为企业提供“精密机械设备、电器控制、传动系统及设备改造”等方面的服务。
For the enterprise to provide "precision machinery equipment, electrical control and transmission system and equipment modification," and so on.
介绍了一种用PLC改造继电器控制系统的方法。
The method of transforming the relay control system with PLC was introduced.
分析了箱式电阻炉电气系统的工作原理及其局限性，介绍了采用交流固态继电器对电气系统进行改造的原理和实践。
This paper analyzed the working principle and limitation of electrical system of box resistor-stove. And introduced the principle and practice to remake this system with ac SSR.
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