What is Earthing Transformer ?

What is Earthing Transformer ?

Earthing Transformer

Earthing Transformer is a special transformer, its main function is to provide an artificial neutral point for the neutral point is not grounded system, easy to use arc suppression coil or small resistance grounding mode, in order to reduce the size of the ground capacitance current when the grounding short-circuit fault occurs in the distribution network, improve the power supply reliability of the distribution system.

Earthing Transformer structure

The structure of Earthing Transformer mainly consists of iron core, winding, insulation material and shell. The core structure is composed of silicon steel sheets of equal thickness, which can effectively reduce the loss of magnetic flux density, improve the efficiency of the core and ensure the stability of the output voltage. Winding is one of the most important parts in the Earthing transformer, and its structure is divided into two types: disc winding and long winding. The insulating material is mainly used to prevent the current from leaking into the winding and the iron core or the case of short circuit. The shell structure is to protect the transformer from mechanical damage and leakage during use.

Working principle of Earthing Transformer

The working principle of the Earthing transformer is to use the magnetic coupling effect of the transformer to isolate the neutral point of a circuit from the ground, so as to protect personal safety and prevent damage to electrical equipment. When the power grid is running normally, the working principle and function of the transformer neutral grounding resistance cabinet. The transformer neutral grounding resistance cabinet has a good effect on reducing the overvoltage of the power grid and improving the safety and reliability of the power grid. The grounding and installation of the 6-66K box-type transformer is the basic work that must be carried out before the use of the box-type transformer, and the grounding is an important part of ensuring the safe use of the box-type transformer. Next, I give you the function and specific connection method of the box transformer grounding brake. The box transformer grounding brake is a switching device that separates the box transformer from the grounding cable.

Type of Earthing Transformer

The Earthing transformer can be divided into oil type and dry type according to the filling medium; According to the number of phases can be divided into three phase grounding change and single phase grounding change. In addition, the ground transformer can also be divided into two-winding ground transformer and three-winding ground transformer according to the winding.