US3551628A - High voltage switching device - Google Patents

High voltage switching device Download PDF

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Publication number
US3551628A
US3551628A US812078A US3551628DA US3551628A US 3551628 A US3551628 A US 3551628A US 812078 A US812078 A US 812078A US 3551628D A US3551628D A US 3551628DA US 3551628 A US3551628 A US 3551628A
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US
United States
Prior art keywords
contact
shielding member
rod
closing member
switching device
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
US812078A
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English (en)
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.)
Scheubeck GmbH and Co
Original Assignee
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 Gebrueder Scheubeck GmbH and Co KG filed Critical Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG
Application granted granted Critical
Publication of US3551628A publication Critical patent/US3551628A/en
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
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/44—Contacts characterised by the manner in which co-operating contacts engage by sliding with resilient mounting
    • 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

  • Cl 200/166, cluding fixed contact means and a rnovalile contact bridge 200/1 1,200/170 for conductively interconnecting said fixed contact means is [SI] Int.Cl HOlh 1/22, provided with means for effectively controlling the electric HOln l /50 field established between separated contacts.
  • IHVELTOP HIGH VOLTAGE SWITCHING DEVICE BACKGROUND OF INVENTION switches often include a fixed radially inner circular or annular contact, a contact bridge pivotable about the center of said circular or annular contact'and having a radially inner contact surface in permanent engagement with said circular or annular contact, and a plurality of fixed radially outer contacts arranged in a circular concentric pattern around said circular or annular contact and selectively engageable by a radially outer contact surface of said contact bridge.
  • each of said plurality of fixed radially outer contacts not engaged by the radially outer contact surface of the contact bridge is normally within a high voltage electric field.
  • the dielectric strength of the gap formed between the radially inner circular or annular contact and said plurality of radially outer contacts depends upon the configuration of the latter, and upon the spacing between the former and the latter. In the interest of compactness this spacing ought to be minimized.
  • a high voltage switching device includes fixed contacts and a movable contact bridge for conductively interconnecting pairs of said fixed contacts.
  • Some of said fixed contacts include a contact rod, a substantially cupshaped shielding member arranged in coaxial relation to said contact rod and enveloping a portion of the length thereof, said shielding member defining a circular opening through which said contact rod projects from the inside of said shielding member to the outside thereof, a closing member for said shielding member having substantially the shape of a spherical cap arranged in coaxial relation to said shielding member and having an outer diameter slightly less than the diameter of said circular opening of said shielding member, and spring means interposed between said shielding member and said closing member biasing said closing member'in a direction longitudinally of said rod contact away from said shielding member.
  • FIG. I is in part a side elevation and in part a vertical section along H of FIG. 2 and shows a fixed contact according to this invention and means for securing a cable to it;
  • FIG. 2 is a top plan view of an assembly embodying this invention and including. a pair of fixed contacts and of a cooperating contact bridge, the contact bridge being in engagement with one of the pair of fixed contacts and about to engage the other of the pair of fixed contacts;
  • FIG. 3 shows the same structure as FIG. 2 in the same fashion as FIG. 2, the contact bridge being shown in FIG. 3 in its position of full or complete contact engagement;
  • FIG. 4 is in part a side elevation of the structure of FIG. 3 and in part a section along IV-IV of FIG. 3.
  • numeral 1 has'been applied to indicate a fixed rod contact
  • numeral 2 has been applied to indicate a fixed circular or annular contact
  • numeral 4 has been applied to indicate a contact bridge for conductively interconnecting fixed contacts 1 and 17.
  • Contact bridge 4 is pivotableabout the center of circular or annular contact 17.
  • the radially inner end of contact bridge 4 has a contact surface or several such surfaces that remain in sliding engagement with circular or annular contact 17 as contact bridge 4 is being pivoted by means not shown about the center of fixed contact 17.
  • Contact bridge 4 is substantially T-shaped as seen in top-plan view (FIGS. 2 and 3).
  • a plurality of fixed contact rods 1 and associated parts may be arranged along the cir cular trajectory of the radially outer end of bridge 4 as is well known in the art of rotary selector switches and shown in U.S. Pat. No. 3,233,049 referred to above.
  • a substantially cup-shaped shielding member 2 is arranged-in coaxial relation to contact rod 1 and envelops a portion of the length thereof.
  • Shielding member 2 defines a circular opening situated to its left, as seen in FIG. I, and forms a recess, and rod contact 1 projects from the outside of member 2 through the aforementioned opening into the aforementioned recess.
  • Reference numeral 3 has been applied to indicate a closing member for shielding member 2 and its opening, respectively.
  • Closing member 3 is substantially in the shape of a spherical cap arranged in coaxial relation to shielding member 2.
  • Shielding member 2 and its closing member 3 have outer surfaces which are substantially spherical and have the same radii.
  • closing member 3 is slightly less than the diameter of the circular opening of shielding member 2. This makes it possible to move closing member 3 into shielding member 2 by relative movement of both members in the direction of the common axis thereof.
  • a helical spring 6 is interposed between shielding member 2 and closing member 3 biasing the closing member in a direction longitudinally of rod contact I away from shielding member 2. Since the radii of the outer surfaces of members 2, 3 are equal, their outer surfaces define jointly a substantially hemispherical envelope.
  • the axially outer end of member 3 has a reentrant portion forming a bearing surface in engagement with, and supported by, contact rod 1.
