EP0543120B1 - Kontaktanordnung. - Google Patents

Kontaktanordnung. Download PDF

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Publication number
EP0543120B1
EP0543120B1 EP92116700A EP92116700A EP0543120B1 EP 0543120 B1 EP0543120 B1 EP 0543120B1 EP 92116700 A EP92116700 A EP 92116700A EP 92116700 A EP92116700 A EP 92116700A EP 0543120 B1 EP0543120 B1 EP 0543120B1
Authority
EP
European Patent Office
Prior art keywords
contact arrangement
contact
arrangement according
insulating material
locking means
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 - Lifetime
Application number
EP92116700A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0543120A3 (en
EP0543120A2 (de
Inventor
Dieter Dr.-Ing. Dohnal
Leonhard Pillmeier
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
Publication of EP0543120A2 publication Critical patent/EP0543120A2/de
Publication of EP0543120A3 publication Critical patent/EP0543120A3/de
Application granted granted Critical
Publication of EP0543120B1 publication Critical patent/EP0543120B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/06—Fixing of contacts to carrier ; Fixing of contacts to insulating carrier
    • 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 invention relates to a contact arrangement for step selectors of step transformers according to the preamble of the first claim.
  • the invention further relates to a shaped spring for locking such contact arrangements.
  • the contact piece is fixed in the cylinder wall by permanent deformation of its shaft on the outer side of the cylinder wall.
  • This permanent deformation is generated by widening bores in the shaft, as known from DE-C-38 01 151, or by upsetting the shaft from the outside, as known from DE-U-90 10 730.
  • such a contact attachment has the disadvantage that a surface pressure of the deformed shaft on the underlying insulating sleeve occurs practically only at a few points, so that a firm contact attachment cannot be reliably achieved, especially since the insulating sleeve "flows" selectively , ie give in locally under the influence of high surface pressure.
  • the object of the invention is therefore to provide a contact arrangement in which By means of an elastic fastening realized over a large area with a correspondingly low surface pressure, which is under a certain pretension, a permanent contact fastening is possible even with shrinkage or tolerance of the insulating material parts, and a simple, non-destructive dismantling of the entire contact arrangement is possible.
  • the sub-claims 2 to 7 contain particularly advantageous developments of the contact arrangement according to the invention; the sub-claims 8 to 10 contain a shaped spring which is particularly suitable for permanent attachment of the contact arrangement according to the invention.
  • the shaft of the contact piece is fastened by means of a cross bolt, in that it is braced by rotation on an incline and thus the entire contact arrangement, which is already fixed on the inside of the cylinder wall by the bulge-like thickening of its contact contour, is non-positively fastened.
  • this slope which acts as a locking means
  • the attachment is possible by simply turning the contact; no special tools are required.
  • the assembly is thus much easier to carry out than the conventional upsetting of the contact shaft according to the prior art, which requires a special upsetting tool on the outside and a special counter-holder inside the insulating cylinder.
  • a non-destructive disassembly of the entire contact arrangement is possible by simply turning it in the opposite direction; the advantages are obvious.
  • Another very important advantage of the invention is that a circular, uniform surface pressure is achieved by the locking means acting directly on the insulating material bushing that forms the transverse insulation is, which prevents a "flow" of the insulating material and ensures a tight fit of the entire contact arrangement.
  • the shaped spring according to the invention which is particularly suitable for this fastening, with its asymmetrical recess also offers the advantage of constant pretensioning, as a result of which a good and durable fastening is achieved even after the insulating cylinder has possibly shrunk or after strong vibrations.
  • the pitch according to the invention can be achieved in the simplest way with such a plate-like shaped spring by simply punching out the recess. With such a form spring, slightly recessed locking points on the slope are advantageous, which ensure a fixed and defined rest position of the cross bolt in the stable state.
  • the contact piece 1 fastened in the wall of an insulating material cylinder 2 consists of the bead-like thickened contact contour 1.1 inside, the round shaft 1.2 and the outer end 1.3 forming a connecting surface.
  • the cross insulation consists of a two-part insulating sleeve 3.1, 3.2, which is plugged together, the contact contour 1.1 being tight against the inner insulating sleeve 3.1.
  • the outer insulating sleeve 3.2. has on its outer end face a slope 4.1 repeating in the same direction over half the circumference. on. This is shown schematically by the handling of this scope in FIG. 1. Outside the outer insulating material sleeve 3.2.
  • a further insulating material bushing 4 is plugged onto the shaft 1.2, which has the same slope 4.1 on its inner side. having. With relative rotation of the insulation bushings 3.2. and 4 the corresponding slopes 4.1 slide towards one another, shift the further insulating material bushing 4 in the longitudinal axis of the shaft 1.2 to the outside and thus cause the transverse bolt 5 to be braced on the outside of the further insulating material bushing 4, to which a shield or the like is additionally fastened can. It is also possible, and in practice often easier, to simply omit the further insulating material bushing 4, so that the transverse bolt 5 braces itself on the slope 4.1 on the outer end face of the outer insulating material bushing 3.2 when the entire contact piece rotates.
  • this slope 4.1 can be provided with a detent 4.2, as is also shown by the above-mentioned development of the circumference.
  • the cross bolt 5 also latches directly in a different way with gradients, which can be designed in different ways, as will be explained in more detail.
  • Fig. 2 shows a further embodiment of the contact arrangement, with an otherwise identical structure instead of an additional insulating sleeve, an annular shield 6 is pushed onto the shaft 1.2, which has an inner edge 6.1, which in turn has the slope 6.2. A stable rest position of the cross pin 5 can be easily achieved by depressions on the slope 6.2, not shown.
  • FIG. 3 shows a further contact arrangement in which a form spring 7 acts as a locking means with a slope 7.2.
  • a form spring 7 acts as a locking means with a slope 7.2.
  • FIG. 4a and 4b finally show this form spring 7 itself.
  • the plate-shaped spring 7 is curved in itself, consists of spring steel and has an inner recess 7.1.
  • This recess 7.1 is not rotationally symmetrical and designed in such a way that the width of the remaining arched material increases continuously over an angle of rotation of approximately 180 degrees, then the course is repeated.
  • the edge 7.2 which comprises the recess 7.1, thus has the desired slope.
  • the recess 7.1 is expanded by additional notches 7.3, 7.4, such that the clear width between the notches 7.3, 7.4 is somewhat larger than the length of the transverse bolt 5 or the width of the outer end 1.3 of the contact piece 1, so that the form spring 7 can be pushed onto the shaft 1.2 in this position.

