First Principles of a Gas Discharge Tube (GDT) Primary Protector
Gas discharge tubes are extensively used for the protection of telecommunications plant and equipment against overvoltages caused by lightning, power switching and fault conditions. This document covers:
- Bourns part numbering for discrete components and 5-pin modules and the general operation of a GDT.
- Investigating how the key electrical parameters and their relationships relate to each other with ramp and surge waveforms.
- Defining the expected ramp impulse and surge impulse of a GDT.
- The life cycle of a GDT under surge and how its parameters change over its life.
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