220kV Oil-immersed Power Transformer

Core Performance Features

1.Iron core structure optimization:

A six-stage joint and fully inclined non-porous structure is adopted. The upper and lower yokes are designed as continuous yokes.

2.Coil processing precision:

The coil is wound by a vertical winding machine and tightened by an air tensioning device. The blank coil is dried by vapor phase coal oil to ensure complete dehydration. After being pressed by a 200t hydraulic press, the axial height of the coil can be stably maintained at a constant level.

3.Assembly accuracy guarantee: 

The coils are assembled in the purification workshop. Before assembly, an infrared vertical and horizontal level gauge is used to measure the verticality of the iron core column to ensure the concentricity between the coil and the iron core, thereby enhancing the operational reliability of the product.

4.The oil tank is of high quality: 

It adopts a flat-top structure. The top and bottom of the tank are made from a single piece of steel plate. After the overall pre-installation process is completed and passes the leak detection test, it undergoes overall sandblasting for rust removal. The rust removal grade can reach above Sa2.5, and the anti-corrosion performance is excellent.

5.The oil reservoir cabinet is safe and reliable: 

Through three-dimensional finite element strength analysis and Pro/ENGINEER solid modeling, and by adopting the advanced domestic automatic submerged arc welding process, it ensures that the welds of the oil reservoir cabinet have no risk of oil leakage.

Compliance & Standards

Key Technical Parameters

Picture Example