SVEN Pro+ 850 (LCD, USB)


SVEN Pro+ 850 line-interactive UPS is designed for protection of PCs, workstations, as well as servers equipped with switch power supplies. Due to its battery, the UPS can operate even in case of complete absence of mains power, which gives the user a possibility to save data and shut down the operating system correctly. The built-in automatic voltage regulator allows increasing/reducing the input voltage without switching to battery mode and ensures long uninterruptible work. This feature is vital for networks with unstable voltage.

SVEN Pro+ 850 UPS is supplied with Cold Start function, allowing to switch on the UPS in conditions of complete absence of mains voltage. The built-in USB port gives a possibility to monitor the mains from your PC and shut down the PC in automatic mode correctly. Besides, The UPS is equipped with a multifunction LCD display showing the mains status, load and battery discharge level.


  • Wide range of input voltage auto regulation
  • Digital microprocessor control
  • Indication of basic UPS operation modes
  • Sound alarm at critical discharge level of storage batteries (without switch-off option)
  • Sine approximated output voltage in off-line mode
  • Cold start function
  • Multifunction LCD display
  • Transformer thermal protection
  • Metal case

Technical Specifications

UPS type line-interactive
Built-in AVR available
Total power, VА 850
Active power, W 510
Type of load computer, monitor
Maximum load, W 510
Input voltage level, V ~165 – 275
Output voltage level, V ~220 ± 10 %
Output voltage waveform approximated sinusoid
Input frequency, Hz 50
Output frequency, Hz 50 ± 1 % (backup mode)
Communication port USB, RJ-11
Input socket 1 × CEE 7/7
Output sockets 2 × CEE 7/4
Protection against short circuit, impulse and high frequency interferences; transformer thermal protection
Accumulator type maintenance-free sealed lead-acid batteries (consumables)
Battery voltage, V 12
Battery capacity, А•h 9
Typical switching time, ms ≤ 10
Batteries operation time, min 3-20 (dependent on connected load)
Indicators power LED, on-line operation LED, charge LED
Fuse current limiter of voltage transducer
Case material metal
Dimensions, mm 95 × 160 × 325
Weight, kg 7.3
Color black
Life time 5 years

Tests and reviews

This article says about the theory and practice of using uninterruptible power supplies (UPS).
Anatoly Litvinenko.