Analysis and Research on Fault of UPS Leading to Supply Interruption

UPS(Uninterrupted Power System)is responsible for the continuous power supply of computer system.It plays a very important role to guarantee the operation safty of the whole system in continuous power supply system,such as continuous process control system in petro chemical enterprise,bank system,airport auto control system etc.Once accident occurs with UPS,power interruption will makes the whole system paralysed.Unfortunately such kind of accident happened in the refinery of ISNOPEC Jinling Company,and resulted the main processing unit shutdown as long as 20 minutes,and the refinery had beared a heavy economic losses.