SE461753B - Insulation for layered coils in coils with water-filled transformers and impedance coils - Google Patents

Insulation for layered coils in coils with water-filled transformers and impedance coils

Info

Publication number
SE461753B
SE461753B SE8403434A SE8403434A SE461753B SE 461753 B SE461753 B SE 461753B SE 8403434 A SE8403434 A SE 8403434A SE 8403434 A SE8403434 A SE 8403434A SE 461753 B SE461753 B SE 461753B
Authority
SE
Sweden
Prior art keywords
coils
insulation
insulating
layered
coated
Prior art date
Application number
SE8403434A
Other languages
Swedish (sv)
Other versions
SE8403434L (en
SE8403434D0 (en
Inventor
W Kienreich
Original Assignee
Elin Union Ag
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 Elin Union Ag filed Critical Elin Union Ag
Publication of SE8403434D0 publication Critical patent/SE8403434D0/en
Publication of SE8403434L publication Critical patent/SE8403434L/en
Publication of SE461753B publication Critical patent/SE461753B/en

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/32Insulating of coils, windings, or parts thereof
    • H01F27/323Insulation between winding turns, between winding layers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/30Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/303Clamping coils, windings or parts thereof together
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/32Insulating of coils, windings, or parts thereof
    • H01F27/322Insulating of coils, windings, or parts thereof the insulation forming channels for circulation of the fluid

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulating Of Coils (AREA)
  • Insulated Conductors (AREA)

Description

461 755 Uppfinningen kännetecknas av att för indränkning av spolen med isolerande olja, de elektriska ledarna i de skiktade lindningarna är omlindade med isolerande band, vilka är belagda med längs bandet fördelade punkter av ett limmande harts, till bildning av ett av flera skikt bestående, vinkelrätt mot ledarnas lindningsriktning pàfört isolerande hölje. 461 755 The invention is characterized in that for soaking the coil with insulating oil, the electrical conductors in the layered windings are wrapped with insulating strips, which are coated with points distributed along the strip of a gluing resin, to form a multilayer, perpendicular against the winding direction of the conductors applied insulating casing.

Med denna isolering - enligt uppfinningen har det första gången blivit möjligt att undvika bildning av luftfyllda hâlrum i vätskekylda spolar och att säkra en god indränkning av isolationen med isolerande vätska, t.ex. transformator- eller sili- konolja. Enligt uppfinningen kan de enskilda linüfingsskikten och de angränsande ytorna på ledarna i lindningen_vara hop- limmade i radiell riktning med varandra och förstärkta medelst en mellan desamma liggande skiktad isolering. _ Enligt en utföringsform av uppfinningen'användes såsom skik- tad isolering flera över varandra skiktade, punktvis med harts be- lagda isoleringsbandu 'Såsom skiktad isolering mellan tvâ lindnings- skikt användes även punktvis med harts belagda, i flera skikt över varandra lindade isoleringsfolier, vilka hoplimmas med den harts- belagda isoleringen på ledarna i lindningen vid efterföljande upp- hettning och åstadkommer en kraftbunden fast förbindning mellan lindningsskikten i axiell riktning av spolen.With this insulation - according to the invention, it has for the first time become possible to avoid the formation of air-filled cavities in liquid-cooled coils and to ensure a good soaking of the insulation with insulating liquid, e.g. transformer or silicone oil. According to the invention, the individual line layers and the adjacent surfaces of the conductors in the winding can be glued together in radial direction with each other and reinforced by means of a layered insulation lying therebetween. According to an embodiment of the invention, several layered, point-to-point, resin-coated insulating tapes are used as layered insulation. As layered insulation between two winding layers, point-of-resin-coated, multi-layered-wound insulating foils are also used. is glued together with the resin-coated insulation on the conductors in the winding during subsequent heating and provides a force-bonded fixed connection between the winding layers in the axial direction of the coil.

Enligt ett ytterligare kännetecken på uppfinningen anordnas för âtskiljande av lindningsskikten medelst kylkanaler lister av företrädesvis i korrugerad form framställda isolerande material.According to a further feature of the invention, for separating the winding layers by means of cooling channels, strips of insulating material, preferably produced in corrugated form, are arranged.

Har för förbättring av kylningen anordnats'kylkanaler mellan tvâ lindningsskikt, inlägges för âtskiljande av dessa bägge lindnings- skikt lister av isolerande material mellan desamma. Dessa såsom distansorgan tjänande delar av isolerande material hoplimmas vid den ovan flera gånger omnämna upphettningen med den med harts be- lagda ledarisoleringen på de närliggande lindningsskikten, varige- nom en kraftbunden förbindning mellan lindningsskikten åstadkommes.To improve the cooling, cooling ducts have been arranged between two winding layers, strips of insulating material are inserted between these two winding layers to separate them. These parts of insulating material serving as spacers are glued together in the above-mentioned heating several times with the resin-coated conductor insulation on the adjacent winding layers, whereby a force-bonded connection between the winding layers is achieved.

