CN103310962B - Tap changer and the method related to tap changer - Google Patents
Tap changer and the method related to tap changer Download PDFInfo
- Publication number
- CN103310962B CN103310962B CN201310071374.8A CN201310071374A CN103310962B CN 103310962 B CN103310962 B CN 103310962B CN 201310071374 A CN201310071374 A CN 201310071374A CN 103310962 B CN103310962 B CN 103310962B
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- fixed contact
- tap changer
- lock link
- stopper unit
- tap
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000004804 winding Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000010079 rubber tapping Methods 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
- H01H9/0027—Operating mechanisms
- H01H9/0033—Operating mechanisms with means for indicating the selected tap or limiting the number of selectable taps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/44—Driving mechanisms, i.e. for transmitting driving force to the contacts using Geneva movement
Landscapes
- Automatic Tool Replacement In Machine Tools (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Housings And Mounting Of Transformers (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
A kind of tap changer and the method related to tap changer.The tap changer has change-over switch and capability of tap selector.The capability of tap selector has multiple fixed contacts and a pair of accurate selector arms, and the accurate selector arm has the movable contact for being used for selectively engaging with any one fixed contact in the fixed contact.The tap changer includes the end position stopper equipment with lock link (37) and rotatable wheel (34).The wheel (34) is arranged to rotate special angle when the accurate selector arm is moved to adjacent fixed contact from a fixed contact.On the one hand, the wheel (34) has first end stopper unit (43a), and the first end stopper unit is arranged to abut the lock link (37) when first end contact of the accurate selector arm movement more than the fixed contact.The lock link (37) is arranged to lock the driving for turning device switch when adjacent lock link (37) of the first end stopper unit (43a).According to the present invention, the wheel (34) is included in multiple erecting devices (36) at the Difference angles for first end stopper unit (43a).The invention further relates to the method for arranging end stopper limiting device on the tap changer.
Description
Technical field
First aspect present invention is related to a kind of tap changer including change-over switch and capability of tap selector, tap selection
Utensil has an accurate selector arms of multiple fixed contacts and a pair, the selector arm have be used for it is any one in the fixed contact
The movable contact of the engagement of individual fixed contact selectivity, wherein, the tap changer includes having lock link and rotatable
The end position stopper equipment of wheel, the wheel be arranged to when the accurate selector arm be moved to from a fixed contact it is adjacent solid
Special angle is rotated during fixed contact, and the wheel has first end stopper unit, the first end on one side
Stopper unit is arranged to abut the lock when first end contact of the accurate selector arm movement more than the fixed contact
Connecting rod is determined, so that the lock link is arranged to lock the conversion when the first end stopper cell abutment lock link
The driving of switch.
The present invention relates to a kind of end position for being used to arrange the tap changer of the type of foregoing description in second aspect
The method for putting stopper.
Background technology
Tap changer is generally used for the connection with transformer to change its interconversion rate.With tap changer
In transformer, a winding in transformer has the number of turn for being connected to circuit of fixed qty.Other windings have one admittedly
Tie point is determined, so as to select another tie point among a large amount of fixed contacts, to obtain required voltage.It is selectable
Fixed contact can be behind each other along corresponding with fully extended 70% to 100% of winding part.
After the load for being connected to transformer changes or due to other influences, it may be necessary to change tie point.Generally
In response to parameter sensing, automatically triggering changes the demand of tapping point.Tap, which changes, includes multiple operations, and the operation is included for example
Disconnected via spring loads accumulator with closure switch and accurate selector arm is moved to new fixed contact.Must be according to
Specific order and perform these operations according to special time relation.
The connection that tap changes operation and included from a tie point to adjacent attachment points changes.This is by for setting up and respectively
From fixed contact contact accurate selector arm perform.
In a line fixed contact, there is first end contact and the second end contact in the end respectively of the row.When
When accurate selector arm is connected to one of them ends points, it there may be in particular case and provide mobile more than the end
The risk of the actuation instructions of portion contact, as a result damages tap changer.This mistake for being likely to occur in equipment is installed or tap
In the case of erroneous matching between selector and change-over switch, wherein discretely delivery component in many cases.In order to keep away
Exempt from so, it is however known to provide a kind of that there is the capability of tap selector for being used for preventing from operating the end position stopper more than ends points.
