CN108987146A - A kind of three-phase off circuit tap changer and the transformer using the tap switch - Google Patents
A kind of three-phase off circuit tap changer and the transformer using the tap switch Download PDFInfo
- Publication number
- CN108987146A CN108987146A CN201810867000.XA CN201810867000A CN108987146A CN 108987146 A CN108987146 A CN 108987146A CN 201810867000 A CN201810867000 A CN 201810867000A CN 108987146 A CN108987146 A CN 108987146A
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- Prior art keywords
- phase
- insulating bar
- static contact
- tap changer
- fixed
- 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.)
- Granted
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- 230000003068 static effect Effects 0.000 claims abstract description 77
- 239000007787 solid Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 description 6
- 238000009413 insulation Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010057855 Hypotelorism of orbit Diseases 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
-
- 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
-
- 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
- H01H9/0027—Operating mechanisms
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Push-Button Switches (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The present invention relates to the transformers of a kind of three-phase off circuit tap changer and the application tap switch.Transformer includes transformer body and the tap switch that is arranged on transformer body, tap switch includes fixed frame, the fixation insulating bar of parallel interval arrangement there are three being arranged on the fixed frame, static contact group is provided on each fixed insulating bar, each static contact group includes the spaced apart multiple static contacts of extending direction along corresponding fixed insulating bar, also guiding slidable fit has moving contact component on each fixed insulating bar, each moving contact component is each attached on same a connection piece, it is additionally provided on the connector mobile with by the drawing handle on each moving contact component synchronism switching to the static contact of respective notch for drive connection part.By the way that each static contact group to be arranged on different fixation insulating bars, avoids each static contact group and be arranged the case where leading to fixed insulating bar strength reduction by the way of line style, extend the service life of tap switch.
Description
Technical field
The present invention relates to the transformers of a kind of three-phase off circuit tap changer and the application tap switch.
Background technique
Transformer is mainly used for the voltage in network system everywhere being adjusted to volume as a kind of important electrical equipment
Constant voltage.Since the voltage in network system everywhere is not exactly the same, in order to enable transformer can be to voltage everywhere
It is adjusted, tap switch is usually mounted on transformer.It is provided with multiple static contacts on tap switch and can freely move
The tap of dynamic moving contact, each static contact the number of turns coils different from connection respectively is attached, when needing to be adjusted to voltage
When, by sliding moving contact and switch it to the static contact of respective notch.
Tap switch in the prior art can be divided into disc type tap switch according to the difference of switching mode and bar shaped taps
Switch, wherein the static contact of strip-shape tap switch is arranged on fixed insulating bar, and each static contact is along fixed insulating bar
Extending direction arranged for interval, moving contact is slidedly assemblied on fixed insulating bar, when needing to be adjusted voltage, passes through sliding
Moving contact is simultaneously switched it to the static contact of respective notch.Such as the China that Authorization Notice No. is CN205723180U is practical
New patent discloses a kind of no excitation bar-type tapping switch, which includes fixed insulating bar and can insulate along fixed
The rack gear of bar sliding is fixed on insulating bar and is provided with static contact, is provided with moving contact on rack gear.Due to point in the patent document
Connecing switch is threephase switch, fixes on insulating bar and is arranged at intervals with three groups of static contact groups, including between six in each static contact group
Every the static contact of setting, and there are three moving contacts, each moving contact to correspond be mounted on corresponding stationary contact respectively for setting on rack gear
In head group, when needing to adjust voltage, being slided by drive rack, rack gear will drive each moving contact thereon and be slided, from
And each moving contact is switched over respectively with the static contact in corresponding static contact group.
Since the static contact of current bar switch mostly uses the arrangement of above-mentioned line style, this makes fixed insulating bar
Length is longer, and the longer reduction that certainly will lead to structural strength of figure, reduces the service life of strip-shape tap switch.In addition, being
The situation for avoiding strip-shape tap switch too long, the spacing of each static contact group is generally relatively close in strip-shape tap switch, this will cause
It is easy to happen electric breakdown phenomena between adjacent static contact group during gear switch, causes the electrical protection of strip-shape tap switch
Grade is lower, is unfavorable for safety work.
Summary of the invention
The purpose of the present invention is to provide a kind of three-phase off circuit tap changers, tap for solving bar shaped in the prior art
The static contact of switch leads to the intensity and the lower technology of electrical protection of fixed insulating bar due to the arrangement using line style
Problem.The object of the invention is also to provide a kind of transformers using above-mentioned three-phase off circuit tap changer.
