WO2012097958A1 - Tap changer - Google Patents
Tap changer Download PDFInfo
- Publication number
- WO2012097958A1 WO2012097958A1 PCT/EP2012/000017 EP2012000017W WO2012097958A1 WO 2012097958 A1 WO2012097958 A1 WO 2012097958A1 EP 2012000017 W EP2012000017 W EP 2012000017W WO 2012097958 A1 WO2012097958 A1 WO 2012097958A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- contact
- switching
- resistance
- contacts
- tap changer
- Prior art date
Links
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
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/16—Contacts characterised by the manner in which co-operating contacts engage by abutting by rolling; by wrapping; Roller or ball contacts
Definitions
- the invention relates to a tap changer of the load selector type for uninterrupted switching between winding taps of a tapped transformer.
- Such a tap changer of the load selector type is already known from DE 32 07 894 A1.
- individual fixed stage contacts are arranged on a circular arc on the inner wall of a cylindrical oil vessel; below or above sits one as
- a contact bridge is provided, by means of which either each of the tap contacts can be connected to the load discharge either.
- the contact bridge in this case has an upper and lower contact roller, both of which are mounted in one arm of a contact bridge carrier and which are electrically conductively connected to each other via a flexible line.
- the flexible electrical line In the flexible electrical line is a steel core, which is firmly connected to both contact rollers.
- Contact bridge carrier is moved stepwise by means of a rotatable drive tube mounted in the interior of the oil vessel.
- a rotatable drive tube mounted in the interior of the oil vessel.
- either one of the fixed step contacts is connected to the continuous contact path forming the load dissipation.
- the fixed contacts are provided with chamfers.
- the described flexible cable has the advantage that even small, unavoidable in manufacturing, tolerances between the fixed contacts and the continuous contact path can be compensated.
- Contact ring is applied and which is electrically connected via a wire with the contact roller of a main switching contact.
- Step contacts are also connectable here by corresponding contacts, which are arranged on a contact carrier in the horizontal direction next to each other such that when Pivoting the contact carrier in each case one of the contacts reaches the new fixed stage contact, before the other of these contacts the previous solid
- Step contact leaves One of the contacts acts as a switching contact, the other contact as a resistance contact, which is electrically connected to at least one switching resistor and only during the actual switching briefly establishes an electrical connection to one of the fixed stage contacts in the wall.
- the object of the invention is to provide a particularly inexpensive and simply constructed tap changer of the load selector type, which allows a small diameter of the oil vessel, also has a simple contact arrangement and can dispense with the described electrically conductive flexible connection.
- the subclaims relate to particularly advantageous
- the invention is based on the general idea to design the moving contacts as particularly simple and inexpensive contact rollers and to arrange offset in each phase in two horizontal planes. Furthermore, it is a general inventive idea to also provide simple corresponding fixed contacts that can be connected in common in each phase of the contact roles of both levels and also allow easy control of the role processes. Finally, within the scope of the invention in an advantageous embodiment by a specially designed grinding customer acting on the respective contact rollers, the known from the prior art electrically conductive flexible connection superfluous.
- the invention will be explained in more detail by way of example with reference to drawings. It shows: a movable contact arrangement of a tap changer according to the invention a corresponding fixed contact arrangement
- FIG. 1 shows a movable contact arrangement of a tap changer according to the invention is shown, in a schematic, perspective view.
- a rotatable drive shaft 1 to which a contact carrier 2 is fixed, for example by screws or by means of a
- Clamping flange The arrangement shown here refers to a phase to be switched.
- a first horizontal plane - top - two resistance contact rollers 3, 4 are provided, which have a certain radial distance from each other.
- FIG. 2 shows a fixed contact arrangement of a device according to the invention
- the contact pieces 8 are arranged for each phase to be switched in a horizontal plane. Their vertical extent is such that they can be connected by both the corresponding resistance contact rollers and the corresponding switching contact roller of the corresponding phase. Below, in one another horizontal plane, a continuous electrically conductive discharge 9 is provided, which corresponds in a known manner with the discharge roller 6 of the respective phase.
- FIG. 3 shows the interaction of the illustrated components. It can be seen that the resistance contact rollers arranged on the contact carrier 2, only one resistance contact roller 3 being visible in this illustration, and the switching contact roller 5 arranged below and offset there, shown in section here, jointly cover the upper and lower part of the contact piece 8, Thus, the fixed contact, which is fixed in the wall of the insulating cylinder 7 beschalte.