The end position stopper is typically implemented as example that in a few days tile-type wheel activates the accurate selector arm, thus the wheel is for the precision
Selector arm each rotates special angle from a fixed contact to adjacent fixed contact.End position on the wheel
Stopper can include being arranged on rotationally constrained a pair of stoppers for less than 360 degree of the wheel on the wheel and being arranged to
Unit.
The illustrative example of end position stopper is disclosed in US5165295, US6060669 and US7750257.
The quantity of fixed contact in tap changer changes between different models and size.The quantity of fixed contact
Generally in the scope of 5 to 35, thus with a large amount of fixed contacts tap changer generally also have be pre-selected.This meaning
Taste, which end position stopping appliance, the different designs of the fixed contact for varying number.Taken out for the difference in model scope
Head converter causes the manufacture depended on the circumstances the need for having different designs in this respect.
Taken out by being mechanically connected to tap changer so as to the operation equipment driving of the driving of the actuating of tap changer
Head converter.For security reasons, the operation equipment is generally also provided with end and sets limitation.Due to an identical can be grasped
The tap changer of different type or size is connected to as equipment, so the end of operation equipment sets limitation to be generally arranged to
The tap changer for making it may be connected to the fixed contact with varying number.
The representative instance that the end sets limitation is disclosed in US2011/005816.The end stopper is set
Limitation has indicator wheel, and the indicator wheel has the trigger for the movement with angle for being used to limit the indicator wheel, because
The trigger hits trigger disk at end position.Can by the selected hole of inserting the trigger in the indicator wheel come
Select the angle position of the trigger.
But the flexibility that the operation equipment being achieved by is adapted to different tap changers can not solve to be used for difference
The requirement of the various designs of the end position stopper of the tap changer of the fixed contact of quantity.
The content of the invention
It is an object of the invention to overcome the disadvantages mentioned above related to the end position stopper in tap changer, and
Therefore such a tap changer is obtained, the end position stopper of the wherein tap changer can be easily adaptable to change
Fixed contact quantity.
The purpose is realized according to the present invention, because the tap changer for that type specified in the introduction of specification includes
Specific features：The wheel of end position stopper includes multiple peaces at the Difference angles for first end stopper unit
Assembling device.
When accurate selector arm, which receives order, exceedes the first end contact of fixed contact with movement, first end stops
Device unit prevents switching.Due to can be by selecting any erecting device in the wheel to select the angle of end stopper unit
Installation site, it is possible to stopped in the tap changer of the fixed contact with varying number using identical end position
Device.This reduction manufacture and assembly cost.Need a small amount of article, and may be in product structure and later stage in the fabrication process
Assembling.Because reducing the quantity of built-up time and the article in storage, production cost will be lower.
According to the preferred embodiment of the tap changer of the present invention, the wheel has the second end stopper unit, and this
Two end stopper units are arranged to adjacent when the second end contact of the accurate selector arm movement more than the fixed contact
The lock link is connect, so that the lock link is arranged to lock when the second end stopper cell abutment lock link
The driving of the change-over switch.
Also prevent actuating more than the second end contact of the fixed contact using the embodiment.So as to by same phase
End position stopper function is obtained in both direction with equipment.
According to another preferred embodiment, the second end that is also used for that the wheel is included in different angular positions stops
Only multiple erecting devices of device unit.
Thus further increase adapts to end position stopping for the tap changer of the fixed contact with varying number
The flexibility of device.
According to another preferred embodiment, the wheel is Geneva wheel.
The wheel thus is arranged to be driven by geneva mechanism, and the geneva mechanism is particularly suitable for use in realizing stepping rotation shifting
It is dynamic.
According to another preferred embodiment, Geneva wheel has at least 36 driver slots.
