2056-14-B3FLF

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Gas Discharge Tube (GDT) Arresters are surge arresters used to limit the distribution of high voltage across the power system. They are designed to provide maximum protection in the event of a surge or lightning strike. The 2056-14-B3FLF is a GDT arrester with a nominal operating voltage of 5.5kV (Unit 5.7/3.3kV at junction).

Application Field

The 2056-14-B3FLF GDT arrester can be used in a variety of high-voltage applications in substations, power plants, industrial, telecommunication and renewable energy systems. It is a dual-pole GDT arrester with a high voltage rating and an interrupting current rating of 10 kA. It also has an arc-over rating of 170kV.

Specifically, it can be used for direct lightning protection, power system transient protection and lightning-striking switched capacitors, as well as electric supply systems with high short-circuit currents. It provides an optimal protection solution for a wide variety of industrial, power, and telecommunication applications. In addition, it is also widely used to protect distribution transformers, power line insulators, and power cables.

Working Principle

Gas Discharge Tube Arresters (GDT) employ the phenomenon of spark gap switching. During an overvoltage surge, the spark gap breakdown and conducts the current which otherwise would damage the protected system and equipment components. The spark gap breaks down first, then the arc is extinguished in a fraction of a millisecond. This ensures that the possible damage is limited.

The design of GDT Arresters, such as the 2056-14-B3FLF model, includes several elements. First, there is the spark gap that works as an insulator, and the variable resistor that limits the gas discharge. The spark gap and the resistor protects the power system from surges and overvoltages in the event of a lightning strike. When an overvoltage occurs, the spark gap breaks down and it short-circuits the incoming overvoltage surge.

The second element, the resistor, limits the voltage from spikes, and guides the current to the anode body. Finally, the body, which is insulated to the environment, contains the spark gap and the resistor, and guides the current to the ground system.

GDT Arresters are designed to operate with high efficiency and reliability when exposed to high-voltage power surges. This makes them ideal for use in a variety of industrial environments. The 2056-14-B3FLF arrester is an excellent example of a reliable GDT arrester with a high voltage rating that provides reliable protection.

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