The series in-built transformers Tower Online UPS for small load scenarios, and widely used in office, health care equipment and the mall. It has 10kVA, 20kVA, 30kVA, 40kVA can be chosen, It has the same outstanding performance as 10-40kVA Tower Online UPS. the 20kVA and 30kVA product can also be used in industrial site, such as ceramic factories, glass factories and other processing industries. And becasue of the in-built galvanic isolation transformer, it provides more safety for small load scenarios.