2056-47-B2LF

Gas Discharge Tube Arresters (GDT) are widely used in the electrical industry to protect electrical structures, cables, and equipment from transient overvoltages. The 2056-47-B2LF application field and working principle are no exception.

The 2056-47-B2LF is a type of arrester with a maximum voltage of 47 kilovolts (kV), maximum current of 20 kiloamperes (kA) and a minimum breakdown voltage of 2056 volts (V). The main materials used in the 2056-47-B2LF application include a zinc oxide pellet as the nonlinear element, two anti-surge support posts, and a support framework.

The working principle behind the 2056-47-B2LF can be explained by using two stages. During the first stage, the current will flow through the nonlinear element which is made of zinc oxide pellets. The pellets absorb the energy from the current and transform it into heat to reduce the magnitude of the current. The arrester then redirects the current to the main switch, which will isolate the line and stop the overvoltage from continuing past this point.

During the second stage, the overvoltage current will be led away from the arrester’s main switch, allowing gaseous and fine particles to discharge between the switched contacts. This process will further reduce the magnitude of the overvoltage current and prevent it from flowing beyond the structure it is protecting.

As a result, the 2056-47-B2LF application protects electrical structures, cables, and equipment from transient overvoltages. The two-stage protection provided by the arrester is designed to reduce the peak magnitude of the overvoltage current and prevent its further distribution.

GDTs can provide reliable protection against direct and indirect lightning strikes and power surges, and the 2056-47-B2LF can be used in medium-voltage networks and high-voltage networks to protect against these threats.

In conclusion, the 2056-47-B2LF is an important GDT used to protect electrical structures, cables, and equipment from transient overvoltages. It works by directing the current to the main switch, allowing gaseous and fine particles to discharge between the switched contacts, and reducing the peak magnitude of the current. This two-stage process ensures that the current will not flow beyond the structure it is protecting.