EP2666172A1 - Stufenschalter - Google Patents
StufenschalterInfo
- Publication number
- EP2666172A1 EP2666172A1 EP12700547.8A EP12700547A EP2666172A1 EP 2666172 A1 EP2666172 A1 EP 2666172A1 EP 12700547 A EP12700547 A EP 12700547A EP 2666172 A1 EP2666172 A1 EP 2666172A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- switching
- contact unit
- carriers
- pins
- 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
Links
- 239000000969 carrier Substances 0.000 claims abstract description 14
- 238000004804 winding Methods 0.000 claims abstract description 4
- 239000007787 solid Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000013011 mating Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 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
- 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
- H01H9/0044—Casings; Mountings; Disposition in transformer housing
-
- 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
- H01H2009/0022—Mounting of the fixed contacts or taps on cylindrical wall of oil vessel containing the tap changer; Details of screening
Definitions
- the present invention relates to a tap-changer for uninterruptible
- On-load tap-changers have been used in transformers for many years to adjust the voltage, active and reactive power of electrical networks by changing the transmission ratio under load.
- the setting of the gear ratio is done in stages;
- the transformer is equipped with a tap winding whose taps are connected by the tap changer.
- Insulating tape to be wrapped.
- Shift shaft must be accessible.
- this method of attachment has not been able to prevail by wrapping. This is partly due to the fact that with this type of attachment a relatively large amount of space around the switch column around must be present in order to wrap the insulating tape around them and possibly to be able to soak with resin. On the other hand, it is not in this attachment possible, without much effort, the contact carrier to be released from the shift shaft, during maintenance, for example. In this case, the Isolierstoffwicklung is inevitably destroyed and must be reapplied in each case.
- a load selector or a tap selector for a tapped transformer which consists of a Isolierstoffzylinder, on the inside of fixed stepped contacts are arranged, as well as an arranged inside, rotatable by known drive means, switching shaft.
- drive means, switching shaft At the shift shaft are one or more
- Attached contact units each having at least one switching contact.
- Each of the contact units is by a two-piece, flange
- the shift shaft include a flange and braced by outside the shift shaft extending clamping means with each other. Furthermore, at least one centering aid is provided on the outer surface of the switching shaft, with the two-piece clamping ring
- the switching shaft usually made of glass fiber reinforced plastic must be reworked in the known solution mandatory, especially turned off, which brings a significant time and cost.
- this is absolutely necessary because the two-piece and flange-shaped clamping ring as a support surface requires a well-defined diameter of the shift shaft for a permanent and fixed fixation.
- a rotation is used in DE 44 14 951 just inserted into a blind hole centering.
- this proposed by the applicant solution has proven in practice impractical, since the centering pin is unsuitable to transmit forces, but at the same time exposed to high mechanical shear forces when turning the shift shaft. Overall, this results in a potential for improvement from a manufacturing and cost perspective.
- Object of the present invention is therefore to provide a simple and inexpensive to manufacture contact unit, which also durable and stable with the
- Switching shaft can be connected and still does not require the
- Screw contact unit with the switching shaft This object is achieved by a tap changer with the features of the first claim.
- the subclaims relate to particularly advantageous developments of the invention.
- the general inventive idea consists in proposing a contact unit of a plurality of identically constructed contact carriers, which can be mounted to each other by simply plugging together to form a finished contact unit, wherein the individual contact carrier, each with a strap clamp to the shift shaft are fixable and further as anti-rotation on each contact carrier , on the shift shaft
- At least two geometrically specially shaped pins are provided which can be brought into engagement with provided in the shift shaft blind holes in engagement, such that the entire contact unit is thus secured against rotation.
- the finished contact unit consists of several identically constructed contact carrier, which only have to be plugged together in different directions, this saves the manufacturer enormous manufacturing effort and thus costs. Also accompanied by a simpler spare parts delivery for the manufacturer, since fewer items must be kept for the entire assembly. Instead of a two-piece, flange-like clamping ring to use multiple clamps, has proven to be the
- FIG. 1 shows a contact unit according to the invention for a tap changer in a side view
- FIG. 1 shows a contact unit 2 according to the invention constructed from a plurality of identical contact carriers 1 for a step switch not shown in detail, because it is known.
- the individual contact carrier 1, and thus the entire contact unit 2, are by means of Clamp clamps 3 on one, for reasons of clarity, also not shown, shift shaft mountable.
- the clamp clips 3 are designed such that they easily adapt to the geometric shape of the switching shaft, in particular permanently and stably adhere to the outer peripheral surface.
- the respective ends of the clamp clips 3 are provided in provided on the contact carriers 1, having a through hole, blocks 4 and secured by means of fasteners 5, here, for example, with nuts, permanently secured against accidental removal.
- the contact carriers 1 each have a receiving plate 7 provided with a plurality of bores 6 for switching means, not shown here.
- the switching means may in particular also be known from the prior art
- Roll contacts act, which are positioned between the individual mounting plates 7. For reasons of mechanical strength, the receiving plates 7 with
- Strut sections 8 reinforced. On both side surfaces of the contact carrier 1 are each upwardly and downwardly directed and also in number alternating
- Latches 9 attached each offset by a few 10ths of a mm, based on their height, are arranged. This is because in each case a bolt 10 can be hammered during assembly of the contact unit 2, which is slightly mechanically deformed by the displaced arrangement of the locking lugs 9 and thus secured against accidental falling out, which in the embodiments of Figures 2a and b will be explained in more detail.
