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

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Gas Discharge Tube Arresters (GDT)

Gas discharge tube arresters (GDTs) are electrical safety devices used to protect electrical equipment from voltages caused by fast transient overvoltages (Lightning). GDTs are essentially surge arresters that clip off high voltage spikes. They use gas-filled tubes, such as air, nitrogen, Sulphur hexafluoride (SF6) and other noble gases, to safely divert surges into the earth.

T049166 Application Field and Working Principle

T049166 type gas discharge tube arresters are designed to protect system insulation for electronic equipment. They are mainly used to protect AC power system and communication system against lightning stroke, AC and DC switching surge. The internal structure of a T049166 arrester is composed of spark gap, pressure relief device, surge voltage blocking modules，resistance and voltage cooperative module. When AC voltage surge appears, the spark gap will be triggered to conduct the surge voltage. Pressure relief device makes the gas the spark gap uses to be more stable to reduce high voltage surges. The surge voltage blocking module together with resistance and voltage cooperative module help the arrester do synchronous arc discharge, so that the surge voltage can be damped and blocked, and finally, the arrester will protect related devices.T049166 type GDTs are suitable for installation in a variety of lightening strike-prone environments. For example, their characteristics make them particularity suitable for high-frequency current network system protection as well as telephone system, power system, building wiring system and electronic equipment.

Relative Characteristics

Gas discharge tubes are made of an insulating arc tube that contains a noble gas fill at low temperature, with two metal-to-metal spark gaps connected in series. When operating, these contact arcs will rapidly discharge. The internal arc and contact arc resistances in the T049166 GDTs ensure that undersized surge currents will not occur. The internal spark gap of the GDT provides the non-linear voltage and current characteristic required to limit overvoltages inherent to power systems.The operating voltage of the T049166 GDTs is 340-400V (or customized). Its continuous operating voltage (COV) is less than 220V and its operating current (or short-circuit for a short time) is less than 0.4A, which make them suitable for outdoor and indoor use. The HP test passes 5600V for 2.5 min, and the dielectric strength is up to 16kV. Moreover, their impedance is 0-2 ohms and long-term operating current is 5mA. And their working temperature range is -20 ~ +105°C.

Conclusion

In conclusion, T049166 GDTs are designed to be effective surge protection devices for AC power systems, telecommunications systems, and electronic equipment. Their superior characteristics provide efficient protection against lightning surges and other transient overvoltages. As well as their streamlined internal structure, their cost-efficiency, durability and convenience make them perfect for high-frequency current network system protection tasks.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description