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Protection system for electric motors

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专利名称:Protection system for electric motors发明人:Richard J. Kuntner,James C. Vander Meer申请号:US06/113008申请日:19800117公开号:US04288828A公开日:19810908

摘要:A solid state protection system for AC electric motors driving high inertia loadsrequiring long acceleration times. An electroresponsive relay (OL) is separatelyresponsive to permissible acceleration time, circuitry (DT, DC), acceleration overloadcurrent circuitry (ACA), and to normal running overload current circuitry (ACR). Up-to-speed detector and latch circuits (USD, USL) deactivate the acceleration time circuitry andoverload current circuitry, and activate the running overload current circuitry uponattainment of normal running speed by the motor. The response levels of the overloadand time response circuits are individually settable.

申请人:EATON CORPORATION

代理人:R. J. McCloskey,H. R. Rather

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