- Figures 2a and 2b show a single contact carrier 1 according to the invention in a bottom view and a top view.
- the contact carrier 1 formed from electrically non-conductive material has on both sides, ie both the upper side and the lower side, a plurality of pins 11 and blind holes 12, which are positioned in such a way that
- the pins 11 engage the respective top of a contact carrier 1 in the blind holes 12 of the corresponding bottom of another contact carrier 1 and vice versa. In this way, any number of contact carriers 1 to a contact unit 2 can be plugged together. Furthermore, the locking lugs 9 protrude so far beyond the lateral wall of the respective contact carrier 1, that during mating of two or a plurality of individual contact carriers 1 in the overlapping region then corresponding locking lugs 19, a bolt 10 can be beaten to hook, which is also apparent in Figure 1. Overall, then there are two or more
- the contact carrier 1 On the opposite side of the receiving plate 7, the contact carrier 1 has a half-shell portion 13, on which also laterally the blocks 4 for receiving the
- Clamp clamps 3 are attached. With this half shell 13, the respective contact carrier 1 is arranged on the switching shaft, not shown, a contact-fit. As a rotation and for permanent mechanical fixation, a plurality of geometrically specially shaped pins 14 are mounted on the inside of the half-shell 13, ie on the side facing the shift shaft, which are supported over a large area in provided on the shift shaft blind holes.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Clamps And Clips (AREA)
- Breakers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011008964A DE102011008964B4 (de) | 2011-01-20 | 2011-01-20 | Stufenschalter |
PCT/EP2012/000018 WO2012097959A1 (de) | 2011-01-20 | 2012-01-04 | Stufenschalter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2666172A1 true EP2666172A1 (de) | 2013-11-27 |
EP2666172B1 EP2666172B1 (de) | 2016-04-06 |
Family
ID=45507685
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12700547.8A Active EP2666172B1 (de) | 2011-01-20 | 2012-01-04 | Stufenschalter |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP2666172B1 (de) |
CN (1) | CN103314425B (de) |
BR (1) | BR112013016126B1 (de) |
DE (1) | DE102011008964B4 (de) |
ES (1) | ES2580958T3 (de) |
UA (1) | UA116523C2 (de) |
WO (1) | WO2012097959A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113192775B (zh) * | 2021-04-26 | 2022-11-18 | 国网河南省电力公司超高压公司 | 一种有载调压开关用触头组件 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB356714A (en) * | 1930-06-06 | 1931-09-07 | British Electric Transformer C | Improvements in or relating to voltage regulators for electrical transformers |
DE3226854A1 (de) * | 1982-07-17 | 1984-01-19 | Maschinenfabrik Reinhausen Gebrüder Scheubeck GmbH & Co KG, 8400 Regensburg | Lastwaehler fuer stufentransformatoren mit einem schrittweise drehbaren schaltrohr |
DE3827385A1 (de) * | 1988-08-12 | 1990-02-15 | Reinhausen Maschf Scheubeck | Zylindrischer stufenwaehler mit durch einen tragarm aus isolierstoff gefuehrter kontaktbruecke |
DE9405427U1 (de) * | 1994-03-30 | 1995-04-27 | Maschinenfabrik Reinhausen Gmbh, 93059 Regensburg | Lastwähler mit Überschaltwiderständen |
EP0680062B1 (de) * | 1994-04-28 | 2000-06-14 | MASCHINENFABRIK REINHAUSEN GmbH | Lastwähler |
DE102007023124B3 (de) * | 2007-05-16 | 2008-10-02 | Maschinenfabrik Reinhausen Gmbh | Schaltanordnung |
-
2011
- 2011-01-20 DE DE102011008964A patent/DE102011008964B4/de not_active Expired - Fee Related
-
2012
- 2012-01-04 WO PCT/EP2012/000018 patent/WO2012097959A1/de active Application Filing
- 2012-01-04 EP EP12700547.8A patent/EP2666172B1/de active Active
- 2012-01-04 BR BR112013016126-4A patent/BR112013016126B1/pt not_active IP Right Cessation
- 2012-01-04 ES ES12700547.8T patent/ES2580958T3/es active Active
- 2012-01-04 CN CN201280005828.5A patent/CN103314425B/zh active Active
- 2012-04-01 UA UAA201309121A patent/UA116523C2/uk unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2012097959A1 * |
Also Published As
Publication number | Publication date |
---|---|
BR112013016126A2 (pt) | 2018-06-05 |
CN103314425B (zh) | 2016-04-20 |
CN103314425A (zh) | 2013-09-18 |
WO2012097959A1 (de) | 2012-07-26 |
UA116523C2 (uk) | 2018-04-10 |
BR112013016126B1 (pt) | 2020-07-07 |
DE102011008964B4 (de) | 2013-12-24 |
DE102011008964A1 (de) | 2012-07-26 |
ES2580958T3 (es) | 2016-08-30 |
WO2012097959A8 (de) | 2013-08-01 |
EP2666172B1 (de) | 2016-04-06 |
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Inventor name: SCHLEPP, KLAUS Inventor name: LEDERER, PHILIPP Inventor name: STREMPEL, ROLF Inventor name: REHKOPF, SEBASTIAN Inventor name: BOEGER, CHRISTIAN Inventor name: JATTA, MARTIN Inventor name: HOTTNER, TONI |
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