发明名称 |
Protective circuit for protection of an appliance, in particular an electric motor, against thermal overloading |
摘要 |
At least one embodiment of the invention relates to a protective circuit for protection of an appliance, in particular of an electric motor, against thermal overloading. In at least one embodiment, the protective circuit includes a first and a second terminal for connecting a temperature detection element; a detection unit for detecting whether a resistance value of the temperature detector element which is connected between the first and the second terminals, is in a first or a second resistance range; a short-circuit detector for identifying whether there is a short circuit between the first and the second terminals; signaling outputs for emitting signal messages to an evaluation unit when the detected resistance value is in the second resistance range and/or when a short circuit has been identified by the short-circuit detector; and a third terminal, which is connected to the second terminal via a predetermined resistance.
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申请公布号 |
US7889462(B2) |
申请公布日期 |
2011.02.15 |
申请号 |
US20060310677 |
申请日期 |
2006.09.06 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
SPINDLER KONRAD;KOLLER JOSEF;MEIER MARKUS;SEITZ JOHANN;FRITSCH ANDREAS |
分类号 |
H02H5/04 |
主分类号 |
H02H5/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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