Enterprise shouldered transferring power supply that was a historical leaving over a problem, and it was enterprise handling social expression, it also was enterprise a burden.
工矿企业承担转供电是带有普遍性的历史遗留问题，是企业办社会职能的表现，也是企业的一大社会负担。
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。
The operating principle, structure features and main specifications of SQ30Z series intelligent automatic transferring switch of power supply were introduced.
介绍了最新开发的SQ3 0 Z系列智能型自动转换开关的工作原理、结构、性能特点和主要技术参数。
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