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    21.
    发明专利
    未知

    公开(公告)号：DE602004015567D1

    公开(公告)日：2008-09-18

    申请号：DE602004015567

    申请日：2004-04-06

    Applicant: ABB RESEARCH LTD

    Inventor： GRAMESPACHER HANSJOERG ,  HAGEMEISTER MICHAEL ,  KLUGE-WEISS PETRA ,  GREUTER FELIX ,  DONZEL LISE ,  KESSLER RETO

    IPC: H01C7/10 ,  C04B14/04 ,  H01C7/00 ,  H01C7/112 ,  H01C17/065

    Abstract: The invention relates to a nonlinear electrical material with improved microvaristor filler (1'), to devices and electrical apparatuses comprising such nonlinear electrical material and to a production method thereof. According to invention, the filler (1') comprises larger spherical particles (5) and smaller irregular particles (6) that are arranged interstitially and provide non-point-like and/or multiple contact areas (56, 56a, 56b, 66) owing to their irregular outer shape comprising edges and faces. Embodiments, among other things, relate to: spherical particles (5) being calcinated and broken-up to retain their original shape; irregular, spikly shaped, particles (6) obtained by calcinating or sintering and crushing or fracturing granules or blocks; and addition of a third filler fraction. Advantages, among others, are: higher filler contents, more and more durable inter-particle contacts (56, 56a, 56b, 66), enlarged effective micro-contact area, and improved electrical performance of the nonlinear electrical material.

    NON-LINEAR RHEOSTAT OF LAMELLAR PARAMETERS AND METHOD OF MAKING SAME
    22.
    发明专利
    NON-LINEAR RHEOSTAT OF LAMELLAR PARAMETERS AND METHOD OF MAKING SAME 未知

    公开(公告)号：PL190068B1

    公开(公告)日：2005-10-31

    申请号：PL33769699

    申请日：1999-04-23

    Applicant: ABB RESEARCH LTD

    Inventor： KLUGE-WEISS PETER ,  GREUTER FELIX ,  STRUEMPLER RALF

    IPC: H01C7/10 ,  H01C7/112 ,  H01C7/12

    Abstract: The nonlinear resistor has varistor behaviour and has a matrix and a filler in powder form which is embedded in the matrix. The filler contains sintered varistor granules with predominantly spherical particles of doped metal oxide. These particles are made up of crystalline grains separated from one another by grain boundaries. The filler also contains electrically conductive particles, which cover at most a part of the surfaces of the spherical particles, and/or the varistor granules contain two fractions of particles with different sizes, of which the particles in the first fraction have larger diameters than the particles in the second fraction and are arranged essentially in the form of close sphere packing and the particles in the second fraction fill the interstices formed by the sphere packing.The resistor can be produced straightforwardly and cost-effectively and is distinguished by a high nonlinearity coefficient, which is desired for a good protection characteristic, and by a high power acceptance.

    23.
    发明专利
    未知

    公开(公告)号：DE59912488D1

    公开(公告)日：2005-10-06

    申请号：DE59912488

    申请日：1999-04-23

    Applicant: ABB RESEARCH LTD

    Inventor： KLUGE-WEISS PETRA ,  GREUTER FELIX ,  STRUEMPLER RALF

    IPC: H01C7/10 ,  H01C7/112 ,  H01C7/12

    Abstract: The nonlinear resistor has varistor behaviour and has a matrix and a filler in powder form which is embedded in the matrix. The filler contains sintered varistor granules with predominantly spherical particles of doped metal oxide. These particles are made up of crystalline grains separated from one another by grain boundaries. The filler also contains electrically conductive particles, which cover at most a part of the surfaces of the spherical particles, and/or the varistor granules contain two fractions of particles with different sizes, of which the particles in the first fraction have larger diameters than the particles in the second fraction and are arranged essentially in the form of close sphere packing and the particles in the second fraction fill the interstices formed by the sphere packing.The resistor can be produced straightforwardly and cost-effectively and is distinguished by a high nonlinearity coefficient, which is desired for a good protection characteristic, and by a high power acceptance.

