Difference between UPS and EPS power supply(section one)

One, the classification and principle of UPS
UPS uninterruptible power supply working principle is to use the chemical energy of the battery as a backup, when there is fault interrupt alternating current (ac), UPS is not continuously provide electricity equipment, generally by the rectifier, inverter, static switch, battery, etc.
The classification of UPS:
According to the principle of work is divided into: an off-line and on-line.
According to the power supply mode is divided into: single input single output, 3 phase ups system three-phase input single output, three-phase input three-phase output.
According to the power is divided into: 10 kva minicomputer, medium-sized machine 10 kva - 100 kva, 100 kva over the mainframe.
According to the output waveform is divided into: square wave, trapezoidal wave, sine wave.
Backup type and working principle of the on-line UPS
1)Backup UPS power supply type (an off-line UPS)
When the mains is normal directly by the mains supply power to the device by the battery inverter power supply when mains disconnecting.
Its features are: simple structure, small volume, low cost, but the narrow range of input voltage, switching time, does not apply to the high quality demand of power supply equipment, are normally used for personal computer.
2) on-line interactive UPS
When the mains is normal, the grid by the rectifier for dc inverter, supplied by the ac inverter directly to the device and charger for battery charging at the same time, keep the battery is full capacity. Inverter remain the state of work, to guarantee the continuous output, there is no switch time. Suitable for high quality demand of electric power equipment. For more information, please pay attention to the next section or visit www.rendapower.com.