WO1998029878A1 - Papier stratifie en plastique isolant impregne d'huile, papier kraft utilise dans du papier stratifie et cable electrique realise au moyen de ce papier - Google Patents

Papier stratifie en plastique isolant impregne d'huile, papier kraft utilise dans du papier stratifie et cable electrique realise au moyen de ce papier Download PDF

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Publication number
WO1998029878A1
WO1998029878A1 PCT/JP1996/003853 JP9603853W WO9829878A1 WO 1998029878 A1 WO1998029878 A1 WO 1998029878A1 JP 9603853 W JP9603853 W JP 9603853W WO 9829878 A1 WO9829878 A1 WO 9829878A1
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WO
WIPO (PCT)
Prior art keywords
paper
layer
plastic
oil
low
Prior art date
Application number
PCT/JP1996/003853
Other languages
English (en)
Japanese (ja)
Inventor
Tohru Takahashi
Hiroyuki Miyata
Kohichi Iinuma
Shotaro Yoshida
Ikuo Shigetoshi
Original Assignee
Fujikura 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 Fujikura Ltd. filed Critical Fujikura Ltd.
Priority to PCT/JP1996/003853 priority Critical patent/WO1998029878A1/fr
Priority to EP96942664A priority patent/EP0889485A4/fr
Publication of WO1998029878A1 publication Critical patent/WO1998029878A1/fr
Priority to NO983927A priority patent/NO983927L/no

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/06—Gas-pressure cables; Oil-pressure cables; Cables for use in conduits under fluid pressure
    • H01B9/0688—Features relating to the dielectric of oil-pressure cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/48—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials
    • H01B3/54—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials hard paper; hard fabrics
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/02—Disposition of insulation
    • H01B7/0208—Cables with several layers of insulating material
    • H01B7/0216—Two layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/02—Disposition of insulation
    • H01B7/0208—Cables with several layers of insulating material
    • H01B7/0225—Three or more layers

