Protecting critical power with 0ms transfer time and 96.5% efficiency
Key engineering performance metrics for Riello
0 ms
Instantaneous load transfer time
96.5%
Operating efficiency in double-conversion mode
< 3%
Total harmonic distortion of current
1.0 PF
True output power factor
Environment 1 · Data centers and computing
Protecting servers and networks from any fluctuations or harmonic distortion
Data centers require superior electrical purity (THDi < 3%) and full compatibility with cooling systems and generators to ensure cloud operations never stop, even for a fraction of a second.
Environment 2 · Laboratories and medical research
Complete electrical isolation for analytical and precision microscopic equipment
Genetic testing, MRI machines, and electron microscopes cannot tolerate frequency flickers. The VFI-SS-111 architecture provides a pure sinusoidal voltage completely isolated from public grid distortions.
Environment 3 · Administrative headquarters and workspaces
Continuous readiness for workstations and corporate communication systems
Integrated protection for payment gateways, local servers, and communication systems without sacrificing quietness or energy efficiency in modern office environments.
1
Communication and conferencing systems
Uninterrupted operation for meeting rooms, display screens, and unified communication systems.
2
Servers and local payment gateways
Protecting network storage units, payment gateways, and office servers from data corruption.
3
Compact and ultra-quiet design
Silent operation and high thermal efficiency suitable for enclosed office environments without noise.
The engineering difference between Online Double Conversion and traditional systems
Riello Online Double Conversion systems
VFI-SS-111 classification (100% continuous protection)
0ms transfer time with zero flicker or interruption
Complete voltage and frequency isolation from the supply grid
Operating efficiency up to 96.5% with a 1.0 power factor
Very low harmonic distortion THDi < 3%
Traditional Line-Interactive UPS systems
Line-Interactive or Standby classification
Transfer time ranging from 4ms to 12ms
Direct load supply from the grid with partial regulation
Fluctuating efficiency with direct susceptibility to grid frequency distortions
Power factor below 0.8 - 0.9 with potential for voltage flickers
Continuous power without interruption or distortion, designed to protect the most sensitive assets in your facility.
Riello series units to cover all power ranges
From compact tower units for office and laboratory protection (Sentryum & Vision), to three-phase modular systems (Multi Sentry & Master HP) for large complexes and data centers.
TECHNICAL DATA SHEET
Technical matrix and standard specifications for the Riello UPS system
System topology
VFI-SS-111 (Online Double Conversion according to IEC EN 62040-3 standard)
Switching and transfer time
0 ms (Zero Transfer Time)
Maximum operating efficiency
96.5% in double conversion mode, and up to 99% in Smart Active mode
Input current harmonic distortion
Less than 3% (THDi < 3% @ 100% Load)
Output power factor
1.0 PF (The unit produces kW equal to kVA without power derating)
Overload capacity
110% for 60 minutes / 125% for 10 minutes / 150% for 1 minute
International certifications and standards
IEC/EN 62040-1, IEC/EN 62040-2 (EMC Class A), CE, ISO 9001, ISO 14001
Smart battery management
High-performance batteries with automatic self-testing and deep discharge protection