- an electrical pickup 13 which will be explained in more detail below. It is used for electrical connection of the respective contact rollers to the other components and ultimately to the discharge bar, not shown here.
- the pickup 13 is pressed by a spring 17 against the various contact rollers.
- the contact rollers themselves are made of any electrically conductive material, such as copper, brass or steel. You can also use a special coating to prevent burning or excessive wear, such. As silver, own.
- FIG. 4 shows a contact roller and the associated components alone.
- the contact roller 10 shown here is identical in a particularly advantageous manner both for the function as a resistance contact roller and as a switching contact roller. It is, as already explained, made of electrically conductive material and integrally formed here, which is not mandatory. It has in the middle of the actual contact area 11 and laterally thereof an upper recess 12 and a lower recess 12a. Laterally thereof, the already mentioned customer 13 is provided, which has an upper sliding contact 14 and a lower
- Slip contact 15 has. The upper sliding contact 14 runs continuously on the upper
- the lower sliding contact 15 runs continuously on the lower recess 12a.
- the pickup 13 is also made entirely of electrically conductive material. It is guided together with the contact roller 10 in each case in a swing frame or lever 16, which is articulated on the contact carrier, which is not shown here, pivotally.
- the already described spring 17 between swing frame 16 and customer 13 presses this constantly with its sliding contacts 14, 15 against the recesses 12, 12a of the contact roller 10.
- Angedehmen here is still a cable lug 24, to which an electrical connection line is connected, each of the electrical Establishes connection of the corresponding contact roller to the other components of the tap changer.
- FIG. 5 shows a fixed contact piece 8 alone.
- the electrically conductive contact piece 8 has as integral components two separate, the contact rollers facing contact areas: In the upper part of an electrically conductive resistor contact 18 is provided, in the lower region, a likewise electrically conductive switching contact 19.
- the upper resistor contact 18 is in each case of the upper resistance contact rollers 3 and 4, as shown in Figure 1, connectable.
- the switching contact 19 is of the respective switching contact roller 5, which is also shown in Figure 1, connectable.
- the contact piece 8 is surrounded by a frame 20 made of insulating material. There is a recess 21 between the resistor contact 18 and the switch contact 19, that is, there is no contact rollers
- the frame 20 On both sides of the resistance contact 18, the frame 20 has an upper guide contour 22a and a lower guide contour 22b for guiding the resistance contact rollers 34. Underneath, it has on both sides of the switching contact 9 an upper guide contour 23 a and a lower guide contour 23 b for guiding the corresponding switching contact roller 5.
- the guide contours 22a and 22b and 23a and 23b each have the same geometric contour. In contrast, the geometric contour of the guide contours 22a and 22b deviates from that of the guide contours 23a and 23b. Through these leadership contours is a targeted control of the corresponding
- the contact piece 8 is made of any electrically conductive material made of copper, brass or steel. It can also be a special plating for
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112013016129A BR112013016129A2 (en) | 2011-01-20 | 2012-01-04 | load selector-type tap-changer for uninterrupted switching between winding tappings of a step-down transformer |
CN201280005825.1A CN103314422B (en) | 2011-01-20 | 2012-01-04 | Shunting switch |
EP12700057.8A EP2666171A1 (en) | 2011-01-20 | 2012-01-04 | Tap changer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011008965 | 2011-01-20 | ||
DE102011008965.9 | 2011-01-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012097958A1 true WO2012097958A1 (en) | 2012-07-26 |
Family
ID=45463611
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2012/000017 WO2012097958A1 (en) | 2011-01-20 | 2012-01-04 | Tap changer |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2666171A1 (en) |
