CN106935425A - A kind of and supporting polarity selector of load ratio bridging switch - Google Patents
A kind of and supporting polarity selector of load ratio bridging switch Download PDFInfo
- Publication number
- CN106935425A CN106935425A CN201710183449.XA CN201710183449A CN106935425A CN 106935425 A CN106935425 A CN 106935425A CN 201710183449 A CN201710183449 A CN 201710183449A CN 106935425 A CN106935425 A CN 106935425A
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- static contact
- contact
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- switch
- winding
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H9/0016—Contact arrangements for tap changers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
Abstract
The invention discloses a kind of with the supporting polarity switch of load ratio bridging switch, the first moving contact, the second moving contact, the 3rd moving contact in the vertical direction are successively set on insulated tension pole under upper；First static contact, the second static contact in the vertical direction are successively set on the first insulating support rod from top to bottom；3rd static contact, the 4th static contact, the 5th static contact in the vertical direction are successively set on the second insulating support rod from top to bottom；First insulating support rod and the second insulating support rod are separately positioned on the both sides of insulated tension pole.Independent polarity switch designed by the present invention has two positions, and a correspondence positive polarity, a correspondence negative polarity increased the operating position number of transformer, pressure regulator, and increase the scope of pressure regulation series after selecting converter using the polarity；And polarity switch carries out dipole inversion under equipotential, and does not cut off electric current during conversion.
Description
Technical field
The invention belongs to transformer technology field, used cooperatively with on-load tap changers of transformers, it is more particularly to a kind of with
The supporting polarity switch of load ratio bridging switch.
Background technology
In below 35KV power transformers and pressure regulator, the oil blast and vacuum extinction load ratio bridging switch for using, greatly
Part without polarity selector, 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 present invention provides a kind of suitable for oil-filled transformer and pressure regulation
Device, uses cooperatively with no polarity selector load ratio bridging switch, independent polarity switch.
It is a kind of with the supporting polarity switch of load ratio bridging switch including insulated tension pole, the first insulating support rod, second exhausted
Edge support bar, first insulating support rod and the second insulating support rod are separately positioned on the both sides of insulated tension pole, the insulation
Pull bar can be moved relative to the first insulating support rod, the second insulating support rod in the vertical direction；
The insulated tension pole sets at least 1 moving contact group, and the moving contact group includes 3 moving contacts, and described 3 are moved
Contact is followed successively by the first moving contact, the second moving contact, the 3rd moving contact from top to bottom on the vertical direction of insulated tension pole；It is described
At least 1 the first static contact group is set on the first insulating support rod, and the first static contact group includes 2 static contacts, described 2
Individual static contact is followed successively by the first static contact, the second static contact from top to bottom on the first insulating support rod；The second insulation branch
At least 1 the second static contact group is set on strut, and the second static contact group includes 3 static contacts, and 3 static contacts exist
The 3rd static contact, the 4th static contact, the 5th static contact are followed successively by first insulating support rod from top to bottom；
When insulated tension pole in the vertical direction is moved, moving contact can be moved by insulated tension pole in the vertical direction, and
It is in contact with static contact；
First moving contact, the second moving contact, the width of the 3rd moving contact are more than the first static contact and the second static contact
The distance between, the distance between the 3rd static contact and the 4th static contact, the distance between the 4th static contact and the 5th static contact.
Further, also including 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 that the 1st grade of shunting switch, shunting switch maximum and tap are dynamic
Contact.
Further, also including load ratio bridging switch and winding, the winding includes 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 tap
Moving contact.
Further, the polarity shift device is connected including positive polarity position and negative polarity position with load ratio bridging switch；
During positive polarity position, the first static contact is connected by the second moving contact with the 4th static contact, first stationary contact
Head is connected with the 1st grade of the shunting switch of load ratio bridging switch, and the 4th static contact is connected with one end of main winding；Second
Static contact is connected by the 3rd moving contact with the 5th static contact, the tap moving contact phase of the second static contact and load ratio bridging switch
Connection；The electric current passes sequentially through main winding, the 4th static contact, the second moving contact, the first static contact, tap winding, second quiet
Contact, the 3rd moving contact, the 5th static contact form current channel during first position；
During negative polarity position, the first static contact is connected by the first moving contact with the 3rd static contact, first stationary contact
Head is connected with the 1st grade of the shunting switch of load ratio bridging switch, the 3rd static contact and the 5th static contact short circuit；Second stationary contact
Head is connected by the second moving contact with the 4th static contact, and the second static contact is connected with the tap moving contact of load ratio bridging switch
Connect, the 4th static contact is connected with one end of main winding；The electric current passes sequentially through main winding, the 4th static contact, second dynamic touches
Head, the second static contact, tap winding, the first static contact, the first moving contact, the 3rd static contact, the 5th static contact form second
Current channel when putting.
