Dual power automatic transfer switch (ATSE) the development trend of the development trend of ATSE mainly include two aspects, one is the switch body, with high surge current capability, and can frequently transfer; with reliable mechanical interlock to ensure that any Two state power can not be run in parallel; not allowed to jump off with a fuse or device to prevent dual power switch due to overload caused by the output of non-electrical phenomena; with 0 features dual power supply circuit, and the isolation distance, in order to be able to withstand the impact of higher voltage (8KV) above; after four switches with N-stage before-minute feature to prevent ATSE when switching, different systems N line potential shift so that the current trend is inconsistent or shunt, resulting in residual current protection equipment malfunction. The second is the controller, using microprocessor intelligent products, detection module should have a high detection accuracy and a wide range of parameter settings, including voltage, frequency, delay time; with good electromagnetic compatibility dual power circuit size, should be able to withstand voltage fluctuations in the main circuit, surge protection, harmonic interference and electromagnetic interference; conversion time soon, and the time delay is adjustable; can provide users with a variety of signals and fire linkage interface, communication interface. As can be seen from the ATSE development process and development trends, PC-ATSE application in engineering will become mainstream. It is worth mentioning is that the "fixed fire pump drive - Controller" (IEC standard draft amendments) pointed out, ATSE should not short-circuit and over-current protection. The CB-ATSE not able to meet that, once the short-circuit and over-current occurs, release the trip, although the supply side caused by an electric dual power wiring diagram, but no electricity load situation, can not meet the primary and secondary load the power supply requirements. IEC standard revision trend also proved PC-ATSE promotion project is inevitable. That is why we were alone on the PC level ATSE reasons set forth herein. Select ATS dual power switch products based on the current situation dual power engineering, as well as market research, we found that the current domestic market, there are more automatic switch, there are products such as the United States ASCO products abroad, the domestic manufacturers are also using ordinary two molded case switch plus mechanical interlock mechanism and control devices, such as the production of switch. Detailed inspection standards, in fact, a standard automatic transfer switches have described different occasions and different conditions of use requirements, according to the requirements of national standard GB / T14048.11-2002's, ATS dual power switch in order to ensure safety and reliable operation of the subway station, and an important place for important equipment supply, we supply the importance of ATS dual power switch, with high reliability requirements, usually dual power supply mode to ensure the reliability of power to the load. Here we are bound to have a selection and product quality dual power supply equipment demanding, in terms of the circuit inside the electrical power distribution, dual power conversion products is the most important in the whole circuit. Visible in the distribution loop, dual power switch ATS is a crucial component, ATS will appear once the deviation loss of power supply equipment for safe and stable operation of the system adversely affected. Dual power converter, double-Electric (certified), dual power by stopping Thai Industries Limited Shanghai Branch Yueqing offer. Shanghai only Thai Industrial Co., Ltd. Yueqing Branch (www.cnats.cc) is Wenzhou, Zhejiang Province, switch leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the only Thai Industries led the staff warmly welcome all inquiries negotiations to create only a better future for Thai Industries.