2046-40-C2FLF

Introduction

Gas Discharge Tube (GDT) arrester is, as its name suggests, an electronic device used to restrain an electrical current or provide protection from high voltage surges in electrical circuits. GDT arresters are equipped with an internal gas-filled tube which interrupts the current flow when an excess voltage level is detected. In simple terms, a Gas Discharge Tube arresters acts as a protective circuit breaker in the event of a power surge or overvoltage. It is also known as a surge arrester, lightning arrester, surge suppressor, or protector. This article discusses the application field and working principles of the GDT arrester, model 2046-40-C2FLF.

Application Fields of GDT Arresters

GDT arresters are a form of electronic protective equipment used in commercial and industrial environments, especially where long, continuous highvoltage electrical systems are present. All electro-mechanical devices, including motors, relays, breakers, control systems, and other sensitive components, require protection from electrical surges by installation of GDT arresters. GDT arresters provide high-voltage protection in industrial and commercial systems from surges, switching transients, and fault passage.

GDT arresters also protect communication and control systems, such as telecommunications apparatus, radio-frequency (RF) devices, automation, Ethernet, and SCADA systems from over-voltage events. They are also used to protect telecommunications and fiber-optic cables, as well as outdoor antennas, from electrical discharges, lightning, and other events that can cause damage.

Working Principles of GDT Arresters

The 2046-40-C2FLF GDT arrester is a DC arrester meaning it offers protection from overvoltage as well as undervoltage events. It features a gas-filled tube between two electrodes and a resistor in series with a spark gap that is connected to both electrodes. When an overvoltage event is detected, the tube within the GDT arrester activates, allowin current to momentarily shoot through much faster than normal operating levels. This causes the gas inside the tube to become ionized and prevents any further current from flowing. This effectively limits the voltage to a safe level thus protecting the circuit.

Once the surge has been stopped, the gas within the tube slowly returns to a non-conductive state and the device is reset. Since the gas is the only operating component, GDT arresters have a long operating life and require minimal maintenance. This makes them ideal for applications where long term reliability is a key consideration.

Conclusion

GDT arresters, such as the 2046-40-C2FLF model, are essential components of commercial, industrial, and telecommunications systems. As well as providing protection from over and undervoltage events, they offer excellent longterm reliability and require minimal maintenance.