EP0371376A2 - Sélecteur de gradins pour transformateurs à gradins avec arbres de commande concentriques - Google Patents

Sélecteur de gradins pour transformateurs à gradins avec arbres de commande concentriques Download PDF

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Publication number
EP0371376A2
EP0371376A2 EP89121511A EP89121511A EP0371376A2 EP 0371376 A2 EP0371376 A2 EP 0371376A2 EP 89121511 A EP89121511 A EP 89121511A EP 89121511 A EP89121511 A EP 89121511A EP 0371376 A2 EP0371376 A2 EP 0371376A2
Authority
EP
European Patent Office
Prior art keywords
drive shaft
contact
actuating shaft
guided
selector
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
Application number
EP89121511A
Other languages
German (de)
English (en)
Other versions
EP0371376A3 (fr
EP0371376B1 (fr
Inventor
Alexander Bleibtreu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinenfabrik Reinhausen GmbH
Scheubeck GmbH and Co
Original Assignee
Maschinenfabrik Reinhausen GmbH
Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Reinhausen GmbH, Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG filed Critical Maschinenfabrik Reinhausen GmbH
Priority to AT89121511T priority Critical patent/ATE104469T1/de
Publication of EP0371376A2 publication Critical patent/EP0371376A2/fr
Publication of EP0371376A3 publication Critical patent/EP0371376A3/fr
Application granted granted Critical
Publication of EP0371376B1 publication Critical patent/EP0371376B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00—Variable inductances or transformers of the signal type
    • H01F21/12—Variable inductances or transformers of the signal type discontinuously variable, e.g. tapped
    • 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

Definitions

  • the invention relates to a cylindrical step selector for step transformers, as it is referred to in the preamble of the claim.
  • Such step selectors are known: CH-PS 395 243.
  • this step selector leads to a certain inconsistency in various components of the step selector, depending on whether these components are assigned to the outer or the inner drive shaft.
  • the contact rings surrounding the outer drive shaft must e.g. have a larger diameter than the contact rings which enclose the inner drive shaft, since the inner drive shaft usually also has a smaller diameter in its exposed part.
  • the guidance of the contact bridges also varies depending on whether the guidance has to be carried out by the outer drive shaft with the larger diameter or by the inner drive shaft with the smaller diameter. Since the affected tap changer is now required in a large number of variants, efforts are being made to produce these variants from the smallest possible number of uniform individual parts using the modular principle. It is clear that the known design does not fully meet these requirements. It is therefore an object of the invention to improve the step selector mentioned in such a way that the number of different individual parts required is reduced.
  • the advantage achieved with the invention lies essentially in the fact that uniform contact rings and uniform guides of the movable contact bridges can now be used for the required variants of the step selector, regardless of whether these are assigned to the outer or the inner drive shaft.
  • FIG. 1 shows a schematic representation of a longitudinal section of the new tap selector.
  • the new step selector has a cylindrical housing 1, which is provided with a gear 2 at the top and a bearing plate 3 at the bottom.
  • the housing 1 carries in a plurality of levels I, II ... VI arranged one below the other in a circular manner in the cylinder wall fixed step contacts 4.
  • Each level I to VI is assigned a movable contact bridge 5, which creates a connection with a slip ring 6 each.
  • Two concentric drive shafts 7, 8 extend axially in the middle of the cylinder within the slip rings 6 and can be actuated alternately by the transmission 2.
  • a drive shaft 7, the outer one extends approximately to the middle of the cylindrical housing 1. It extends over the three upper contact planes I, II, III and is provided with three drivers 9 for the contact bridges 5.
  • the three contact rings 6 of levels I, II, III are loosely arranged around the drive shaft and essentially fixed by the connecting lines 10, with which they are firmly connected.
  • the inner drive shaft 8 extends within the described outer drive shaft 7, which then extends even further, to the lower end plate 3 of the cylindrical housing 1, where it is mounted in the bearing 11.
  • this drive shaft 8 as soon as it has left the outer drive shaft 7, is expanded to exactly the same diameter as the outer drive shaft 7, and this expanded part of the inner one Analogously to the outer drive shaft, drive shaft 8 also extends over three contact planes IV to VI arranged one below the other. It is readily apparent that the contact rings 6 and driver 9 of the contact bridges 5 assigned to this part of the drive shaft correspond in their structural design with the parts as they are assigned to the outer drive shaft 7.
  • the inner drive shaft 8 is mounted in a bearing 11 of the bearing plate 3.
  • the outer drive shaft 7, however, is guided by means of a plurality of plastic blocks 12, which are arranged at the lower end of the outer drive shaft 7 between the outer and the inner drive shaft.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transmission Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Multiple-Way Valves (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Gear Transmission (AREA)
EP89121511A 1988-12-01 1989-11-21 Sélecteur de gradins pour transformateurs à gradins avec arbres de commande concentriques Expired - Lifetime EP0371376B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89121511T ATE104469T1 (de) 1988-12-01 1989-11-21 Stufenwaehler fuer stufentransformatoren mit konzentrischen antriebswellen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3840529A DE3840529A1 (de) 1988-12-01 1988-12-01 Stufenwaehler fuer stufentransformatoren mit konzentrischen antriebswellen
DE3840529 1988-12-01