  • the end surface of contact rod 1, i.e. its surface which forms its left end, as seen in FIG.
  • Contact rod 1 is spherical and has substantially the same radius as parts 2 and 3, and defines an abutment cooperating with closing member 3 and limiting the movement thereof under the action of spring means 6.
  • Contact rod 1 has a rear extension including a screw-threaded stud terminal 9 supporting a nut 16 for securing a cable shoe 14 to it.
  • the aforementioned rear extension of contact rod 1 supports an additional substantially cup-shaped shielding member 13.
  • the latter has substantially the same geometrical configuration as shielding member 2.
  • Reference character 12 has been applied to indicate a vertical bar support of electric insulating material supporting contact rod 1 and all the parts associated with contact rod I such as, for instance, components 2, 3 and 13.
  • Screw 8 is integral with contact rod I, and projects transversely through insulating support 12. Screw 8 has a knurled surface 10 in the shape of a frustum of a cone for clamping parts I, 2, etc. against insulating support 12, and precluding any rotational motion of these parts relative to insulating support 12.
  • the cable shoe i4 is clamped between a ,collar integral with stud 9 and hexagonal nut 16 mounted on the axially outer screw-threaded end of stud 9.
  • contact bridge 4 is preferably made up of two' 'separate complementary parts 4a, 4b biased toward each other by a spring 5.
  • the radially inner ends of parts 4a, 4b are in permanent engagement with annular contact 17, as
  • the radially outer ends of components 4a, 4b may part from each other against the bias of spring 5, and allow contact rod l'to enter into the gap formed by the separation thereof. As shown in FIG. 4, the radially outer ends of parts 4a, 411 form a pair of shoulders being overlapped by the spherical head 7 of rod contact 1 when the latter isclamped between the two complementary portions 4a, 4b of bridge 4.
  • contact rod 1 is substantially cylindrical, or has a lateral cylindrical surfaceand that contact rod 1 defines a longitudinal axis.
  • the fulcrum (not shown) of contact bridge or pivotable contacnmeans 4 is arranged at a point situated along the aforementioned longitudinal axis defined by contact rod 1.
  • T- shaped bridge or movable contact means 4 extends radially outwardly from the aforementioned fulcrum and its flange portion fonn abutments engaging closing member 3 and moving the latter against the bias of spring 6 into the recess of shielding member 2.
  • Fig. 4 shows clearly that the radially outer contact surface of parts 40, 4b engage opposite surface elements of the lateral surface of rod contact 1 upon movedescribed with reference to a preferred embodiment thereof,
  • a high voltage switching device including fixed contacts and a movable contact bridge for conductively interconnecting pairs of said fixed contacts wherein some of said fixed contacts include:
  • b a substantially cup-shaped shielding member arranged in i -coaxial relation to said contact rod and enveloping a portion of the length thereof, said shielding member defining a circular opening through which said contact rod projects from the inside of said shielding member to the outside thereof;
  • a closing member for said shielding member having substantially the shape of a spherical cap arranged in coaxial relation to said shielding member and having an outer diameter slightly less than the diameter of said circular opening of said shielding member;
  • a switching device includingafixed radially inner circular contact, a contact bridge pivotableabout the centerof said circular contact and having aradially inner contact surface in permanent engagement with,said. ,circul ar contact-,and a plurality of fixed radially outer contacts arranged-in a circular concentric pattern around said circular contact and selectivelyengageable by a radially outer contact surface of said contact bridge wherein each of said plurality of radially outer fixed contacts includes a contact rod, a shielding ,member, a closing member and spring means as specified in claim 1.
  • a switching device'as specified in claim 6 wherein said rear extension of saidc o ntact rod forming a stud'terminal supports and additional shielding member having substantially the same geometrical configuration as said shielding member.
  • said rear extension includes screw means for attaching said contact rod to a perforated support; said screw means including a knurled surface in the shape of a'fi'ustumof a cone. 1 t
  • a high voltageswitching'device including in combination: i r i a. a fixed rod contact having a lateral surface and defining a longitudinal axis;
  • a shielding member for said rod contact arranged in coaxial relation to said ro'd contact, said shielding member having a substantially spherical outer surface and having a recess therein;
  • a substantially spherical closing member conforming to the shape of said recess and movable into said recess; spring means biasing said closing member in the direction of said longitudinal axis defined by said rod contact out of said recess; and 1 I r 4 e. pivotable contact means having a fulcrum arranged at a point situated along said longitudinal axis, said pivotable contact means having a radially outer abutment-surface arranged to'engage said closing member and to move said closing member against the bias of said spring meansinto said recess of said shielding member, and said pivotable contact means further having a radially outer contact surface engageable with said lateral surface of said rod.contact upon movement of said closing member into said recess of said shielding member.
  • said pivotable contact means is substantially T- shaped including a web portion and a flange portion, said web portion extending radially outwardly from said fulcrum, and said flange portion forming said radially outer abutment surface arranged to engage said closing member and to move said closing member against the bias of said spring means into said said shielding member is substantially spherical, has substantially the same radius as said shielding member and said closing member and forms an abutment limiting the movement of said closing member under the bias of said spring means.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Contacts (AREA)
  • Mechanisms For Operating Contacts (AREA)
US812078A 1968-05-24 1969-04-01 High voltage switching device Expired - Lifetime US3551628A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681765467 DE1765467B1 (de) 1968-05-24 1968-05-24 Kontaktanordnung fuer hochspannungsschalter

