Fix Engineering
LI Series 600 VA – 2000 VA – image 1

Line-Interactive UPS

LI Series

Line-interactive topology600 VA – 2000 VA

The LI Series (600–2000 VA) is a line-interactive UPS family that works across a wide input voltage range and is microprocessor-controlled, with all functions running automatically.

In normal mains conditions it passes the mains to the output and charges its batteries; during a power cut the inverter engages instantly and keeps supplying the load from the batteries without interruption. Runtime is fixed (extra batteries cannot be connected), and the internal batteries are fully maintenance-free dry-type cells.

  • Engages instantly when the mains fails
  • Wide input voltage range
  • Microprocessor-controlled operation

Product Features

  • LED control panel
  • Microprocessor digital control
  • Automatic voltage adjustment
  • Wide input voltage range (170~280 V)
  • Automatic fuse
  • Easy-to-understand alarm system
  • Output power factor = 0.6
  • Cold start (start from battery without mains)
  • Simulated sine wave output waveform
  • Intelligent battery control system
  • Short-circuit and overcurrent protection
  • Battery deep-discharge protection
  • Automatic frequency detection
  • Automatic shutdown when running without load on battery
  • Self-test at start-up
  • Automatic battery charging while switched off
  • RS232 / USB communication port (optional)
  • LCD display (optional)
  • Electromagnetic compatibility, EMC – LVD CE certificates
  • 2-year warranty / 10-year spare parts warranty

Frequently Asked Questions

What should I consider when choosing a UPS?

The power of the load to be protected (VA/W), the required backup time, the input and output phase configuration, the installation environment and communication needs are assessed together. If you share your load details, we can help you choose the right model.

Which applications is the LI Series suitable for?

The LI Series (600–2000 VA) is a line-interactive UPS family that works across a wide input voltage range and is microprocessor-controlled, with all functions running automatically.

Is there technical documentation for the LI Series?

Yes. You can reach the product's technical specifications from the catalogue (PDF) on this page. The technical specifications table is also on the page.

How long is the warranty?

2-year warranty / 10-year spare parts warranty.