The difference between kilovolt ampere and kilowatt is that they have different functions and conversion methods. KW refers to kilowatts, which is a unit of power, while KVA refers to kilovolt amperes. It refers to a unit of capacity for electrical equipment such as transformers, motors, etc.

When the power frequency UPS power supply is charged, it converts electrical energy into chemical energy and stores it. When a power grid failure occurs, the stored energy can be converted into electrical energy through an inverter to continue supplying to the load.

The UPS uninterruptible power supply and the DC operating power supply system together form a dedicated uninterruptible power supply for power plants and substations.