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Product Overview: Electrical reliability is of great importance in many important applications. To improve the power reliability under load, typical power supply systems use dual-power supply configurations, such as two mains supplies, or one mains supply combined with one UPS. However, a more reliable method is to use dual UPS power supply; this approach is employed by computer systems in many factories and enterprises, comprehensive commercial IDC facilities, bank branches, as well as many critical loads in the telecommunications, mobile, and power sectors. For dual-power systems, the way in which power is switched between sources safely, quickly, and efficiently has a direct impact on the reliability of power supply. Especially, many devices have very strict requirements regarding downtime; for instance, some require that downtime not exceed 10 ms, with others even demanding 5 ms. Under such conditions, conventional mechanical contacts such as ATS are not suitable for this task. High-speed GSS static switchgear, on the other hand, possesses the capability to detect power loss rapidly, enabling fast, safe, and efficient switching between dual power sources. Drawing on years of experience in power switching applications, Guogao Company has developed the GSS series of static switchgear (also known as STS static transfer switches). This series includes single-phase and three-phase static transfer switches. The GSS static transfer switch boasts advantages such as small size, flexible installation, and long-term reliability. It is primarily designed for dual-power switching in data centers, server rooms, and communication centers. A static transfer switch is a switch with two input circuits; normally one circuit is connected while the other is disconnected, with power supplied to the load from one of the AC inputs. When there is a failure in one of the power supply circuits, the GSS static transfer switch automatically disconnects the circuit that was previously connected and connects the other circuit, thereby transferring the load to the alternative power source without any disruption. The GSS static transfer switch is mainly composed of an intelligent control board, high-speed thyristors, and a circuit breaker. Switching time