EP0546283B1 - Polungsschalter für Stufenwähler - Google Patents

Polungsschalter für Stufenwähler Download PDF

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Publication number
EP0546283B1
EP0546283B1 EP92117773A EP92117773A EP0546283B1 EP 0546283 B1 EP0546283 B1 EP 0546283B1 EP 92117773 A EP92117773 A EP 92117773A EP 92117773 A EP92117773 A EP 92117773A EP 0546283 B1 EP0546283 B1 EP 0546283B1
Authority
EP
European Patent Office
Prior art keywords
polarity
contact
selector
insulating material
fixed
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
EP92117773A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0546283A3 (en
EP0546283A2 (de
Inventor
Heinrich Dipl.-Ing. Freymüller (FH)
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
Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG
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 EP0546283A2 publication Critical patent/EP0546283A2/de
Publication of EP0546283A3 publication Critical patent/EP0546283A3/de
Application granted granted Critical
Publication of EP0546283B1 publication Critical patent/EP0546283B1/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

Definitions

  • the invention relates to a polarity switch for tap changers of tap changers according to one of the preambles of the independent claims 1 or 2.
  • the step winding of a step transformer is briefly galvanically separated from the main winding during its switchover by a turner or coarse selector. In doing so, it assumes a potential that results from the voltages of the neighboring windings and the coupling capacitances to these windings or to grounded parts.
  • the resulting differential voltages are sometimes quite considerable; they take up the switching distance of the opening preselector contacts and can lead to inadmissible discharge phenomena if the height is sufficient.
  • polarity switches which hold the step winding at a desired and defined potential by means of an ohmic resistor, which is only switched on during the switching phase of the preselector or inverter.
  • Such polarity switches are, as is known from DE-PS 19 42 567, arranged coaxially to the preselection and fine selector contact systems of the tap changer below the tap selector or they are, as is known from DE-PS 28 15 736, on insulating rods attached to additional cantilevers to the side the actual step selector or the selection.
  • a special gear is required which converts the rotary movement of the selector column into a pivoting movement for actuating the polarity switch.
  • the object of the invention is to provide a polarity switch, which can be accommodated in the step selector in a space-saving manner, without significantly influencing its length or scope and without to make a separate gear train necessary for its operation.
  • This object is achieved by a polarity switch with the features of the independent claims 1 or 2.
  • the subclaims contain advantageous developments of the invention.
  • the particular advantage of the polarity switch according to the invention is, in particular, that, due to the approximately horizontal arrangement of the shield ring acting as a movable contact, it only requires a small overall height and is therefore particularly space-saving, particularly advantageous between the selector or turner and fine selector or with a lateral selector or turner can be accommodated below or above the fine selector.
  • the direct actuation of the switching shield ring by means of a groove-like control contour on the drive tube eliminates the need for a separate gearbox on the one hand, and the design or dimensioning of this control contour in a simple manner offers numerous possibilities for adapting the polarity switch to different selector switching angles or different opening and closing speeds and - characteristics by varying the entry angle of the control cam in the control contour.
  • the shield ring which serves as a movable polarity contact, ensures very good voltage properties within the entire tap changer arrangement.
  • the selector here consists of a selector shell 1, for example a GRP pipe or a cylindrical insulating material frame.
  • a selector shell 1 In a first horizontal plane I, the fixed turner or preselector contacts 2 are arranged in the turner shell 1, in a second horizontal plane II there is the polarity switch to be explained in more detail below, and finally, in at least one further horizontal plane III, the fine selector contacts 3 are arranged underneath.
