2037-40-A

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The 2037-40-A Gas Discharge Tube Arresters (GDTs) are a form of overvoltage protection devices designed to protect electrical and/or electronic circuits, systems and equipment from external surges or spikes, such as caused by lightning strikes. They are designed to provide a fast response to high-level voltage transients, while limiting the level of energy applied to the circuits or equipment. The design comprises of a spark-gap assembly encased by a protective enclosure, which is filled with an inert gas. This ensures a physical separation between the surge currents and the protected circuits which reduces arcing.

The 2037-40-A GDTs are suitable for a wide variety of applications and have a broad range of features. Typical applications include power line protection, television signal protection, telecommunications line protection, railroad signalling systems, and building control systems. The protected circuits and systems can range from as low as 10 volts to as high as 1,000 volts, allowing a wide range of operating voltages to be serviced. The unit is reliable, with a life expectancy of approximately 20 years for typical installations.

The 2037-40-A GDTs operate in a similar manner to a vacuum tube or other semiconductor device. A gas ionization chamber is created when the applied voltage exceeds the breakdown voltage of the spark gap. This causes ionization of the gas, which interrupts the incoming current flow, creating a spark. As the spark passes through the spark gap assembly, it creates a voltage that is lower than the incoming voltage, thus protecting the connected circuits from possible damage due to overload. The spark gap is designed so that the arcing will occur for an impulse voltage equal to or less than the breakdown voltage, while at the same time allowing a low-current passage of a greater signal level than the breakdown voltage.

The breakdown voltage of the 2037-40-A GDTs can be tailored to exact specifications by adjusting the pressure of the inert gas, the capacitance of the spark gap, and the amount of current flow through it. The amount of spark gap capacitance helps to dampen any ringing that might occur after the initial high-voltage arc. Additionally, the spark gap is designed to quickly extinguish itself after the transient has passed. This ensures that the protected equipment does not receive any energy beyond what is necessary to protect it from the surge.

The 2037-40-A GDTs are also highly resistant to environmental factors, such as vibrations, aging, and corrosion. This is due to the materials used in their construction, they are not affected by humidity, as well as sunlight and other extremes of temperature. The units are also designed to dissipate heat quickly, preventing them from becoming hot enough to cause a fire or other safety hazard.

In conclusion, the 2037-40-A GDTs are an effective way to protect circuits, systems and outlying equipment from voltage transients due to lightning strikes or other events. The use of inert gas allows for a fast response time and the spark gap design ensures an optimal amount of energy is passed through the spark gap while allowing for a minimum amount to pass through the protected circuits. The units are also highly resistant to environmental conditions, allowing for reliable protection over the long term.

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