American Box-type Combination Transformer

The Structure Of The American Box-type Combination Transformer

The structure of the American box-type combination transformer is divided into two parts, the front is the wiring cabinet, the wiring cabinet includes high and low voltage terminals, high voltage load switch, plug-in fuse, high pressure tap changer operating handle, oil level gauge, oil temperature gauge, etc. The rear is the oil box and heat sink, transformer winding, iron core, high voltage load switch, plug-in fuse are in the tank body. The box adopts a fully sealed structure. The integrated box is a double-layer structure, and the high and low pressure chambers are placed above the transformer room.

European-style, American-style and integrated box variants have advantages and disadvantages, the volume of European-style box variants is larger, high and low voltage switches and transformers are located in a large housing, poor heat dissipation conditions, need to install mechanical exhaust devices.For American Box-type Combination Transformer, due to the direct external heat dissipation of the transformer cooling sheet, the heat dissipation conditions are relatively good, but its shape is worse than that of Europe, and its appearance is difficult to cooperate with the green environment such as residential quarters. The integrated box occupies less space, and the advantages and disadvantages are similar to the American box. In addition, the American-style, integrated box can only be manufactured in China with a capacity below 630kVA, and the European-style box can reach 1250kVA.