  • concentric drive shafts 4, 5 which connect the respective fixed contacts of the turner or preselector 2 or the fine selector 3 with the respective contact lead, which is also not shown, in a known manner by means of contact bridges or the like, not shown.
  • the Geneva gear mechanism for generating a rotary movement of the drive shaft 4 for actuating the turner or preselector when the fine selector has run through all contacts.
  • the polarity switch according to the invention is located in the horizontal plane II. This essentially consists of a fixed, spring-loaded polarity contact 6 in the turner shell 1, a bearing 7 on the opposite side inside the turner shell 1, which carries a shield ring 8 acting as a movable polarity contact, and a control contour 9 on the drive shaft 5.
  • the fixedly arranged in the turner shell 1 bearing 7 allows in a manner not shown, for. B.
  • the shield ring 8 is guided by a guide arm 10 firmly connected to it, which carries at its free end a guide roller 11 which in turn runs in the control contour 9 and is guided by it.
  • the fixed polarity contact 6 is spring-loaded so that it can be pushed slightly horizontally outwards; outside the turner shell 1, it is connected to a polarity resistor known per se.
  • the shield ring 8 itself is connected either by the directly electrically conductive bearing 7 or additional contact means to an outer connection 12 which is articulated to the star point or, in the case of turrets, to the 0 contact of the tap changer.
  • Fig. 2a shows the development of a control contour 9 in detail for a selector with 2 x 360 ° rotary movement of the drive shaft 5, ie a fine selector, in which the preselector is actuated after each full rotation of the drive shaft 5 shall be.
  • the control contour 9 has an upward bulge; it carries the guide roller 11 of the guide arm 10 and thus pivots the shield ring 8 with its free end upward, so that it meets the fixed polarity contact 6 with it.
  • the shield ring 8 - as can be seen - leaves the fixed polarity contact 6 again at the switch-off point 9.2 and is pivoted downward.
  • the choice of the respective control contour 9 makes it possible in a simple manner to adapt the switching behavior of the polarity switch to the respective angle of rotation of the drive shaft 5 of the fine selector and the swivel angle between the turner or preselector contacts 2.
  • the dimensioning of the distance between switch-on point 9.1 and switch-off point 9.2 adapts to the switching time of the preselector. When the direction of rotation of the fine selector is reversed, switch-on point 9.1 and switch-off point 9.2 are swapped accordingly.
  • the shield ring 8 is held in the closed contact state by the fixed polarity contact 6; for this purpose, it is expedient to move the pivot point 7.2 horizontally relative to the plane of the fixed polarity contact 6 and / or to design the control contour 9 so that the shield ring 8 rests at the upper end of the fixed polarity contact 6 in the switched, ie fully deflected state, and is held by this.
  • the spring force of the polarity contact 6 must first be overcome, ie it must be pressed slightly outwards.
  • the control contour 9 is advantageously realized by an annular component which supports it on the end face and is firmly connected to the drive shaft 5, but it is also conceivable to provide the control contour 9 on or in the drive shaft 5 itself.
  • control contour 9 on the drive shaft of the turner or preselector 4, in which case, if this drive shaft 4 does not describe a complete rotation of 360 °, the control contour 9 also only extends over part of the development becomes.
  • the guide arm 10 is designed to be vertically resilient, so that even in the case of a rigid, unsprung polarity contact 6, the required contact pressure is ensured when the shield ring 8 comes up on the underside of the polarity contact 6.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Keying Circuit Devices (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Circuit Breakers (AREA)
  • Electronic Switches (AREA)
  • Breakers (AREA)
  • Stereo-Broadcasting Methods (AREA)
EP92117773A 1991-12-13 1992-10-17 Polungsschalter für Stufenwähler Expired - Lifetime EP0546283B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4141142 1991-12-13
DE4141142A DE4141142C1 (sv) 1991-12-13 1991-12-13

Publications (3)

Publication Number Publication Date
EP0546283A2 EP0546283A2 (de) 1993-06-16
EP0546283A3 EP0546283A3 (en) 1993-06-30
EP0546283B1 true EP0546283B1 (de) 1994-12-07

Family

ID=6446980

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92117773A Expired - Lifetime EP0546283B1 (de) 1991-12-13 1992-10-17 Polungsschalter für Stufenwähler

Country Status (9)