Further, the positive polarity position can also be：
First static contact is connected by the first moving contact with the 3rd static contact, and the 3rd static contact is short with the 5th static contact
Connect, first static contact is connected with the tap moving contact of load ratio bridging switch；Second static contact by the second moving contact with
4th static contact is connected, and the second static contact is connected with the shunting switch maximum of load ratio bridging switch, the 4th stationary contact
Head is connected with one end of public winding, another termination neutral point of the public winding；It is quiet that the electric current passes sequentially through the 5th
Contact, the 3rd static contact, the first moving contact, the first static contact, tap winding, the second static contact, the second moving contact, the 4th stationary contact
Head, public winding and Winding tap form current channel during first position；
The negative polarity position can also be：
First static contact is connected by the second moving contact with the 4th static contact, one end of the 4th static contact and public winding
It is connected, another termination neutral point of the public winding；The tap moving contact of first static contact and load ratio bridging switch
It is connected；Second static contact is connected by the 3rd moving contact with the 5th static contact, the second static contact and load ratio bridging switch
Shunting switch maximum is connected；The electric current pass sequentially through the 5th static contact, the 3rd moving contact, the second static contact, tap around
Electric current when group, the first static contact, the second moving contact, the 4th static contact, public winding and Winding tap form the second place leads to
Road.
Further, the bottom of the insulated tension pole is provided with motor drive mechanism and position switch, and the insulated tension pole passes through
Motor drive mechanism in the vertical direction is translated, and by position switch control.
Further, the insulated tension pole is provided with 3 moving contact groups, and 3 are provided with first insulating support rod
First static contact group, is provided with 3 the second static contact groups on second insulating support rod.
Compared with prior art, the present invention has following technique effect：
Independent polarity switch designed by the present invention has two positions, and one corresponds to positive polarity, and one corresponds to negative polarity,
(n is to select the operating position number of transformer after converter, pressure regulator to be changed into 2 × (n-1)+1 from original n using the polarity
Load ratio bridging switch operating position number), pressure regulation series is ± 2 × (n-1), increased the operating position number of transformer, pressure regulator,
And increase the scope of pressure regulation series；The polarity switch of present invention design carries out dipole inversion, Er Qiezhuan under equipotential
Electric current is not cut off when changing.
Brief description of the drawings
Polarity selector (phase) structural representation that Fig. 1 is a kind of and load ratio bridging switch is supporting.
Polarity selector (phase) side structure schematic diagram that Fig. 2 is a kind of and load ratio bridging switch is supporting.
Fig. 3 motor drive mechanism structural representations.
Fig. 4 motor drive mechanism internal structure schematic diagrams.
Fig. 5 polarity selector positive polarity transformer principle schematic diagrames.
Fig. 6 polarity selector reversed polarity transformer principle schematic diagrames.
Fig. 7 polarity selector positive polarity automatic coupling voltage regulator principle schematics.
Fig. 8 polarity selector reversed polarity automatic coupling voltage regulator principle schematics.
Label is represented as in figure：1-insulated tension pole；2-the first insulating support rod；3-the first moving contact；4-the second moves
Contact；5-the three moving contact；6-the first static contact；7-the second static contact；8-the three static contact；9-the four stationary contact；10—
5th static contact；11-busbar；12-motor drive mechanism；13-position switch；14-AC gear motor；15-tooth bar；
16-gear；17-polarity switch；18-load ratio bridging switch；The 1st grade of 19-shunting switch；20-winding；21-tap
Winding；22-the second insulating support rod；23-shunting switch maximum；24-Winding tap；25-tap moving contact；26-main
Winding；27-public winding.