Definitions

  • Plastic immersion paper for oil immersion insulation plastic immersion paper for oil immersion insulation, kraft paper used for it, and power cable using it
  • the present invention relates to a plastic sheet for oil infiltration edges used for an oil immersion insulator of a power cable such as a 0F cable, a craft sheet used for the laminate sheet, Regarding the power cable using this, the adhesive strength between the craft paper and the plastic film is increased, and the impulse breakdown characteristics of the oil immersion insulator obtained using the braid are improved. It is something.
  • This power cable is suitable for DC power transmission and AC power transmission.
  • the plastic laminate paper that composes the oil-immersed insulator of the OF cable is a polished polypropylene paper that is currently bonded to both sides of a polypropylene film.
  • Len Laminate paper is widely used. This is because this polypropylene laminating paper has better dielectric properties and dielectric breakdown properties than conventional craft paper.
  • plastic laminated paper such as polypropylene laminated paper
  • the production of such plastic laminated paper is carried out from the T-die of the extruder through a molten plastic film.
  • the film is extruded, and in the molten state, the paper is stretched along both sides of the film, pressed by a roll, cooled, and wound.
  • the bonding between the plastic fin and the plastic paper of plastic laminate paper is performed by melting the plastic into the fine irregularities on the surface of the paper.
  • the adhesion is only due to the anchor effect in which the hook is embedded, and the bonding strength is generally weak.
  • an adhesive In order to increase the adhesive strength, it is conceivable to interpose an adhesive at the interface between the plastic film and the craft paper, but the adhesive is generally a substance having a polar group. Therefore, the use of an adhesive causes deterioration of the dielectric properties and cannot be used.
  • plastic films and paper can be used without using adhesive. Measures are needed to increase the bonding strength.
  • the oil-immersed insulator made of plastic laminated paper is used in an oil-immersed state, and the adhesive strength between the craft paper and the plastic film is low. However, in the oil-immersed state, the plastic film swells and absorbs oil, so that the decrease is more remarkable.
  • the present invention has been made in order to solve such problems, and a plastic film and a plastic film of a plastic laminated paper constituting an oil immersion insulator such as a 0F cable.
  • the purpose is to sufficiently increase the adhesive strength to the draft paper and at the same time to improve the dielectric breakdown characteristics when plastic laminate paper is used as the oil immersion insulator.
  • the plastic paper for plastic laminate paper of the present invention is a multi-layer paper composed of two or more layers of paper having different air densities.
  • the tightness of the high-density layer of this craft paper is more than 1000 galleseconds, preferably more than 200 galleseconds.
  • the airtightness should be less than 500 galle seconds, preferably less than 200 galle seconds, and more preferably less than 200 galle seconds.
  • the high airtightness of the layer, density 0. 7 g Z cm 3 a dense layer exceeding, low airtightness layer density 0. 7 g layer der of Z cm 3 or lower density You may.
  • the high density, high density layer is fourdrinier, and the low density, low density layer is round netting.
  • the thickness of the high airtight layer is 15 m or more, and the thickness of the low airtight layer is 5 m or more. m or more is desirable.
  • the low-density layer of the above-described multi-layered paper is laminated to a plastic film to obtain the plastic laminated paper of the present invention.
  • the plastic film is preferably a polypropylene phenol film, and the polypropylene film is particularly preferred.
  • Crossing power It is desirable that the homopolymer is 5 to 50 g / 10 minutes.
  • a power cable according to the present invention has an oil-immersed insulator obtained by winding the above-described plastic laminate paper and impregnating it with insulating oil.
  • FIG. 1 is a schematic sectional view showing a first example of the craft paper of the present invention.
  • FIG. 2 is a schematic sectional view showing a second example of the craft paper of the present invention.
  • FIG. 3 is a schematic sectional view showing a third example of the craft paper of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIG. 1 shows a first example of the craft paper of the present invention.
  • This example shows a double craft paper 1 composed of two layers 1a and 1b having different air densities. It is.
  • the first layer 1a is a layer of low airtightness
  • the second layer 1b is a layer of higher airtightness than the first low airtight layer 1a.
  • the airtightness of the first low airtight layer 1a is less than 50,000 galleseconds, preferably less than 2000 galleseconds, and more preferably less than 200 galleseconds. If the airtightness is less than 5,000 Gare seconds, the adhesion to the plastic film is inferior and inconvenient.
  • the airtightness of the second high airtight layer 1b is more than 1000 Galle seconds, preferably more than 2000 Galle seconds, and more preferably more than 400 Galle seconds. If the airtightness is set to 1 res or more and less than 1000 galle seconds, the impulse withstand voltage of the oil-immersed insulator is reduced, which is inconvenient.
