B88069X8740B502

Series:	T23-A230X
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Voltage - DC Spark Over (Nom):	230V
Impulse Discharge Current (8/20µs):	20000A (20kA)
Tolerance:	±20%
Number of Poles:	3
Fail Short:	No
Mounting Type:	Through Hole
Package / Case:	Axial Cylinder, 3 Lead (Radial Bend)

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Gas Discharge Tube Arresters (GDT)

Gas Discharge Tube Arresters, or GDTs, are an essential part of industrial and commercial electrical systems, providing protection from lightning strikes and transient voltages. GDTs are used in both direct as well as alternating current (AC) systems. They are designed to allow normal current to operate the device, while preventing overvoltages from damaging the device. The B88069X8740B502 GDT has been designed to meet the demanding needs of modern applications, providing excellent overvoltage protection.

Design and Operation

GDTs are designed to protect sensitive components from damage caused by high voltage transients. This is done by using the breakdown voltage of a gas-filled tube to divert the excess voltage away from the system components. The design of the B88069X8740B502 GDT consists of two electrodes sealed into a chamber containing gas, such as air or nitrogen. The electrodes are placed at opposite ends of the bathtub, with the distance between them either being variable or fixed. Generally, the distance between the electrodes is greater than the breakdown voltage of the gas, and thus no current flows between them. When the voltage applied to the GDT is greater than the breakdown voltage of the gas, a spark is produced between the electrodes, causing an intense arc to develop. This arc becomes the primary discharge path for the electrical current, allowing the excess voltage to be “diverted” away from the system. This protects the components in the system from the damaging effects of high voltage transients.

Application Fields and Working Principle

The B88069X8740B502 GDT is mainly used in AC power protection applications. It is designed to protect AC systems from transient overvoltages, including lightning strikes and electrostatic discharges. The device has an AC voltage tolerance of up to 5000 V, making it well suited for protection of high voltage systems. The working principle of the B88069X8740B502 GDT is similar to other GDTs, in that the breakdown voltage of the gas determines the amount of voltage that can be “diverted” away from the system components. When the applied voltage exceeds the breakdown voltage of the gas, an arc is formed between the electrodes. This arc provides an alternative low impedance discharge path for the electrical current, thus protecting the sensitive components in the system from damage. The B88069X8740B502 GDT has a “Dry Arc Extinguishing” feature, which allows for the arc to be extinguished quickly after the voltage returns to normal. This feature allows the device to protect against continuous overvoltage situations, as the arc can be extinguished and resumed as needed.

Conclusion

The B88069X8740B502 GDT is an important component in any AC protection system. It is designed to provide robust protection against transient overvoltage events, such as lightning strikes and electrostatic discharges. The device’s “Dry Arc Extinguishing” feature allows for the arc to be extinguished quickly, thus providing effective protection against continuous overvoltage situations. The B88069X8740B502 GDT is thus a reliable and effective solution for providing AC system protection from high voltage transients.

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