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Tescom Hellas S.A.
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Do I need a Line Interactive or Online UPS?

Line Interactive or Online UPS? How they differ in waveform, transfer time and cost, and which devices each one protects best.

Line Interactive UPS systems are more affordable and produce a simulated sine wave, while powering your load from the grid. In the event of a power outage, the UPS needs a few milliseconds before it starts powering the device from the battery (transfer time). That is why Line Interactive UPS systems are recommended for protecting devices such as computers, TVs, security systems and cameras, game consoles, etc.

Online UPS systems offer higher performance and produce a pure sine wave, powering the connected load directly through the rectifier and inverter, which results in zero transfer time from the main grid. They provide continuous voltage stabilization, ensure consistent quality of the power supplied to the load and protect even the most sensitive devices. Online UPS systems are divided into categories according to the power supply of the network the UPS will support. Learn more here.

The new trend of Lithium UPS and why you should consider it

Besides traditional lead-acid (VRLA) batteries, modern UPS solutions also offer the option of lithium batteries, which bring significant advantages for both Line Interactive and Online UPS systems. Lithium batteries have a longer service life, higher energy density and faster charging times, providing longer runtime and better performance. In addition, thanks to their better tolerance of frequent discharges and their improved efficiency (η), they can reduce the total cost of ownership (TCO). Especially for Online UPS systems, lithium batteries can eliminate micro-interruptions and maintain a pure sine wave supply for critical systems such as servers, medical devices and industrial equipment.