UPS Technology explained - Line Interactive

Basic protection for the single user and small office environment.

Line Interactive

Line Interactive UPS systems are typically used for protecting networks and IT applications against power failure, power sag, power surge, Undervoltage and over-voltage. 

In normal mode, the device is controlled by a microprocessor that monitors the quality of the supply and reacts to fluctuations. A voltage compensation circuit is enabled to boost or reduce the supply voltage to compensate for the fluctuations. The main advantage of this technology is that it enables compensation of under and over-voltage without using the batteries.

The Line Interactive UPS will protect against:

  1. Power Failure - Typically caused by lightning strike or a fault with your power providers equipment. Without a UPS, this will cause a hard shutdown, putting data at risk.
  2. Power Sag - Short-term voltage reduction, often caused by start-up of nearby large loads. Power sags can cause equipment crashes and hardware damage.
  3. Power Surge - Short-term high voltage, usually caused by lightning strike nearby. Spikes very often lead to data loss and/or hardware damage.
  4. Undervoltage - Reduced supply voltage lasting from minutes to days. Typically occurs when supply network is overloaded. Can lead to computers behaving unpredictably. 
  5. Overvoltage - Increased supply voltage lasting from minutes to days. Often triggered by rapid reductions in power demands, overvoltage can damage hardware.

An example of the Line Interactive UPS system is the PCL Certa CRT300R.

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