2057-47-BLF

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Gas Discharge Tube Arresters (GDT) are widely used in high and medium voltage power systems for protecting electrical equipment and lines from the effects of lightning currents and transient overvoltages. The 2057-47-BLF is a type of GDT arrester, which is a non-linear resistor capable of greatly reducing the magnitude of the transient overvoltages.

The 2057-47-BLF is composed of a Zinc-Oxide element connected in parallel with a Gas Tube element. The Zinc-Oxide element is the main part of the arrester, which acts as a resistor to limit the voltage applied to the electrical equipment or lines. A gas tube element is used to provide additional protection in the form of a low-resistance closed path in parallel with the Zinc-Oxide element. This reduces the voltage at the protected side of the arrester and also serves as an efficient dissipating path for the lightning impulse current.

The 2057-47-BLF\'s primary application field is as a surge arrester for protection against lightning induced transient overvoltages in high and medium voltage power systems. It has a high surge capability and a very wide response bandwidth for efficient protection of the electrical equipment under the most extreme conditions. When used in this application, the 2057-47-BLF is installed near the protected equipment, typically between the point of connection to the power system and the equipment.

The 2057-47-BLF\'s working principle is based on the physical characteristics of the Zinc-Oxide element and the gas tube element. The Zinc-Oxide element is constructed using Zinc-Oxide slices connected in a series or parallel arrangement. When a voltage exceeds the normal operating range, the Zinc-Oxide element begins to conduct, thus providing a low-resistance path and limiting the voltage across the protected equipment. Simultaneously, the gas tube element is activated, and its low-resistance closed path in parallel with the Zinc-Oxide element reduces the voltage and dissipates the lightning impulse current.

The 2057-47-BLF is extremely reliable even in extreme conditions, providing excellent protection to equipment from potentially damaging lightning currents and transient overvoltages. It is an effective and proven solution for providing surge protection in medium and high voltage power systems.

The specific data is subject to PDF, and the above content is for reference