Important components of three-phase dry-type transformer

2022-10-10 09:25:33

199次

Three phase dry-type transformer is the main component of various power supplies and electrical equipment. It is a device that uses the principle of electromagnetic induction to change the AC voltage. The main components are the primary coil, secondary coil and iron core. In electrical equipment and wireless circuit, it is often used as voltage rise and fall, matching impedance, safety isolation, etc.

1. Core material: The core materials used in the transformer mainly include iron sheet, low silicon sheet and high silicon sheet. Adding silicon to the steel sheet can reduce the conductivity of the steel sheet and increase the resistivity, which can reduce eddy current and reduce its loss. We usually call the steel sheet with silicon as silicon steel sheet. The quality of the silicon steel sheet used for the quality of the transformer has a great relationship. The quality of the silicon steel sheet is usually expressed by the magnetic flux density B.

2. The commonly used materials for winding transformers are enamelled wire, sand covered wire, silk covered wire, and the most commonly used enamelled wire. The requirements for conductor are good conductivity, enough heat resistance of insulating paint layer and certain corrosion resistance. Generally, Q2 type high-strength polyester enamelled wire is preferred.

3. Insulation material: In wound transformers, insulation materials shall be used for the isolation between layers of coil frames and between windings. The general transformer frame materials can be made of phenolic cardboard, the layers can be separated by polyester film or telephone paper, and the windings can be separated by yellow wax cloth.

4. Impregnating material: after the winding of the transformer is completed, the last process is to impregnate the insulating paint, which can enhance the mechanical strength of the transformer, improve the insulation performance, and extend the service life. Generally, cresol varnish can be used as the impregnating material.

HENGFENGSHUAI ELECTRIC, is an electrical enterprise with transmission and distribution industry as its main business, integrating product research and development, manufacturing and trade. Designated suppliers for the world's top 500 enterprises .Its main products include power transformers, medium and low voltage switchgear, distribution panel ,circuit breakers, transmission tower ,Cable and other power distribution equipment .The group has five department: Transformer department, Panel department, power transmission tower department, cable department and electrical engineering department. HENGFENGSHUAI ELECTRIC, has been working hard to provide the best transmission, distribution solutions for users all over the world.【WhatsApp：+86158 5325 2696（Jack） +86158 5326 5269（Alisa）hfs@hengfengshuai.com https://www.hengfengshuai.com 】

label:winding transformers,power transformers,transformer

Website of this article:https://www.hengfengshuai.com/xyzx/248.html

上一篇：How to reduce voltage？

下一篇：What should be paid attention to when using transformers?