ABB DPT-CB011双电源自动转换开关；DPT63-CB011 C10 2P
从大略的方面来说，备用、不间断电源与双电源切换是差不多的。
In a big way, standby, uninterrupted power supply and dual power switching are similar.
从精准的表达来说，备用、不间断电源与双电源切换是有区别的。
From a precise expression, there is a difference between a standby, an uninterrupted power supply and a double power switch.
双电源切换实际上就是互为备用，但双电源切换的两个电源都具有长时间供电的能力。
The dual power switching is actually a standby, but the two power supply with dual power supply all has the ability to supply a long time.
备用电源一般不具备长时间供电的能力，如成本高、容量小，质量差等。
The standby power generally does not have the ability to supply power for a long time, such as high cost, small capacity, poor quality and so on.
备用、双电源切换搞成自动切换也是不间断电源，但人们说的不间断电源主要是指ups，连瞬间闪烁都没有。
Standby, double power switch to automatic switching is also an uninterrupted power supply, but people say the uninterrupted power mainly refers to UPS, even a flash flicker.
