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专利名称：PROTECTIVE CIRCUIT FOR PROTECTION OF
AN APPLIANCE, IN PARTICULAR ANELECTRIC MOTOR, AGAINST THERMALOVERLOADING
发明人：FRITSCH, ANDREAS,KOLLER, JOSEF,MEIER,
MARKUS,SEITZ, JOHANN,SPINDLER,KONRAD
申请号：EP06791357.4申请日：20060906公开号：EP2059986A1公开日：20090520
摘要：The invention relates to a protective circuit (1) for protection of an appliance, inparticular of an electric motor, against thermal overloading, comprising a first and asecond terminal (2, 3) for connecting a temperature detection element (4, 11); adetection unit (6) for detecting whether a resistance value of the temperature detectorelement (4, 11), which is connected between the first and the second terminals (2, 3), is ina first or a second resistance range; a short-circuit detector for identifying whether thereis a short circuit between the first and the second terminals (2, 3); signalling outputs (8, 9)for emitting signal messages to an evaluation unit (14) when the detected resistancevalue is in the second resistance range and/or when a short circuit has been identified bythe short-circuit detector (10); and a third terminal (12), which is connected to the secondterminal via a predetermined resistance.
申请人：SIEMENS AKTIENGESELLSCHAFT
地址：Wittelsbacherplatz 2 80333 München DE
国籍：DE
代理机构：Wolff, Harry
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