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1. Input filter: Perform a filter for input .It provides clean AC power to the UPS.
2. AC/DC Boost：In Normal mode, it converts the AC input power to regulated DC power.
3. DC/DC converter: Raises the DC Voltage from the battery system to the optimum operating
voltage for the inverter when the UPS operates in Battery mode.
4. DC/AC inverter: In Normal mode, it utilizes the DC output of the AC/DC inverter and inverts it
into precise, regulated sine wave AC power. In Battery mode, it receives energy from the
battery through the DC/DC converter.
5. Bypass: It is very important in the UPS system. In the event of an UPS fault that will not lead to
UPS shutdown, the load will be automatically transferred to the bypass. Meanwhile, the LED or
LCD indicators will indicate the fault type, and the fault information will be reported through the
communication ports.
6. Charger: The charger of standard UPS provides 1A charging current; that of 1kVA long backup
time provide 7A charging current: and that of 2kVA and 3kVA long backup time provided 8A
charging current.
7. Battery: sealed maintenance-free lead –acid battery can be used as the DC source of the UPS.
8. Output filter: Perform a filter for output .It provides clean AC power to the load.
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