2036-47-SM

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Gas Discharge Tube Arresters (GDT) are essential in protecting electrical equipment from excessive current that can occur during lightning and surge activity. The 2036-47-SM is a type of GDT developed specifically to respond to the needs of medium and high voltage applications in the power industry. In this article, we will discuss the 2036-47-SM application field and working principle.

2036-47-SM Application Field

The 2036-47-SM is a Medium Voltage GDT Arrester and is typically used in medium voltage power systems for voltage up to 15kV. This arrester is suitable for operation in both open air and inside underground applications. It is most often used in substation and industrial power networks as well as in high voltage power lines. As a GDT arrester, 2036-47-SM protects against high voltage transients generated by lightning, switching over-voltages as well as other high-temperature transients.

2036-47-SM Working Principle

The 2036-47-SM is a type of GDT that works by diverting the excessive current that occurs during a surge and limiting the voltage across equipment. This diversion is accomplished by creating a path between the points of high potential and low potential. When a current flows through the gap between the two electrodes, the gas inside the tube (usually a mix of air and nitrogen) breaks down and becomes conducting. This then creates a channel for the excess current to be diverted.

At normal operating voltage, the 2036-47-SM offers a high resistance level – allowing little to no current to flow through the device. Once an excess voltage greater than the nominal voltage of the device is present, the resistance of the gaseous medium within the GDT decreases dramatically allowing for the high current to be diverted through the GDT.

When the normal, or nominal, voltage is restored, the arrester automatically resets to its original high resistance state. This automatic reset allows the GDT to be particularly useful in a variety of surge protection scenarios.

Conclusion

The 2036-47-SM is a Medium Voltage GDT arrester designed to protect electrical equipment from excessive current during surge and lightning events. It is suitable for a variety of medium and high voltage applications and works by diverting current through a medium of nitrogen and air. When the nominal voltage is restored, the device automatically resets to its original high resistance state, making it an ideal device for surge protection scenarios.

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