Main Differences between Power Protection Technologies of UPS Systems

These are three varied forms of UPS topologies. These are Off-line UPS, Line-Interactive UPS and Online UPS. First type is the UPS with offline topology. The inverter is attached in parallel and works only to support utility power. There are four components in such a system. The first one is the battery that feeds power to the inverter and the second component naturally being the inverter. The inverter draws the DC voltage and converts it into the AC voltage needed for powering your device. The third element is the input surge protection for protecting the load from the damage caused as a result of the spikes and high-voltage surges. The last element of the Standby UPS system is the battery charges.

The mini CFL UPS or a standard UPS incorporated with the line-interactive topology has inverter attached in parallel and works to support utility power. It also executes the function of charging the battery. It interconnects with the utility power by means of its reversible operation in order to act upon to stabilize the voltage. It detects the condition of undervoltage or overvoltage, it also has the need of a transfer time for the inverter to switch on and power the load. It is different from the off-line UPS with regard to the fact that in the offline mode, it has active voltage regulation.

Online UPS provides double-conversion topology in which the inverter is attached in series between the load and AC input. The online UPS manufactured by a home UPS manufacturer has batteries, input surge protection, rectifier and inverter components. The function of the rectifier is to take the input voltage and transforms it form AC voltage that comes from the utility power to the DC voltage for supplying DC power to the inverter and for charging the battery.