• 1. WATSN: 双电源自动转换开关
• 2. WATSN IN: 双电源自动转换开关

• 1.The WATSN series automatic transferring switch of power supply (ATS) and its structure features as well as main specifications were introduced, especially the operating principle of the controller.
  系统地介绍了施耐德万高公司生产的WATSN系列自动转换开关（ATS）的结构及特点、性能指标及主要技术参数等，并着重阐述了其控制器的工作原理。
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