To achieve the above object, three-phase off circuit tap changer of the invention adopts the following technical scheme that:
Three-phase off circuit tap changer includes fixed frame, and the fixed insulation there are three parallel interval arrangement is arranged on the fixed frame
Bar is provided with static contact group on each fixed insulating bar, and each static contact group includes along corresponding fixed insulating bar extension side
To spaced apart multiple static contacts, also guiding slidable fit has moving contact component, each moving contact group on each fixed insulating bar
Part is each attached on same a connection piece, is additionally provided on the connector mobile with by each moving contact component for drive connection part
Drawing handle on synchronism switching to the static contact of respective notch.
The utility model has the advantages that avoiding by the way that each static contact group to be arranged on different fixation insulating bars and being provided separately within one
Lead to the fixed longer situation of insulating bar on the fixed insulating bar of root, enhances the knot of three-phase off circuit tap changer to a certain extent
Structure intensity extends the service life of three-phase off circuit tap changer.In addition, by the way that different consolidate is arranged in each static contact group
Determine on insulating bar, increases the distance between each static contact group to a certain degree, improve the electrical of three-phase off circuit tap changer
Protective performance.
Further, each static contact in each static contact group in same gear is collinearly arranged.
Further, each static contact insulate in column, along perpendicular to fixed along the corresponding extending direction for fixing insulating bar
The direction of bar is arranged in line.
Further, the push-and-pull of the drawing handle is oriented parallel to the extending direction of the fixed insulating bar.
Further, it is additionally provided on the drawing handle after the moving contact component is adjusted to corresponding gear for inciting somebody to action
The locking structure of drawing handle locking.
Further, the locking structure include be arranged on drawing handle and with each gear multiple lockings correspondingly
Hole and be inserted into the locking hole be used for and set the mutual block in surface lock pin.
Further, the side of the fixed frame is additionally provided with operation panel, is provided with described in confession on the operation panel
The operating panel surface of the through-hole that drawing handle is pierced by, the through-hole circumferential direction constitutes the setting surface.
Further, the connector is connecting plate, and the connecting plate is vertically arranged with each fixed insulating bar.
Transformer of the invention adopts the following technical scheme that:
Transformer includes transformer body and the three-phase off circuit tap changer being arranged on the transformer body, and described three
Phase off circuit tap changer includes fixed frame, and there are three the fixation insulating bars of parallel interval arrangement for setting on the fixed frame, respectively
It is provided with static contact group on fixed insulating bar, each static contact group includes along corresponding fixed insulating bar extending direction interval
Multiple static contacts of arrangement, also guiding slidable fit has moving contact component on each fixed insulating bar, and each moving contact component is solid
It is scheduled on same a connection piece, is additionally provided on the connector and is cut for drive connection part movement with synchronizing each moving contact component
Shift to the drawing handle on the static contact of respective notch.
The utility model has the advantages that avoiding each static contact by the way that each static contact group to be separately positioned on different fixation insulating bars
Group is arranged the case where leading to fixed insulating bar strength reduction by the way of line style, extends three-phase off circuit tap changer
Service life, the operation and maintenance cost of transformer are reduced, furthermore by the way that different fixations is arranged in each static contact group
On insulating bar, the distance between each fixed insulating bar can be adjusted along the short transverse of transformer, same fixed insulation
The distance between each static contact on bar can be adjusted along the width direction of transformer, avoid each static contact using line
The mode of type arrangement can only be adjusted so that the case where adjusting pitch-limited along same direction, and then avoids adjacent stationary contact
Hypotelorism is easy the case where interfering with each other between head group, improves the electrical protection grade of three-phase off circuit tap changer.
Further, each static contact in each static contact group in same gear is collinearly arranged.So that the arrangement of static contact
It is more regular, save corresponding arrangement space.
Further, each static contact insulate in column, along perpendicular to fixed along the corresponding extending direction for fixing insulating bar
The direction of bar is arranged in line.So that the distribution of static contact is more uniform, be conducive to the stabilization of structure, it is quiet to be also beneficial to same gear
The synchronism switching of contact.
Further, the push-and-pull of the drawing handle is oriented parallel to the extending direction of the fixed insulating bar.So that pushing away
It shakes hands that there is overlay segment between handle and fixed insulating bar, saves the arrangement space of drawing handle.
Further, it is additionally provided on the drawing handle after the moving contact component is adjusted to corresponding gear for inciting somebody to action
The locking structure of drawing handle locking.Locking structure drawing handle can be fixed after gear switch, avoid and accidentally grasp
Work etc. causes the case where gear switch easily.