Specific embodiment
The present invention is described in more detail with reference to the accompanying drawings and detailed description.
Polarity switch disclosed by the invention, it is adaptable to oil-filled transformer and pressure regulator, has with no polarity selector
What on-load shunting switch was used cooperatively, independent polarity switch, two positions of the polarity switch, a correspondence positive polarity, one
Individual correspondence negative polarity, positional information is given by position switch.Conversion between two positions is completed by motor drive mechanism.The dipole inversion
Four terminals of device, are divided into two groups every group two.During a position of the invention, one group of two terminals and the two of another group
Individual terminals are in and correspond conducting state；During another position, one group of two terminals and another group of two wiring
End exchanges corresponding relation, and conducting state is answered in cross-pair one by one.
Using the transformer of the polarity selector, pressure regulator, load ratio bridging switch conventional products may be selected and is not required to do any
Change.Operating position number is 2 × (n-1)+1 (n is load ratio bridging switch operating position number), and pressure regulation series is ± 2 × (n-
1).When two positions are changed, four terminals are under equipotential.And do not cut off electric current during two positions conversions.
Embodiment 1
As shown in figure 1, a kind of and supporting polarity switch of load ratio bridging switch is present embodiments provided, including including exhausted
Edge pull bar 1, the first insulating support rod 2, the second insulating support rod 22, the insulating support rod of first insulating support rod 2 and second
22 both sides for being separately positioned on insulated tension pole 1, the insulated tension pole 1 can be with respect to the first insulating support rod 2, the second insulating support rod
22 in the vertical directions are moved；
The insulated tension pole 1 sets at least 1 moving contact group, and the moving contact group includes 3 moving contacts, described 3
Moving contact is followed successively by the first moving contact 3, the second moving contact 4, the 3rd moving contact from top to bottom on the vertical direction of insulated tension pole 1
5；At least 1 the first static contact group is set on first insulating support rod 2, and the first static contact group includes 2 stationary contacts
Head, 2 static contacts are followed successively by the first static contact 6, the second static contact 7 from top to bottom on the first insulating support rod 2；It is described
At least 1 the second static contact group is set on the second insulating support rod 22, and the second static contact group includes 3 static contacts, institute
State 3 static contacts and be followed successively by the 3rd static contact 8, the 4th static contact 9, the 5th stationary contact from top to bottom on the first insulating support rod 2
First 10；
When the in the vertical direction of insulated tension pole 1 is moved, moving contact can be moved by the in the vertical direction of insulated tension pole 1,
And be in contact with static contact；
First moving contact 3, the second moving contact 4, the 3rd moving contact 5 width more than the first static contact 6 and second it is quiet
The distance between the distance between contact 7, the 3rd static contact 8 and the 4th static contact 9, the 4th static contact 9 and the 5th static contact 10
The distance between.
The bottom of the insulated tension pole 1 is provided with motor drive mechanism 12 and position switch 13, and the insulated tension pole 1 is by electronic
The in the vertical direction translation of mechanism 12, and controlled by position switch 13, the signal of the feedback of position switch 13 can make moving contact essence
True is parked in two design attitudes.
The terminals with external cabling are respectively equipped with the static contact 7 of first static contact 6 and second；
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 26 and tap winding 21, are provided with multiple taps on tap winding 21, 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 Fig. 5 to Fig. 8, winding is tapped in the present embodiment
9 taps are provided with 21, load ratio bridging switch 18 is provided with 9 gears, are topmost the 1st grade 19 of shunting switch, most under
9 grades of end 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 27 and tap winding 21, are provided with multiple taps on tap winding 21, 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. 5 to Fig. 8, in the present embodiment around
9 taps are provided with group 21, load ratio bridging switch 18 is provided with 9 gears, are topmost the 1st grade 19 of shunting switch, most
9 grades of lower end is shunting switch maximum 23.
