UPS systems

UPS systems not only protect against power failures but also against other mains interruptions such as voltage interruptions and frequency fluctuations. In this way, connected systems receive a high-grade current, which clearly increases the service life of the power supply packs.

UPS systems are divided into three classes:

VFD (offline UPS) - Voltage + Frequency Dependent

VI (line interactive UPS) - Voltage Independent

VFI (online UPS) - Voltage + Frequency Independent

Because VFD systems cost only slightly less than VI systems, these units are not really deployed in professional operation.

VI systems (line interactive)

Protection against:

Network failure
Power drops
Voltage peaks
Voltage surges

Inexpensive UPS systems for protection against most network failures

VFI systems (online)

Added protection against:

Voltage failure
voltage distortion
voltage oscillation
frequency fluctuation

VFI (online) UPS systems deliver extensive protection against power failure except in the event of lightning.