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Gas Discharge Tube Arresters (GDT)

GTCN28-900M-P15 application field and working principle

Gas discharge tube arresters, commonly known as GDTs, are voltage protectors designed to keep electrical equipment safe from overvoltage transients. They come in various types and ratings to meet the needs of a variety of applications. GTCN28-900M-P15 is a particular type of standard-sized GDT which is designed to provide voltage protection in applications involving overhead power lines.

A GDT is constructed of a cylindrical metal casing with a plate of insulating material sealed at one end. Inside the tube is an electrically conductive gas, typically nitrogen, which produces a spark across the electrodes when a voltage transient is applied. This creates a path of desirable current flow instead of damaging electrical surges.

When no surge voltage is present, the electrical field between the electrodes of the GTCN28-900M-P15 arrester is not sufficient to ionize the gas inside the tube, so no current flows. When an overvoltage transient appears, the electric field becomes strong enough to activate the tube producing an ionized conductive path from one electrode to the other. This allows the overvoltage transient to be dissipated as a surge of current through the arrester.

The GTCN28-900M-P15 is typically used for overhead power line applications involving voltages up to 900 volts. Its design makes it suitable for use in both positive and negative polarity circuits without the need for an external resistor. It offers excellent noise filtering capabilities and its insulated casing helps to provide protection against moisture and foreign particles. Its small size makes it easy to install and the high-performance design ensures that it will provide superior protection in a variety of applications.

The GTCN28-900M-P15 arrester is an effective solution for protecting electrical and electronic equipment from overvoltage transients. It is designed to be used in a variety of situations, from industrial settings to residential applications. Its small size and fast response time make it an ideal choice for overhead power line protection.

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