T049167

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Gas Discharge Tube Arresters (GDT) are an important component in electric power system protection. GDT provides overvoltages protection in lightning protection systems and power line applications. It can help to reduce the damage caused by overvoltages and protect the equipment from potential hazards. T049167 is a kind of GDT with high reliability and application.

T049167 Application Field

The application field of T049167 GDT includes but is not limited to the following electrical power system applications:

• Lightning protection equipments used in high voltage power lines
• Earthing and shielding systems of power transmission lines
• Surge overload protection of low - voltage consumer equipments
• Interference immunity equipments of power electronic equipments
• Substation protective equipments
• Surge protection devices of communication systems
• Automation equipments
• Remote measuring equipments

T049167 Working Principle

T049167 Gas Discharge Tubes arresters essentially consist of two major parts: a discharge gap assembly at one end and an anode gas tube at the other end. The discharge gap assembly includes a plurality of metal materials held together by a clay-like material. The anode gas tube is filled with an inert electric gas. When an overvoltage reaches the GDT stage, the gap assembly begins to discharge and the arrester dissipates the energy. The inert gas inside the anode gas tube helps to sustain the function of the arrester, so it can protect the equipment from getting damaged by overvoltages.

During normal operation, the anode gas tube maintains a constant current without any arc gap discharges. When the surge voltage exceeds the breakdown voltage of the gap, the gap discharges and the energy is absorbed by the GDT, so the load side will not be damaged. When the surge voltage is lower than the breakdown voltage of the gap, the gap will not discharge and the GDT will remain in standby. The current flowing in the anode gas tube remains constant and the GDT will not be triggered or damaged by any external impulse.

Conclusion

T049167 Gas Discharge Tube arresters are an important component in the electric power system and provide overvoltage protection. It is suitable for a wide range of applications from lightning protection, earthing and shielding systems to surge protection of communication systems and automation equipments. With proper installation and maintenance, GDTs can offer an effective protection against overvoltages and other potential hazards.

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