GB897558A - High voltage isolators - Google Patents

High voltage isolators

Info

Publication number
GB897558A
GB897558A GB2998259A GB2998259A GB897558A GB 897558 A GB897558 A GB 897558A GB 2998259 A GB2998259 A GB 2998259A GB 2998259 A GB2998259 A GB 2998259A GB 897558 A GB897558 A GB 897558A
Authority
GB
United Kingdom
Prior art keywords
shaft
blade
insulator
degrees
axis
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
GB2998259A
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.)
SWITCHGEAR AND EQUIPMENT Ltd
Original Assignee
SWITCHGEAR AND EQUIPMENT Ltd
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 SWITCHGEAR AND EQUIPMENT Ltd filed Critical SWITCHGEAR AND EQUIPMENT Ltd
Priority to GB2998259A priority Critical patent/GB897558A/en
Publication of GB897558A publication Critical patent/GB897558A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
    • H01H31/28—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact
    • 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
    • H01H1/42—Knife-and-clip contacts
    • H01H2001/425—Knife-and-clip contacts with separate contact pressure spring confined between two contact knifes and urging the knifes onto a mating contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
    • H01H31/28—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact
    • H01H2031/286—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact wherein the contact is rotatable around its own longitudinal axis

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)

Abstract

897,558. Linkwork. SWITCHGEAR & EQUIPMENT Ltd., and OXLEY, D. A. J. Aug. 31, 1960 [Sept. 2, 1959], No. 29982/59. Class 80 (3). [Also in Group XXXVII] In a high-voltage isolator in which a hinged switch-blade 11 is swung between a lowered closed position and a raised open position by the rotation of an insulator shaft 23, the centre of gravity of the shaft is lowered as the blade is raised and the mass of the shaft more than counterbalances the blade, at least when the blade is in and near its raised position so that the blade will not fall and close the circuit should the operating mechanism fail when the isolator is open. The blade 11 is supported in a trunnion bearing 20 carried by a transverse pivot 19 in a link 18, the end of the blade 11 being cranked at 22 at 45 degrees to the length of the blade. This cranked end 22 is received in a bearing 27 on the upper plate 25 of the insulator shaft 23, the bearing being inclined at 45 degrees to the vertical axis of the shaft and being offset from the vertical axis. The lower plate 26 of the insulator shaft is linked to a support-plate 30 on an inclined operating shaft 31 by means of a universal joint 28 offset from the axis of rotation of the plate 30 and from the vertical axis of the insulator shaft. To open the isolator, the shaft 31 is turned through 180 degrees, causing a corresponding rotation of the insulator shaft 23 and the lowering of the shaft 23 to the dotted line position, Fig. 2. This movement of the insulator shaft 23 causes the blade 11 to rotate through 90 degrees about its axis to release a contact cam 21 from fixed contacts 13, and also to swing about the pivot 19 to a substantially vertical position. In a modified arrangement the blade may be vertical when closed, the pivot being uppermost and the insulator shaft being horizontal. In this case the mass of the insulator shaft is disposed so that its centre of gravity is eccentric to the axis of rotation of the shaft and is in its lowest position when the blade is in its horizontal open position.
GB2998259A 1959-09-02 1959-09-02 High voltage isolators Expired GB897558A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2998259A GB897558A (en) 1959-09-02 1959-09-02 High voltage isolators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2998259A GB897558A (en) 1959-09-02 1959-09-02 High voltage isolators

Publications (1)

Publication Number Publication Date
GB897558A true GB897558A (en) 1962-05-30

Family

ID=10300349

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2998259A Expired GB897558A (en) 1959-09-02 1959-09-02 High voltage isolators

Country Status (1)

Country Link
GB (1) GB897558A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4379956A (en) * 1980-12-15 1983-04-12 Cleaveland/Price Enterprises, Inc. Break-jaw construction for a disconnecting switch structure
EP0951030A2 (en) * 1998-04-16 1999-10-20 CO.E.P.T.E. COSTRUZIONI ELETTROMECCANICHE PER TRAZIONE ELETTRICA S.r.l. Electric contact with twin-knife insertion coupling, particularly for disconnectors, switches or the like.
CN109216093A (en) * 2017-07-05 2019-01-15 河南平高电气股份有限公司 Disconnecting switch and its operating mechanism

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4379956A (en) * 1980-12-15 1983-04-12 Cleaveland/Price Enterprises, Inc. Break-jaw construction for a disconnecting switch structure
EP0951030A2 (en) * 1998-04-16 1999-10-20 CO.E.P.T.E. COSTRUZIONI ELETTROMECCANICHE PER TRAZIONE ELETTRICA S.r.l. Electric contact with twin-knife insertion coupling, particularly for disconnectors, switches or the like.
EP0951030A3 (en) * 1998-04-16 2000-05-10 CO.E.P.T.E. COSTRUZIONI ELETTROMECCANICHE PER TRAZIONE ELETTRICA S.r.l. Electric contact with twin-knife insertion coupling, particularly for disconnectors, switches or the like.
CN109216093A (en) * 2017-07-05 2019-01-15 河南平高电气股份有限公司 Disconnecting switch and its operating mechanism
CN109216093B (en) * 2017-07-05 2020-10-02 河南平高电气股份有限公司 Isolating switch and operating mechanism thereof

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