T049238

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Gas Discharge Tube Arresters (GDTs) are protective devices that help to ensure the safe and reliable operation of high voltage electrical systems. They are used extensively in industrial, commercial, residential, and automotive applications to protect sensitive components and personnel from sudden electrical transients. The protection afforded by a GDT is derived from two distinct functional components; a gas shield that prevents the formation of hazardous “arcs” between high voltage lines, and an electrical breakdown system that redirects any induced electric transients away from the system.

T049238 GDT Arresters belong to this variety of Arresters and are designed for use in medium and high voltage AC electrical systems. They are used to protect equipment, transformers, and other high voltage components from the effects of induced transients. The GDT Arrester functions as a voltage-dependent valve that is able to respond rapidly and effectively to overvoltages.

The working principle involved in a T049238 GDT Arrester is based on a phenomenon known as Metal Oxide Varistor (MOV) effect. An MOV is a voltage-dependent semiconductor made from a material, such as zinc oxide, which exhibits a very high conductivity when subjected to an electric field. When the voltage of the system reaches a predetermined threshold, the MOV effect occurs, allowing the passage of current through the device.

The MOV effect is then further enhanced by a gas mixture, typically a combination of nitrogen and azobisisobutyronitrile (BIB-CN). This gas mixture is able to breakdown the electric field during an over voltage event, dissipating the excess electric energy as heat.

The combination of the MOV effect and the gas mixture works together to ensure that any voltage spikes, or transients, that may occur in the system are diverted away from sensitive components. This helps to reduce damage to the system, and prevents equipment failure or physical injury.

T049238 GDT Arresters also feature a self-restoring circuit that is designed to reset the protective device after the transient has subsided. This allows the equipment to continue functioning effectively, preventing excess energy from accumulating in the system and prolonging the life of components.

T049238 GDT Arresters are a reliable and cost-effective means of protecting electrical systems from the effects of induced transients. Their robust design ensures that they will withstand the toughest environments, while their self-reseting circuits provide long-term protection with minimal maintenance requirements.

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