The basic structure of the box transformer is divided into the shape of "eye" and "product", the box skeleton is welded by high-quality channel steel and angle steel, which has high mechanical strength and good anti-corrosion ability, and the overall beautiful appearance can be coordinated with the surrounding environment by painting and coloring, and the well-designed bottom lifting device provides great convenience for installation, transportation and movement.

There are independent high-voltage chambers, transformer chambers and low-voltage chambers in the box transformer, and the lighting of each chamber is automatically opened with the opening of the door. The high-voltage room is equipped with high-voltage ring network switchgear, which can be selected according to the user's needs of compressed gas and vacuum load switches, and has the function of "five preventions", when the current-limiting high-voltage fuse is used when a phase fuse is fused, the load switch automatically opens, which avoids the failure caused by the lack of phase operation.

The transformer room adopts natural ventilation and automatic control of forced heat dissipation air cooling device, and has an exhaust system that is automatically controlled with temperature changes, which can effectively control and reduce the temperature in the box and meet the operation requirements. The box material can prevent rain and dirt from entering, and has the conditions for long-term outdoor use, ensuring anti-corrosion, waterproof, dustproof performance, long service life, simple maintenance, and beautiful appearance.

The transformer can be dry-type or oil-immersed transformer, and the oil-immersed transformer can be selected with oil pillow and oil-free pillow fully sealed.

The low-voltage chamber has the overall function of low-voltage complete sets of switchgear, which is for users to choose and combine at will.

The shell materials include composite plate, stainless steel composite plate, aluminum-zinc plate, stainless steel plate, metal carved plate and GRC material.

The high-voltage structure is reasonable and tight, and SF6, FZN57 and VHC ring main units can be selected, all of which have the function of five anti-interlocking.

Transformer natural ventilation and automatic ventilation cooling systems are available for both dry-type and oil-type transformers.

The low-voltage room can adopt a variety of structural power distribution schemes according to user requirements, including power distribution, lighting power distribution, reactive power automatic compensation, electric energy metering and other functions, and is equipped with an automatic lighting system.