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近年来，随着京九铁路以及既有线提速工程的实施，铁路信号技术装备有了新的发展，涌现出诸如18信息移频自动闭塞、微机联锁、12号提速道岔、三相电动转撤机等一系列先进信号设备。各种新型信号技术设备的大量使用，对车站信号设备供电用的信号电源屏也提出了新的要求，本文就
In recent years, with the implementation of Beijing-Kowloon Railway and existing line speeding projects, railway signaling technology and equipment have undergone a new development, emerged such as 18 information automatic frequency blocking blocking, computer interlocking, 12 speed turnout, three-phase electric withdrawal Machine and a series of advanced signal equipment. The extensive use of various new signal technology equipment, the station signal equipment for power supply signal power screen also put forward new requirements, this article