21.
    发明专利
    未知

    公开(公告)号:BRPI0619897A2

    公开(公告)日:2011-10-25

    申请号:BRPI0619897

    申请日:2006-10-10

    Abstract: The high-voltage bushing (1) has a conductor (2) and a core (3) surrounding the conductor (2), wherein the core (3) comprises a sheet-like spacer(4), which spacer (4) is impregnated with an electrically insulating matrix material (6). The spacer (4) is wound in spiral form around an axis (A), the axis (A) being defined through the shape of the conductor (2). Thus, a multitude of neighbouring layers is formed. The core (3) further comprises equalization elements (5) in appropriate radial distances to the axis (A). It is characterized in that the equalization elements (5) comprise electrically conductive layers (51), which layers (51) have openings (9), through which openings (9) the matrix material (6) can penetrate, and in that the equalization elements (5) are applied to the core (3) separately from the spacer (4). Preferably, the electrically conductive layers (51) are net-shaped, grid-shaped, meshed or perforated. The openings (9) are fillable with the matrix material (6), preferably a particle-filled resin (6) can be used.

    23.
    发明专利
    未知

    公开(公告)号:AT469426T

    公开(公告)日:2010-06-15

    申请号:AT05405586

    申请日:2005-10-14

    Abstract: Electrical insulation system based on poly(butylene terephthalate), optionally containing further additives, wherein said poly(butylene terephthalate) (i) has been obtained by polymerizing a cyclic low molecular weight oligomeric poly(butylene terephthalate) resin, contains (ii) at least one filler material or a mixture of such filler materials in an amount of up to 85% by weight, and (iii) at least one hydrophobic compound or a mixture of such compounds, preferably an organopolysiloxane, in an amount of 0.1% to 10% by weight, calculated to the weight of the insulation system; method of making said electrical insulation systems.

    24.
    发明专利
    未知

    公开(公告)号:DE602007004946D1

    公开(公告)日:2010-04-08

    申请号:DE602007004946

    申请日:2007-04-03

    Abstract: Curable epoxy resin composition, which comprises: (i) at least one diglycidyl ether of bisphenol A (DGEBA) and at least one diglycidyl ethers of bisphenol F (DGEBF) as epoxy resins, wherein the weight ratio of DGEBA : DGEBF is within the range of about 15:85 to 45:55; (ii) an anhydride hardener; (iii) at least one plasticizer; (iv) optionally a catalyst, at least one filler material and/or further additives; and wherein Lhe dynamic complex viscosity value (· * ) of said composition is within the range of 0.1 to 20 Pa.s; a process for making said composition and electrical articles containing an electrical insulation system made from said composition.

    BOBINADOS DE BOBINA AISLADOS CON RESINA SIN MOLDE.

    公开(公告)号:ES2331085T3

    公开(公告)日:2009-12-21

    申请号:ES05782658

    申请日:2005-09-20

    Abstract: Un método para fabricar una bobina aislada con resina (1), en el que la bobina (1) está reforzada con fibras dispuestas sobre la bobina (1) en una matriz polimérica sólida (4), en el que una capa de bobinado (3) y una capa de fibra/polímero (4) se aplican alternativa y repetidamente, comprendiendo la aplicación de la capa de fibra/polímero (4) las siguientes etapas ejecutadas continuamente: - suministrar continuamente al menos una cinta continua (2; 2a, 2b) que comprende fibras y una matriz polimérica sólida, - fundir o activar una sección de al menos una cinta (2; 2a, 2b) durante el suministro, - presionar la sección fundida o activada de la cinta (2; 2a, 2b) sobre la bobina (1) durante el suministro, y - enfriar la cinta (2; 2a, 2b) después de dejar la zona de calentamiento o activación y presión.

    27.
    发明专利
    未知

    公开(公告)号:DE602005015901D1

    公开(公告)日:2009-09-17

    申请号:DE602005015901

    申请日:2005-09-20

    Abstract: Mold-free resin-insulated coil windings are obtained by applying continuous fibers embedded in a quasi-solid-state epoxy-resin matrix, e.g. in the form of a tape, to the coil windings. The tape is locally heated up to the melting point of its polymer matrix, and is subsequently pressed against the winding body. The heated and fused resin of the tape, which is pressed onto the coil, flows under pressure into the voids and gaps between the coil windings and fills them up, thereby hermetically insulating the coil windings. After leaving the heating and pressing apparatus the fused epoxy resin becomes solid again. The resulting curing process is thus considerably simplified and shortened, compared to the state of the art.

    28.
    发明专利
    未知

    公开(公告)号:DK1635365T3

    公开(公告)日:2009-03-16

    申请号:DK04405563

    申请日:2004-09-09

    Abstract: Dry-type transformer, preferably dry-type distribution transformer, wherein the transformer coils are encapsulated with a cured mineral filler containing cyanate ester resin composition, which optionally is a cured mineral filler containing epoxy modified cyanate ester resin composition, method of making the insulating composition and the non-cured composition.

    30.
    发明专利
    未知

    公开(公告)号:DE50201090D1

    公开(公告)日:2004-10-28

    申请号:DE50201090

    申请日:2002-01-28

    Abstract: A curable casting composition based on epoxide resins shows an unexpectedly high curing rate when the casting composition contains (i) an epoxide group with at least one aminoglycidyl group in the molecule, (ii) a curing agent and (iii) a fluorine containing surfactant (FCS). A curable casting composition based on epoxide resins shows an unexpectedly high curing rate when the casting composition contains: (i) an epoxide group with at least one aminoglycidyl group in the molecule, (ii) a curing agent and (iii) a fluorine containing surfactant (FCS) of formula (I) in which the hydrophobic residue has the formula (Ia). R-(C(R)(R1)-C(R)(R1))x-A (I) R-(C(R)(R1)-C(R)(R1))x- (Ia) A = the hydrophobic part of the surfactant; R and R1 = H or F; and x = 2-12, preferably 3-5. Independent claims are also included for the following: (1) coatings, adhesives, fiber reinforced plastics, structural parts and electrical insulation obtained from the composition; (2) a process for preparation of the composition by mixing the components and additives in any order, preferably by premixing component (iii) with components (i) or (ii) to give the finished composition.

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