Using the driver slot of the quantity, the end position stopper equipment will be applied to up to 35 fixed contacts.This sets
Such a scope of the quantity of standby therefore covering fixed contact, wherein almost all tap-changer operation are in this range.
According to another preferred embodiment, the wheel is included at least 36 erecting devices of different angular positions.
The embodiment is also particularly suitable the quantity for the fixed contact for applying the present invention to be used in most of situation
Scope.
According to another preferred embodiment, whole erecting devices are mutually the same.
This simplifies end stopper unit to the installation of each selected erecting device.
According to another preferred embodiment, whole erecting devices are located on identical radius.
This provides the unified of wheel and designs and simplify its manufacture.In any angle position of respective stopper unit
The cooperation put between stopper unit and lock link also will be identical.
According to another preferred embodiment, each erecting device is the axial hole by the wheel.
This provides the very easy method for installing each end stopper unit in an erecting device.At this
In be axially related to the axle of the wheel.
According to another preferred embodiment, each end stopper unit be screw and each hole by it is threaded with
Just coordinate with it.
So as to which each end stopper unit is installed in the selected hole of the wheel with very easy method.
By threaded, end stopper unit will be fixed in position.
According to another preferred embodiment, the lock link is pivotally mounted on around the pivot parallel with the axle of the wheel,
Wherein the pivot is located at the peripheral outside of the wheel, and the wherein lock link has such side in the wheel adjacent with the wheel
On free end, wherein each end stopper unit be located at the side on, wherein free end radially reach each erecting device
Position inside.
Thus when the lock link hits the driving to lock the change-over switch by an end stopper unit, the lock
Movement can be transmitted with simple mode by determining connecting rod.
The invention further relates to a kind of transformer, the transformer includes the tap changer according to the present invention, in particular it relates to
According to the tap changer of any one preferred embodiment of the present invention.
According to the second aspect of the invention, the method described in detail in the introduction of this specification includes adapting to end position
Stopper device is for the fixed contact of varying number, and the adaptation includes step in detail below：
- wheel and first end stopper unit are provided,
- multiple erecting devices are arranged on the wheel,
The quantity of-the fixed contact depended in the capability of tap selector installs dress to select one in the erecting device
Put,
- the first end stopper unit is arranged on selected erecting device.
According to preferred embodiment, according to the present invention, specifically, according to any one side of being preferable to carry out of the present invention
This method is performed on the tap changer of formula.
The transformer of the present invention and the method for the present invention have tap changer and its side of being preferable to carry out with the present invention
The advantage identical advantage of formula, wherein be hereinbefore described the present invention tap changer and its preferred embodiment it is excellent
Point.
The above-mentioned preferred embodiment of the present invention is described in detail in the dependent claims.It will be appreciated that, by above-mentioned
Spy described in any possible combination of preferred embodiment and the description by these embodiments and examples below
Any possible combination levied, it is of course possible to constitute further preferred embodiment.
The present invention will be explained further by the described in detail below and refer to the attached drawing of an example of the present invention.
Brief description of the drawings
Fig. 1 a-1c schematically illustrate the tap changer according to the present invention.
Fig. 2 is the end-view of the major part of the end position stopper of the tap changer in Fig. 1 a-1c.
Fig. 3 is the engineer's scale amplification profile along Fig. 2 line III-III.
Embodiment
Fig. 1 a-1c schematically illustrate tap changer.Fig. 1 a are applied to so according to the equipment of the present invention
A kind of single-phase figure of tap changer 100.Tap changer 100 is connected to the regulation winding of transformer and has one group not
With tap 102, in this case, the quantity of tap is 16, but the quantity can be for example from 5 to 35 any amount
Some other quantity.Fig. 1 a tap changer is change-over switch type and including change-over switch 120 and capability of tap selector
110。
Fig. 1 capability of tap selector 110 is operated using being pre-selected and precision selecting, and therefore includes device is pre-selected
Arm 51 and accurate selector arm 101.Device arm 51 in rotary moving to operate is pre-selected by respective shown in Fig. 1 b and 1c
With accurate selector arm 101.Device arm 51, which is pre-selected, to be moved between two fixed contacts, and can cause each essence
Any one of close selector arm 101 fixed contact different with 5 to 9 is contacted.Device arm 51 and accurate selector arm is pre-selected
Therefore 101 integrated positioning represents up to 35 different taps.
