-
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
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.
-
公开(公告)号：PL337696A1
公开(公告)日：2000-08-28
申请号：PL33769699
申请日：1999-04-23
Applicant: ABB RESEARCH LTD
Inventor： KLUGE-WEISS PETER , GREUTER FELIX , STRUEMPLER RALF
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.
-
Search Results
2
records
(took 0.022 seconds)