Country Link
US (1) US5315078A (sv)
EP (1) EP0546283B1 (sv)
JP (1) JP3424947B2 (sv)
AT (1) ATE115327T1 (sv)
BG (1) BG60735B1 (sv)
CA (1) CA2085029C (sv)
DE (2) DE4141142C1 (sv)
HU (2) HU209220B (sv)
RO (1) RO113093B1 (sv)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19542880C1 (de) * 1995-11-17 1997-02-20 Reinhausen Maschf Scheubeck Fester Polungskontakt für Stufenschalter
DE10312176B3 (de) * 2003-03-19 2004-06-09 Maschinenfabrik Reinhausen Gmbh Lastumschalter für einen Stufenschalter
DE102005027524B3 (de) * 2005-06-15 2006-10-12 Maschinenfabrik Reinhausen Gmbh Kraftspeicher
JP4660313B2 (ja) * 2005-08-02 2011-03-30 株式会社東芝 モールドコイルのタップ切換器
WO2010078292A1 (en) * 2008-12-29 2010-07-08 Abb Technology Ag An improved reversing switch and a method of retrofitting
DE102009025358B4 (de) 2009-06-18 2013-06-20 Maschinenfabrik Reinhausen Gmbh Stufenschalter mit einem Vorwähler
CN106935425B (zh) * 2017-03-24 2018-09-07 西安森宝电气工程有限公司 一种与有载分接开关配套的极性转换器
EP3996124A1 (en) * 2020-11-06 2022-05-11 ABB PG Power Grids Ltd Transformer comprising a load break rotary switch

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1103434B (de) * 1960-03-02 1961-03-30 Licentia Gmbh Hochspannungs-Leistungsschalter mit in Reihe liegendem, angebautem Spannungstrenner
AT299393B (de) * 1969-08-21 1972-06-12 Reinhausen Maschf Scheubeck Schaltanordnung für Stufenschalter von Drehstromtransformatoren
DE2548408C3 (de) * 1975-10-29 1979-05-31 Maschinenfabrik Reinhausen Gebrueder Scheubeck Gmbh & Co Kg, 8400 Regensburg Aus Lastumschalter, Stufenwähler und Vorwähler bestehender Stufenschalter für Stufentransformatoren
SE402502B (sv) * 1976-10-29 1978-07-03 Asea Ab Lindningskopplare
US4174529A (en) * 1978-04-10 1979-11-13 General Electric Company Protective circuit for zinc oxide varistors
DE2815736C2 (de) * 1978-04-12 1980-05-29 Maschinenfabrik Reinhausen Gebrueder Scheubeck Gmbh & Co Kg, 8400 Regensburg Stufenschalter mit Polungskontakten für Stufentransformatoren
GB2077503B (en) * 1980-05-19 1984-10-03 Associated Tapechangers Ltd Tap changer for a transformer
AT386091B (de) * 1986-07-02 1988-06-27 Elin Union Ag Schaltanordnung fuer den wenderschalter eines stufenschalters fuer transformatoren
DE3829489C2 (de) * 1988-08-31 1993-11-18 Reinhausen Maschf Scheubeck Zylindrischer Stufenwähler für Stufentransformatoren
DE4011019C1 (sv) * 1990-04-05 1991-12-05 Maschinenfabrik Reinhausen Gmbh, 8400 Regensburg, De
DE4034126C1 (sv) * 1990-10-26 1992-03-05 Maschinenfabrik Reinhausen Gmbh, 8400 Regensburg, De

Also Published As

Publication number Publication date
CA2085029A1 (en) 1993-06-14
RO113093B1 (ro) 1998-03-30
CA2085029C (en) 2002-10-29
JP3424947B2 (ja) 2003-07-07
DE59200914D1 (de) 1995-01-19
US5315078A (en) 1994-05-24
EP0546283A3 (en) 1993-06-30
DE4141142C1 (sv) 1993-04-08
HU209220B (en) 1994-03-28
EP0546283A2 (de) 1993-06-16
HUT63014A (en) 1993-06-28
JPH05267076A (ja) 1993-10-15
ATE115327T1 (de) 1994-12-15
BG60735B1 (bg) 1996-01-31
HU9203811D0 (en) 1993-03-29
BG97164A (bg) 1994-03-24

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