发明名称 |
Protection device for electric motors |
摘要 |
<p>The protection device has a sensor circuit with a positive temperature coefficient sensor, and another positive temperature coefficient sensor whose rated operating temperature is bigger than the rated operating temperature of the former positive temperature coefficient sensor. A loosening tool is provided with an evaluation device for evaluating the sensor signal emitted on the basis of the total resistance of the sensor circuit and for generating an output signal for the loosening tool depending on the sensor signal.</p> |
申请公布号 |
EP2187494(A2) |
申请公布日期 |
2010.05.19 |
申请号 |
EP20090173817 |
申请日期 |
2009.10.22 |
申请人 |
KRIWAN INDUSTRIE-ELEKTRONIK GMBH |
发明人 |
KRIWAN, FRIEDRICH;PENG, XIAOMING |
分类号 |
H02H7/085;G01R31/34;H02H5/04;H02H9/02 |
主分类号 |
H02H7/085 |
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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