The topology of the UPS is characterized by the basic design of the UPS operation. The UPS devices sold on the market today are available in two types of topologies . These two basic topologies operate differently and can affect the protected device or the cost of the UPS if chosen incorrectly.

Single Conversion - Line Interactive

Under normal conditions these UPSs receive power from the mains (AC) and power the connected devices directly. If the power supply (AC) stops being within the allowable limits, the UPS inverter stops the direct power supply and starts powering from the batteries until the power is restored or the batteries are exhausted. Tescom has the well-known LEO series with Line Interactive topology.

Double Conversion - Online

UPS of this topology convert power twice. First, an input rectifier converts the AC power to DC and feeds the output inverter. Then the output inverter processes and stabilizes the AC power before sending it to the UPS output.

This dual conversion process completely isolates critical loads from raw power, ensuring that the supported equipment receives only clean and reliable electricity. In normal operation, a double conversion UPS continuously processes power twice. If, however, the AC input power supply stops being within allowable limits, the input rectifier is shut down and the output converter begins drawing power from the battery. The UPS continues to use battery power until the AC input returns to allowable limits or the batteries are exhausted. Get to know Tescom's Online UPS here.

Learn more about how to choose the UPS topology that will support you properly and economically here.