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Product Overview: The disaster prevention and safety systems for high-speed railways (disaster prevention power supply units for high-speed railways, dual-power supply units for high-speed railways) are among the infrastructure elements that ensure the safe operation of high-speed railways. They provide data and support for train operation management. These systems include monitoring devices for factors such as wind direction, rainfall, snow depth, earthquakes, and the intrusion of foreign objects into the track. The reliability of the system’s power supply is fundamental to its stability, and automatic switching between dual power sources is a widely accepted solution for ensuring a stable power supply in such systems. Nanjing Guogao Electric has been dedicated to switchgear development for over a decade. The FZJF-1 dual-power distribution box for passenger-dedicated line disaster prevention equipment (featuring automatic transfer and restoration, automatic transfer without restoration, mutual transfer, and manual operation capabilities) is designed specifically to meet the power distribution requirements for such applications. Built upon nearly a thousand railway disaster prevention control devices and incorporating circuit breakers from internationally renowned brands, this newly developed distribution system can be installed either on walls or flush-mounted (concealed). It boasts high reliability, intelligence, ease of operation, and a compact size. The FZJF-1 dual-power distribution box for disaster prevention equipment in high-speed railways is suitable for low-voltage distribution disaster prevention systems where there is no auxiliary power supply system (UPS\DC panel) on site. It is used at the front end of the UPS system for disaster prevention equipment, and features modes such as automatic switching with self-restart, automatic switching without self-restart, mutual switching, and manual adjustment. It enables rapid and reliable switching between qualified power sources, ensuring stable power supply. The dual-power distribution box for disaster prevention equipment on FZJF-1 high-speed railways is mainly composed of a DCM631MS controller (a dedicated self-switching and self-restarting module for disaster prevention on high-speed railways), circuit breakers of imported brands, built-in fuse-type surge protectors, and system backup power supplies. This product has passed the following certifications: **Railway Product Quality Supervision and Inspection Center/China Railway Inspection and Certification Center Co., Ltd. Test report number: (2019) GTJ(JCW)W5963. Design principles of railway-specific disaster prevention power distribution boxes, technical solutions for high-speed rail disaster prevention power boxes, and main features of products manufactured by manufacturers of passenger rail disaster prevention distribution boxes. ☆ Multiple operating modes, with the ability to program on-site. ☆ The controller operates over a wide voltage range, offering high redundancy. ☆ Dual displays: one for graphics and one for LCD ☆ Manual test mode for easy debugging and maintenance ☆ Compatible with most dedicated safety monitoring systems used by customers ☆ Independent power consumption statistics for both power sources. Main functions of the product: Automatic switching and restoration process: ☆ Under normal power supply conditions, Power Source 1 supplies power to the disaster prevention equipment connected to UPS-I, while Power Source 2 supplies power to the load connected to UPS-II. The main circuit breaker remains open, and the system enters a hot standby state after charging is completed. ☆ Upon a power failure, the control module trips the circuit breaker of the power supply circuit. After confirming that it has tripped, it closes the interconnection circuit breaker, thereby completing the automatic transfer operation. Once power is restored to Power Source 1, the control module trips the interconnection circuit breaker. After confirming that the interconnection breaker has tripped, it closes the incoming circuit breaker for Power Source 1. It is confirmed that the auto-reset operation is completed after the circuit breaker for Power Source 1 is closed. ☆ When Power Source 2 loses power, the control module opens the circuit breaker associated with Power Source 2. Once this has been confirmed, the tie-breaker is closed, completing the automatic switching process. Once power supply 2 resumes supplying power, the control module opens the tie circuit breaker. After confirming that the tie breaker is open, it closes the incoming circuit breaker for power supply 2; once that breaker is closed, the self-recovery process is completed. Self-powering without automatic recovery operation process: ☆ Under normal power supply conditions, Power Supply 1 supplies power to the disaster prevention device UPS-I, while Power Supply 2 supplies power to UPS-II; with the busbar circuit breaker in the open position, the system enters a hot standby state after charging is completed. ☆ Upon a power failure, the control module trips the circuit breaker of the power supply circuit. After confirming that it has tripped, it closes the interconnection circuit breaker, thereby completing the automatic transfer operation. Once power is restored, the control module takes no further action. ☆ When Power Source 2 loses power, the control module opens the circuit breaker associated with Power Source 2. Once this has been confirmed, the tie-breaker is closed, completing the automatic switching process. Once power supply two resumes supplying power, the control module takes no further action. Operation process of mutual switching between the two power supplies: ☆ Under normal power supply conditions, Power Supply 1 supplies power to the disaster prevention device UPS-I, while Power Supply 2 supplies power to UPS-II; the busbar circuit breaker is in the open position, and the system enters a hot standby state after charging is complete. ☆ Upon a power failure, the control module trips the circuit breaker of the power supply circuit. After confirming that it has tripped, it closes the interconnection circuit breaker, thereby completing the automatic transfer operation. Once power is restored to Power Source 1, the control module does not perform a self-restart action. However, when Power Source 2 loses power, the controller trips the circuit breaker of the Power Source 2 circuit and closes the circuit breaker of Power Source 1, thereby completing the transfer operation. ☆ When Power Source 2 loses power, the control module opens the circuit breaker associated with Power Source 2. Once this has been confirmed, the tie-breaker is closed, completing the automatic switching process. When power supply two resumes supply, the control module does not perform self-restart; however, when power supply one loses power, the controller opens the circuit breaker for power supply one and closes the circuit breaker for power supply two, thereby completing the mutual switching operation. Operation process in manual mode (debugging and maintenance): ☆ When the panel switch is set to manual mode, the system enters manual debugging mode. ☆ The circuit breaker can be opened and closed directly via the open/close buttons on the panel, and the open/closed status can be observed directly through the indicator lights.