Converter switch 120 has one group of breaker such as vacuum circuit breaker in known manner.When needs are taken out from one
Head changes to during another tap, disconnects in a particular order and closes these breakers.This allows selector arm 51,101
Respectively adjacent fixed contact is moved to from a fixed contact.
Fig. 2 be a diagram that the end-view of the primary clustering of the end position stopper according to an example of the present invention.Enclose
It is the wheel 34 that Geneva is taken turns around the rotatable installation form of axle 49.Geneva wheel has multiple driver slots 35.In the example shown, drive
The quantity of dynamic groove 35 is 36.By being installed to for driving the gear 31 of the axle 30 of selector arm (not shown) to drive Geneva to take turns.
Chain 32 is by the rotary drive of gear 31 to Geneva driving wheel 33, and the groove 35 that Geneva driving wheel 33 takes turns 34 with Geneva is in
Geneva drive connection.
Geneva wheel 34 has multiple erecting devices 36 for end stopper unit 43a, 43b.In this example, often
Individual erecting device is to extend axially through Geneva wheel 34 and the screwed hole 36 on common circle.In the figure, first
End stopper unit 43a is installed in the 36a of hole and the second end stopper unit 43b is installed in the 36b of hole.
End stopper unit 43a, 43b that lock link 37 is arranged to take turns with Geneva on 34 coordinate.Lock link
It can be rotated around pivot 38.The inside that the free end 39 of the lock link radially reaches Geneva wheel 34 exceedes 36, hole position
In circle.The free end 39 of lock link 37 sufficiently closes to Geneva wheel 34, to interfere end stopper unit 43a, 43b.By
The other end of lock link is connected to the transmission for being arranged to the driving lock 42 for activating change-over switch axle (not shown) by joint 40
Connecting rod 41.Mobile up and down by kinematic link 41 activates driving lock.
When axle 30, which moves selector arm, to move a step, the drive connection for taking turns 34 to Geneva causes Geneva wheel in selection
A groove step is rotated in direction determined by the direction that device arm has been moved.If 34 side clockwise in the figure is taken turns in Geneva
Walked to middle one groove of rotation, then end stopper unit 43a will move corresponding angle with angle towards lock link 37.
After the movement of some accurate selector arms (wherein the movement accounts for leading in one direction), end stopper unit 43a will
Close to lock link 37.When accurate selector arm has arrived at an ends points of fixed contact, end stopper unit
43a will be positioned such that close to lock link 37.Further mobile in equidirectional in order tap changer is to exceed end
In the case of contact, further rotating for Geneva wheel will cause the freedom of end stopper unit 43a adjoining lock links 37
End 39.This causes lock link 37 to be rotated around its pivot 38 and via kinematic link activation driving lock 42, thus hinders
The only actuating of change-over switch.
Correspondingly, when reach the other end ends points when another end stopper unit 43b will in the opposite direction in
Act on lock link 37.
The position of end stopper unit 43a, 43b in the figure are applied to 35 fixed contacts.For fixed contact
Use in the application of quantity less, end stopper unit 43a, 43b are installed in other holes 36, and wherein other holes 36 have
There is the position suitable for the fixed contact quantity.If the quantity of fixed contact is 29, end stopper unit 43a, 43b points
It is not installed in hole 36c and 36d.On 21 fixed contacts, hole 36e, 36f will be used for mounting end stopper unit 43a,
43b, it is such.
Fig. 3 is the profile along Fig. 2 line III-III.Hole 36a has a screw thread 45, and by end stopper unit 43a
It is manufactured into the screw with corresponding screw thread 47.Screw 43a head 48 is the portion for being arranged to abut locking lever 37
Point.