Embodiment 4
The load ratio bridging switch that is there is provided with embodiment 2 of polarity switch for present embodiments providing the offer of embodiment 1 is connected
Connect mode, including positive polarity position and negative polarity position；
When being illustrated in figure 5 positive polarity position, the first static contact 6 is connected by the second moving contact 4 with the 4th static contact 9
It is logical, the 1st grade 19 of the shunting switch of first static contact 6 and load ratio bridging switch 18, the 4th static contact 9 and main winding 26
One end be connected；Second static contact 7 is connected by the 3rd moving contact 5 with the 5th static contact 10, the second static contact 7 with have load
The tap moving contact 25 of shunting switch 18 is connected；It is dynamic tactile that the electric current passes sequentially through main winding 26, the 4th static contact 9, second
First 4, first the 1st grade 19 of static contact 6, shunting switch, tap winding 21, tap moving contact 25, the second static contact the 7, the 3rd are dynamic tactile
First 5, the current channel during formation of the 5th static contact 10 first position；
When being illustrated in figure 6 negative polarity position, the first static contact 6 is connected by the first moving contact 3 with the 3rd static contact 8
Logical, first static contact 6 is connected for the 1st grade 19 with the shunting switch of load ratio bridging switch 18, the 3rd static contact 8 and the
The short circuit of five static contact 9；Second static contact 7 is connected by the second moving contact 4 with the 4th static contact 9, the second static contact 7 with have load
The tap moving contact 25 of shunting switch 18 is connected, and the 4th static contact 9 is connected with one end of main winding 26；The electric current is successively
By main winding 26, the 4th static contact 9, the second moving contact 4, the second static contact 7, tap moving contact 25, tap winding 21, tap
Switch the 1st grade of 19, first static contact 6, the first moving contact 3, the 3rd static contact 8, the 5th static contact 10 formed the second place when
Current channel.
In the present embodiment, the 3rd static contact 8 and the 5th static contact 9 pass through the short circuit of busbar 11.
When the tap moving contact 25 of load ratio bridging switch 18 in Fig. 5, Fig. 6 runs to be connected for the 1st grade 19 with shunting switch,
The tap no electric current of winding 21 passes through, and is 0 tap, the first static contact 6, the second static contact 7, the 3rd static contact 8, the 4th static contact
9 and the 5th static contact 10 under same current potential.Dipole inversion needs to change in this case.
Embodiment 5
The polarity shift device for present embodiments providing the offer of embodiment 1 is another with the load ratio bridging switch that embodiment 3 is provided
A kind of connected mode.
As shown in fig. 7, the positive polarity position can also be：
First static contact 6 is connected by the first moving contact 3 with the 3rd static contact 8, the 3rd static contact 8 and the 5th static contact
10 short circuits, first static contact 6 is connected with the tap moving contact 25 of load ratio bridging switch 18；Second static contact 7 is by the
Two moving contacts 4 are connected with the 4th static contact 9, the phase of shunting switch maximum 23 of the second static contact 7 and load ratio bridging switch 18
Connection, the 4th static contact 9 is connected with one end of public winding 27, another termination neutral point of the public winding 27；
The electric current passes sequentially through the 5th static contact 10, the 3rd static contact 8, the first moving contact 3, the first static contact 6, tap moving contact
When 25th, the second static contact 7, the second moving contact 4, the 4th static contact 9, public winding 27 and Winding tap 24 form first position
Current channel；
In the present embodiment, the 3rd static contact 8 and the 5th static contact 10 pass through the short circuit of busbar 11.
As shown in figure 8, the positive-negative polarity position can also be：
First static contact 6 is connected by the second moving contact 4 with the 4th static contact 9, the 4th static contact 9 and public winding 27
One end be connected, another termination neutral point of the public winding 27；First static contact 6 and load ratio bridging switch 18
Tap moving contact 25 is connected；Second static contact 7 is connected by the 3rd moving contact 5 with the 5th static contact 10, the second static contact 7
It is connected with the shunting switch maximum 23 of load ratio bridging switch 18；The electric current passes sequentially through the 5th static contact the 10, the 3rd and moves
Contact 5, the second static contact 7, tap moving contact 25, the 1st grade of 19, first static contact 6, second of tap winding 21, shunting switch are moved
Contact 4, the 4th static contact 9, public winding 27 and Winding tap 24 form the current channel during second place.
