GTCN38-251M-Q10

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Gas Discharge Tube Arresters (GDT)

The GTCN38-251M-Q10 is an Arrestor belonging to the Gas Discharge Tube Arresters (GDT) series, which is a voltage-dependent, nonlinear form of protective device used to protect electric power and communication systems from the effects of over-voltage transients. These transient phenomena are usually caused by lightning, electric motor and electric generator faults, as well as unbalances in power distribution networks. This type of Arrestor is mainly designed to have a specific Time to Discharge (TDD) characteristic specified as a range between 50 ns and 5 µs, and a sustained voltage which should remain constant (or lower) after the arrester is discharged by the particular transient event. In general, GDTs should be highly efficient in eliminating high-level electrical over-voltages, while having a low self-triggered voltage so it can maintain the device\'s rated performance when presented with multiple disturbances.

Application Field and Working Principle of GTCN38-251M-Q10

GTCN38-251M-Q10 Arrestors are mainly used to protect high-voltage power and communication equipment from transient voltage surges in the power distribution network, as well as devices connected to it. Typical applications include transmission lines, transformers, switchgears, motors, generators, automobiles, wind turbines, and other large electrical components. The arrested voltage level can range between a few volts and hundreds of kilovolts. The main application field of the device is in large industrial plants such as steel and water treatment plants, airports, and other sites located in areas with high lightning activity.

In brief, the GTCN38-251M-Q10 works by taking advantage of the nonlinear behavior of electricity when it is exposed to a sudden high voltage. When the voltage reaches a certain level (the voltage at which the arrester begins to operate, known as the Trip Level Voltage - TVL), a spark is created inside the tube and an electrical arc is created. This arc heats up the tube to extremely high temperatures, which naturally acts to reduce the charge intensity. This process is known as plasma formation. The tube is then able to limit the flow of charge to a minimum, thus preventing further damage to the equipment it is protecting. In addition, the device is designed to be self-recovering and to reset after a few seconds once the voltage returns to its normal level.

To ensure safe operation and long service life, the GTCN38-251M-Q10 GDT is also designed with state-of-the-art over-voltage protection such as spark gap protection, limiting voltage, and current limitation. Moreover, the external and internal components are designed to be corrosion-resistant, temperature-resistant, and EMI-resistant, so that the arrester can effectively protect power systems even in the most rugged and harsh environments.

In conclusion, the GTCN38-251M-Q10 arrester is an essential component of any power system. It is especially useful in areas with high lightning activity and is one of the most reliable and cost-effective methods for protecting against overvoltage. Its fast response time and highly reliable protection makes it ideal for large industrial and communication systems.

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