, Isoleringen ' enligt uppfinningen ger totalt över alla lindningsskikten i spolen en fast, kraftbunden förbindning i radiell och axiell riktning, vilken förbindning motverkar de under drift eller vid kortslutningar på nätet uppträdande mekaniska på- känningarna. _ Isoleringen enligt uppfinningen möjliggör även en fullständig indränkning (impregnering) med isoleringsvätska, 461 753 3 varigenom åstadkommes att även uppträdande elektriska spänningspå- känningar säkert behärskas.The 'insulation' according to the invention provides a total, force-bonded connection in the radial and axial direction over all the winding layers in the coil, which connection counteracts the mechanical stresses which occur during operation or in the event of short circuits on the network. The insulation according to the invention also enables a complete soaking (impregnation) with insulating liquid, whereby it is ensured that even occurring electrical voltage stresses are safely controlled.

Uppfinningen beskrives närmare nedan under hänvisning till bi- fogade ritning, på vilken fig. 1 och 2 visar ledare med isolerande bana, fig". 's och 4 visar två skikt av ledare och fig; s och s visar ledarna i isoleringen enligt uppfinningen.The invention is described in more detail below with reference to the accompanying drawing, in which Figs. 1 and 2 show conductors with an insulating path, Figs. 4 and 4 show two layers of conductors and Figs. 1 and 2 show the conductors in the insulation according to the invention.

Fig. 1 visar en rund ledare 1, som är omlindad med isolerande band 2, vilka är punktvis belagda med harts 3 i É-tillstånd. Fig. 2 visar en rektangulär ledare 1, som är omlindad med isolerande band 2, Vilka är punktvis belagda med harts 3^i B-tillstànd. ~ 'Fig. 3 visar tätt invid varandra liggande, lindade runda leda- re 1, vilka är omlindade med punktvis hartsbelagda isolerande band 2, och vilka genom en efterföljande upphettning har hoplimmats med varandra. Fig. 4 visar tätt invid varandra liggande, lindade leda- re 1 med rektangulärt tvärsnitt, vilka är omlindade med punktvis hartsbelagda isolerande band 2, och vilka genom efterföljande upp- hettning har hoplimmats med varandra. ' ¿ Ä Fig. 5 visar tvâ lindningsskikt av runda ledare 1, vilka är omlindade med hartsbelagda isolerande band 2 och försedda med en mellanliggande skiktad isolering, som består av flera skikt på var- andra lindade, punktvis med harts 4 i B-tillstånd belagda isolerande folier 3. Genom efterföljande upphettning har de runda ledarna 1 i de olika lindningsskikten hoplimmats med varandra och med de iso- lerande folierna 3 i den skiktade isoleringen, varigenom en kraft- bunden förbindning har erhållits mellan de bägge lindningsskikten.Fig. 1 shows a round conductor 1, which is wrapped with insulating tape 2, which are spot-coated with resin 3 in the É state. Fig. 2 shows a rectangular conductor 1, which is wrapped with insulating tape 2, which are spot-coated with resin 3 in the B state. FIG. 3 shows closely spaced, wound round conductors 1, which are wrapped with point-based resin-coated insulating strips 2, and which have been glued together by a subsequent heating. Fig. 4 shows closely spaced, wound conductors 1 with a rectangular cross-section, which are wrapped with point-resin-coated insulating bands 2, and which have been glued together with subsequent heating. Fig. 5 shows two winding layers of round conductors 1, which are wrapped with resin-coated insulating tape 2 and provided with an intermediate layered insulation, which consists of several layers on each other wound, pointwise coated with resin 4 in B-state insulating foils 3. By subsequent heating, the round conductors 1 in the different winding layers have been glued together with each other and with the insulating foils 3 in the layered insulation, whereby a force-bonded connection has been obtained between the two winding layers.

Fig. 6 visar två lindningsskikt av rektangulära ledare 1, vilka är omlindade med hartsbelagda isolerande band 2 och försedda med en mellanliggande skiktad isolering, som består av flera skikt på var- andra lindade, punktvis med harts 4 i B-tillstånd belagda isolerande folier 3. Genom efterföljande upphettning har ledarna 1 i de en- -skilda lindningsskikten hoplimmats med varandra och med de isoleran- de folierna 3 i den skiktade isoleringen, varigenom en kraftbunden förbindning mellan de bägge lindningsskikten har âstadkommits.Fig. 6 shows two winding layers of rectangular conductors 1, which are wrapped with resin-coated insulating strips 2 and provided with an intermediate layered insulation, which consists of several layers on each other wound, point-by-point resin-coated insulating foils 3 in B-state By subsequent heating, the conductors 1 in the individual winding layers have been glued together with each other and with the insulating foils 3 in the layered insulation, whereby a force-bonded connection between the two winding layers has been established.