Claims (13)
1. a kind of tap changer (100), including change-over switch (120) and capability of tap selector (110), the capability of tap selector
(110) there is the accurate selector arms (101) of multiple fixed contacts (102) and a pair, the accurate selector arm have for
The movable contact that any one fixed contact in the multiple fixed contact (102) is selectively engaged, wherein, the tap
Selector includes the end position stopper equipment with lock link (37) and rotatable wheel (34), the rotatable wheel (34)
It is arranged to rotate specific angle when the accurate selector arm (101) is moved to adjacent fixed contact from a fixed contact
Degree, and wherein, the rotatable wheel (34) has first end stopper unit (43a), the first end in its side
Stopper unit is arranged to when the accurate selector arm (101) is mobile more than the first of the multiple fixed contact (102)
The lock link (37) is abutted during ends points, so that the lock link (37) is arranged to when the first end stops
The driving of the change-over switch (120) is locked during device unit (43a) adjoining lock link (37), it is characterised in that described
Rotatable wheel (34) includes the multiple erecting devices (36) for being used to install the first end stopper unit (43a), wherein, institute
Erecting device (36) is stated positioned at different angular positions, the rotatable wheel (34) is stopped on the side with the second end
Only device unit (43b), the second end stopper unit is arranged to exceed institute when the accurate selector arm (101) is mobile
The lock link (37) is abutted during the second end contact for stating multiple fixed contacts (102), so that the lock link (37)
It is arranged to lock the change-over switch when adjacent lock link (37) of the second end stopper unit (43b)
(120) driving.
2. tap changer (100) according to claim 1, it is characterised in that the rotatable wheel (34) is included in not
Same angular position is also used for installing multiple erecting devices (36) of the second end stopper unit (43b).
3. tap changer (100) according to claim 1, it is characterised in that the rotatable wheel is Geneva wheel.
4. tap changer (100) according to claim 3, it is characterised in that the Geneva wheel has at least 36
Driver slot (35).
5. tap changer (100) according to claim 1, it is characterised in that the rotatable wheel (34) is included in not
At least 36 erecting devices (36) of same angular position.
6. tap changer (100) according to claim 1, it is characterised in that whole erecting devices (36) are mutually the same.
7. tap changer (100) according to claim 1, it is characterised in that whole erecting devices (36) are located at identical
Radius on.
8. tap changer (100) according to claim 1, it is characterised in that each erecting device be by it is described can
The axial hole of rotating wheel (34).
9. tap changer (100) according to claim 8, it is characterised in that each end stopper unit is screw
Follow closely and each axial hole is by the threaded cooperation so as to the screw.
10. the tap changer (100) described in any one in claim 1 to 9, it is characterised in that around with institute
The parallel pivot (38) of axle (49) for stating rotatable wheel (34) is pivotally mounted on the lock link (37), wherein, the pivot
(38) it is located at the peripheral outside of the rotatable wheel (34), wherein, the lock link (37) has in the rotatable wheel
(34) free end (39) adjacent with the rotatable wheel (34) on side, wherein, each end stopper unit (43a,
43b) it is located on the side, wherein the free end (39) radially reach the inside of the position of each erecting device (36).
11. a kind of transformer, it is characterised in that the transformer is included described in any one in claim 1 to 10
Tap changer (100).
