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    51.
    发明专利
    未知

    公开(公告)号：DE60126279T2

    公开(公告)日：2007-10-31

    申请号：DE60126279

    申请日：2001-04-24

    Applicant: ABB RESEARCH LTD

    Inventor： STRUEMPLER RALF ,  LOITZL-JELENIC RUZICA ,  GLATZ-REICHENBACH JOACHIM

    IPC: H01C17/00 ,  H01C7/02 ,  H01C7/12

    Abstract: The invention relates to a novel method of producing a resistor device comprising a PTC-polymer element 2 and a varistor element 4. Both elements are moulded in a common moulding process using one common mould. Preferred is co-injection moulding. The invention further relates to the resistor device thus produced and a current limit means including this resistor device and a switch (fig. 4).

    52.
    发明专利
    未知

    公开(公告)号：DE60211373D1

    公开(公告)日：2006-06-14

    申请号：DE60211373

    申请日：2002-11-18

    Applicant: ABB RESEARCH LTD

    Inventor： STRUEMPLER RALF ,  GLATZ-REICHENBACH JOACHIM

    IPC: G01R19/155 ,  G01R13/40

    Abstract: The invention is concerned with a binary voltage indicator for use with high- or medium voltage equipment. The indicator comprises a photoactive layer (5) which changes its reflectivity or emissivity when subjected to an electric field and which is applied directly onto the surface of a conductor. The photoactive layer is based on materials as used for low-voltage displays, such as electrophoretic films.

    NON-LINEAR RHEOSTAT OF LAMELLAR PARAMETERS AND METHOD OF MAKING SAME
    53.
    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.

    54.
    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.

    57.
    发明专利
    未知

    公开(公告)号：NO20010426L

    公开(公告)日：2001-07-26

    申请号：NO20010426

    申请日：2001-01-24

    Applicant: ABB RESEARCH LTD

    Inventor： GLATZ-REICHENBACH JOACHIM ,  STRUEMPLER RALF

    IPC: H01C7/02 ,  H01H33/16 ,  H01H3/08 ,  H01H37/74 ,  H01H71/40 ,  H01C7/10 ,  H01C7/12 ,  H02H9/04 ,  H02H9/02

    Abstract: The invention relates to an electrical device with a PTC polymer element having a constriction. The constriction defines a web extending in a main current direction over a length longer than in the prior art, namely longer than 5 mm, preferably longer than 15 mm. Further, the aperture angle of the PTC polymer material at the ends of the web is larger than 100 DEG . A preferred choice of material is given, further. The invention achieves very high voltage-withstand capabilities.

    59.
    发明专利
    未知

    公开(公告)号：NO20010717D0

    公开(公告)日：2001-02-12

    申请号：NO20010717

    申请日：2001-02-12

    Applicant: ABB RESEARCH LTD

    Inventor： RAJALA ERKKI ,  STRUEMPLER RALF ,  GLATZ-REICHENBACH JOACHIM ,  JOKINIEMI TIMO

    IPC: H02H3/04 ,  H02H9/02 ,  H02H

    Abstract: The invention relates to an apparatus for limiting an electrical current by using a PTC resistor being monitored by a monitor circuit. According to the invention, the monitor circuit issues a signal only after detecting the status of the PTC resistor for a defined time period after a PTC resistance change.

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