What is the difference between UPS and on-line?
Online do not need to change the time, and the battery, even if the electricity is off all right, and the backup need to convert events, about 4 to 10 milliseconds, backup is not suitable for workstations, but the general user can use.
Epon's on-line UPS power supply is always power supply, power supply is zero after the power supply; and the backup is stopped by 0.04 seconds after the conversion time and then power supply.
Online does not need to convert time, and the same battery, even if the electricity is off all right.
Back-up, online interactive are about to be eliminated.
For the on-line UPS power supply, under normal circumstances, with or without electricity, it is by the UPS power inverter load the power supply, so to avoid all by the utility power grid voltage fluctuations and interference brought about influences. Because the on-line UPS power supply can achieve the load of the frequency, power supply, and in the electricity from the mains switch to the battery power supply, the conversion time is zero. Truly to provide users with high-quality voltage regulator, stable frequency of pure sine wave power supply, in order to meet the needs of the network system to provide power protection.
Backup power: the normal power supply in the mains, the mains through the AC bypass channel and then directly through the transfer switch to the power supply, not through the UPS power supply. The inverter in the machine is in the working state, when the UPS power supply is essentially equivalent to a general performance of the mains regulator. In addition to the amplitude of the utility voltage amplitude has improved, the voltage instability, waveform distortion and interference from the grid intrusion and other adverse effects are basically no improvement. Only when the mains power supply is interrupted or below 170V, the battery is only the UPS inverter power supply, and to provide the load regulator, stable square wave AC power. It can be seen from the power supply principle and the steady frequency on-line UPS power supply quality is better than the backup UPS power supply. Because it can be achieved in addition to the load frequency, power supply, and in the electricity from the mains power to the battery power supply, the conversion time is zero.
