What are the types of shell materials for box type substations? How to make a selection?

What are the types of shell materials for box type substations? How to make a selection?

Those who know about box transformers know that they are divided into European style box transformers, American style box transformers, and domestic type box transformers based on their structure (that is, they have the characteristics of European style box transformers and the load capacity of American style box transformers). According to these three different structural representations, the shell styles of the box transformer are diverse, and the name of the box transformer is named after different boards.

Non metal landscape box transformer casing

The non-metallic landscape type box transformer casing, also known as the landscape type cement box transformer casing, is generally made of high-strength cement concrete as the raw material for the casing. The box transformer has strong plasticity by adding high-strength chemical additives such as activator, retarder, accelerator, anti-seepage and plugging agent. It can be designed according to the surrounding environment, and since the overall structure is made of high-strength channel steel and made of corrosion-resistant cement, the product's lifespan is generally stronger.

Composite board box transformer housing

There are several common patterns of composite board box transformer shells, with various composite board materials such as PVC, high-strength alloy, galvanized, and aluminum zinc coated on the surface. Composite board board is generally made of high-strength metal as the substrate, and is an environmentally friendly sandwich board made of new insulation materials or rock wool board as the interlayer of the board. The box transformer casing made of this material has a relatively light weight and high corrosion resistance, making the overall equipment easy to install; However, the disadvantage is that the board will undergo various chemical reactions over time, causing embrittlement on the surface of the box, resulting in a relatively short lifespan of the composite board box's outer shell.

Carved board box transformer housing

The outer shell of the box transformer made of carved board material can be a high-quality colored embossed metal plate treated with a special layer, with a polyurethane insulation layer added with flame retardant treatment in the middle, and an aluminum foil insulation layer on the base. This type of board is also similar to the style of composite board, except that there are more than a hundred combinations of relief and color for the box transformer shell made of this material, making the style beautiful and atmospheric. The assembly of the carved board box transformer housing is simple and practical, not limited by seasonal environments, and has good insulation performance.

Metal box transformer housing

The outer shell of metal box transformers is mostly made of high-strength and corrosion-resistant metals such as galvanized sheet and stainless steel sheet. The overall structural structure has high strength and good heat dissipation performance, making it suitable for indoor and outdoor substation installation. Due to the fact that the equipment casing is made of integral sheet metal, it is easy to install and has a lower cost. However, the disadvantage is that the insulation effect is relatively poor, and the box is not suitable for humid and rainy areas, which is prone to leakage safety.

Other new box transformer shells

In addition to the above types of box transformer casings, there are also other new types of box transformer casings, such as the box transformer casing made of DMC insulation material board made of automotive bumper material, which is structurally safe and has insulation protection; A new non-metallic box transformer casing made of glass cement; Using brightly colored and insulated color steel plate composite box transformer casing, etc

Due to the variety of materials used in box transformers, it is necessary to choose the appropriate box transformer casing material based on the actual light conditions and environmental characteristics of your surroundings.

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