2038-20-SMLF

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Gas Discharge Tube Arresters (GDT) are a critical component in the protection of electrical systems from high voltage spikes, surges, and lightning strikes. They offer an excellent alternative to conventional fuses and are widely used in transmission lines, distribution networks, and industrial networks. The 2038-20-SMLF application field and working principle is an important development in the use of GDTs.

The 2038-20-SMLF application field includes residential and commercial power distribution lines. The devices are designed for outdoor use and must be able to withstand a wide range of environmental conditions. The hermetically sealed metal-ceramic construction is capable of withstanding up to 20kV in normal operation and 50kV in surge testing.

GDTs have a simple three-stage structure. The first stage is a glass spark gap. This spark gap is filled with a gas such as air and has a potential break-down voltage. When a high-voltage pulse is applied to the spark gap, a spark forms that breaks down the gas and conducts electricity through the device. The second stage is a gap capacitor. This gap capacitor stores energy during the breakdown process and helps to reduce transient overvoltage. The third stage is a discharge element, which serves to limit the maximum output voltage.

In addition to the basic structure of the device, several other features are important for the proper functioning of the 2038-20-SMLF GDT. The spark gap includes a protective shield that prevents Carbonization from forming on the surface of the gap during operation. Additionally, the gap capacitor is pre-stressed to ensure that the capacitor remains as a low impedance element during operation. Another critical feature of the device is the Internal Voltage Limiter, which helps to limit the peak voltage of the internal discharge element.

The working principle of the 2038-20-SMLF GDT is based on the process of charge-discharge cycling. During normal operation, surges and lightning strikes are applied to the spark gap, creating an electrical arc. This arc causes the charge stored in the gap capacitor to be released in a series of pulses which results in the breakdown of the gas and the conduction of a large current. The Internal Voltage Limiter then limits the peak voltage of the internal discharge element, preventing the arc from creating overvoltages.

The 2038-20-SMLF GDT is a reliable and cost-effective solution to the problem of high-voltage spikes, surges, and lightning strikes. Its hermetically sealed metal-ceramic construction ensures it is able to withstand a wide range of environmental conditions. Additionally, its spark gap includes a protective shield to prevent Carbonization from forming during operation and its gap capacitor is pre-stressed to ensure it remains as a low impedance element. Its Internal Voltage Limiter helps to limit the peak voltage of the internal discharge element, making it an effective solution for power network protection.

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