Connected with shunting switch maximum 23 when the tap moving contact 25 of load ratio bridging switch 18 in Fig. 7, Fig. 8 runs to
When, the tap no electric current of winding 21 passes through, and is 0 tap, and the first static contact 6, the second static contact 7, the 3rd static contact the 8, the 4th are quiet
The static contact 10 of contact 9 and the 5th is under same current potential.Dipole inversion needs to change in this case.
Embodiment 6
The present embodiment is on the basis of embodiment 1, there is provided the polarity switch of three-phase, the insulated tension pole 1 is provided with 3
Individual moving contact group, is provided with 3 the first static contact groups, on second insulating support rod 22 on first insulating support rod 2
It is provided with 3 the second static contact groups.
Claims (7)
1. a kind of and supporting polarity switch of load ratio bridging switch, it is characterised in that including insulated tension pole (1), the first insulation
Support bar (2), the second insulating support rod (22), first insulating support rod (2) and the second insulating support rod (22) set respectively
The both sides in insulated tension pole (1) are put, the insulated tension pole (1) can be with respect to the first insulating support rod (2), the second insulating support rod
(22) in the vertical direction movement；
The insulated tension pole (1) sets at least 1 moving contact group, and the moving contact group includes 3 moving contacts, and described 3 are moved
Contact be followed successively by from top to bottom on the vertical direction of insulated tension pole (1) the first moving contact (3), the second moving contact (4), the 3rd move
Contact (5)；At least 1 the first static contact group is set on first insulating support rod (2), and the first static contact group includes
2 static contacts, 2 static contacts are followed successively by the first static contact (6), second from top to bottom on the first insulating support rod (2)
Static contact (7)；At least 1 the second static contact group, the second static contact group are set on second insulating support rod (22)
Including 3 static contacts, 3 static contacts be followed successively by from top to bottom on the first insulating support rod (2) the 3rd static contact (8),
4th static contact (9), the 5th static contact (10)；
When insulated tension pole (1) in the vertical direction is moved, moving contact can be moved by insulated tension pole (1) in the vertical direction,
And be in contact with static contact；
First moving contact (3), the second moving contact (4), the width of the 3rd moving contact (5) are more than the first static contact (6) and the
The distance between the distance between two static contacts (7), the 3rd static contact (8) and the 4th static contact (9), the 4th static contact (9) and
The distance between 5th static contact (10).
2. polarity 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 (26) 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 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 (27) and tap winding (21), and multiple taps are provided with tap winding (21)
Head, the load ratio bridging switch (18) includes the 1st grade of shunting switch (19), shunting switch maximum (23) and tap moving contact
(25)。
4. polarity switch as claimed in claim 2, it is characterised in that the polarity shift device is connected with load ratio bridging switch
Including positive polarity position and negative polarity position；
During positive polarity position, the first static contact (6) is connected by the second moving contact (4) with the 4th static contact (9), and described first
Static contact (6) is connected with the 1st grade of the shunting switch (19) of load ratio bridging switch (18), the 4th static contact (9) with it is main around
One end of group (26) is connected；Second static contact (7) is connected by the 3rd moving contact (5) with the 5th static contact (10), and second
Static contact (7) is connected with the tap moving contact (25) of load ratio bridging switch (18)；The electric current pass sequentially through main winding (26),
4th static contact (9), the second moving contact (4), the first static contact (6), tap winding (21), the second static contact (7), the 3rd move and touch
Head (5), the 5th static contact (10) form current channel during first position；
During negative polarity position, the first static contact (6) is connected by the first moving contact (3) with the 3rd static contact (8), and described first
Static contact (6) is connected with the 1st grade of the shunting switch (19) of load ratio bridging switch (18), the 3rd static contact (8) and the 5th
Static contact short circuit；Second static contact (7) is connected by the second moving contact (4) with the 4th static contact (9), the second static contact (7)
It is connected with the tap moving contact (25) of load ratio bridging switch (18), the 4th static contact (9) is connected with one end of main winding (26)
Connect；The electric current passes sequentially through main winding (26), the 4th static contact (9), the second moving contact (4), the second static contact (7), tap
Winding (21), the first static contact (6), the first moving contact (3), the 3rd static contact (8), the 5th static contact (10) form the second place
When current channel.
