Electrical UPS System operation and principle??

UPS = Uninterruptible Power Supply
分 Online UPS / OFF Line UPS
先講Online UPS
Utility Power ON ---> Regulated /Rectifier /Charger ---> Battery And Inverter
--> Transfer Switch ---> Loading
如果"Utility Power" OFF
Battery ---> Inverter ----> Transfer Switch---> Loading
(供電冇間斷)

OFF Line UPS
Loading 接駁到 Transfer Switch的Utility Power ,如果停電再轉回電池供電.
(供電有間斷)