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.

在裝置接線前，應先對配電箱停止外觀檢查，核對接線正確性，檢查各部件絕緣、導通接地等狀況；檢查終了，用一個三相5安培開關作實驗電源開關，並對配電箱施行帶電模仿實驗，確保裝置後能根本到達請求。在銜接兩組電源時，應肯定哪一個電源優先，把優先的電源接在沒有時間延時的一側，把備用電源接在延時後動作的一側；當交流接觸器下端沒有連線時，應把兩組電源的同一相相連，確保任何一組電源送電時都能保證正常供電。

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.

銜接終了，應對電源切換狀況停止實驗：分別對其中一組電源停止送電，同時轉動開關到主電源、後備電源、自動等位置，檢查兩個接觸器的切換狀況，以及各相同步合閘狀況、觸點銜接狀況等。若要檢查負荷狀況，還必需送上額定負荷停止檢查。對帶電設備的檢查，必需準守平安操作規程，確保施行過程平安。

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.

需求兩套東西，一個是發電機的自啟動控製器，其次是雙電源切換櫃，首先從你的市電櫃引一根220V的信號線到發電機的自啟動控製櫃內，一旦這跟信號線斷電，發電機本人啟動，20秒內能夠把點保送到雙電源切換櫃，這跟時分雙電源切換櫃換自動切換到發電機這一側，發電機自動發電完成，打市電來了之後，首先有動作的是雙電源切換櫃，它會疾速切換到市電這一側，由於雙電源開關有市電優先準繩，發電機此時與負載斷開，而發電機也會承受信號線的信號，通知發電機電來了，普通發電時機設置成在承受來電信號後40秒左右自動停機，這是為了避免假來電現象，防止發電機反複啟動。

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.