The basic working principle of generators is to convert mechanical energy into electrical energy. Various engine systems such as combustion engine, steam engine can provide this transformation. Generators can be used as a backup energy source with this working principle.
In the event of a mains power failure, the generators are activated by automatic transfer switch to supply energy to any electrical device. Moreover, the generators, which can detect the interruption in just seconds, can be activated in just seconds. This means that energy can be used without interruption.