Claims (3)

461 753 P a t e n t k r a v461 753 P a t e n t k r a v 1. Isolering för skiktade lindníngar i spolar hos vätske- fyllda transformatorer och impedansspolar, i vilka de elek- triska ledarna uppvisar kvadratískt eller rektangulärt tvär- snitt och är försedda med isolerande band, vilka uppvisar ett i värme aktiverbart límskikt, k ä n n e t e c k n a d a v att för indränkning av spolen med isolerande olja, de elek- triska ledarna (1) i de skiktade lindningarna är omlíndade med isolerande band (2), vilka är belagda med längs bandet för- delade punkter av ett limmande harts (3), till bildning av ett av flera skikt bestående, vinkelrätt mot ledarnas lindnings- riktning páfört isolerande hölje.Insulation for layered windings in coils of liquid-filled transformers and impedance coils, in which the electrical conductors have a square or rectangular cross-section and are provided with insulating strips, which have a heat-activatable adhesive layer, characterized in that soaking the coil with insulating oil, the electrical conductors (1) in the layered windings are wrapped with insulating tape (2), which are coated with points distributed along the tape of a gluing resin (3), to form a consisting of several layers, perpendicular to the winding direction of the conductors applied insulating cover. 2. Isolering enligt krav 1, k ä n n e t e c k n a d a v att såsom skiktad isolering användes flera över varandra skíktade, punktvis med harts belagda isolerande band (2).Insulation according to Claim 1, characterized in that several layered, point-by-point resin-coated insulating strips (2) are used as layered insulation. 3. Isolering enligt krav 1 eller 2,- k ä n n e t e c k - n a d a v att för átskiljande av lindningsskikten genom kyl- kanaler är lister av isolerande material anordnade mellan lind- ningsskíkten.Insulation according to Claim 1 or 2, characterized in that strips of insulating material are arranged between the winding layers in order to separate the winding layers through cooling ducts.
SE8403434A 1983-06-28 1984-06-27 Insulation for layered coils in coils with water-filled transformers and impedance coils SE461753B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0236083A AT378279B (en) 1983-06-28 1983-06-28 INSULATION ARRANGEMENT FOR LAYER DEVELOPMENTS IN COILS OF LIQUID-COOLED TRANSFORMERS AND THROTTLES

Publications (3)

Publication Number Publication Date
SE8403434D0 SE8403434D0 (en) 1984-06-27
SE8403434L SE8403434L (en) 1984-12-29
SE461753B true SE461753B (en) 1990-03-19

Family

ID=3532907

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8403434A SE461753B (en) 1983-06-28 1984-06-27 Insulation for layered coils in coils with water-filled transformers and impedance coils

Country Status (5)

Country Link
JP (1) JPS6068609A (en)
AT (1) AT378279B (en)
CH (1) CH664844A5 (en)
DE (1) DE3422746A1 (en)
SE (1) SE461753B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3738410A1 (en) * 1987-11-12 1989-05-24 Ceag Licht & Strom Coil for a transformer or repeating coil
JPH0690066B2 (en) * 1989-08-02 1994-11-14 鹿島建設株式会社 Measuring method of concrete crown
DE19639152C2 (en) * 1996-09-24 1999-10-28 Vem Elektroantriebe Gmbh Tape for the production of the insulation of molded coils for high-voltage rotating electrical machines and method for producing this insulation
DE19703161A1 (en) * 1997-01-29 1998-07-30 Abb Patent Gmbh Winding wire e.g. for oil transformers
DE19951709A1 (en) * 1999-10-27 2001-05-03 Alcatel Sa Electrical conductor with a rectangular or quadratic cross section
EP4386787A1 (en) * 2022-12-13 2024-06-19 Hitachi Energy Ltd Winding assembly for a transformer and method for manufacturing a winding assembly for a transformer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH403068A (en) * 1962-05-22 1965-11-30 Liebknecht Transformat Method of solidifying windings for high voltage transformers, reactors and instrument transformers
DE1488226B2 (en) * 1964-11-20 1970-03-19 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Frontal winding edge insulation for cylindrical windings
DE1514231C3 (en) * 1965-10-29 1974-08-22 Messwandler-Bau Gmbh, 8600 Bamberg High-voltage multilayer winding encased with thermoset insulating compound, especially for voltage converters
DE2854973A1 (en) * 1978-12-20 1980-07-10 Vogt Gmbh & Co Kg METHOD FOR PRODUCING INSULATION LAYERS ON COILS, TRANSFORMERS OR THE LIKE.

Also Published As

Publication number Publication date
DE3422746A1 (en) 1985-01-03
AT378279B (en) 1985-07-10
ATA236083A (en) 1984-11-15
JPS6068609A (en) 1985-04-19
SE8403434L (en) 1984-12-29
CH664844A5 (en) 1988-03-31
SE8403434D0 (en) 1984-06-27

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