    24.
    发明专利
    未知

    公开(公告)号：DE50001507D1

    公开(公告)日：2003-04-24

    申请号：DE50001507

    申请日：2000-06-13

    Applicant: ABB RESEARCH LTD

    Inventor： GREUTER FELIX ,  CHRISTEN THOMAS ,  KLUGE-WEISS PETRA

    IPC: H02G1/14 ,  H02G15/06 ,  H02G15/064 ,  H02G15/072

    Abstract: The bushing has an electrical conductor (1) to which high voltage can be applied. One section of the electrical conductor (1) is surrounded by a varistor arrangement (9). The bushing also contains two electrical connections (4, 6), one (6) of which can be connected to high voltage and the other (4) can be connected to ground, a bushing insulator (5) provided between the electrical conductor (1) and the varistor arrangement (9), and a clamping apparatus (11) which applies a contact force to the electrical connections (4, 6) and to the varistor arrangement (9) located in between them like a sandwich. The clamping apparatus has an insulating part which applies the contact force to the two electrical connections. The bushing insulator is in the form of a molding and has a supporting element, provided with a guide surface, for a contact (1a) (which is connected to the electrical conductor (1)) in a plug connection to a cable or to an apparatus bushing of an electrical apparatus.

    25.
    发明专利
    未知

    公开(公告)号：AT235118T

    公开(公告)日：2003-04-15

    申请号：AT00930959

    申请日：2000-06-13

    Applicant: ABB RESEARCH LTD

    Inventor： GREUTER FELIX ,  CHRISTEN THOMAS ,  KLUGE-WEISS PETRA

    IPC: H02G1/14 ,  H02G15/06 ,  H02G15/064 ,  H02G15/072

    Abstract: The bushing has an electrical conductor (1) to which high voltage can be applied. One section of the electrical conductor (1) is surrounded by a varistor arrangement (9). The bushing also contains two electrical connections (4, 6), one (6) of which can be connected to high voltage and the other (4) can be connected to ground, a bushing insulator (5) provided between the electrical conductor (1) and the varistor arrangement (9), and a clamping apparatus (11) which applies a contact force to the electrical connections (4, 6) and to the varistor arrangement (9) located in between them like a sandwich. The clamping apparatus has an insulating part which applies the contact force to the two electrical connections. The bushing insulator is in the form of a molding and has a supporting element, provided with a guide surface, for a contact (1a) (which is connected to the electrical conductor (1)) in a plug connection to a cable or to an apparatus bushing of an electrical apparatus.

    HIGH VOLTAGE LEAD-THROUGH
    26.
    发明专利
    HIGH VOLTAGE LEAD-THROUGH 未知

    公开(公告)号：HU0201504A2

    公开(公告)日：2002-08-28

    申请号：HU0201504

    申请日：2000-06-13

    Applicant: ABB RESEARCH LTD

    Inventor： CHRISTEN THOMAS ,  GREUTER FELIX ,  KLUGE-WEISS PETRA

    IPC: H02G1/14 ,  H02G15/06 ,  H02G15/064 ,  H02G15/072

    Abstract: The bushing has an electrical conductor (1) to which high voltage can be applied. One section of the electrical conductor (1) is surrounded by a varistor arrangement (9). The bushing also contains two electrical connections (4, 6), one (6) of which can be connected to high voltage and the other (4) can be connected to ground, a bushing insulator (5) provided between the electrical conductor (1) and the varistor arrangement (9), and a clamping apparatus (11) which applies a contact force to the electrical connections (4, 6) and to the varistor arrangement (9) located in between them like a sandwich. The clamping apparatus has an insulating part which applies the contact force to the two electrical connections. The bushing insulator is in the form of a molding and has a supporting element, provided with a guide surface, for a contact (1a) (which is connected to the electrical conductor (1)) in a plug connection to a cable or to an apparatus bushing of an electrical apparatus.

    High voltage lead-through
    28.
    发明专利
    High voltage lead-through 未知

    公开(公告)号：AU4908200A

    公开(公告)日：2001-01-02

    申请号：AU4908200

    申请日：2000-06-13

    Applicant: ABB RESEARCH LTD

    Inventor： GREUTER FELIX ,  CHRISTEN THOMAS ,  KLUGE-WEISS PETRA

    IPC: H02G1/14 ,  H02G15/06 ,  H02G15/064 ,  H02G15/072

    Abstract: The bushing has an electrical conductor (1) to which high voltage can be applied. One section of the electrical conductor (1) is surrounded by a varistor arrangement (9). The bushing also contains two electrical connections (4, 6), one (6) of which can be connected to high voltage and the other (4) can be connected to ground, a bushing insulator (5) provided between the electrical conductor (1) and the varistor arrangement (9), and a clamping apparatus (11) which applies a contact force to the electrical connections (4, 6) and to the varistor arrangement (9) located in between them like a sandwich. The clamping apparatus has an insulating part which applies the contact force to the two electrical connections. The bushing insulator is in the form of a molding and has a supporting element, provided with a guide surface, for a contact (1a) (which is connected to the electrical conductor (1)) in a plug connection to a cable or to an apparatus bushing of an electrical apparatus.

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