EP0736883A1 - Holding flanges - Google Patents

Holding flanges Download PDF

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Publication number
EP0736883A1
EP0736883A1 EP96850067A EP96850067A EP0736883A1 EP 0736883 A1 EP0736883 A1 EP 0736883A1 EP 96850067 A EP96850067 A EP 96850067A EP 96850067 A EP96850067 A EP 96850067A EP 0736883 A1 EP0736883 A1 EP 0736883A1
Authority
EP
European Patent Office
Prior art keywords
parts
flange
coil
holding
iron core
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.)
Withdrawn
Application number
EP96850067A
Other languages
German (de)
English (en)
French (fr)
Inventor
Jerker Andersson
Rune Goldwitz
Tommy Lindkvist
Ronny Magnusson
Lars Sjögren
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.)
ABB AB
Original Assignee
Asea Brown Boveri AB
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 Asea Brown Boveri AB filed Critical Asea Brown Boveri AB
Publication of EP0736883A1 publication Critical patent/EP0736883A1/en
Withdrawn legal-status Critical Current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
    • H01F27/24—Magnetic cores
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/266—Fastening or mounting the core on casing or support

Definitions

  • the present invention relates to a method of arranging holding flanges on an electromagnetic unit, for instance on capacitor voltage transformers, and to holding flanges arranged in accordance with the method.
  • Holding flanges, or press flanges, hitherto used with electromagnetic units of capacitor voltage transformers normally comprise eight differently configured parts, which function to fixate and hold together the transformer core with the aid of screw joints, and to shield the sharp corners of the core.
  • the flanges may be provided with holes for lifting and lowering the unit when fitting and removing the same respectively.
  • the present invention proposes the use of holding flanges which consist solely of three pairs of mutually different plate-metal holding flange parts which together are able to form an electromagnetic unit together with screw joints, the iron core and the coil.
  • the holding-flanges In addition to fixating, holding together and shielding the transformer core, the holding-flanges also provide means for supporting a complete unit prior to fitting the same, means for the attachment of a damping circuit, means for adjusting the unit when mounted in an oil box, means for guiding a unit in the oil box when mounting said unit in said box, means for the attachment of a compensating reactor, and attachment means to facilitate lifting of the entire unit and for earthing all parts that are to be earthed.
  • the aforesaid three pairs of differently configured metal-plate flange-parts may be arranged in pairs in mirror image to one another, and used in the manufacture of an electromagnetic unit together with core and coil.
  • Figure 1 illustrates the six mutually different flange-parts according to the invention from above.
  • Figure 2 illustrates from above the flange-parts when assembled in accordance with the invention.
  • Figure 3 is a side view of the six mutually different flange-parts according to the invention.
  • Figure 4 is a side view of the flange-parts when assembled in accordance with the invention.
  • Figure 5 illustrates from above the assembled flange-parts together with other equipment in a capacitor voltage transformer.
  • Figure 6 is a side view of the capacitor voltage transformer of Figure 5 and shows flange-parts and other equipment.
  • FIGS 1-4 illustrate the configuration and the assembly of the various holding-flange parts.
  • the holding flanges consist of three different pairs of metal-plate parts which are arranged in pairs to form together a holding and supporting casing for an iron core and coil.
  • the flange-parts 1, 2 of one pair are mutually identical and face towards one another and are intended to be placed diagonally around the core.
  • the flange-parts 3 and 4 of another pair are also mutually identical and face towards one another when placed diagonally around the core, wherein the flange-parts 1 and 3 and the flange-parts 2 and 4 are configured, or designed, so that when fitted they will together act as a smooth earth plane around a fitted winding, such as a high voltage winding on part of the iron core.
  • the flange-parts 1-4 also include lifting holes 5 and attachment holes for the attachment of a damping coil, for instance.
  • the flange-parts 1-4 are provided with guide cylinders 6 to facilitate fitting and fastening of the flange-parts to the assembled iron core, coil and other equipment in a box, said guide cylinders or sleeves coacting with corresponding guiding and fastening rods 27 provided in the bottom of said box in mounting and securing the iron core, coil and other equipment.
  • the flange-parts 1-4 also include outwardly angled flange surfaces 7, 8 which are provided with upper and lower holes 9, 10 by means of which the flange-parts hold together and fixate the iron core and coil together through the medium of screw joints 11, 12.
  • the third pair of flange-parts 13, 14 are mutually identical and provided with an upper planar part 15 and a lower generally planar part 16 which is angled down from the planar part 15.
  • the upper planar parts 15 are provided with holes 17 which are disposed to enable the flange-parts 13, 14 to be connected to the flange-parts 1-4 with the aid of the earlier mentioned guide and fastening rods 27.
  • Holes 18 are provided to enable the flange-parts 13, 14 to be connected to the flange-parts 1-4 through the medium of holes 10 and screw joints 12. When the screw joints 11 and 12 are fitted and tightened on the guide and attachment rods 27, the flange-parts 1-4 and 13-14 will together function as a unit which fixates and secures the iron core and coil and also support any other electrical equipment.
  • Figures 5 and 6 illustrate a unit comprising holding flanges 2, 4, iron core 19, coil 20 and other equipment mounted on the flanges and lowered into a box 21, which in the illustrated case may conveniently have the form of a circular container, optionally slightly conical, having an upper, larger openable end.
  • a trench 22 on the bottom of the container, the bottom outwardly lying part of the core 19 may be allowed to seat in the trench and guide rod attachments 23 placed over and on one side of the trench, therewith enabling the upper planar portions 15 of the flange-parts 13, 14 to stand on the upper bottom of the box and simultaneously earthed with a small free space for accommodating transformer oil around the outwardly lying part of the core.
  • the holes in the flange-parts may be used for the direct attachment of an attenuating or damping coil 24.
  • the upwardly facing holes on the flange-parts can be used for the direct attachment of a damping resistor 25 and also for the attachment of a compensating reactor 26.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Regulation Of General Use Transformers (AREA)
  • Coils Of Transformers For General Uses (AREA)
EP96850067A 1995-04-03 1996-04-01 Holding flanges Withdrawn EP0736883A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9501213A SE507350C2 (sv) 1995-04-03 1995-04-03 Förfarande för att anordna pressflänsar samt pressflänsanordning
SE9501213 1995-04-03

Publications (1)

Publication Number Publication Date
EP0736883A1 true EP0736883A1 (en) 1996-10-09

Family

ID=20397812

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96850067A Withdrawn EP0736883A1 (en) 1995-04-03 1996-04-01 Holding flanges

Country Status (4)

Country Link
EP (1) EP0736883A1 (sv)
JP (1) JPH08279419A (sv)
CA (1) CA2172792A1 (sv)
SE (1) SE507350C2 (sv)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101447327B (zh) * 2008-09-27 2010-12-15 国网武汉高压研究院 提高电容式电压互感器抗污能力的方法及其装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2910663A (en) * 1954-12-29 1959-10-27 Gen Electric Transformer core clamp connector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2910663A (en) * 1954-12-29 1959-10-27 Gen Electric Transformer core clamp connector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101447327B (zh) * 2008-09-27 2010-12-15 国网武汉高压研究院 提高电容式电压互感器抗污能力的方法及其装置

Also Published As

Publication number Publication date
JPH08279419A (ja) 1996-10-22
SE9501213D0 (sv) 1995-04-03
CA2172792A1 (en) 1996-10-04
SE507350C2 (sv) 1998-05-18
SE9501213L (sv) 1996-10-04

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