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What are the main factors affecting insulation varnish failures in electronic transformers?

2023-03-03

What are the main factors affecting insulation varnish failures in electronic transformers?

The degree of cellulose cyclization and chain scission, as well as gas production, varies with temperature. At a specific temperature, the rates of CO and CO formation remain constant, meaning the concentrations of CO and CO gases in the oil increase linearly over time. However, as the temperature continues to rise, the rates of CO and CO generation begin to grow exponentially. Consequently, the levels of CO and CO in the oil are directly linked to the thermal aging of the insulating varnish in oil-filled transformers, making changes in these gas concentrations a reliable indicator of potential abnormalities in the paper layers within sealed transformers.

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What is the purpose of insulating varnish for electronic transformers?

2023-02-21

What is the purpose of insulating varnish for electronic transformers?

Electronic transformer insulation varnish is widely used in AC motors and electrical appliances. After each transformer core laminations are coated with the insulating varnish, they are divided into numerous conductors with very small cross-sectional areas. This significantly increases the resistance of the material, confining eddy currents to a narrow, thin layer within the lamination. When magnetic flux passes through these narrow cross-sections of the laminations, the net electromotive force induced in the resulting current loops becomes minimal, while the loop lengths remain relatively long and the overall resistance rises. As a result, eddy current losses—though still present—are drastically reduced compared to solid-core designs. Thus, applying electronic transformer insulation varnish not only minimizes eddy current losses but also enhances the efficiency and safety of the transformer, making it a highly effective solution for modern electrical applications.

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What is the purpose of insulating varnish for electronic transformers, and what does the process involve?

2023-02-11

What is the purpose of insulating varnish for electronic transformers, and what does the process involve?

What is the purpose of using insulating varnish for electronic transformers? And what does the application process entail? **I. The Purpose of Using Insulating Varnish for Electronic Transformers** 1. **Enhancing Electrical Insulation Performance** It improves the electrical strength and insulation resistance of the transformer's insulation system, ensuring that the transformer meets the required standards for electrical insulation performance.

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Applications and Precautions for Water-Based Insulating Coatings

2023-02-01

Applications and Precautions for Water-Based Insulating Coatings

Water-based insulating paint refers to insulating paint that uses water as its primary solvent, and it is categorized into water-soluble and water-emulsion types. Improper handling of water-based insulating paint can lead to several adverse reactions, primarily manifesting in the following ways:

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Precautions for Using Water-Based Insulating Paint

2023-01-12

Precautions for Using Water-Based Insulating Paint

As society evolves, humanity’s awareness of protecting the environment continues to grow. For the motor industry, this has led to increasingly stringent requirements and regulations—particularly in areas such as hygiene, environmental sustainability, and workplace safety. Consequently, companies are strengthening their commitment to green production practices. Notably, motor buyers from Western countries like the United States, Japan, and the European Union have explicitly begun demanding that suppliers use eco-friendly insulation coatings. As a result, developing and adopting environmentally friendly, water-based insulation paints has become an urgent necessity. It’s important to note that uncleaned, water-soluble insulation coatings can lead to electrical leakage—or even cause motors to burn out—so thorough drying is essential to ensure proper insulation performance.

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What should be noted when applying water-based insulating paint resin?

2023-01-03

What should be noted when applying water-based insulating paint resin?

Water-based insulating paint resin acts as a UV stabilizer; the reinforcing agent, functioning as a pigment, enhances the material's mechanical properties, increases its opacity, reduces costs, and even modifies the material's electrical and thermal conductivity. Before curing, it remains in liquid form with excellent flowability, though the viscosity of the adhesive can vary significantly depending on the product’s material, performance characteristics, and manufacturing process.

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Key points about water-based insulating paint

2022-12-23

Key points about water-based insulating paint

A manufacturer introduces water-based insulating paint, which is a coating boasting exceptional electrical insulation properties. It exhibits excellent electrochemical, thermal, mechanical, and chemical performance. Most commonly available are clear and pigmented versions. Insulating paint is a specialized type of paint—indeed, it’s a crucial insulating material formulated on a polymer base that can cure under specific conditions to form an insulating film or solid insulator.

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What are the characteristics of water-based insulating paint?

2022-12-13

What are the characteristics of water-based insulating paint?

As China’s coatings market continues to expand, the variety of products and brands available has grown significantly—yet quality remains uneven across the board. Whether it’s three-proof coating for circuit boards or insulating paint, these products predominantly rely on benzene-based compounds, with benzene, toluene, and xylene serving as essential solvents in traditional paints. Moreover, the additives and thinners used in conventional paints can pose health risks to humans. That’s why, when a paint that’s both environmentally friendly and safe for people finally emerges, it quickly gains widespread recognition—enter waterborne insulating paint, the eco-friendly alternative that’s here to stay.

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Common sense about water-based insulating paint

2022-12-05

Common sense about water-based insulating paint

Water-based insulating paint is an essential insulation material, based on polymers that can cure into an insulating film or solid under specific conditions. As a critical component in motor manufacturing, insulating paint plays a vital role not only in the motor production and processing stages but also in the upstream materials used for motor products. Whether driven by environmental concerns or aimed at safeguarding the occupational health and safety of operators, enhancing the safety and eco-friendliness of insulating paints has become an inevitable and irreversible trend.

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Water-based enamelled winding wire insulation paint will replace solvent-based insulation paint.

2022-11-23

Water-based enamelled winding wire insulation paint will replace solvent-based insulation paint.

As China's coatings market continues to expand, the variety and brands of paints available have become increasingly diverse—ranging from high-quality products to those with mixed reputations. However, whether it’s three-proof coating for circuit boards or insulating paint, these products predominantly rely on benzene-based compounds, with benzene, toluene, and xylene serving as essential solvents in paint formulations. Moreover, the additives and thinners used in conventional paints can also pose significant health risks to humans. That’s why, when a truly eco-friendly and human-safe coating emerges—such as water-based enamel insulation varnish for coated wire—it’s bound to gain widespread acceptance and admiration.

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Guangdong Shunde DADIYUAN New Materials Co., Ltd. is a high-tech private enterprise specializing in the research, development, and production of premium water-based insulation materials and solvent-free insulating coatings. 

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Guangdong Shunde DADIYUAN New Materials Co., Ltd.

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