SA2-7200-CBB-STD

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Gas Discharge Tube (GDT) arresters are critical components in the power system to provide protection from lightning strikes and other overvoltage events. This article will discuss the application field and working principle of the SA2-7200-CBB-STD GDT arrester.

Applications of the SA2-7200-CBB-STD

The SA2-7200-CBB-STD GDT arrester is designed for both overhead and underground applications. It is widely used in a variety of industrial and commercial applications. It is suitable for medium and high voltage applications, ranging from 4.16kV to 21.6kV. It can be used on either high side or low side of the transformer.

The arrester is suitable for applications in single pole or multi-pole systems. It is also suitable for parallel operation. For low-impedance systems, the SA2-7200-CBB-STD can be used as a single element lightning arrester for protection against overvoltage due to lightning strikes. This arrester is particularly suitable for applications such as serially connected lines, shunt-connected lines, and radials.

Working Principle of the SA2-7200-CBB-STD

The SA2-7200-CBB-STD works by diverting the surge current caused by an overvoltage event away from the power system. The arrester consists of a gas-filled tube surrounded by a metal housing. During normal operation, the tube prevents current from flowing. However, when the voltage exceeds the breakdown voltage of the tube, a high-energy electric arc is created. This arc diverts the current away from the power system and completely dissipates it, protecting the system from further damage.

The SA2-7200-CBB-STD GDT is also designed to be self-healing. When the overvoltage clears, the arc is extinguished and the gas-filled tube reforms into its original shape, restoring the system back to normal functionality.

Conclusion

The SA2-7200-CBB-STD is a versatile C class GDT arrester designed for both overhead and underground applications. It can be used to protect the power system from overvoltage damage due to lightning strikes and other events. The arrester works by diverting the surge current away from the power system, and is also designed to be self-healing.

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