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介绍了C8051F040单片机的性能特点和电机保护的基本原理,给出了一种基于C8051F040单片机为控制核心的三相异步电动机智能监视保护装置的硬件设计。通过比较显示,基于C8051F040单片机的BL—C型电机保护装置比基于普通8051系列单片机的保护装置具有更高的性价比。
The performance characteristics of C8051F040 and the basic principle of motor protection are introduced. A hardware design of intelligent monitoring and protection device for three-phase asynchronous motor based on C8051F040 is given. By comparison, based on C8051F040 microcontroller BL-C-type motor protection device based on the average 8051-based microcontroller protection device has a higher cost.