  • the thickness of the double-kraft paper 1 is not particularly limited, but is usually in the range of 20 to 100; um, and the thickness of the low airtight layer 1a is at least 5 m or more. And good It should be in the range of 5 to 30 m.
  • the thickness of the highly airtight layer 1b is at least 1 and preferably in the range of 15 to 70 / 7m. If the thickness of the first layer 1a is less than 5 nm, sufficient adhesive strength with the plastic film is not obtained, and if the thickness of the second layer 1b is less than 15 m, the isopulse withstand voltage is low. descend.
  • the ratio of the thickness of the low airtight layer 1a and the high airtight layer 1 to the total thickness of the double-kraft paper 1 is smaller for the lower airtight layer 1a. This is advantageous. This is because the area involved in the adhesion is a relatively thin part of the surface, and if the surface of this part has large irregularities, sufficient adhesion strength can be obtained. This is because thicker steel has higher impulse breakdown resistance.
  • the double-croft paper 1 it is desirable to use low-loss water-washed paper with good dielectric properties, and the conductivity of the immersion liquid (according to JIS-C-211) A material having a low conductivity of 15 S / cm or less is preferable.
  • Such double-kraft paper 1 is used to form pulp for fibrillation of paper fibers when dry or wet papermaking is performed by a long-mesh or round-mesh paper machine. Manufactured by a method such as stacking on paper.
  • FIG. 2 shows a second example of the craft paper of the present invention.
  • This craft paper 11 is triple craft paper.
  • the outer surfaces 11a and 11a are formed of a layer having low airtightness, and the inner surface 11b is formed of a layer having high airtightness.
  • the airtightness of the low airtight layer on both outer surfaces 11a and 11a of the triple-kraft paper 11 is less than 50,000 Galle seconds, preferably 200 Galle. Sub-seconds, more preferably between 20 and 500 gall, and the tightness of the high airtight layer inside 2 b is more than 100 g-seconds, preferably 4 g It is more than 0.000 Gurley seconds, and more preferably 40000-20000 Gurley seconds.
  • the thickness of the triple craft paper 11 is not particularly limited, but is usually in the range of 20 to 100 zm.
  • the ratio of the thickness of the low airtight layer 11a and the high airtight layer 11b to the total thickness of the triple paper 11 is the ratio of the low airtight layer 11a.
  • a smaller one is advantageous (the area involved in the adhesion is a relatively thin part of the surface; The reason for this is that if the surface unevenness is large, sufficient adhesive strength can be obtained, and the thicker the high airtight layer 11b is, the higher the impulse breakdown resistance is.
  • the thickness of the low airtight layer 11a is 5 / m or more, preferably 5 to 20zm, and the thickness of the high airtight layer 11b is 15m or more, preferably Is 15 to 60 ⁇ m.
  • FIG. 3 shows a third example of the craft paper of the present invention.
  • This craft paper 21 is a double-kraft paper, the first layer 21a is a low-density layer, and the second layer 21b is a high-density layer. is there.
  • the density of the first low-density layer 21a is less than 0.7 g Z cm 3 , preferably less than 0.6 g / cm 3, more preferably 0.6-0.5. g / cm 3 , and if the density exceeds 0.7 g / cm 3 , the adhesiveness to the plastic film is inferior and disadvantageous.
  • the first low-density layer 21a is also a low-density layer having an air density of 200 Galle seconds or less, preferably 20 Gale seconds or less.
  • the airtightness of the second high airtight layer 21b is set to at least 1000 Galle seconds, preferably at least 300 Galle seconds, and If the airtightness is lower than this, the impulse withstand voltage of the oil-immersed insulator is reduced, which is inconvenient.
  • the density layer 2 1 b of the second high airtightness at the same time exceeds 0. 7 g Z cm 3, and rather is preferred. 0. 9 is also in gZ cm 2 or more dense layers.
  • the first layer 21a having a low density and a low airtightness is a round net paper made by using a wet type round net paper machine, and the first layer 21a having a high density and a high airtightness is provided.
  • the second layer is desirably a fourdrinier made using a wet fourdrinier machine. Then, the ratio of the thickness of the layer 21b of the second fourdrinier papermaking to the thickness of the layer 21a of the first round network papermaking is about 0.8 to 3.
  • the plastic film is laminated so that the plastic film is in contact with the low-density low-density first layer 21a, and the plastic film is laminated. After being made into laminated paper, it is cut into tapes and this tape is wound.However, at the time of cutting, there is no breakage of the craft paper, and the paper is crumpled. Has tensile strength, elongation, It is assumed that the oil immersion insulator has a small difference between the horizontal and vertical directions in the physical properties such as the rubbing ratio, is homogeneous without anisotropy, and has good adhesion to the plastic film. The impulse breaking strength of the steel is also good.
  • the craft paper of the present invention may be a multi-ply craft paper having three or more layers of a low airtight layer and a high airtight layer.
  • the platform at least one layer in contact with the plastic film, has a thickness of less than 500,000 Gale seconds, preferably 200,000 Gare seconds, and more preferably It is sufficient if the layer has a low air-tightness of less than 200 Galle seconds, and the other layers have a higher air-tightness, more than 100 Galle seconds, preferably 200 Galle seconds. Seconds, and more preferably a layer of more than 4000 Gurley seconds.
