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公开(公告)号：JPH1022109A
公开(公告)日：1998-01-23
申请号：JP7599197
申请日：1997-03-27
Applicant: ABB RESEARCH LTD
Inventor： GLATZ-REICHENBACH JOACHIM DR , GREUTER FELIX DR , MAUTHE GERHARD , KLAUS SCHUELER , SKIUDHOJ JORGEN , RALF STRUMPLLER , ZDENEK PELANEK
Abstract: PROBLEM TO BE SOLVED: To provide a current-limiting resistor having PTC characteristics which can be manufactured simply and at a low cost and which exhibits a large current-carrying capacity, a wide range of voltage and a high reliability of operation. SOLUTION: A current-limiting resistor is provided with two connecting electrodes 1 and 2 which are placed in parallel to each other and a resistor 3 having PTC characteristics which is in contact with the connecting electrodes 1 and 2 on its flat surface. A varistor 40 is conductively in contact with the resistor 3. The resistor 3 includes first two contact surfaces 50 and 51 and a first answering part 60. The answering part is connected in parallel to the first varistor 40 through the two contact surfaces 50 and 51 and carries out a PTC shift above the threshold of the current passing in the resistor.
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公开(公告)号：DE19702094A1
公开(公告)日：1998-07-23
申请号：DE19702094
申请日：1997-01-22
Applicant: ABB RESEARCH LTD
Inventor： DULLNI EDGAR DR , GLATZ-REICHENBACH JOACHIM DR , KUHLEFELT JAN , LOITZL RUZICA , PELANEK ZDENEK , SKINDHOEJ JOERGEN DR , STRUEMPLER RALPH DR
Abstract: The circuit breaker device (L) has at least one current conductor to which a high voltage is applied. A series circuit is arranged in the path of the current conductor. The series circuit includes a switch point and a current limiting element including at least one PTC resistor and at least one parallel connected varistor. A device for operating the switch point cooperates with the current limiting element. The current limiting element has n parallel circuits connected in series. Each parallel circuit has at least one PTC resistor and at least one varistor connected in parallel. n is a natural number greater than 1. A current sensor acting on an input of the switch actuator is arranged in the current path of the current conductor.
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公开(公告)号：DE19612841A1
公开(公告)日：1997-10-02
申请号：DE19612841
申请日：1996-03-30
Applicant: ABB RESEARCH LTD
Inventor： GLATZ-REICHENBACH JOACHIM DR , GREUTER FELIX DR , MAUTHE GERHARD , PELANEK ZDENEK , SCHUELER CLAUS DR , SKINDHOJ JORGEN DR , STRUEMPLER RALF DR
Abstract: The resistance has a pair of parallel terminal electrodes (1,2) in flat contact with a resistance body (3) which has a positive temperature coefficient characteristic. A varistor (40) lies in electrical contact with the resistance body which has 2 contact surfaces (50,51). The response point (60) of the resistance body is connected in parallel with the varistor through the surfaces. A number of series connected varistors (41,42,43,44) may contact respective meanders of a zigzag resistance body between the parallel terminal electrodes via respective contact surfaces (52,53).
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公开(公告)号：AT352846T
公开(公告)日：2007-02-15
申请号：AT00810069
申请日：2000-01-25
Applicant: ABB RESEARCH LTD
Inventor： GLATZ-REICHENBACH JOACHIM DR , STRUEMPLER RALF DR
IPC: H01C7/02
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.
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公开(公告)号：DE19754976A1
公开(公告)日：1999-06-17
申请号：DE19754976
申请日：1997-12-11
Applicant: ABB RESEARCH LTD
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Patent Agency Ranking
公开(公告)号：DE19626238A1
公开(公告)日：1998-01-02
申请号：DE19626238
申请日：1996-06-29
Applicant: ABB RESEARCH LTD
Inventor： STRUEMPLER RALF DR , GARBIN ANDREAS , GLATZ-REICHENBACH JOACHIM DR , LOITZL RUZIKA , SKINDHOEJ JOERGEN
IPC: H01C7/02
Abstract: The resistance element has a positive temperature coefficient body (1), provided with electrodes (2a,2b) at its opposite ends. the section of the body between the end electrodes has a cross-section which tapers inwards from each end towards a minimum cross-section at the centre. The tapered parts (7a,7b) of the body on either side of the centre line (6) have a concave cross-sectional profile in the longitudinal direction.
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公开(公告)号：DE60033126T2
公开(公告)日：2007-10-11
申请号：DE60033126
申请日：2000-01-25
Applicant: ABB RESEARCH LTD
Inventor： GLATZ-REICHENBACH JOACHIM DR , STRUEMPLER RALF DR
IPC: H01C7/02
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.
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公开(公告)号：DE60033126D1
公开(公告)日：2007-03-15
申请号：DE60033126
申请日：2000-01-25
Applicant: ABB RESEARCH LTD
Inventor： GLATZ-REICHENBACH JOACHIM DR , STRUEMPLER RALF DR
IPC: H01C7/02
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.
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公开(公告)号：AT262726T
公开(公告)日：2004-04-15
申请号：AT98811171
申请日：1998-11-26
Applicant: ABB RESEARCH LTD
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公开(公告)号：CZ20010238A3
公开(公告)日：2002-06-12
申请号：CZ20010238
申请日：2001-01-19
Applicant: ABB RESEARCH LTD
Inventor： GLATZ-REICHENBACH JOACHIM DR , STRUMPLER RALF DR
IPC: H01C7/02
CPC classification number: H01C7/027
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