铁路信号设备的雷电综合防护体系

随着铁路信号设备向数字化、网络化、智能化和综合化方向发展,大规模集成电路和低耐压器件在信号设备中大量使用,雷电所带来的危害越来越大,对雷电的防护已成为保证铁路安全运输的重要问题。综合雷电防护方法是在全面考虑雷电损坏信号设备的各种可能途径的基础上,综合采用外部防护、屏蔽、等电位连接、接地、合理布线、使用浪涌保护器等多种方法解决这个问题的有效措施。

With the development of railway signal equipment towards digitization, networking, intelligence, integration, large amount of large scale integrated circuit and low voltage components with high resistance ability are used in signaling equipment. Thus, the damages in signal equipments from lightning turned out to be more serious and lightning-proof has become an important problem to guarantee railway transportation safety. The method of integrated lightning protection is an effective way to solve this problem by using exterior protection, shielding, bonding, grounding, proper routing and SPD to avoid possible damages of signal equipment from lightning.