  • the plastic laminate paper of the present invention is obtained by laminating the above-mentioned craft paper and the plastic film.
  • This mounting board extrudes a molten plastic film from the T-die of the extruder, and when the film is in a molten state, the paper is applied to both sides of the film. It is carried out by an extrusion lamination method in which the pressure is applied along one side and pressure is applied through a pressure port.
  • any low-density layer is always attached to the plastic film, regardless of the type of paper.
  • the triple-layered paper 11 of the second example since both outer surfaces 11a and 11a are layers with low airtightness, the work of checking the front and back of the paper at the time of lamination is not necessary. It becomes unnecessary.
  • the low-density and low-air-tight first layer 21 a is overlapped so as to be in contact with the plastic film.
  • the plastic finolems listed above include polypropylene, poly-4—methylpentene-1, polybuten-11, and polyethylene. Any non-polar polyolefin tetrafluoroethylene mouth ethylene hexafluoropropylene copolymer, ethylene tetrafluoroethylene A fluororesin having a thickness of 20 to 150 ⁇ m, such as a copolymer, is used.
  • the polypropylene homopolymer preferably the melt index has a specific melt viscosity of 5 to 50 g Z minutes.
  • a film made of a low-polypropylene polymer has a high adhesiveness to the craft paper, and the insulating properties of the obtained laminated paper are also good. I like it.
  • melt index of the polypropylene is less than 5
  • melt viscosity during melt extrusion of the polypropylene will increase, and the resin will be embedded in the irregularities on the surface of the craft paper. And the adhesive strength between polypropylene film 1 and the craft paper decreases. If the melt index exceeds 50, the melt viscosity will be too small, the back pressure during extrusion will not be stable, and the variation in the thickness of the laminated paper will increase.
  • polypropylene momopolymer has a better swelling property with respect to insulating oil than polymers such as random copolymer and block copolymer.
  • the total thickness of such plastic laminate paper may be in the range of 100 to 300 ⁇ m, and may be outside this range depending on the application of force.
  • the plastic paper laminated on the plastic film is used. Since the surface in contact with the plastic film is low in density, it is porous and has large irregularities on the surface, and when bonding with the plastic film, the molten plastic is Adhesion strength is improved due to better penetration into paper.
  • the above-described plastic laminating paper is wound a large number of times directly on a conductor or via a shielding layer or the like to form an insulator, and the insulator is shielded on the insulator.
  • Layers, sheaths, anticorrosion layers, etc., and the insulator is impregnated with insulating oil such as polybutene oil or alkylbenzene oil.
  • a cable impregnated with a high-viscosity insulating oil with a kinematic viscosity of 300 ° C or more at 30 ° C cannot be used to pressurize the insulating oil.
  • MIND Mass Imprenated Non-Draining
  • This power cable has excellent insulation characteristics, especially impulse breakdown strength. Also, when handling with the insulator exposed, such as when connecting cables, the plastic laminated paper does not separate from the plastic paper and the plastic film. .
  • the power cable of the present invention is suitable as a cable for DC power transmission and AC power transmission, and can also be used as a 0F cable for ultra-high voltage power transmission.
  • the low airtight side was toward the polypropylene film surface and the high airtight side was toward the surface.
  • this polypropylene laminating paper is wound on a conductor, and an oil-immersed insulator (JIS-C12320, Type 2 Alkali Benzene) with a thickness of about 1 mm is used. Oil impregnation) to form a model cable, and the positive impulse breakdown voltage of this model cable was measured.
  • Table 1 shows these results.
  • Table 1 Craft paper adhesive strength Inmeless Test number (g / 15mm width) Breaking strength
  • the low airtight layer has a thickness of 15 m and the high airtight layer has a thickness of 25 m.
  • JIS — C — 21 The immersion liquid conductivity according to 11 was 5 uS / cm, and the low airtight layer was directed to the polypropylene film surface and the high airtight layer was directed to the surface.
  • this polypropylene laminating paper is wound on a conductor to form an oil immersion insulator (JIS-C-1230, type 2 oil impregnated) with a thickness of about 1 mm.
  • JIS-C-1230, type 2 oil impregnated oil immersion insulator
  • Table 2 shows these results.
  • the airtightness of ordinary single-layer paper and the low airtight layer is less than 200 Galle seconds, and the airtightness of the high airtight layer is more than 2000 Galle seconds.
  • Double paper was used in which the thickness of the low airtight layer and the thickness of the high airtight layer were respectively changed.
  • the low airtight layer was directed to the polypropylene film surface and the high airtight layer was directed to the surface.
  • this polypropylene wrap laminate paper is wound on a conductor and an oil-immersed insulator (JIS-C-232, class 2 No. 1 Alkylbenzene oil impregnated with a thickness of about 1 mm) is applied. ) was formed to create a model cable, and the positive impulse breakdown voltage of this model cable was measured.
