The main structure of the Dry-type transformer

The iron core of the Dry-type transformer is a stepped 45° fully oblique seam. Inter-turn, inter-layer, inter-segment insulation, and insulation cylinders are all composed of insulating paper or molded parts. The low-voltage coil is a foil type, and the high-voltage coil is a continuous type. The Dry-type transformer body adopts special measures to block and reduce noise. What is the main structure of a Dry-type transformer? Let's find out together.

Here is the content list:

l High voltage coil of Dry-type transformer.

l Low voltage coil of Dry-type transformer.

l Dry-type transformer iron core.

High voltage coil of Dry-type transformer.

The high-voltage coil of the Dry-type transformer adopts a continuous structure with high mechanical strength and good heat dissipation conditions, and the coil is wound on a molded insulating cylinder. The conductor is made of rectangular copper wire covered with insulating paper, and insulating paper is used between layers. The coil is impregnated by VPI vacuum pressure to form a solid whole. It avoids the shortcomings of high interlayer voltage, poor heat dissipation capacity, easy thermal breakdown, and low mechanical strength of the multilayer cylindrical coil, thereby improving the reliability of product operation. It has excellent moisture resistance, can withstand thermal shock, never cracks, and has a partial discharge greater than 5Pc. It is easy to decompose and recycle after the service life to protect the environment.

Low voltage coil of Dry-type transformer.

The low-voltage coil of the Dry-type transformer is a foil-wound structure, and the coil is made of high-quality copper foil and H-class insulating material. The insulating material and paper are used as the insulation system between the layers. The coil is immersed into a solid whole by VPI vacuum pressure. The product structure features: first, the coil has high mechanical strength and strong short-circuit resistance. Second, the coil has strong thermal shock resistance, and the product life is improved. Third, the coil has strong "moisture-proof, dust-proof, and salt-fog-proof" capabilities.

Dry-type transformer iron core

The iron core material of the Dry-type transformer is made of 0.2mm-thick high-quality and high-permeability silicon steel sheet with 45° full oblique lap. The iron core adopts a non-punched, drawn plate structure; the surface is coated with insulating paint, which is moisture-proof and rust-proof, low loss, and low noise. The operating noise is about 16db lower than the national standard, which can meet the national first-class residential area noise requirements.

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