Publications (1)

Publication Number Publication Date
US3551628A true US3551628A (en) 1970-12-29

Family

ID=5698453

Family Applications (1)

Application Number Title Priority Date Filing Date
US812078A Expired - Lifetime US3551628A (en) 1968-05-24 1969-04-01 High voltage switching device

Country Status (10)

Country Link
US (1) US3551628A (enrdf_load_stackoverflow)
AT (1) AT293524B (enrdf_load_stackoverflow)
BE (1) BE733526A (enrdf_load_stackoverflow)
CH (1) CH493921A (enrdf_load_stackoverflow)
DE (1) DE1765467B1 (enrdf_load_stackoverflow)
ES (1) ES367542A1 (enrdf_load_stackoverflow)
FR (1) FR2009239A1 (enrdf_load_stackoverflow)
GB (1) GB1220190A (enrdf_load_stackoverflow)
NL (2) NL6907923A (enrdf_load_stackoverflow)
SE (1) SE362161B (enrdf_load_stackoverflow)

Cited By (3)

* 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
US20050040078A1 (en) * 2003-08-20 2005-02-24 Zinnen Herman A. Process for the desulfurization of hydrocarbonacecus oil
CN112154526A (zh) * 2018-05-18 2020-12-29 赖茵豪森机械制造公司 用于有载分接开关的触点系统

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL168080C (nl) * 1977-04-19 1982-02-16 Coq Bv Scheidingsschakelaar voor hoge spanning.
DE3243834C1 (de) * 1982-11-26 1984-03-29 Maschinenfabrik Reinhausen Gebrüder Scheubeck GmbH & Co KG, 8400 Regensburg Kontaktanordnung fuer Stufenwaehler von Stufentransformatoren
DE102010020040B4 (de) * 2010-05-11 2016-06-09 Maschinenfabrik Reinhausen Gmbh Schaltanordnung für einen Transformator mit einer an einer Schaltwelle befestigten Kontaktanordnung mit mehreren Kontaktelementen
FR3130733A1 (fr) 2021-12-21 2023-06-23 Commissariat A L'energie Atomique Et Aux Energies Alternatives Systeme et procede pour la detection de defauts dans des structures allongees

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1072078A (fr) * 1953-01-14 1954-09-08 Forges Ateliers Const Electr Contacts brise-glace

Cited By (4)

* 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
US20050040078A1 (en) * 2003-08-20 2005-02-24 Zinnen Herman A. Process for the desulfurization of hydrocarbonacecus oil
CN112154526A (zh) * 2018-05-18 2020-12-29 赖茵豪森机械制造公司 用于有载分接开关的触点系统
US11488789B2 (en) 2018-05-18 2022-11-01 Maschinenfabrik Reinhausen Gmbh Contact system for an on-load tap changer

Also Published As

Publication number Publication date
ES367542A1 (es) 1971-04-16
GB1220190A (en) 1971-01-20
NL6907923A (enrdf_load_stackoverflow) 1969-11-26
DE1765467B1 (de) 1971-05-27
NL135711C (enrdf_load_stackoverflow)
AT293524B (de) 1971-10-11
BE733526A (enrdf_load_stackoverflow) 1969-11-03
CH493921A (de) 1970-07-15
FR2009239A1 (enrdf_load_stackoverflow) 1970-01-30
SE362161B (enrdf_load_stackoverflow) 1973-11-26

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