What is the function of a high voltage fuse? What are the common fuses?

The role of high-voltage fuses: High-voltage fuses are mainly used in power systems to protect electrical equipment and lines from overload, short circuit and other faults. Its main functions are as follows:

1. Protect electrical equipment: When electrical equipment fails, such as short circuit or overload, the high-voltage fuse cuts off the current by fusing the metal wire or other materials inside, thereby preventing damage to the equipment or causing a fire.

2. Prevent electrical fires: For example, high-voltage fuses can quickly cut off the current to avoid overheating of wires caused by excessive current, thereby reducing the risk of electrical fires.

3. Ensure system safety: High-voltage fuses not only protect equipment from current shocks, but also help the power system quickly return to normal operation in the event of a failure.

4. Automatic recovery function: For example, in some applications, when the fuse is blown, the system can be restored by manual or automatic replacement of the fuse.

Common types of fuses:

1. Glass tube fuse: It is commonly found in low-voltage electrical appliances in life, and has a transparent shell, which can be easily checked whether it is blown or not.

2. Ceramic fuse: can be suitable for high power applications, the housing is made of ceramic material, which is able to withstand higher temperatures.

3. Fast-acting fuses: They can quickly blow at the moment when the current exceeds the rated value, and are suitable for protecting sensitive electronic components.

4. Slow-acting fuse: suitable for electric motors or other equipment with starting current impulse, it can withstand high current peaks for a short time, but will blow in the case of continuous overload.

5. Resettable fuse: also known as overcurrent protector, it can be automatically recovered after being blown off, and is commonly found in some low-power appliances, such as mobile phone chargers

6. High voltage fuse: specially designed for high voltage occasions, such as power systems, transformers, etc.

For this reason, different types of fuses need to be selected due to the different needs of their applications, and factors such as current and response speed need to be considered when selecting.