CG2600LSN

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Gas Discharge Tube Arresters (GDT) comprise a variety of protection components for electrical systems. GDTs are used to protect equipment and lines from transient overvoltages, and for surrounding lightning protection. CG2600LSN is a high-voltage, low-energy GDT constructed in a rail-mounted housing, designed for medium-voltage application fields. In this article, the application field and working principle of a CG2600LSN GDT will be discussed.

CG2600LSN is typically used in medium-voltage applications, such as high-voltage overhead power lines (HVOPL), communication and instrumentation signal lines, and in internal protection of transformers, generators, power plants and distribution networks. It is designed for maximum rated discharge current of 5kA, with a discharge gap of 100 μm. It comes with a wide range of mounting accessories for easy installation in junction boxes, and can be used in place of high-voltage protection components such as spark gaps.

The working principle of CG2600LSN is based on gas discharge breakdown. This involves the flow of an electric current between two electrodes, when a dielectric medium is placed between them. It occurs when the voltage on the electrodes exceeds the dielectric’s breaking point, which is known as the breakdown voltage. In the case of GDTs, the dielectric is a gas. When a high voltage appears on the GDT electrodes, the gas breaks down, allowing the current to flow across the electrodes. The end result is the dissipation of the overvoltage spike.

CG2600LSN is therefore used to provide medium-voltage overvoltage protection. As soon as the applied voltage exceeds the rated discharge voltage of the GDT, the gas within the tube breaks down and the energy is transferred to a low resistance ground path, protecting the sensitive electronics and wiring from the high-voltage spike. CG2600LSN provides excellent protection against lightning strikes, power surges, and other external overvoltage disturbances.

In conclusion, the CG2600LSN gas discharge tube arrester is used to protect medium-voltage systems from transient overvoltages. Its principal application is for overhead power lines, communication and instrumentation signal lines, and in internal protection such as transformers, generators, power plants and distribution networks. The working principle of the GDT is based on gas discharge breakdown, where the gas within the tube breaks down and the energy is transferred to a low resistance ground path, protecting the sensitive electronics from the high-voltage spike.

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