GTCN28-251L-R05

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Introduction:Gas Discharge Tube Arresters (GDT) are devices used in electrical systems to protect sensitive components and equipment from transient overvoltages, such as those caused by lightning events. Gas Discharge Tubes (GDTs) are one of the most important components in GDT Arresters, as they are responsible for providing the necessary surge protection from damaging overvoltages. The GTCN28-251L-R05 is a Quartz Sand Filled GDT with a Radial Double Side Construction. It is used primarily for low voltage applications, such as telecommunication and consumer electronics.

Application Field

The GTCN28-251L-R05 is designed for use in applications that require low surge protection such as telecommunication networks, consumer electronics, UPS, and industrial equipment. Its small size makes it ideal for placement in cramped equipment bays and its radial design provides high mechanical strength and resistance to shock and vibration. The tight tolerances of the quartz sand-filled construction provide more reliable and consistent operation, even in high humidity and extreme temperatures. It can be used in a wide range of temperatures from -40°C to +115°C.

Additionally, the GTCN28-251L-R05 can be used in audio equipment, as a line protector, for data entry interfaces, as a television antenna protector, and as an interim protection for long-term system reliability for appliances, office equipment, industrial control equipment, etc.

Working Principle

The working principle of the GTCN28-251L-R05 is based on the voltage-current characteristics of a gas discharge tube. When the transient voltage present in an electrical circuit rises above a certain threshold, it will break down the thermionic gap and an arc will form, limiting the magnitude of the voltage. The voltage-current curve of the GDT has two breakover points. The first breakover point occurs as the tube starts to arc over and the current rises to the peak current value. The second breakover point occurs when the tube reverts back to its original state, at which the current drops to a much lower, stable level.

The peak current value, also known as the switching voltage, is determined by the fill material and the size of the air gap. The switching voltage of the GTCN28-251L-R05 is specified at 1.7kV. This meter demonstrates the excellent surge protection capability of the GDT against overvoltage forces.

The Quartz Sand Filled GDT also has superior repetition characteristics, allowing it to withstand multiple transient surges with little wear and tear on the device. It can be used in a wide array of applications, from telecommunications networks to consumer electronics, providing reliable protection against overvoltage forces.

In summary, the GTCN28-251L-R05 is a Quartz Sand Filled GDT with a Radial Double Side Construction. It is designed for use in applications that require low surge protection such as telecommunication networks, consumer electronics, UPS, and industrial equipment. Its small size makes it ideal for placement in cramped equipment bays and its radial design provides high mechanical strength and resistance to shock and vibration. By utilizing the voltage-current characteristics of a gas discharge tube, the GTCN28-251L-R05 is capable of providing reliable protection for systems and equipment from transient overvoltages and other destructive forces.

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