T049739

Series:	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Moisture Sensitivity Level (MSL):	--

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Overview of Gas Discharge Tube Arresters (GDT)

Gas Discharge Tube Arresters (GDT) are electrostatic protective devices used to shield electronic circuits from damage caused by lightning, power surges, and transient voltages. They are typically incorporated into communication systems, power transmission and distribution networks, and data processing systems. These arresters are designed to absorb electrical shocks and dissipate them safely to the ground, ensuring the safety of the associated components and equipment.

T049739 Application Field and Working Principle

The T049739 is one type of Gas Discharge Tube Arrester (GDT) designed by AEG. It is intended for mounting directly on overhead or cable-end applications, such as overhead electrical lines, cable-end equipment, or similar installations. The arrestor is designed specifically for outdoor installations, shielding the circuitry from powerful lightning strikes and other electrically-induced stress events.The T049739 is composed of two distinct components, including a Voltage-Dependent Discharge Element (VDDE) and an Overvoltage Arrester (OVA). The VDDE contains both an activated gas-filled tube combined with temperature compensation, and a series combination of Philips Electric Field Arrester (PEFA). The PEFA technology utilizes an electret element or material, which responds to the charging of both AC and DC voltages. When the voltage exceeds a certain threshold, the electret discharges its energy via a controlling current, thus avoiding the damage that could be caused by an excessive voltage.The OVA, meanwhile, utilizes zinc-oxide varistors, and is intended for applications where high levels of power surge protection are required. This component uses an electrostatic method to arrest overvoltage strikes and limit the flow of current to the grounded circuit. The zinc-oxide technology is capable of protecting against high-voltage transients that are typically generated by lightning and other electrical events.

Conclusion

The T049739 Gas Discharge Tube Arrester is designed to provide easy-to-install, effective lightning and power surge protection for various outdoor applications. By combining a VDDE and OVA, the arrestor is able to deliver optimal protection from jolts, spikes, and transients caused by lightning strikes and other environmental sources. This device is reliable, robust, and cost-efficient, making it an ideal choice for users looking for an effective and reliable protection solution.

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