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Product Overview: The DPAS series of DC dual-power fast switching devices were developed by Guogao Electric over many years of research on reliable multi-power supply systems. They are designed to meet the power supply requirements of various DC control systems in power plants, electrical facilities, communication systems, etc. Also known as automatic DC dual-power transfer switches, these devices can be classified into DPAS-Z type, DPAS-R type, and DPAS-M type depending on the application scenario. They are primarily used in situations where two DC systems need to be completely isolated, such as in large-scale power plants, key substations, and converter stations, as well as in scenarios with a single DC bus divided into sections. These devices feature zero-latency switching, automatic detection of bus insulation, and other advantages. In recent years, with the advancements in high-speed processors, power electronics technology, and inverter technology, these systems have become highly mature in terms of reliability, speed, and capacity, meeting the design requirements for reliability and isolation in DC power supply applications. These products are widely used in DC power supply systems for secondary electrical equipment. This series of DC dual-power fast switching devices integrates DC bus insulation monitoring technology, high-power inverter technology, analog isolation acquisition technology, and rapid power failure detection technology to ensure fast switching between DC power sources, thereby significantly improving the reliability of DC power supply systems. The DPAS series of DC dual-power fast switching devices can handle the switching between 220V dual DC power supplies, 110V dual DC power supplies, and 48V dual DC power supplies. DC dual power supply, fast switching between dual power supplies, power supply switching, DC dual power supply system – key features of this product: ☆ The DPAS series of fast-switching DC dual power supply devices utilize digital DC/DC isolation tracking technology to ensure a switching time of 0 milliseconds. ☆ Over 100,000 switching cycles of lifespan; it automatically records information such as switching time and conditions before and after switching, with no data loss over 10 years. ☆ Designed with superior overload capacity, it features strong transient overload resistance, high reliability under long-term full-load operation, and low standby power consumption. ☆ Online monitoring of DC bus insulation; in case of abnormalities, it automatically tests the insulation values of the positive and negative buses and issues alarms along with recording the relevant data. ☆ The DC switching device has a flexible operating mode that adapts automatically, capable of operating in single-unit or multi-unit mode as needed. ☆ The DC switching device performs internal system self-checks on its power supply, monitors the inverter circuit in real time, and issues automatic alarms in case of faults. ☆ It fully adopts embedded SOC (System On Chip) design, with its software featuring a modular structure and high resistance to interference. ☆ Fully enclosed aluminum alloy power supply enclosure with excellent EMC properties, in standard 2U and 4U chassis heights, suitable for centralized rack installation. ☆ The DC dual-power supply switch features multiple protection functions such as overvoltage, undervoltage, and overtemperature protection, ensuring the reliability of the DC system in all aspects. Product selection table: https://nwzimg.wezhan.cn/contents/sitefiles2038/10192619/images/14341818.png Note: For currents exceeding 100A, customization is required; for circuits with voltage levels above this, such as 24V and 48V, special customization specifications are needed. For example: DPAS-Z-DC220V/40A indicates that it is used for applications requiring seamless, delay-free switching between primary and backup DC power supplies, with a DC bus voltage of 220V and a bus current of 40A.