GTCN28-251M-P15

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Gas Discharge Tube Arresters (GDT) has been widely used for electrical surge protection of communication and power systems, capable of suppressing overvoltage and pass transient surge current. GTCN28-251M-P15 is a kind of of GDT recently developed by the renowned global manufacturer ABB. In this paper, GTCN28-251M-P15 application field and working principle are presented and discussed.

GTCN28-251M-P15 gas discharge tubes are specifically designed for surge protection of high-speed digital circuits and networks in severe environmental conditions, such as mobile base stations, indoor applications, outdoor installations, and mobile applications. GTCN28-251M-P15 gas discharge tubes can effectively handle lightning induced surges up to 10 kV with a maximum discharge current of 8kA.

In terms of working mechanism, GTCN28-251M-P15 gas discharge tubes operate on the basis of a metal oxide semiconductor gas discharge trigger switch principle. This principle is based on the conductive arc concentration phenomenon, which is determined by the composition of the gas discharge tube medium. A breakdown voltage, fixed for a certain gas discharge tube, is generated in the medium during the overvoltage process. Then, the medium is filled with electrons, and the conductive arc is discharged after the overvoltage process terminates.

When GTCN28-251M-P15 is exposed to an overvoltage, free electrons in the gas discharge medium diffuse around the contact surfaces to initiate the process of the electric arc. This is the main reason for the relatively low discharge voltage of the gas discharge tube. The electric arc is then conducted through the electrode system, connecting one contact to the other, thus conducting the surge current. At the end of the process, current is interrupted, thus dispersing the arc and terminating the conduction. GTCN28-251M-P15 gas discharge tubes are voltage rated and have a maximum specified continuous operating voltage (COV) rating that should never be exceeded.

In addition, GTCN28-251M-P15 gas discharge tubes are made from composite materials and manufactured to withstand extreme temperatures, water, acid, alkali, UV and other harsh environmental conditions. Their construction enables them to handle more aggressive and corrosive environments, preventing increasingly commonly seen electrical corrosion problems.

GTCN28-251M-P15 gas discharge tubes can also be used in places such as data transmission systems, digital electronics, as well as computer and telecom systems, even in the most demanding applications. The combination of low insertion loss, high peak current capability, high speed response, and reliability of GTCN28-251M-P15, makes them perfect solution for suppressing transient surge current, protecting various communication and power systems against overvoltage.

To summarize, GTCN28-251M-P15 gas discharge tubes offer robust protection to communication and power systems in severe environmental conditions. Perfectly suited for outdoor applications, GTCN28-251M-P15 gas discharge tubes are capable of suppressing transient surge current over 10kV with a maximum current of 8kA. With its design based on the metal oxide semiconductor gas discharge trigger switch principle, GTCN28-251M-P15 is the ideal choice for lightning induced surges protection.

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