Application principle of insulation paper automatic BLDC brushless motor stator coil insertion machine

Solids used to isolate different conductors. Solid insulating materials are also generally required to have a supporting role. Compared with, solid insulating materials due to the higher density, and therefore much higher breakdown strength, which is important to reduce the insulation thickness. Solid insulation material insulation resistance, dielectric constant and a wide range of variations. For example, the insulation resistance of PTFE can be as high as 10 (Ωm, thus preventing excessive leakage current, while its relative permittivity is very low, only 2.0, so that the insulation capacity becomes very small; corresponding to this, high dielectric ceramic has a particularly high relative permittivity, up to several thousand. Therefore, they can be selected according to different requirements.

Solid insulating materials can be divided into two categories: inorganic and organic.

Inorganic solid insulating materials are mainly, powder mica and mica products, glass, glass fiber and its products, as well as electric porcelain, alumina film, etc.. They are resistant to high temperature, not easy to aging, with considerable mechanical strength, certain of these materials such as, etc., low cost, in the application of a certain position. The disadvantage of inorganic solid insulating materials is that the processing performance is poor, not easy to adapt to the electrical equipment on the molding requirements of insulating materials.

Mica and powder mica products with long-term corona resistance, is an important part of the insulation structure of high-voltage equipment, can also be used in high-temperature occasions.

Glass is a simpler process than ceramics and can be manufactured. Glass fiber can be made into silk, cloth, tape, with much higher heat resistance than organic fibers, plays an important role in the development of insulation structures to high temperatures.

Electric porcelain products have excellent discharge resistance, but also has a certain mechanical strength, so it is particularly suitable for high-voltage transmission and distribution occasions. After years of research, and the development of high mechanical strength, high temperature resistance and high dielectric constant varieties.

Organic solid insulating materials in the 19th century to natural-based, such as paper, cotton, silk, vegetable oil can be cured. Since the 20th century, the emergence of synthetic polymer materials has fundamentally changed the face of solid insulating materials. The earliest is gum wood was used as insulation materials, a little later appeared polyethylene, polystyrene, due to their dielectric constant and particularly small to meet the requirements of high frequency, adapt to the development of new technologies such as radar. Silicone resin combined with less alkali glass cloth, greatly improved, the heat-resistant grade. Polyvinyl acetal for the enamel base made of enameled wire opened up a broad prospect of enameled wire, replacing the silk and yarn wrapped wire. Polyester film thickness of only a few dozen microns, with it instead of the original paper and cloth, so that the motor, the technical and economic indicators of electrical appliances greatly improved. Polyaramide fiber paper and polyester film, polyimide film used in conjunction with the motor slot insulation insertion machine heat-resistant grade F and H level, respectively (see). Elastomeric materials have similar developments, such as heat-resistant silicone rubber, oil-resistant nitrile rubber, and subsequently fluorine rubber, ethylene propylene rubber, etc.

WhatsApp/Wechat: +86 13075286997

Email: sales@vacuz.com [fusion_form form_post_id=”431″ margin_top=”” margin_right=”” margin_bottom=”” margin_left=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=””][/fusion_form]