500E3CL5.5

Introduction

The 500E3CL5.5 power fuse is a type of current-limiting electrical power fuse designed to protect 21.8kV open air systems. It has been developed by European Fusebox, a company based in France. This device combines both a current and lightning limiters for open-air systems which are subjected to abrupt system under-voltages(SV) as well as variable current surges, waves, and transients. It has been designed to ensure a high degree of protection to an open-air system, while still maintaining safety and reliability. This article will discuss the application field and working principle of the 500E3CL5.5 power fuse.

Application Field

The 500E3CL5.5 power fuse is mainly used in open-air systems for the protection of 21.8kV lines. It is suitable for all environments and can work in wet, dry, and low temperature conditions. It is applied in lines that are exposed to external environmental conditions and have a danger of lightning strike.

This product is suitable for protecting both overhead lines and underground cables against overvoltage conditions caused by lightning strikes, power cuts, temporary outages or lines overloaded. It also provides protection against overcurrents and short circuits caused by equipment faults.

This fuse is also suitable for applications in very low voltage conditions, such as isolator circuits and signalling systems. It can be applied in communication and power equipment in order to protect it from damage caused by overloads, shorts and overloads caused by external environmental conditions.

Working Principle

The 500E3CL5.5 power fuse protects the open-air system from overvoltage, current, and lightning conditions in the following two ways:

1. It functions as a current limiter. This means that it limits the maximum current flowing through the system, thereby preventing overloading, overcurrents, and short circuits.
2. It functions as a lightning limiter. This means that it limits the amount of voltage passing through the system, thereby preventing overvoltages that could damage the system.

The 500E3CL5.5 power fuse is a combination of a current and lightning limiter. It is composed of two main elements: a current limiting element (such as a resistance or an inductance) and a lightning limiting element (such as a surge arrester or a surge arrestor).

The current limiting element is designed to limit the amount of current flowing through the system. This prevents the system from experiencing overcurrents and overloading. The lightning limiting element on the other hand is designed to limit the amount of voltage passing through the system. This prevents the system from suffering damages due to surges, transients, and sudden voltage drops.

Conclusion

The 500E3CL5.5 power fuse is an effective protection device for open-air systems. It combines both a current and lightning limiters for open-air systems subjected to abrupt system under-voltages(SV) as well as variable current surges, waves, and transients. It has been designed to ensure a high degree of protection to an open-air system, while still maintaining safety and reliability.