2026-23-CB

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Gas Discharge Tube Arresters (GDT) are active protective devices that protect electrical equipment against high impact current surges, lightning strikes and other electrical disturbances. They are typically used in transmission lines and power grids to protect equipment from the damaging effects of high voltage surges.GDTs are composed of an ionized gas, usually a sulfur hexafluoride, contained in a sealed tube. When a potentially damaging high voltage surge is applied to the tube, the gas inside ionizes, forming a plasma path that effectively shorts out the voltage. The current is then passed through a low resistance path, dissipating the energy.

2026-23-CB application field and working principle is one type of GDT. This particular type of arrester is used in medium and high voltage applications, such as power distribution networks, utility substations and large industrial installations. The 2026-23-CB arrester is designed to offer protection in applications up to 100kV AC and 150kV impulse.

The 2026-23-CB arrester consists of two interconnected chambers. The first chamber contains a ceramic tube filled with sulfur hexafluoride gas. When a higher than normal voltage surge is detected, the gas inside the tube ionizes, creating a high-speed (supersonic) ionized plasma channel that short circuits the incoming surge current. The second chamber contains an accelerated avalanche breakdown device, which prevents arcs from developing while the voltage falls back below the ionization level.

The 2026-23-CB arrester also has a special feature to guard against thermal overloading. When a higher than normal temperature is detected inside the tube, a thermal switch will open, limiting the amount of current that can flow through the arrester.

The 2026-23-CB arrester is also designed to self-repair after the surge or strike that caused the overvoltage condition. The high-speed plasma short circuit dissipates the overvoltage in microseconds, allowing the arrester to restore the normal operating voltage. This reduces downtime and eliminates the need for repair or maintenance.

In conclusion, the 2026-23-CB arrester offers excellent protection against high-voltage surges and strikes in medium and high voltage applications. It has a robust design with self-repair capabilities and thermal protection, making it an excellent choice for protecting critical electrical equipment.

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