5. polarity switch as claimed in claim 3, it is characterised in that the positive polarity position can also be：
First static contact (6) is connected by the first moving contact (3) with the 3rd static contact (8), and the 3rd static contact (8) is quiet with the 5th
Contact (10) short circuit, first static contact (6) is connected with the tap moving contact (25) of load ratio bridging switch (18)；Second is quiet
Contact (7) is connected by the second moving contact (4) with the 4th static contact (9), the second static contact (7) and load ratio bridging switch (18)
Shunting switch maximum (23) be connected, the 4th static contact (9) is connected with one end of public winding (27), the public affairs
Another termination neutral point of common winding (27)；The electric current passes sequentially through the 5th static contact (10), the 3rd static contact (8), first
Moving contact (3), the first static contact (6), tap winding (21), the second static contact (7), the second moving contact (4), the 4th static contact
(9) current channel when, public winding (27) and Winding tap (24) form first position；
The negative polarity position can also be：
First static contact (6) is connected by the second moving contact (4) with the 4th static contact (9), the 4th static contact (9) with it is public around
One end of group (27) is connected, another termination neutral point of the public winding (27)；First static contact (6) is divided with there is load
The tap moving contact (25) for connecing switch (18) is connected；Second static contact (7) is by the 3rd moving contact (5) and the 5th static contact
(10) it is connected, the second static contact (7) is connected with the shunting switch maximum (23) of load ratio bridging switch (18)；The electric current
Pass sequentially through the 5th static contact (10), the 3rd moving contact (5), the second static contact (7), tap winding (21), the first static contact
(6), electricity when the second moving contact (4), the 4th static contact (9), public winding (27) and Winding tap (24) the formation second place
Circulation road.
6. polarity switch as claimed in claim 1, it is characterised in that the bottom of the insulated tension pole (1) is provided with electronic
Mechanism (12) and position switch (13), the insulated tension pole (1) are translated by motor drive mechanism (12) in the vertical direction, and by position
Put switch (13) control.
7. polarity switch as claimed in claim 1, it is characterised in that the insulated tension pole (1) is provided with 3 moving contacts
Group, is provided with 3 the first static contact groups on first insulating support rod (2), set on second insulating support rod (22)
There are 3 the second static contact groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710183449.XA CN106935425B (en) | 2017-03-24 | 2017-03-24 | A kind of and mating polarity switch of load ratio bridging switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710183449.XA CN106935425B (en) | 2017-03-24 | 2017-03-24 | A kind of and mating polarity switch of load ratio bridging switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106935425A true CN106935425A (en) | 2017-07-07 |
| CN106935425B CN106935425B (en) | 2018-09-07 |
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| CN201710183449.XA Active CN106935425B (en) | 2017-03-24 | 2017-03-24 | A kind of and mating polarity switch of load ratio bridging switch |
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| EP0035637B1 (en) * | 1980-03-08 | 1984-03-14 | Maschinenfabrik Reinhausen Gmbh | Tap changer with potential switch for tapped transformers |
| JPS58222506A (en) * | 1982-06-18 | 1983-12-24 | Hitachi Ltd | On-load tap changer |
| EP0546283A2 (en) * | 1991-12-13 | 1993-06-16 | Maschinenfabrik Reinhausen Gmbh | Polarity switch for tap selector |
| CN102623201A (en) * | 2011-01-30 | 2012-08-01 | 上海华明电力设备制造有限公司 | Composite vacuum on-load tap-changer with external selector |
| CN202258841U (en) * | 2011-09-30 | 2012-05-30 | 上海华明电力设备集团有限公司 | Vertically-arranged integrated bipolar converter |
| DE102013110656A1 (en) * | 2013-09-26 | 2015-03-26 | Maschinenfabrik Reinhausen Gmbh | step switch |
| CN203690127U (en) * | 2013-12-30 | 2014-07-02 | 辽宁金立电力电器有限公司 | On-load capacitance-adjustment switch contact assembly |
| CN204144067U (en) * | 2014-07-10 | 2015-02-04 | Abb技术有限公司 | Dipole inversion selector |
| CN206877857U (en) * | 2017-03-24 | 2018-01-12 | 西安森宝电气工程有限公司 | A kind of and supporting polarity switch of load ratio bridging switch |
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| CN106935425B (en) | 2018-09-07 |
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