HVW-2

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High-voltage high-current fuses are designed for medium voltage (MV) and high voltage (HV) applications, and the HVW-2 range is among the most reliable and widely used. The fuse is designed to shut off the current when it exceeds a specified value, thereby protecting medium voltage equipment and installations against overloading and short-circuiting. In this article, we will explore the various applications of the HVW-2 fuse and its working principle.

Applications

The HVW-2 fuse is best suited for use in medium voltage and high voltage electrical systems, providing protection against short-circuits and overloads. The fuse can be used to protect power cables, transformers, isolators, surge arresters, bus bars, electrical motors, capacitors, and other electrical equipment.

The fuse is also suitable for outdoor applications, such as on transmission towers, power lines, and even underground cabling. It can provide protection against high frequency surges, magnetic fields, and lightning strikes. Furthermore, the HVW-2 fuse also has the ability to trip quickly, making it suitable for fast-fault protection.

The HVW-2 fuse also has a wide range of rated current values, so it can be used in different applications depending on the requirements. These include motor protection, motor short-circuit protection, transformer protection, and generator protection.

Working Principle

The HVW-2 fuse works by having a meltable element inside the fuse which melts when the current exceeds the specified limit. This causes the fuse to blow, thus shuttering the current flow and protecting the connected equipment.

The meltable element is designed in such a way that it melts quickly during short-circuits, which ensures fast response times without compromising the equipment. On the other hand, during overloads, the fuse has a slightly longer response time, which allows the over-current to be duly protected without interrupting the normal current flow.

The meltable element is mainly made of a metal alloy such as copper, nickel, zinc, or tin. This alloy takes a certain amount of time to melt, thus ensuring that the fuse trips at the specified time. It is also designed to be temperature dependent, meaning that the fuse trips faster as the temperature increases.

Furthermore, the fuse is also designed to withstand high levels of moisture and vibrations, so it can be used in harsh environments without any issues.

Conclusion

The HVW-2 fuse is a reliable fuse that can be used for medium and high voltage applications. It has a wide range of applications, from motor protection to transformer protection and can be used in outdoor applications as well. Its operating principle is based on the melting of a metal alloy when the current exceeds a certain limit, thus shutting off the current and protecting the connected equipment.

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