2026-23-C18

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Gas Discharge Tube Arresters (GDTs), sometimes called gas tubes, are devices designed to protect electrical circuits from potentially damaging high voltage transients. They can be used to safeguard both point-of-use and point-of-entry, main service entrance connections. The GDT’s wide range of applications and its operating principle make it an ideal device for a large variety of active and passive electronic and electrical protection systems. The 2026-23-C18 GDT arresters are specifically designed to be used in residential and commercial switchgear, standby power systems and power distribution centers.

A GDT is essentially a spark gap assembly composed of a nonlinear center tube connected between two electrodes at each end. This tube is filled with an inert gas, such as sulfur hexafluoride, and a set of metal pellets. When the voltage across the tube exceeds the ionization level, a spark will be created and the gas will conduct, allowing current to travel through the tube. In the event of an overvoltage transient, the GDT will provide a bypass path for the current, relieving the connected device from destruction.

The 2026-23-C18 GDTs from the Raychem Corporation provide high surge current and voltage protection through an innovative design. The center tube contains a high voltage spark generator which ensures a rapid closing of the gap and a stable spark. The gap size and the spark length are designed to ensure the arrester will tolerate a variety of overvoltage scenarios. The stable spark is also an effective way to avoid inappropriate arcing for frequencies of up to 400MHz. This leads to improved performance against high speed and low frequency voltage surges. The external design has a unique housing which helps to contain the spark within a controlled environment.

In addition to providing surge protection, the 2026-23-C18 GDTs also offer conditioning and noise immunity capabilities. The pellets in the center tube act as nonlinear resistors, isolating and reducing electrical noise. This helps to minimize electrical interference and noise on the connected circuits. The pellets also store energy and allow for an optimized transient response time, ensuring the circuit is protected in the event of a surge. The internal construction of the 2026-23-C18 GDTs prevents arcing which helps to reduce wear and tear and to extend the life of the device.

Power quality problems are becoming increasingly common in residential and commercial power grids. In order to protect the connected devices from the effects of a surge, power protection products such as the 2026-23-C18 GDTs need to be utilized. The GDT provides a high level of protection from transients, and its conditioning and noise suppression capabilities ensure that electrical noise does not affect the connected equipment. By employing the 2026-23-C18 GDTs in power protection systems, operators can ensure their systems are adequately protected from damaging voltage surges.

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