STS Static Transfer Switch (Static Transfer Switch) is a two-source automatic transfer system. Under normal operating conditions, when the primary power source (MASTER-UPS1) is within the normal voltage range, the load is always connected to the primary power source. When the primary power source fails, the load automatically transfers to the backup power source (SLAVE-UPS2). After the primary power source returns to normal, the load automatically transfers back to the primary power source.
The STS Static Transfer Switch adopts a break-before-make switching method, enabling uninterrupted transfer between different input power sources and providing dual-bus power supply for single-power loads, such as:
n+1 redundancy for non-parallel UPS systems
n+1 redundancy for UPS systems of different capacities
n+1 redundancy for UPS systems of different models
