The UPS topology is determined by the basic design of the UPS. The UPS systems that are available on the market today fall into two types of topologies: Line Interactive and Online. These two basic UPS topologies differ and should be considered when choosing a UPS.

Single Conversion - Line Interactive

In these conventional UPS configurations, the UPS batteries provide backup power from the AC mains to connected devices. When the AC power supply fails, the UPS inverter provides power and ensures continuous power to the connected devices, switching from mains power to battery power. Tescom offers the LEO series with Line Interactive topology.

Double Conversion - Online

These UPS topologies isolate the load twice. Initially, a rectifier converts the AC input to DC and feeds the output inverter. Consequently, the output inverter continuously powers and stabilizes the AC supply before it reaches the UPS output.

This double conversion ensures seamless filtering of critical power from the incoming supply, guaranteeing that the supported equipment receives only clean and reliable electricity. In normal operation, a double conversion UPS continuously powers the load. That is, the incoming AC power is rectified immediately, and the inverter starts drawing power from the battery. The UPS ensures that the load always receives power from the inverter even when the AC input is present. Discover Tescom's Online UPS here.

Learn more about how to choose the UPS topology that best supports your needs and economic view.