Publications (3)

Publication Number Publication Date
EP0371376A2 true EP0371376A2 (fr) 1990-06-06
EP0371376A3 EP0371376A3 (fr) 1991-08-14
EP0371376B1 EP0371376B1 (fr) 1994-04-13

Family

ID=6368261

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89121511A Expired - Lifetime EP0371376B1 (fr) 1988-12-01 1989-11-21 Sélecteur de gradins pour transformateurs à gradins avec arbres de commande concentriques

Country Status (6)

Country Link
EP (1) EP0371376B1 (fr)
JP (1) JPH02189907A (fr)
KR (1) KR910010546A (fr)
AT (1) ATE104469T1 (fr)
DE (2) DE3840529A1 (fr)
HU (1) HU206167B (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE508909C (de) * 1928-05-10 1930-10-03 Siemens Schuckertwerke Akt Ges Stufentransformator, desen Spannung unter Last geregelt werden soll
US2820953A (en) * 1954-08-24 1958-01-21 Gen Electric Transformer tap changer mechanism
FR1354578A (fr) * 1962-04-19 1964-03-06 Bbc Brown Boveri & Cie Système de commutation à prises de réglage
US3783206A (en) * 1972-07-06 1974-01-01 Westinghouse Electric Corp Tap changing apparatus with improved contact structure to eliminate electrical fields across open interrupter switches

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE631167A (fr) * 1962-04-19
DE3310741A1 (de) * 1983-03-24 1984-09-27 Transformatoren Union Ag, 7000 Stuttgart Lastwaehler zum schalten von stufenwicklungen eines dreiphasen-transformators

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE508909C (de) * 1928-05-10 1930-10-03 Siemens Schuckertwerke Akt Ges Stufentransformator, desen Spannung unter Last geregelt werden soll
US2820953A (en) * 1954-08-24 1958-01-21 Gen Electric Transformer tap changer mechanism
FR1354578A (fr) * 1962-04-19 1964-03-06 Bbc Brown Boveri & Cie Système de commutation à prises de réglage
US3783206A (en) * 1972-07-06 1974-01-01 Westinghouse Electric Corp Tap changing apparatus with improved contact structure to eliminate electrical fields across open interrupter switches

Also Published As

Publication number Publication date
HUT52272A (en) 1990-06-28
ATE104469T1 (de) 1994-04-15
DE58907457D1 (de) 1994-05-19
EP0371376A3 (fr) 1991-08-14
EP0371376B1 (fr) 1994-04-13
HU206167B (en) 1992-08-28
JPH02189907A (ja) 1990-07-25
DE3840529C2 (fr) 1991-01-17
DE3840529A1 (de) 1990-06-07
KR910010546A (ko) 1991-06-29
HU896221D0 (en) 1990-02-28

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