The work of modern enterprises, as well as the life of ordinary citizens, cannot do without electricity. At the same time, it should be understood that electric current, despite all its indispensability, is a very real danger. That is why the question of protection against its effects arose almost simultaneously with the first electrical appliances. Fuses are one of the main links of this protection.
A fuse is a special device whose main function is to turn off the electrical network. This shutdown occurs due to the fact that due to the influence of a current whose parameters exceed the maximum allowable, individual parts of the fuse blow out and the circuit breaks. Fuses are designed in such a way that the circuit is broken due to the fact that the fuse is melted, which fails due tofor extremely high current strength.
Fuses have become a real salvation for electrical circuits, where current and voltage indicators could instantly increase several times. These devices were distinguished by their simplicity, low cost, compact size and high breaking capacity. At the same time, high-voltage fuses are made for those cases when the voltage in the network reaches more than 35 kilovolts, and for lower parameters, low-voltage fuses are produced.
The fact that fuses have become an almost indispensable element of everyday life over the past century has led to a noticeable variety of their modifications. At the same time, it should be noted that the main elements included in the set of these devices practically do not change. The same high-voltage fuses consist of a body, a connecting device, a fusible link and an arcing medium.
burn out, thereby creating a break in the electrical circuit. It should be remembered that the higher the temperature, the fuses should work more quickly.
Usually, an insert is a speciala plate with cutouts, which are necessary in order to reduce its cross-sectional area in certain areas. It is here that fuses release the greatest amount of heat, therefore, in the event of a short circuit, heating here occurs as quickly as possible. In this case, the heat simply does not have time to reach the expanded sections, so the inserts begin to melt, which, as a result, leads to their melting. The main result of all these processes is that the insert loses its ability to conduct electricity and the circuit breaks.
Thus, fuses play a huge role in modern electrical circuits. The safety of the entire site and, consequently, the lives of ordinary citizens depend on their normal functioning.
