ATS也称ATSE，是ATS产品的国标标准定义为由一个（或几个）转换开关电器和其它必需的电器组成，用于检测电源电路，并将一个或多个负载电路从一个电源自动转换到另一个电源的电器. ATS与UPS、EPS在名称上比较容易混淆。EPS是Emergency Power Supply的英文缩写，中文名为应急电源装置。UPS是Uninterruptible　Power Supply的英文缩写，中文名为不间断电源。ATS(ATS)是Automatic Transfer Switching Equipment的英文缩写，中文名为自动转换开关电器。 ATS适合应用于建筑领域消防等关键负荷的双电源供应，EPS适合应用于EPS是以解决应急照明、事故照明、消防设施等一级负荷供电设备为主要目标，提供一种符合消防规范的具有独立回路的应急供电系统。UPS主要是为IT行业设备提供用电，提供纯净、不间断的后备电源。柴油发电机供电方式适合应用于在需要长时间后备电源的供电场所与ATS、EPS、UPS配合使用。

General principle           edit           Double power supply automatic conversion           It adopts the double row composite contact, cross type mechanism, micro motor and pre storage           Microelectronics control technology, the basic realization of zero arc (no arc cover)           It uses reliable mechanical interlock and electrical interlock Technology           It uses zero bit technology           It has obvious on-off b indicator, padlock function, reliable power and isolation between the high reliability of the load, the service life of more than 8000 times           The design of integrated electromechanical switch, accurate, flexible and reliable electromagnetic compatibility is good, strong anti-interference ability, without external interference, high automation           The automatic type does not need any external control components of beautiful appearance, small volume and light weight by the logic control board, with different logic to manage the motor is mounted directly on the switch, the dynamic operation of the gearbox to ensure the b of the switch.           The motor is provided with a safety device for a polychloroprene rubber insulation damp heat type motor, and the utility model can trip when the temperature is over 110 DEG C and the overcurrent condition.           The utility model is automatically put into operation after the fault disappears, and the reversible reduction gear adopts a straight tooth gear.           WK operating procedures           edit           1, when the power outage, and in a short period of time can not restore power supply, must enable the standby power supply.           Step:           The removal of electric power supply of each circuit breaker (including the circuit breaker control cabinet, power distribution room dual power switch box power supply breaker), open the double throw switch to the prevention of back power supply side, keep the double power supply switching power supply box self breaker is in off state.           Start the standby power supply (diesel generator set), when the standby group is running normally, turn off the generator air switch and the circuit breaker in the control cabinet.           The power supply circuit breaker of each power supply is switched off by the power supply switch box.           During the operation of standby power supply, the operator on duty shall not leave the generator set, and adjust the voltage and the frequency of the plant in time according to the change of the load.           2, the city to restore power supply, should do a good job in a timely manner to power conversion, cut off the standby power supply, restore power supply.           Step:           The sequentially disconnect power supply of each circuit breaker, the order is: dual power supply switching power supply circuit breaker box, power distribution cabinet, each circuit breaker switch, the generator double throw switch to electric power supply side.           According to the diesel engine shutdown step down.           According to the order, the main switch of the power supply of the city is connected to each branch switch to close the circuit breakers one by one.           3, check the instrument and indicator light is normal, start the transber cooling fan.