2035-20-A

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Gas Discharge Tube Arresters (GDT) are a useful tool in electrical engineering, used to provide protection for equipment from transient overvoltages. They are used to limit the amount of overvoltage present in a power system, as well as to reduce the duration of an overvoltage spike event. GDTs are typically composed of a vacuum-sealed glass tube, filled with a low-pressure gas designed to initiate the spark gap effect. The spark gap effect is the phenomenon that occurs when the electric field strength between two electrodes, separated by a defined space, increases to a value at which the gas ionization and current flow between the electrodes take place.

The most common type of GDT is the 2035-20-A model. It is widely used for surge protection of data communication lines and power supply lines. It is also suitable for the protection of high-voltage equipment and systems. The 2035-20-A GDT typically has two settings, a lower withstanding voltage (LWV) and a higher withstanding voltage (HWV). These settings are designed to protect equipment from both low- and high-voltage overvoltage events. The LWV setting should be slightly higher than the nominal voltage of the equipment, while the HWV should be significantly higher than the maximum voltage of the equipment being protected.

The working principle of the 2035-20-A GDT is based on the zener barrier effect. This effect occurs when a high voltage is applied across two electrodes surrounded by a dielectric gas. An electric discharge occurs in the gas, limiting the voltage and preventing possible destruction of equipment. The spark gap of a 2035-20-A GDT is designed to limit the high voltage in two stages. The first stage is the so-called ‘hardening’ stage, where the voltage reaches the LWV or HWV settings. The spark gap then rapidly switches from a high- to a low-voltage state, providing protection against further overvoltage events, and potentially reducing the duration of an overvoltage event.

The application fields of a 2035-20-A GDT are wide and varied. It is suitable for the protection of data communication lines, as well as high-voltage equipment and systems. It is used in a variety of industries, including power, telecommunications, instrumentation, lighting, manufacturing, and aerospace. The 2035-20-A GDT is also used in home and commercial buildings, where it can provide surge protection for electrical appliances.

In summary, the 2035-20-A GDT is a useful tool in electrical engineering, used to provide protection for equipment from transient overvoltages. It employs the zener barrier effect to limit the amount of overvoltage present in a power system, and can reduce the duration of an overvoltage event. Its application fields are wide and varied, and it can be used in numerous industries and situations, ranging from data communication lines to high-voltage equipment.

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