  • an oil-immersed insulator JIS-C-232, class 2 No. 1 Alkylbenzene oil impregnated with a thickness of about 1 mm
  • the thickness of the low airtight layer was 15 m
  • the thickness of the high airtight layer was 25 2 ⁇
  • the airtightness of each layer was changed.
  • Polypropylene laminate paper was manufactured in the same manner except that the adhesive was used, and the adhesive strength and the positive impulse breakdown voltage were measured in the same manner.
  • Table 4 shows the results.
  • Polypropylene homopolymer with a density of 0.9 cm 3 is melt extruded at a temperature of 280 ° C and melted. It is a propylene film, which has a density of 0.758 on both sides while it is in a molten state. 0 1 3, thickness 4 0 // placed along a click La oice paper 01, the total thickness and roll pressure bonding to produce a port re pro Pi les Nra Mi ne one preparative paper 1 7 0 m.
  • One low-density layer of triple-kraft paper was directed onto the polypropylene film.
  • the adhesive strength (180 degree separation test) was measured.
  • wrap this polypropylene laminating paper on a conductor A model cable was formed by forming an oil immersion insulator (JIS-C — 232, impregnated with type 2 alkylbenzene oil) with a thickness of about 1 mm, and the positive polarity of this model cable was measured.
  • the impulse breakdown voltage was measured.
  • the low-density layer has a thickness of 15 m and the high-density layer has a thickness of 2.
  • JIS-C—2 11 1 by deionized water washing An immersion liquid having a conductivity of 5 S / cm was used, with the low-density layer facing the polypropylene film surface and the high-density layer facing the surface. The density of the low density layer and the density of the high density layer were changed.
  • This polypropylene laminating paper is immersed in an alkylbenzene oil (JIS-I-C-232, Class 2 No. 1 oil) at 100 ° C for 24 hours, The adhesive strength at the interface between the polypropylene film and the double-kraft paper (180 degree separation test) was measured.
  • this polypropylene laminating paper is wound on a conductor to form an oil-immersed insulator (JIS-C-232, 2 type 1 oil impregnated) with a thickness of about lmm.
  • JIS-C-232, 2 type 1 oil impregnated oil-immersed insulator
  • a low-density layer (thickness of 10 m) with an air density of 20 Gale seconds or less and a high air-tightness of 100 G
  • the layer (thickness: 30 m) was used, and a low air-tight layer was mounted on a propylene film.
  • the adhesive strength (180 degree separation test) of the interface between the polypropylene polypropylene laminate and the craft paper of the obtained polypropylene laminate paper was measured.
  • Table 7 shows the results. Test number Polypropylene meso-tore adhesive strength Remarks Index (g / 10 min) (g / 15 m width)
  • the 0F cable using the plastic laminate paper of the present invention is particularly excellent in impulse breakdown characteristics, and is used as a high-voltage or ultra-high-voltage DC or AC power transmission cable. You.
  • the adhesive strength between the craft paper and the laminated paper is high, when winding the laminated paper tape, they may come apart when connecting a cable, which may reduce workability. There is no. The scope of the claims
  • Plastic paper for oil immersion insulation The plastic paper to be stuck on the plastic melt extrusion film is made of two or more layers of paper with different airtightness.
  • a plastic paper for plastic laminate paper characterized in that the paper is multi-layered paper.
  • Multi-layer paper consisting of two or more layers of paper with different airtightness, which is bonded to the plastic melt extrusion film of plastic immersion paper for oil immersion insulation.
  • the thickness of the low airtight layer is 5 m or more, and the thickness of the high airtight layer is 15 m or more, for plastic laminate paper. Craft paper.
  • the plastic paper to be bonded to the plastic melt-extruded film of plastic immersion paper for oil immersion insulation is a multi-layer paper consisting of three or more layers of paper with different air densities.
  • Plastic paper for plastic mineral paper characterized in that both outer surfaces are made of a layer with low airtightness and the inside is made up of a layer with high airtightness.
  • the airtightness of the layers on both outer surfaces of the multi-layer paper is 500 gale seconds or less, and the airtightness of the inner layer is 100 gale seconds or more.
  • Plastic paper for the described plastic laminate paper is 500 gale seconds or less, and the airtightness of the inner layer is 100 gale seconds or more.
  • the paper to be laminated is a multi-layer paper consisting of two or more layers of paper with different air densities, the high air density layer is Fourdrinier paper, and the low air density layer is Marumisa paper. Plastic paper for plastic laminate paper that features this feature.
  • plastic laminate paper according to any one of claims 1 to 9, wherein the low-density layer is in contact with the plastic film surface.
  • a plastic laminated paper for oil immersion insulation characterized by being laminated to a plastic melt extrusion film.
  • plastic laminate for oil immersion insulation according to claim 10, characterized in that said plastic melt extrusion film is a polypropylene film. Paper.
  • the polypropylene phenol is made of a polypropylene homopolymer having a melt index of 5 to 50 g Z 10 minutes. 11.

