Introduction
Drum-type electric selector is a kind of equipment used to connect one or several loads to one or several power sources without interruption. In power distribution systems, this device is mainly used to complete the switch of the active line and the standby line, and also to complete the switchover between the generator set and the public power grid, in order to realize normal operation of the power supply system. The structure of drum-type electric selector is very simple, so it is widely used in generator set, microgrid and distributed energy system.
Principle of Operation
Drum-type electric selector is operated manually. The main components of this device include motor, reducer, gear shaft and drum. When the electric switch is in the normal working state, the rotary arm is connected with the drum and the power supply is provided to the electric switch through the resistor. The electric switch can automatically switch the connection between the line and the power supply, thereby providing the power supply to the electric switch. In addition, there is a manual switch handle on the gear shaft of the drum-type electric selector, which can be manually operated to connect or disconnect the line, so that the electric switch can complete the switchover between the two branches of the power supply line without power failure.
Advantages
The advantages of the drum type electric selector include high reliability, low failure rate, and energy efficiency. The drum type electric selector is composed of motor, reducer, gear shaft and drum, so the structure of the device is relatively simple and the manufacturing cost is relatively low. In addition, this device does not require any additional relays or sensors, so that it can reduce the number of components and reduce energy consumption. In addition, the drum-type electric selector has a relatively low noise level, making it suitable for use in quiet environments.
Disadvantages
The major drawback of drum-type electric selector is that it is less flexible than other types of electric selectors. This type of electric selector is usually used in fixed power distribution systems, and it cannot be adapted to different environments. In addition, since the operation of the drum-type electric selector is manual, it requires a lot of manual labor, which is not very suitable for applications that require frequent switching of the power supply line.
Conclusion
Drum-type electric selector is a type of equipment used to connect multiple loads to a single power supply without interruption. This device has simple structure, low cost and high reliability, but it also has some drawbacks, such as low flexibility and lack of automation. Therefore, in order to choose the most appropriate electric selector for a particular application, the design engineer should consider both the advantages and disadvantages before taking a final decision.
