In the initial overall design of dry-type transformer products, most manufacturers chose the traditional winding radial tightening structure, that is, the two-color support plate and the two-color support plate of item 1 and 2 are inserted between the bottom pressure winding and the iron core column. The high-voltage and low-voltage side support plates, in addition, are stuffed with silicone round strips of about 80 to 100mm long in item 3 at the four positions on the left and right of the winding. vigorously transformer

Because the windings of the initial products are made of copper ring structure, and in the electromagnetic induction design scheme, the selection value of the magnetic density is low, generally around 1.55T, so most of the operating noise of the product can be well controlled. Taking SCB10-1000/10 products as an example, general manufacturers can operate in the middle of 48-51DB.

Dry-type transformer insulation material:

The strip-shaped flexible insulating material itself has the function of sound insulation; the strip-shaped flexible insulating material is used as an elastic element, which is placed in the cavity between the core column and the bottom pressure winding, and is reasonably separated, which has the effect of buffering the attenuation coefficient. According to people's statistical analysis, still taking SCLB10-1000/10 products as an example, it can reduce the full load noise of finished products by 8-10DB, which can generally be controlled between 47-50DB.