CN (1) | CN103314422B (en) |
BR (1) | BR112013016129A2 (en) |
WO (1) | WO2012097958A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113539708A (en) * | 2020-04-15 | 2021-10-22 | 天津首瑞智能电气有限公司 | Phase-change switch |
CN113539736A (en) * | 2020-04-15 | 2021-10-22 | 天津首瑞智能电气有限公司 | Switch device |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE557982C (en) * | 1930-09-04 | 1932-08-30 | Koch & Sterzel Akt Ges | Control contact device for electrical apparatus, in particular induction devices, with a rolling contact configured in the manner of a gearwheel |
US2231627A (en) * | 1934-04-20 | 1941-02-11 | Jansen Bernhard | Step switch device for regulating transformers |
FR2454167A1 (en) * | 1979-04-12 | 1980-11-07 | Reinhausen Kg Maschf | CONTACT DEVICE FOR SELECTOR IN CHARGE OF STEP-BY-STEP TRANSFORMERS |
DE3207894A1 (en) | 1982-03-05 | 1983-09-15 | Maschinenfabrik Reinhausen Gebrüder Scheubeck GmbH & Co KG, 8400 Regensburg | CONTACT ARRANGEMENT FOR TAPE SWITCHES OF TAPE TRANSFORMERS |
EP0132662A1 (en) * | 1983-07-22 | 1985-02-13 | Transformatoren Union Aktiengesellschaft | Load selector for tapped transformers |
EP0146396A2 (en) * | 1983-12-15 | 1985-06-26 | Mitsubishi Denki Kabushiki Kaisha | Change-over switch for an on-load tap changer |
DE3401297A1 (en) * | 1984-01-16 | 1985-07-18 | Transformatoren Union Ag, 7000 Stuttgart | LOAD SELECTOR FOR STAGE TRANSFORMERS |
DE3407332A1 (en) | 1984-02-29 | 1985-08-29 | Maschinenfabrik Reinhausen Gebrüder Scheubeck GmbH & Co KG, 8400 Regensburg | Load selector for stepping transformers having switching contacts which can be rolled off |
DE19821775C1 (en) | 1998-05-14 | 1999-10-14 | Reinhausen Maschf Scheubeck | Load selector for step transformer |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007023124B3 (en) * | 2007-05-16 | 2008-10-02 | Maschinenfabrik Reinhausen Gmbh | switching arrangement |
-
2012
- 2012-01-04 EP EP12700057.8A patent/EP2666171A1/en not_active Withdrawn
- 2012-01-04 CN CN201280005825.1A patent/CN103314422B/en active Active
- 2012-01-04 BR BR112013016129A patent/BR112013016129A2/en not_active IP Right Cessation
- 2012-01-04 WO PCT/EP2012/000017 patent/WO2012097958A1/en active Application Filing
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE557982C (en) * | 1930-09-04 | 1932-08-30 | Koch & Sterzel Akt Ges | Control contact device for electrical apparatus, in particular induction devices, with a rolling contact configured in the manner of a gearwheel |
US2231627A (en) * | 1934-04-20 | 1941-02-11 | Jansen Bernhard | Step switch device for regulating transformers |
FR2454167A1 (en) * | 1979-04-12 | 1980-11-07 | Reinhausen Kg Maschf | CONTACT DEVICE FOR SELECTOR IN CHARGE OF STEP-BY-STEP TRANSFORMERS |
DE3207894A1 (en) | 1982-03-05 | 1983-09-15 | Maschinenfabrik Reinhausen Gebrüder Scheubeck GmbH & Co KG, 8400 Regensburg | CONTACT ARRANGEMENT FOR TAPE SWITCHES OF TAPE TRANSFORMERS |
EP0132662A1 (en) * | 1983-07-22 | 1985-02-13 | Transformatoren Union Aktiengesellschaft | Load selector for tapped transformers |
EP0146396A2 (en) * | 1983-12-15 | 1985-06-26 | Mitsubishi Denki Kabushiki Kaisha | Change-over switch for an on-load tap changer |
DE3401297A1 (en) * | 1984-01-16 | 1985-07-18 | Transformatoren Union Ag, 7000 Stuttgart | LOAD SELECTOR FOR STAGE TRANSFORMERS |
DE3407332A1 (en) | 1984-02-29 | 1985-08-29 | Maschinenfabrik Reinhausen Gebrüder Scheubeck GmbH & Co KG, 8400 Regensburg | Load selector for stepping transformers having switching contacts which can be rolled off |
DE19821775C1 (en) | 1998-05-14 | 1999-10-14 | Reinhausen Maschf Scheubeck | Load selector for step transformer |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113539708A (en) * | 2020-04-15 | 2021-10-22 | 天津首瑞智能电气有限公司 | Phase-change switch |
CN113539736A (en) * | 2020-04-15 | 2021-10-22 | 天津首瑞智能电气有限公司 | Switch device |
CN113539736B (en) * | 2020-04-15 | 2023-02-10 | 天津首瑞智能电气有限公司 | Switch device |
Also Published As
Publication number | Publication date |
---|---|
EP2666171A1 (en) | 2013-11-27 |
CN103314422A (en) | 2013-09-18 |
BR112013016129A2 (en) | 2018-07-10 |
CN103314422B (en) | 2016-01-20 |
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