Landscapes

  • Manufacturing & Machinery (AREA)
  • Engineering & Computer Science (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Springs (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Insulating Bodies (AREA)
  • Inert Electrodes (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Insulators (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Measuring Leads Or Probes (AREA)
EP92116700A 1991-11-19 1992-09-30 Kontaktanordnung. Expired - Lifetime EP0543120B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4138000A DE4138000C1 (enrdf_load_stackoverflow) 1991-11-19 1991-11-19
DE4138000 1991-11-19

Publications (3)

Publication Number Publication Date
EP0543120A2 EP0543120A2 (de) 1993-05-26
EP0543120A3 EP0543120A3 (en) 1993-06-30
EP0543120B1 true EP0543120B1 (de) 1995-04-05

Family

ID=6445114

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92116700A Expired - Lifetime EP0543120B1 (de) 1991-11-19 1992-09-30 Kontaktanordnung.

Country Status (9)

Country Link
US (1) US5374781A (enrdf_load_stackoverflow)
EP (1) EP0543120B1 (enrdf_load_stackoverflow)
JP (1) JPH05226167A (enrdf_load_stackoverflow)
AT (1) ATE120877T1 (enrdf_load_stackoverflow)
BG (1) BG60736B1 (enrdf_load_stackoverflow)
CA (1) CA2083096A1 (enrdf_load_stackoverflow)
DE (2) DE4138000C1 (enrdf_load_stackoverflow)
HU (2) HU210886B (enrdf_load_stackoverflow)
RO (1) RO110880B1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110323092A (zh) * 2019-06-10 2019-10-11 平高集团有限公司 一种动弧触头装卸工装

