EP0088296B1 - Kontaktanordnung für Stufenschalter von Stufentransformatoren - Google Patents

Kontaktanordnung für Stufenschalter von Stufentransformatoren Download PDF

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Publication number
EP0088296B1
EP0088296B1 EP83101804A EP83101804A EP0088296B1 EP 0088296 B1 EP0088296 B1 EP 0088296B1 EP 83101804 A EP83101804 A EP 83101804A EP 83101804 A EP83101804 A EP 83101804A EP 0088296 B1 EP0088296 B1 EP 0088296B1
Authority
EP
European Patent Office
Prior art keywords
contact
steel core
circular arcs
contacts
contact bridge
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.)
Expired
Application number
EP83101804A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0088296A1 (de
Inventor
Dieter Dr.-Ing. Dohnal
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 Gebr SCHEUBECK & Co KG GmbH
Maschinenfabrik Reinhausen GmbH
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 Gebr SCHEUBECK & Co KG GmbH, Maschinenfabrik Reinhausen GmbH filed Critical MASCHINENFABRIK REINHAUSEN Gebr SCHEUBECK & Co KG GmbH
Publication of EP0088296A1 publication Critical patent/EP0088296A1/de
Application granted granted Critical
Publication of EP0088296B1 publication Critical patent/EP0088296B1/de
Expired 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
    • H01F27/00—Details of transformers or inductances, in general
    • 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

Definitions

  • the invention relates to a contact arrangement for tap changers of tap transformers, as is specified in the preamble of claim 1.
  • Such contact arrangements are known: DE-A-29 10 161.
  • contact bridge connects a single step contact with the load conductor.
  • the contact bridge is actuated here by means of a contact bridge support made of insulating material, in which it is mounted and which is carried along by an insulating tube which can be rotated in steps in the middle of the cylinder.
  • the springs generating the contact pressure are located between the contact bridge carrier containing the bearing points for the contact bridge and an abutment.
  • a difficulty with such contact arrangements is that the two rolling tracks on the cylinder wall never run exactly parallel and that the rolling circumference of the two tracks can never exactly match, especially since one rolling track contains a large number of individual contacts, while the other rolling track is designed as a continuous contact track .
  • the arrangement of individual contacts inevitably leads to unevenness in the rolling path.
  • the contact bridge must therefore adapt to these unevenness in the rolling path of the individual contacts in each switching step, with a torque being transmitted from the contact roller rolling on the continuous contact path to the other contact roller in individual movement sections. This leads - even if only to a small extent - to constant mechanical stress on the flexible line by alternately expanding and screwing it back in. This sometimes leads to tearing of individual conductors of the flexible line, which begins with multilayer flexible lines in the outer layer in the immediate vicinity of the mounting point and can even lead to the complete breakage of the flexible line in the end.
  • the object of the invention is to improve the contact arrangement mentioned at the outset and, in particular, to make the flexible line between the two contact rollers mechanically more resistant.
  • This object is achieved by the means specified in the characterizing part of claim 1.
  • the advantage achieved by the invention is, in particular, that the contact rollers can individually and individually adapt to the irregularities of the rolling curves, so that their individual mobility is essentially retained, without causing significant mechanical stress on the flexible line.
  • the steel core is useful as a flexible shaft, for. B. in the manner of a tachometer shaft, which consists of at least two oppositely wound layers of spring steel wire.
  • FIG. 1 An embodiment of the invention is shown in the accompanying drawing, which shows the detail of a cylindrical oil vessel of a load selector in FIG. 1, and is described in more detail below.
  • each step contact 2 or 3 can optionally be connected to the load conductor, that is to say to the contact track 6.
  • the contact bridge 7 has an upper and a lower contact roller 8 and 9, both of which are mounted in an arm 10, 11 of a contact bridge support made of insulating material, not shown in detail, and which are electrically conductively connected to one another via a flexible line 12.
  • a steel core 14 is located centrally in the flexible line 12 and is firmly connected to both contact rollers 8, 9.
  • the two arms 10, 11 of the contact bridge support, not shown, are movable relative to each other.
  • the contact pressure springs, also not shown, act on these arms 11 and 12 in the usual way.
  • the contact bridge support is - which is also not shown in detail - moved in a known manner by means of a drive tube mounted in the interior of the oil vessel, so that - as already mentioned - either a fixed step contact 2 or 3 with the contact track 6, which forms the load derivative, as desired , can be connected.
  • Bevels 13 For better rolling or rolling of the contact roller 8 on or from the contact surfaces 5 of the fixed step contacts 2, 3, these are with Bevels 13 provided.
  • the contact bridge 7 can easily adapt to the inevitable bumps, in particular in the rolling path containing the individual step contacts 2, 3, since each contact roll 8, 9 is guided individually in the arm 10 or 11 of the contact bridge carrier and since both contact rolls 8 , 9 are also mutually movable due to the flexible line 12 and the resilient steel core 14.
  • the contact bridge cannot be tilted practically, because each contact roller 8, 9 can individually adapt to its respective runway 1, 5, 13 or 6.
  • there can also be no significant difference in the rotational speeds of the two contact rollers 8, 9 - which would result in a widening or twisting of the flexible line 12 - because the steel core transmits torque from one contact roller, e.g. B. 9, on the other contact role, for. B. 8, can be done.
  • the steel core 14 is firmly connected at its end 141 together with the end 121 of the flexible line to the respective contact roller 8 or 9.
  • the steel core is expediently designed in the manner of a tachometer shaft, which consists of at least two layers 143, 144 of spring steel wire wound in opposite directions, see FIG. 2, which shows sections of a steel core in enlarged form.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Contacts (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
EP83101804A 1982-03-05 1983-02-24 Kontaktanordnung für Stufenschalter von Stufentransformatoren Expired EP0088296B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3207894 1982-03-05
DE3207894A DE3207894C2 (de) 1982-03-05 1982-03-05 Kontaktanordnung für Stufenschalter von Stufentransformatoren

