Understanding UPS Topologies: Online vs. Line-interactive vs. Standby
When choosing a UPS (Uninterruptible Power Supply) to protect your electronic equipment there are 3 main UPS technologies on the market today. The standby UPS is a low cost option that will protect you from power failure, sags and surges, while an online UPS offers total power protection from all 9 power problems.
- Low price protection from power failure, sags and surges
- UPS will switch to battery if a failure, surge or sag is detected
- Results in frequent battery use, which reduces runtime and service life
Line Interactive UPS
- Regulates voltage by boosting/decreasing utility power before passing it through to your electronics
- Transfer to battery within 3-8 ms
- In addition to failure, sags and surges will also protect against brownouts and noise
- Battery use less than standby but greater than online
- Highest level of protection: ensures delivery of clean and stable power to critical loads by converting and conditioning utility power first to DC and then back to AC
- Protects from all 9 power quality problems
- 0 transfer time
- Isolates equipment from harmonic distortions and is strongly recommended for critical applications
- Uses the battery less often than standby and line-interactive, increasing battery life
If you would like help choosing the right UPS for your application give us a call and talk to a UPS expert.