Further, the locking structure include be arranged on drawing handle and with each gear multiple lockings correspondingly
Hole and be inserted into the locking hole be used for and set the mutual block in surface lock pin.Locking hole and locking latch structure letter
It is single, facilitate arrangement and easily operated.
Further, the side of the fixed frame is additionally provided with operation panel, is provided with described in confession on the operation panel
The operating panel surface of the through-hole that drawing handle is pierced by, the through-hole circumferential direction constitutes the setting surface.Operation panel can rise
To the effect of protection three-phase off circuit tap changer internal structure.
Further, the connector is connecting plate, and the connecting plate is vertically arranged with each fixed insulating bar.So that connection
The size of plate is most short, is conducive to the miniaturization and lightweight of three-phase off circuit tap changer manufacture.
Further, the tap for installing the three-phase off circuit tap changer is additionally provided on the transformer body
Switch installs case.The setting of tap switch installs case can be played the role of protecting three-phase off circuit tap changer.
Detailed description of the invention
Fig. 1 is the three-phase off circuit tap changer overall structure main view of the embodiment 1 of transformer of the invention；
Fig. 2 is the right view of the three-phase off circuit tap changer of the embodiment 1 of transformer of the invention；
Fig. 3 is the overall structure diagram of the embodiment 1 of transformer of the invention；
Fig. 4 is the right view of the embodiment 1 of transformer of the invention；
In figure: 1- fixed frame, 2- static contact, 3- moving contact component, 4- connecting plate, the fixed insulating bar of 5-, 6- operation panel, 7- are pushed away
Knob handle, 8- lock pin, 9- transformer body, 10- wire casing, 11- tap switch installs case, 12- tap.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
The specific embodiment 1 of transformer of the invention:
As shown in Fig. 1 ~ 4, transformer includes transformer body 9, and there are three winding assembly, winding groups for setting in transformer body 9
Part includes internally positioned iron core and the coil that is wrapped on the outside of iron core.It is respectively corresponded on each winding assembly and is provided with multiple pumpings
First 12, each tap 12 is attached from the coil of different the number of turns in respective winding assembly respectively, in this way by switching different pumpings
First 12 can be realized the adjusting to different voltages.Different voltage is adjusted to voltage rating for convenience, on transformer body 9
It is additionally provided with three-phase off circuit tap changer (hereinafter referred to as tap switch), tap switch includes static contact group and moving contact component
3, since transformer includes three winding assemblies in the present embodiment, it is also equipped on tap switch and three winding assemblies one is a pair of
The three static contact groups answered include multiple static contacts 2 in each static contact group, wherein static contact 2 respectively with the pumping of corresponding chamber
First 12 are attached, and the line between each static contact group and respective taps 12 is assemblied in wire casing 10, are arranged in the present embodiment
There are three wire casings 10.In order to avoid non-engineers and technicians contact tap switch, it is additionally provided with protection on transformer body 9 and has made
Tap switch is directly mounted in tap switch installs case 11 by tap switch installs case 11, when installation.Work as progress
When voltage rating is adjusted, the adjustment of voltage can be realized by the way that moving contact component 3 is switched to corresponding static contact 2.
Tap switch in the present embodiment specifically uses following structure, and tap switch includes fixed frame 1, and fixed frame 1 is
Box shape, parallel interval installation is provided with one group of stationary contact on each fixed insulating bar 5 there are three fixed insulating bar 5 on fixed frame 1
Head group includes six static contacts 2 in each static contact group, and each static contact 2 in each static contact group is each along corresponding fixed insulation
The extending direction of bar 5 is equidistantly spaced from, and the static contact in the present embodiment in each static contact group prolongs along corresponding fixed insulating bar
It stretches direction to be arranged in line in column, along the direction perpendicular to fixed insulating bar, static contact has six rows three column in the present embodiment.It is each solid
Determine also to be oriented on insulating bar 5 and a moving contact component 3 is installed, each moving contact component 3 can be along corresponding fixed insulation
The guiding sliding of bar 5, in order to realize the synchronous driving to each moving contact component 3, each moving contact component 3 is fixed on together in the present embodiment
On one connector, connector is connecting plate 4 in the present embodiment, and drawing handle 7, this implementation are fixedly connected on connecting plate 4
The push-and-pull direction of drawing handle 7 is parallel with the extending direction of each fixed insulating bar 5 in example.When moving contact component 3 is in drawing handle 7
Driving effect under switch to corresponding static contact 2 after, in order to avoid the reasons such as maloperation cause drawing handle 7 easily to slide
The case where, be additionally provided on drawing handle 7 for after drawing handle 7 is mobile by the locking structure that drawing handle 7 is fixed,
Locking structure is locking hole and the lock pin 8 being inserted into locking hole in the present embodiment.Wherein locking hole setting is in push-and-pull hand
On handle 7, by tap switch in this present embodiment altogether there are five gear, there are five the locking hole on drawing handle 7 is also correspondingly arranged,
Five locking holes are arranged along the extending direction interval of drawing handle 7, and the distance between each locking hole is according to 3 grades of moving contact component
The distance of position switching is determined, and the distance of gear switch is moving contact component 3 in the process for switching to corresponding static contact 2
Middle slid distance.After lock pin 8 is installed in corresponding locking hole, lock pin 8 can be mutual with corresponding setting surface
Block, to realize the purpose that limitation drawing handle 7 slides.Operation panel 6 is additionally provided in the present embodiment on fixed frame 1, is grasped
Make to be provided with the through-hole passed through for drawing handle 7 on panel 6, the operation panel outer surface of through-hole side constitutes and sets in the present embodiment
Determine surface.
