine grades of off circuit tap changers of drum type positive-negative voltage-regulation |
-
2017
- 2017-03-24 CN CN201720296439.2U patent/CN207021165U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106935426A (en) * | 2017-03-24 | 2017-07-07 | 西安森宝电气工程有限公司 | A kind of and supporting polar selecting switch of load ratio bridging switch |
| CN106935426B (en) * | 2017-03-24 | 2018-09-07 | 西安森宝电气工程有限公司 | A kind of and mating polarity reversing switch of load ratio bridging switch |
| CN108922803A (en) * | 2018-09-06 | 2018-11-30 | 厦门尤伯电气有限公司 | A kind of phase-change switch structure |
| CN108922803B (en) * | 2018-09-06 | 2023-12-08 | 福建尤伯科技有限公司 | Phase change switch structure |
| CN110085460A (en) * | 2019-06-05 | 2019-08-02 | 贵州长征电气有限公司 | A kind of nine grades of off circuit tap changers of drum type positive-negative voltage-regulation |
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