company news about Features of charging pile fuse

       The charging pile fuse is mainly composed of three parts: melt, shell and support, among which the melt is the key element to control the fusing characteristics. The material, size and shape of the melt determine the fusing characteristics.

        Melt materials are divided into two categories: low melting point and high melting point. Low melting point materials such as lead and lead alloys have a low melting point and are easy to fuse.

        Due to their large resistivity, the cross-sectional size of the melt is large, and more metal vapor is generated during fusing. It is only suitable for fusing with low breaking capacity. device. High melting point materials such as copper and silver have a high melting point and are not easy to fuse, but due to their low resistivity, they can be made into smaller cross-sectional dimensions than low melting point melts, and generate less metal vapor when fused, which is suitable for high breaking points. capable fuse.

        The shape of the melt is divided into two types: filament and ribbon. Changing the shape of the variable section can significantly change the fusing characteristics of the fuse.

        The charging pile fuse has an inverse time delay characteristic, that is, when the overload current is small, the fusing time is long; when the overload current is large, the fusing time is short. Therefore, within a certain overload current range, when the current returns to normal, the fuse will not blow and can continue to be used. Fuses have various fusing characteristic curves, which can be applied to the needs of different types of protection objects.