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19744465C1 (de) * 1997-10-08 1999-03-11 Reinhausen Maschf Scheubeck Verfahren zur Überwachung eines Stufenschalters
DE19746574C1 (de) * 1997-10-22 1999-02-04 Reinhausen Maschf Scheubeck Verfahren zur Funktionsüberwachung von Stufenschaltern
DE102004041317B3 (de) 2004-08-26 2005-10-20 Reinhausen Maschf Scheubeck Kontaktanordnung
ITVI20070199A1 (it) * 2007-07-16 2009-01-17 Comem Spa Dispositivo di connessione amovibile per commutatori a vuoto per trasformatori elettrici.
WO2011079860A1 (en) * 2009-12-29 2011-07-07 Abb Technology Ltd A contact unit for a high-voltage device
EP2637186B1 (en) * 2012-03-07 2014-09-17 ABB Technology Ltd A tap selector and a method for assembling a tap selector
EP3086342A1 (en) 2015-04-21 2016-10-26 ABB Technology Ltd A fixed contact for a tap changer and a method for mounting a cable lug thereto
CN110176370B (zh) * 2019-06-04 2020-11-13 上海华明电力设备制造有限公司 一种鼓型无励磁分接开关档位显示装置

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7121024U (de) * 1971-05-29 1971-08-26 Gebrueder Scheubeck Kg Kontaktanordnung fuer stufenschalter von regeltransformatoren
FR2228308A1 (en) * 1973-05-03 1974-11-29 Gerardin Maurice Demountable stator contacts for transformer switches - allows easy replacement of contacts and connection of wiring, using bayonet couplings
US4025714A (en) * 1975-04-04 1977-05-24 Electrical Utilities Company Self-locking terminal assembly
US3975579A (en) * 1975-12-03 1976-08-17 The United States Of America As Represented By The Secretary Of The Navy Conical face-seal for an electrical feedthrough
US4031311A (en) * 1976-03-15 1977-06-21 Westinghouse Electric Corporation Electrical bushing
US4120555A (en) * 1977-04-04 1978-10-17 Eltra Corporation Connector-terminal assembly for electrical conductors
DE8229692U1 (de) * 1982-10-22 1984-03-29 Maschinenfabrik Reinhausen Gebrüder Scheubeck GmbH & Co KG, 8400 Regensburg Kontaktstueck fuer stufenschalter von stufentransformatoren
DE3313741A1 (de) * 1983-04-15 1984-10-18 Transformatoren Union Ag, 7000 Stuttgart Festkontakt zur anordnung in der wand von isolierzylindern von lastwaehlern fuer transformatoren
DE3801151A1 (de) * 1988-01-16 1989-07-27 Reinhausen Maschf Scheubeck Verfahren zum befestigen eines in einer isolierstoffwand sitzenden kontaktstueckes
DE3801152A1 (de) * 1988-01-16 1989-07-27 Reinhausen Maschf Scheubeck In einer isolierstoffwand sitzende kontaktanordnung fuer stufenwaehler von stufentransformatoren
DE3936420A1 (de) * 1989-11-02 1991-05-08 Reinhausen Maschf Scheubeck Kontaktanordnung mit abschirmung fuer stufenschalter von stufentransformatoren
DE9010730U1 (de) * 1990-07-18 1991-08-14 Maschinenfabrik Reinhausen Gmbh, 93059 Regensburg Kontaktanordnung
US5272280A (en) * 1991-06-13 1993-12-21 Northern Telecom Limited Overvoltage protector assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110323092A (zh) * 2019-06-10 2019-10-11 平高集团有限公司 一种动弧触头装卸工装
CN110323092B (zh) * 2019-06-10 2020-12-11 平高集团有限公司 一种动弧触头装卸工装

Also Published As

Publication number Publication date
DE59201837D1 (de) 1995-05-11
BG97086A (bg) 1994-03-24
EP0543120A3 (en) 1993-06-30
BG60736B1 (bg) 1996-01-31
US5374781A (en) 1994-12-20
HU9203540D0 (en) 1993-03-29
JPH05226167A (ja) 1993-09-03
HU210886B (en) 1995-09-28
EP0543120A2 (de) 1993-05-26
CA2083096A1 (en) 1993-05-20
DE4138000C1 (enrdf_load_stackoverflow) 1993-03-04
HUT62725A (en) 1993-05-28
ATE120877T1 (de) 1995-04-15
RO110880B1 (ro) 1996-04-30

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