It should be noted that moving contact component 3 is conventional structure in the prior art, moving contact component 3 in the present embodiment
Including two movable contact springs that are on its interior and being oppositely arranged, it is provided with spring on the outside of two movable contact springs, when moving contact group
When part switches to corresponding static contact 2, two movable contact springs can clamp static contact 2 therebetween, to realize moving contact
The switching of component 3 and corresponding static contact 2, spring can to corresponding movable contact spring apply active force, thus ensure that movable contact spring with it is quiet
The good contact of contact 2.In addition, the extending direction of the extending direction of connecting plate 4 and each fixed insulating bar 5 hangs down in the present embodiment
Straight setting, so that the length of connecting plate 4 is most short, is conducive to the Miniaturization Design of tap switch.
Voltage of different sizes when in use, can be adjusted to by the transformer of the present embodiment by pushing and pulling drawing handle 7
Voltage rating, drawing handle 7 will drive the movement of the moving contact component 3 on each fixed insulating bar 5 during push-and-pull and will move
Contact assembly 3 switches to different static contacts 2, after switching, by penetrating locking in the locking hole on drawing handle 7
Pin 8, lock pin 8 expose locking hole part can with the mutual block of operation panel 6, to limit drawing handle 7 towards stationary contact
First 2 sliding.
In other embodiments: the number of each fixed insulating bar upper static contact can be adjusted according to the actual situation.
In other embodiments: connecting plate can be obliquely installed with each fixed insulating bar.
In other embodiments: connector can be the other shapes such as curved bar, V-type bar, correspondingly, when connector is curved bar
When, each static contact of same gear is also arranged using the curve to match with curved bar shape；When connector is V-type bar,
Each static contact of same gear is also arranged using the V-type to match with V-type rod-shape.
The embodiment of three-phase off circuit tap changer of the invention: the specific structure of three-phase off circuit tap changer with it is above-mentioned
The specific structure of three-phase off circuit tap changer is identical in transformer, and details are not described herein again.
Claims (10)
1. three-phase off circuit tap changer, it is characterised in that: including fixed frame, there are three parallel intervals for setting on the fixed frame
The fixation insulating bar of arrangement is provided with static contact group on each fixed insulating bar, and each static contact group includes along corresponding solid
Determine the spaced apart multiple static contacts of extending direction of insulating bar, also guiding slidable fit has moving contact on each fixed insulating bar
Component, each moving contact component are each attached on same a connection piece, are additionally provided on the connector mobile for drive connection part
With by the drawing handle on each moving contact component synchronism switching to the static contact of respective notch.
2. three-phase off circuit tap changer according to claim 1, it is characterised in that: be in same shelves in each static contact group
Each static contact of position is collinearly arranged.
3. three-phase off circuit tap changer according to claim 2, it is characterised in that: each static contact is along corresponding fixed exhausted
The extending direction of edge bar is arranged in line in column, along the direction perpendicular to fixed insulating bar.
4. three-phase off circuit tap changer according to claim 1 or 2 or 3, it is characterised in that: the drawing handle pushes away
Draw the extending direction for being oriented parallel to the fixed insulating bar.
5. three-phase off circuit tap changer according to claim 4, it is characterised in that: be additionally provided on the drawing handle
It is used for after the moving contact component is adjusted to corresponding gear by the locking structure of drawing handle locking.
6. three-phase off circuit tap changer according to claim 5, it is characterised in that: the locking structure includes that setting exists
On drawing handle and with each gear correspondingly multiple locking holes and be inserted into the locking hole be used for and set surface
The lock pin of mutual block.
