Line-interactive UPS (VI) UPS topologies
“Voltage independent” UPS in compliance with IEC 62040-3, also known as line interactive, protects against the most common power problems experienced in a network. Here tSE UPS also monitors the voltage level and balances under and over voltages. The VI technology offers a good compromise between reasonable security and moderate operating costs.
Advantages:
- Extremely wide input voltage window
- Rugged design
- High efficiency
- Low operating costs
Disadvantages:
- Transfer gap (some ms) AVR control rage/inverter transfer
- load is fed by unfiltered voltage (no correction by the inverter)
- Diagram of a line-interactive UPS