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Laminated Bodies (AREA)
  • Paper (AREA)

Abstract

L'invention concerne un papier stratifié en plastique isolant imprégné d'huile utilisé sous forme de matériau isolant imprégné d'huile, par exemple dans un câble à huile fluide, un papier kraft utilisé dans ce papier stratifié, et un câble électrique réalisé au moyen de ce papier stratifié. L'invention vise à améliorer les propriétés de rupture diélectrique impulsionnelle du matériau isolant imprégné d'huile obtenu au moyen dudit papier stratifié comprenant le papier kraft et un film plastique, par une augmentation de la résistance des liaisons entre le papier kraft et le film plastique. A cet effet, on utilise un papier multicouche dont au moins deux couches de papier présentent des perméabilités à l'air différentes. Une couche à faible perméabilité à l'air est inférieure ou égale à 5000 Gurley/s, tandis qu'une couche à grande perméabilité à l'air est supérieure ou égale à 1000 Gurley/s.
PCT/JP1996/003853 1996-12-27 1996-12-27 Papier stratifie en plastique isolant impregne d'huile, papier kraft utilise dans du papier stratifie et cable electrique realise au moyen de ce papier WO1998029878A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP1996/003853 WO1998029878A1 (fr) 1996-12-27 1996-12-27 Papier stratifie en plastique isolant impregne d'huile, papier kraft utilise dans du papier stratifie et cable electrique realise au moyen de ce papier
EP96942664A EP0889485A4 (fr) 1996-12-27 1996-12-27 Papier stratifie en plastique isolant impregne d'huile, papier kraft utilise dans du papier stratifie et cable electrique realise au moyen de ce papier
NO983927A NO983927L (no) 1996-12-27 1998-08-26 Plastlaminert papir for olje-impregnerings-isolasjon, et kraftpapir brukt ved dette og en elektrisk kabel hvor det anvendes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1996/003853 WO1998029878A1 (fr) 1996-12-27 1996-12-27 Papier stratifie en plastique isolant impregne d'huile, papier kraft utilise dans du papier stratifie et cable electrique realise au moyen de ce papier

Publications (1)

Publication Number Publication Date
WO1998029878A1 true WO1998029878A1 (fr) 1998-07-09

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PCT/JP1996/003853 WO1998029878A1 (fr) 1996-12-27 1996-12-27 Papier stratifie en plastique isolant impregne d'huile, papier kraft utilise dans du papier stratifie et cable electrique realise au moyen de ce papier

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WO (1) WO1998029878A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602007008595D1 (de) * 2007-12-27 2010-09-30 Abb Research Ltd Elektrisches Isoliermaterial, elektrische Vorrichtung mit dem Isoliermaterial und Wandler

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57134813A (en) * 1981-02-12 1982-08-20 Fujikura Ltd Laminated insulating tape
JPS59134503A (ja) * 1983-01-24 1984-08-02 古河電気工業株式会社 複合絶縁紙
JPS6136327B2 (fr) * 1980-03-14 1986-08-18 Fujikura Cable Works Ltd
JPS6355170B2 (fr) * 1981-12-15 1988-11-01 Toray Industries

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0935562A (ja) * 1995-07-17 1997-02-07 Fujikura Ltd 油浸絶縁用ポリプロピレンラミネート紙およびこれを用いた電力ケーブル

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6136327B2 (fr) * 1980-03-14 1986-08-18 Fujikura Cable Works Ltd
JPS57134813A (en) * 1981-02-12 1982-08-20 Fujikura Ltd Laminated insulating tape
JPS6355170B2 (fr) * 1981-12-15 1988-11-01 Toray Industries
JPS59134503A (ja) * 1983-01-24 1984-08-02 古河電気工業株式会社 複合絶縁紙

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0889485A4 *

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EP0889485A4 (fr) 2000-07-12

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