7. three-phase off circuit tap changer according to claim 6, it is characterised in that: the side of the fixed frame is also set up
There is operation panel, the through-hole being pierced by for the drawing handle, the operating surface of the through-hole circumferential direction are provided on the operation panel
Plate surface constitutes the setting surface.
8. three-phase off circuit tap changer according to claim 1 or 2 or 3, it is characterised in that: the connector is connection
Plate, the connecting plate are vertically arranged with each fixed insulating bar.
9. transformer, including transformer body and the three-phase off circuit tap changer being arranged on the transformer body,
Be characterized in that: the three-phase off circuit tap changer is using the technical solution as described in any one of the claims 1 ~ 8
It is configured.
10. transformer according to claim 9, it is characterised in that: be additionally provided on the transformer body for installing
The tap switch installs case of the three-phase off circuit tap changer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810867000.XA CN108987146B (en) | 2018-08-01 | 2018-08-01 | Three-phase non-excitation tapping switch and transformer using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810867000.XA CN108987146B (en) | 2018-08-01 | 2018-08-01 | Three-phase non-excitation tapping switch and transformer using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108987146A true CN108987146A (en) | 2018-12-11 |
| CN108987146B CN108987146B (en) | 2023-11-21 |
Family
ID=64554715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810867000.XA Active CN108987146B (en) | 2018-08-01 | 2018-08-01 | Three-phase non-excitation tapping switch and transformer using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108987146B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112133548A (en) * | 2020-09-17 | 2020-12-25 | 天津市特变电工变压器有限公司 | Large-current belt-tapping voltage-regulating dry-type transformer and voltage regulating method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2062483U (en) * | 1990-03-20 | 1990-09-19 | 沈阳市变压器开关厂 | Non-exciting shunting switch |
| CN200944345Y (en) * | 2006-08-07 | 2007-09-05 | 武汉泰普变压器开关有限公司 | Off-circuit positive and negative regulating strip-type tapping switch |
| CN201590318U (en) * | 2010-01-14 | 2010-09-22 | 浙江省三门腾龙电器有限公司 | Changeable non-excitation shunting switch |
| CN102148095A (en) * | 2010-02-10 | 2011-08-10 | 任宏宇 | Bar-shaped tapping switch for respective voltage regulation in conversion of two voltage classes by single control system |
| CN105977070A (en) * | 2016-06-28 | 2016-09-28 | 山东达驰电气有限公司 | Non-excitation tapping switch for grounding transformer |
| CN207529829U (en) * | 2017-10-13 | 2018-06-22 | 辽宁金立电力电器有限公司 | A kind of special strip-shape tap switch of triangular solid Wound iron-core transformer |
| CN208622619U (en) * | 2018-08-01 | 2019-03-19 | 河南森源电气股份有限公司 | The transformer of three-phase off circuit tap changer and the application tap switch |
-
2018
- 2018-08-01 CN CN201810867000.XA patent/CN108987146B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2062483U (en) * | 1990-03-20 | 1990-09-19 | 沈阳市变压器开关厂 | Non-exciting shunting switch |
| CN200944345Y (en) * | 2006-08-07 | 2007-09-05 | 武汉泰普变压器开关有限公司 | Off-circuit positive and negative regulating strip-type tapping switch |
| CN201590318U (en) * | 2010-01-14 | 2010-09-22 | 浙江省三门腾龙电器有限公司 | Changeable non-excitation shunting switch |
| CN102148095A (en) * | 2010-02-10 | 2011-08-10 | 任宏宇 | Bar-shaped tapping switch for respective voltage regulation in conversion of two voltage classes by single control system |
| CN105977070A (en) * | 2016-06-28 | 2016-09-28 | 山东达驰电气有限公司 | Non-excitation tapping switch for grounding transformer |
| CN207529829U (en) * | 2017-10-13 | 2018-06-22 | 辽宁金立电力电器有限公司 | A kind of special strip-shape tap switch of triangular solid Wound iron-core transformer |
| CN208622619U (en) * | 2018-08-01 | 2019-03-19 | 河南森源电气股份有限公司 | The transformer of three-phase off circuit tap changer and the application tap switch |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112133548A (en) * | 2020-09-17 | 2020-12-25 | 天津市特变电工变压器有限公司 | Large-current belt-tapping voltage-regulating dry-type transformer and voltage regulating method |
| CN112133548B (en) * | 2020-09-17 | 2023-06-13 | 天津市特变电工变压器有限公司 | High-current dry type transformer with tapping voltage regulation function and voltage regulation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108987146B (en) | 2023-11-21 |
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