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Gas Discharge Tube Arresters (GDT)

GTCR38-231M-Q10 application field and working principle

Gas discharge tube arresters (GDT) are widely used in situations where surge protection is necessary. They are typically used in electrical equipment, automotive electronics, and communications applications. GTCR38-231M-Q10 arrester is one of special types of GDTs. It is mainly used in outdoor lightning protection.

Gas discharge tubes are metal cylinders filled with gas. When voltage is applied, the gas inside the cylinder ionizes and creates a conducting path. Once the overvoltage disappears, the gas reverts back to its original state. By allowing electric current to pass through in the event of a surge, the arrester prevents damage to the equipment. Other components such as capacitors may be needed as well, depending on the type of protection desired.

The GTCR38-231M-Q10 arrester is a three-electrode gas tube, which is designed to protect outdoor telecom installations from forced lightning. It is a specially designed triode shaped arrester tube and directly mounted outdoor without any enclosure. The lightning protection zone for the arrester is separated by two electrodes inside the tube. The two inner electrodes are the spark gap segments that provide the first level of protection, while the outer electrode acts as the second level of protection.

When a surge is detected, electric current is conducted across the spark gap segments and into the outer electrodes. When the voltage at the spark gap is higher than the pin-to-pin voltage, the spark gap is turned on and a breakdown is triggered. The voltage across the spark gap will then drop to a safe level and keeps the equipment from being damaged. The GTCR38-231M-Q10 has a high breakdown voltage rating with no damage to insulation in operation after a lightning strike. In addition, it features low reverse leakage current and high surge current capacity.

In summary, the GTCR38-231M-Q10 arrester is motivated to provide protection against lightning and other transient voltages. It is used for protection against lightning in outdoor installations. It provides high voltage breakdown protection, low reverse leakage current, and high surge current capacity. It is an effective and cost-efficient component for outdoor electrical installations.

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