ABB DPT-CB011双电源自动转换开关；DPT250-CB011 R100 3P
ABB双电源自动切换装置是一种由微处理器控制，用于电网系统中市电与市电或市电与发电机电源自动切换的装置，可使电源连续供电。用户一般允许有数秒或数十秒的电源中断，而这段时间的长短，则取决于柴油发电机组的起动时间和断路器的切换时间。
The ABB dual power automatic switching device is a microprocessor controlled device for automatic switching between the power supply and the power supply of the generator or the generator in the power grid system, so that the power supply can be continuously supplied. Users usually allow power interrupts in seconds or tens of seconds, and the duration depends on the starting time of diesel generators and the switching time of circuit breakers.
（2）ABB可提供三种形式的双电源自动切换装置：
(2) ABB can provide three forms of dual power automatic switching device:
1、DPT/SE:用于两路市电或市电与柴油发电机供电的自动切换
1, DPT/SE: is used for automatic switching between two city electricity or city electricity and diesel generators
2、DPT/TE:用于带母联断路器的两路市电自动切换
2, DPT/TE: for automatic switching of two cities with bus circuit breaker
3、DPT:用于末端控制的双电源切换
3 and DPT: dual power switching for terminal control
（3） DTP包括PC级，CB级,CC级；
(3) DTP includes PC, CB, CC;
OTM（准确来说是DPT-OTM）是DPT的一种，是属于PC级的，PC级是指自动转换开关控制。
OTM (exactly DPT-OTM) is a kind of DPT, which belongs to the PC level, and the PC level refers to the automatic switch control.