Publications (2)

Publication Number Publication Date
EP0088296A1 EP0088296A1 (de) 1983-09-14
EP0088296B1 true EP0088296B1 (de) 1985-08-28

Family

ID=6157369

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83101804A Expired EP0088296B1 (de) 1982-03-05 1983-02-24 Kontaktanordnung für Stufenschalter von Stufentransformatoren

Country Status (6)

Country Link
EP (1) EP0088296B1 (enrdf_load_stackoverflow)
JP (1) JPS58162010A (enrdf_load_stackoverflow)
KR (1) KR870001109Y1 (enrdf_load_stackoverflow)
DE (1) DE3207894C2 (enrdf_load_stackoverflow)
ES (1) ES8401672A1 (enrdf_load_stackoverflow)
IN (1) IN158930B (enrdf_load_stackoverflow)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0646612B2 (ja) * 1984-06-11 1994-06-15 三菱電機株式会社 タツプ切換器の転換器
DE3630464A1 (de) * 1986-09-06 1988-03-10 Reinhausen Maschf Scheubeck Kontaktanordnung fuer lastwaehler von stufentransformatoren
JPH0713206Y2 (ja) * 1987-01-14 1995-03-29 株式会社明電舎 タップ選択器
WO2003032345A1 (en) * 2001-10-10 2003-04-17 Sonionmicrotronic A/S A multifunctional switch
WO2011079860A1 (en) * 2009-12-29 2011-07-07 Abb Technology Ltd A contact unit for a high-voltage device
EP2666171A1 (de) 2011-01-20 2013-11-27 Maschinenfabrik Reinhausen GmbH Stufenschalter
DE202011109824U1 (de) 2011-01-20 2012-04-03 Maschinenfabrik Reinhausen Gmbh Stufenschalter
EP2959493B1 (en) 2013-02-20 2017-04-12 ABB Schweiz AG Tap changer contact system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT169512B (de) * 1949-09-26 1951-11-26 Felten & Guilleaume Carlswerk Elektrischer Leiter für Hochspannungsfreileitungen
DE1881565U (de) * 1963-08-10 1963-10-31 Rheinische Draht Und Kabelwerk Kabel fuer die zugsteuerung.
HU175895B (en) * 1977-08-19 1980-11-28 December 4 Drotmuevek Steel-cored aluminium cable, mainly for carriying electric power and method to make such a cable
US4185473A (en) * 1978-06-21 1980-01-29 Pennwalt Corporation Balanced torsional deflection of flexible shafts in either direction of rotation
DE2910161A1 (de) * 1979-03-15 1980-09-18 Reinhausen Maschf Scheubeck Kontaktanordnung fuer stufenschalter von stufentransformatoren

Also Published As

Publication number Publication date
DE3207894C2 (de) 1986-03-13
KR870001109Y1 (ko) 1987-03-23
ES520311A0 (es) 1983-12-01
KR840004210U (ko) 1984-08-25
JPH0259605B2 (enrdf_load_stackoverflow) 1990-12-13
DE3207894A1 (de) 1983-09-15
IN158930B (enrdf_load_stackoverflow) 1987-02-21
ES8401672A1 (es) 1983-12-01
EP0088296A1 (de) 1983-09-14
JPS58162010A (ja) 1983-09-26

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