Joseph Inyang, Juststandout Academy, January 2011.
Technically, a UPS is an uninterrupted power supply which provides power backup with 3 to 10 milliseconds so you do not notice a power change. This version of UPS is normally considered off-line UPS.
On-line UPS on the other hand, provide power to connected appliances from a battery that is continuously charged. This provides no interruption in power ans has the benefit of providing steady ” clean” power.
Most off-line UPS used AVR (Automatic Voltage Regulator) to stabilize the power.
In today’s market, UPS are normally rated for 5, 15 and 30 minutes power backup.
An inverter on the other hand is a machine that changes DC ( Battery type electricity) to AC ( Utility, generator type electricity)
inverters normally have the ability to support more backup time.The time is determined by the size of the battery bank.
However, most machines in the market today called inverter have one or more of the following;
1. Inverter – Changes DC to Ac
2. Auto Power Switching – More than 500 millisecond. Too slow for sensitive equipment.
3. UPS function – Auto power switching in less than1- milliseconds.
4.AVR – Auto voltage regulation – stabilizes power.
5. AVS – Auto voltage switch – prevents low or high voltage
6. Auto – Auto Generator starts when battery gets low
7. Running side by side wit other power source.