2026-25-A1F

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    Gas Discharge Tube Arresters (GDT) is a unique device that combines the protection of sensitive electrical and electronic equipment and direct grounding of surges. GDTs are diamond-shaped metal cylinders that act as a two-way switch. When an overvoltage is applied to the GDT, the current is prevented from entering the equipment by the current-limiting resistance provided by the metal cylinder. After the voltage has been lowered to safe levels, the current is allowed to flow from the GDT to the equipment. This process is known as “GDT tripping” or “GDT resetting.”

    GDTs are designed to provide protection from various levels of transient voltages, which are short-duration, high-voltage surges that can cause irreparable damage to sensitive electrical and electronic equipment. These surges typically occur when lightning strikes nearby or when utility power lines or other electrical equipment draw too much current for the conduits or equipment to handle. GDTs are installed as part of a surge protection system, usually between the main power source and the equipment to be protected.

    Furthermore, there are several types of GDTs that can be used for different applications, and one such example is the 2026-25-A1F. This GDT is often used in outdoor, high-voltage applications to provide protection up to 25 kV rms. The 2026-25-A1F is designed to withstand strong surge voltages of up to 100 kV peak. This GDT has an operating temperature range of -40°C to +85°C and can provide protection from both transient and constant overvoltages.

    The working principle of a GDT is based on a phenomenon known as “avalanche breakdown.” This occurs whenever the electric field inside the metal cylinder of the GDT becomes strong enough to break down the insulation between the inner and outer electrodes, allowing a high-current arc to form. This arc dissipates the energy stored in the overvoltage, limiting the voltage that reaches the equipment. After the surge is dissipated, the current can no longer flow and the arc stops. In this way, the GDT effectively provides protection from electrical surges.

    GDTs also have a number of advantages, such as being lightweight and relatively inexpensive. Furthermore, they are convenient to install and require little maintenance. GDTs can also provide a high level of protection against both transient and constant overvoltages, which is essential in sensitive electrical and electronic applications. Finally, GDTs have an environmental benefit, as they do not produce any electromagnetic radiation or field interference.

    In summary, the 2026-25-A1F is a Gas Discharge Tube Arrester, which is designed for high-voltage applications such as lightning protection. It provides protection up to 25 kV rms and can withstand transient surges of up to 100 kV peak. The working principle of a GDT is based on the phenomenon of avalanche breakdown, which allows a high-current arc to dissipate the energy stored in the overvoltage, thus limiting the voltage that reaches the equipment. GDTs are also relatively lightweight, inexpensive and convenient to install, and provide a high level of protection without producing any electromagnetic radiation or interference.

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