Description Of Different Types Of Drop-out Fuses

"Load-breaking type"—NCXFdrop out fuse 33kv. This type of drop out fuse cut out fuse has the ability to interrupt normal operating current. It has an internal arc-extinguishing chamber and a spring-driven arc-extinguishing blade, which automatically extinguishes the arc after the fuse tube is pulled out, thus completing the load-breaking operation. It is suitable for scenarios requiring manual or remote disconnection and restoration of the line.

In outdoor overhead line protection, there is the XS type outdoor high-voltage AC drop out fuse element specifically designed for high-voltage distribution. The applicable voltage range is approximately 4.16kV to 25kV, and it can also be used in 26.4kV to 34.5kV systems. This model provides an integrated fuse and base assembly, suitable for overhead lines, transformers, and capacitor banks. It adopts a single-ended bottom venting structure for safe venting when the fuse breaks, making it suitable for outdoor environments.

In addition, there is also the standard drop out fuse in transformer available on the market for 10kV, 35kV, and other distribution systems. They are typically classified according to rated voltage, current, and breaking capacity. For example, some models have a rated voltage of 10kV, a rated current of 100A or 200A, and a breaking current of several thousand amperes. This classification method facilitates flexible selection for transformer primary sides, branch lines, or overhead lines.