Dual power automatic switching switch refers to a type of installation controlled by a microprocessor, used for starting and switching between grid power and grid power or grid power and generator power in the power grid system, which can enable continuous power supply from the power source. The series dual power supply automatically switches to the backup power supply through the dual power switch in case of sudden malfunction or power outage of the commonly used power supply (the backup power supply can also be powered by the generator under small loads), ensuring that the equipment can still operate normally. The most common ones are elevators, firefighting, monitoring, lighting, etc. Simply connect the two sets of power supplies to the incoming side of the two air switches, and connect the load to the outgoing end of the AC contactor.

在装置接线前，应先对配电箱停止外观检查，核对接线正确性，检查各部件绝缘、导通接地等状况；检查终了，用一个三相5安培开关作实验电源开关，并对配电箱施行带电模仿实验，确保装置后能根本到达请求。在衔接两组电源时，应肯定哪一个电源优先，把优先的电源接在没有时间延时的一侧，把备用电源接在延时后动作的一侧；当交流接触器下端没有连线时，应把两组电源的同一相相连，确保任何一组电源送电时都能保证正常供电。

Before wiring the device, the appearance inspection of the distribution box should be carried out to verify the correctness of the wiring, and the insulation, grounding, and other conditions of each component should be checked; After the inspection is completed, use a three-phase 5-ampere switch as the experimental power switch and conduct live simulation experiments on the distribution box to ensure that the device can fundamentally meet the requirements. When connecting two sets of power sources, it is important to determine which power source has priority. Connect the priority power source to the side without time delay, and connect the backup power source to the side that operates after the delay; When there is no connection at the lower end of the AC contactor, the same phase of the two sets of power supplies should be connected to ensure normal power supply when either set of power supplies is powered on.

衔接终了，应对电源切换状况停止实验：分别对其中一组电源停止送电，同时转动开关到主电源、后备电源、自动等位置，检查两个接触器的切换状况，以及各相同步合闸状况、触点衔接状况等。若要检查负荷状况，还必需送上额定负荷停止检查。对带电设备的检查，必需准守平安操作规程，确保施行过程平安。

After the connection is completed, the experiment should be stopped in response to the power switching situation: one group of power supplies should be stopped from power supply, and the switch should be turned to the main power supply, backup power supply, automatic and other positions to check the switching status of the two contactors, as well as the synchronous closing status of each phase, contact connection status, etc. To check the load condition, it is also necessary to send the rated load to stop the inspection. For the inspection of live equipment, it is necessary to strictly follow safe operating procedures to ensure the safety of the implementation process.

需求两套东西，一个是发电机的自启动控制器，其次是双电源切换柜，首先从你的市电柜引一根220V的信号线到发电机的自启动控制柜内，一旦这跟信号线断电，发电机本人启动，20秒内能够把点保送到双电源切换柜，这跟时分双电源切换柜换自动切换到发电机这一侧，发电机自动发电完成，打市电来了之后，首先有动作的是双电源切换柜，它会疾速切换到市电这一侧，由于双电源开关有市电优先准绳，发电机此时与负载断开，而发电机也会承受信号线的信号，通知发电机电来了，普通发电时机设置成在承受来电信号后40秒左右自动停机，这是为了避免假来电现象，防止发电机反复启动。

Two sets of equipment are required, one is the self starting controller of the generator, and the other is the dual power switch cabinet. Firstly, introduce a 220V signal line from your mains cabinet to the self starting control cabinet of the generator. Once this signal line is cut off, the generator will start itself and be able to deliver the point to the dual power switch cabinet within 20 seconds. This will automatically switch to the generator side when the dual power switch cabinet is switched, and the generator will automatically generate electricity, After the mains power comes, the first action is the dual power switch cabinet, which quickly switches to the side of the mains power. Due to the dual power switch having the mains power priority criterion, the generator is disconnected from the load at this time, and the generator also receives the signal from the signal line to notify the generator that it is coming. The normal power generation timing is set to automatically stop around 40 seconds after receiving the incoming signal, in order to avoid false power calls and prevent the generator from repeatedly starting.