2026-40-C

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Gas Discharge Tube Arresters (GDT) are surge protection devices that are used to protect valuable electrical equipment against damage due to overvoltage. A GDT is a gas-filled tube filled with a conductive material, such as a metal or graphite, surrounded by an insulating material. When excessive voltage is applied to the GDT, the gas ionizes and forms a low-resistance discharge path diverting the current away from the protected circuit. This process of diverting the current in the event of an overvoltage helps to protect sensitive electrical equipments from damage due to excessive current flow.

The 2026-40-C is a GDT specifically designed for protection against AC (50/60 Hz) overvoltages. It is designed for service applications which require reliable protection against large surges on AC distribution lines, such as lightning strikes. The 2026-40-C has a voltage rating of 40 kV and a maximum discharge current of 20 kA. It is equipped with a built-in surge counter that allows easy monitoring of arrester energy dissipation. It also includes a three-position switch which allows for overvoltage detection, single-phase disconnection, or a combination of both.

The 2026-40-C is used for the protection of AC power systems, such as in substations, distribution networks, industrial plants, and utility companies. It is also suitable for telecommunications, medical, and military applications. It helps to protect sensitive electronics from damage due to overvoltages caused by lightning strikes, as well as fault currents from short circuits. It can also be used in high-voltage AC applications such as power plants, ships and aircraft.

The working principle of the 2026-40-C is relatively simple. When an overvoltage occurs on the AC power line, the 2026-40-C is designed to create a low-resistance, high-current discharge path which diverts the current away from the protected circuit. This has two main effects. First, it prevents the overvoltage from causing damage to the protected circuit. Second, it dissipates the energy of the overvoltage in the GDT, thus preventing the overvoltage from propagating further down the line and causing more damage.

In conclusion, the 2026-40-C GDT Arrester is a reliable and efficient device for the protection of AC power systems against overvoltages, such as those caused by lightning strikes and short circuits. It is easy to install and monitor, making it a popular choice amongst engineers and electrical utilities. It helps to preserve valuable electrical equipment by instantly and safely diffusing electricity away from protected circuits.

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