T049058

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Gas Discharge Tube (GDT) Arresters are designed to protect electric power systems from transients due to lightning strikes or other sources. A GDT is basically a charge-storing capacitor connected across a spark gap. A spark gap is an electric circuit element that allows current to flow when a specified voltage is reached. When the voltage exceeds the prescribed level, an arc is produced within the spark gap and the current is prevented from flowing further into the power system.The GDT arrester is composed of a metal oxide varistor (MOV) and a spark gap. The MOV is basically a resistor that varies its resistance with the applied voltage. It is connected to the power system to protect it from transients. The spark gap is an electric gap with an air gap bridging two electrodes at a predetermined voltage. The spark gap is designed to break down at a specific voltage, limiting the amount of current from entering the power system.The working principle of the GDT arresters is based on the fact that when the voltage between the MOV and the spark gap exceeds a specific level, an arc is generated in the spark gap, limiting the amount of current that can flow into the power system. The MOV acts as a short circuit, absorbing the excess energy from the transient event and dissipating it as heat.The T049058 application field includes direct and alternating current wire and cable lines, low and medium voltage distribution systems, and various other distribution and telecommunications systems. GDT arresters are designed to protect electrical systems from transient overvoltages caused by lightning strikes, switching surges, mechanical shock, and other sources of electrical disruptions.The GDT arresters provide protection by detecting the voltage between the MOV and the spark gap and limiting the amount of current that can flow into the power system. When an overvoltage is detected, the arrester absorbs the excess energy by discharging the stored electrical charges into the power system. This limits the current that flows into the system, preventing damage to the power system components, and providing protection from transient voltage surges caused by lightning strikes or other sources.T049058 GDT arresters are constructed of a zinc oxide varistor body and a spark gap electrodes. The arrester is designed to be placed in front of or behind the power system components that need protection. The MOV acts as an energy absorber, dissipating the excess energy to the power system while the spark gap breaks down at a predetermined voltage level, limiting the amount of current into the power system.In conclusion, the T049058 Gas Discharge Tube Arresters (GDT) is designed to protect electrical systems from transient overvoltages caused by lightning strikes, switching surges, mechanical shock, and other sources of electrical disruptions. The GDT arrester is composed of a metal oxide varistor (MOV) and a spark gap. The MOV acts as an energy absorber, dissipating the excess energy to the power system while the spark gap breaks down at a predetermined voltage level, limiting the amount of current from entering the power system. These features make GDT arresters an effective tool for reducing power system damage from lightning strikes and other sources of electrical disturbances.

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