12. one kind is used for the method for arranging the end position stopper equipment of tap changer (100), wherein, the tap becomes
Parallel operation (100) includes change-over switch (120) and capability of tap selector (110), wherein, the capability of tap selector (110) has multiple
Fixed contact (102) and accurate selector arm (101), the accurate selector arm, which has, to be used for and the multiple fixed contact
(102) movable contact that any one fixed contact in is selectively engaged, wherein, the capability of tap selector (100) includes
End position stopper equipment with lock link (37) and rotatable wheel (34), the rotatable wheel (34) is arranged to work as
The accurate selector arm (101) rotates special angle when being moved to adjacent fixed contact from a fixed contact, and described
Taking turns (34) has first end stopper unit (43a), and the first end stopper unit is arranged to when the accurate choosing
Select when device arm (101) movement exceedes the first end contact of the multiple fixed contact (102) and abut the lock link (37),
So as to which the lock link (37) is arranged to when the adjacent lock link (37) of the first end stopper unit (43a)
The driving of change-over switch described in Shi Suoding (120), the rotatable wheel (34) has the second end stopper unit on side
(43b), the second end stopper unit is arranged to when the accurate selector arm (101) is mobile more than the multiple solid
The lock link (37) is abutted during the second end contact of fixed contact (102), so that the lock link (37) is arranged to
The drive of the change-over switch (120) is locked when adjacent lock link (37) of the second end stopper unit (43b)
Dynamic, methods described includes adjusting the end position stopper equipment for the fixed contact (102) of varying number, wherein adjusting
It is whole to comprise the following steps：
- rotatable wheel (34) and the first end stopper unit (43a) are provided,
- multiple erecting devices (36) are arranged in the rotatable wheel (34),
The quantity of-the fixed contact (102) in the capability of tap selector (110) selects the multiple erecting device (36)
In an erecting device (36),
- the first end stopper unit (43a) is arranged on selected erecting device (36).
13. method according to claim 12, it is characterised in that by according to any one institute in claim 1 to 11
The tap changer (100) stated performs methods described.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP12158241.5 | 2012-03-06 | ||
| EP20120158241 EP2637185B1 (en) | 2012-03-06 | 2012-03-06 | A tap changer and a method related thereto |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103310962A CN103310962A (en) | 2013-09-18 |
| CN103310962B true CN103310962B (en) | 2017-07-25 |
Family
ID=45841266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310071374.8A Active CN103310962B (en) | 2012-03-06 | 2013-03-05 | Tap changer and the method related to tap changer |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP2637185B1 (en) |
| CN (1) | CN103310962B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2863403B1 (en) * | 2013-10-18 | 2016-03-30 | ABB Technology AG | Transformer |
| EP3761333B1 (en) * | 2019-07-01 | 2023-08-30 | Hitachi Energy Switzerland AG | Drive arrangement for a tap changer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1039129B (en) * | 1954-04-02 | 1958-09-18 | Siemens Ag | Step switching devices with intermittent gears for step change gears of regulating transformers |
| US6693247B1 (en) * | 2000-06-09 | 2004-02-17 | Mcgraw-Edison Company | Load tap changer with direct drive and brake |
| CN102077308A (en) * | 2008-08-01 | 2011-05-25 | 赖茵豪森机械制造公司 | Manual drive for a tap changer for tap-changing transformers |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4009503A1 (en) | 1990-03-24 | 1991-09-26 | Reinhausen Maschf Scheubeck | STEPPER TRANSMISSION FOR STEPPERS OF STEPPING TRANSFORMERS |
| DE19743864C1 (en) | 1997-10-04 | 1999-04-15 | Reinhausen Maschf Scheubeck | Tap changer |
| US7750257B2 (en) * | 2004-06-03 | 2010-07-06 | Cooper Technologies Company | Molded polymer load tap changer |
| CN101944407A (en) | 2009-07-07 | 2011-01-12 | 群康科技(深圳)有限公司 | Conducting plate and manufacturing method thereof |
-
2012
- 2012-03-06 EP EP20120158241 patent/EP2637185B1/en active Active
-
2013
- 2013-03-05 CN CN201310071374.8A patent/CN103310962B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1039129B (en) * | 1954-04-02 | 1958-09-18 | Siemens Ag | Step switching devices with intermittent gears for step change gears of regulating transformers |
| US6693247B1 (en) * | 2000-06-09 | 2004-02-17 | Mcgraw-Edison Company | Load tap changer with direct drive and brake |
| CN102077308A (en) * | 2008-08-01 | 2011-05-25 | 赖茵豪森机械制造公司 | Manual drive for a tap changer for tap-changing transformers |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2637185A1 (en) | 2013-09-11 |
| CN103310962A (en) | 2013-09-18 |
| EP2637185B1 (en) | 2014-01-15 |
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