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Transformer Accessories and Auxiliary Materials
Transformer Insulation Components And Materials Custom
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No. of Product Width (mm) Model of Raw Yam (tex)   Model of Raw Yam (tex)  Mesh (mm)  Mesh (mm)  Mesh (mesh/inch)  Mesh (mesh/inch)  Weave Resin Content (%) Weight (g/m 2) Fracture Strength (N/50mm)  Fracture Strength (N/50mm) 
Warp Woof Warp Woof Warp Woof Warp Woof
1 1000-1250 32x2 204 5 5 5 ± 0.5 5 ± 0.5 union 20 ± 2 65 ± 3 500 500
2 1000-1250 50x2 255 5 5 5 ± 0.5 5 ± 0.5 union 18 ± 2 80 ± 3 800 900
3 1000-1250 100x2 306 5 5 5 ± 0.5 5 ± 0.5 union 18 ± 2 125 ± 3 1100 1300
4 1000-1250 134x2 357 5 5 5 ± 0.5 5 ± 0.5 union 18 ± 2 145 ± 3 1300 1500
5 1000-1250 134x2 408 5 5 5 ± 0.5 5 ± 0.5 union 18 ± 2 2160 ± 3 1500 1700
6 1000-1250 50x2 204 4 5 6 ± 0.5 5 ± 0.5 union 18 ± 2 80 ± 3 550 800
7 1000-1250 100x2 255 4 5 6 ± 0.5 5 ± 0.5 union 18 ± 2 110 ± 3 1100 1000
8 1000-1250 134x2 306 4 5 6 ± 0.5 5 ± 0.5 union 18 ± 2 150 ± 3 1400 1500
9 1000-1250 32x2 204 4 4 6 ± 0.5 6 ± 0.5 union 19 ± 2 80 ± 3 550 850
10 1000-1250 100x2 204 4 4 6 ± 0.5 6 ± 0.5 union 18 ± 2 120 ± 3 1100 900
11 1000-1250 134x2 255 4 4 6 ± 0.5 6 ± 0.5 union 18 ± 2 150 ± 3 1500 1600
12 1000-1250 134x2 306 4 4 6 ± 0.5 6 ± 0.5 union 18 ± 2 160 ± 3 1500 1800
13 1000-1250 50x2 306 5 6 5 ± 0.5 4 ± 0.5 union 18 ± 2 80 ± 3 500 1000
14 1000-1250 100x2 357 5 6 5 ± 0.5 4 ± 0.5 union 18 ± 2 110 ± 3 1000 1200
15 1000-1250 255x2 408 10 10 2.5 2.5 union 18 ± 2 220 ± 3 1000 1200
16 1000-1250 255x2 561 10 10 2.5 2.5 union 18 ± 2 125 ± 3 1000 1400
17 1000-1250 375x2 561 10 10 2.5 2.5 union 18 ± 2 145 ± 3 1400 1500
18 1000-1250 375x2 561 10 10 2.5 2.5 union 18 ± 2 160 ± 3 1500 1600
19 1000-1250 33x2 67 2.8 2.8 9 ± 0.5 9 ± 0.5 union 21 ± 2 45 ± 3 600 600
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Transformer Insulation Components And Materials Manufacturers

  • E-Glass Fiber Tape
    E-Glass Fiber Tape

    Precision-woven from high-quality E-glass fibers, this tape provides excellent electrical insulation, high-temperature resistance, and corrosion resistance. Its primary function is high-strength binding and insulation fixing for transformer, motor, and reactor windings—effectively securing coils and preventing loosening. It is also used for thermal insulation and fire protection in cables and high-temperature pipelines, making it an essential safety material for power electronics and industrial applications.

  • AMA Insulating Paper
    AMA Insulating Paper

    AMA Insulating Paper is a three-layer flexible composite insulating material (aramid paper / polyester film / aramid paper) with an insulation class of Class F (155°C). It combines the high-temperature resistance of aramid paper with the high dielectric strength of polyester film. Widely used in motor slot insulation, turn-to-turn insulation, transformer layer insulation, and other applications, it offers excellent mechanical and electrical properties. It is a cost-effective alternative to NMN insulating paper.

  • Oil Duct Strip
    Oil Duct Strip

    Oil duct strip is an integrated curtain-shaped insulation component thermally laminated by insulating spacers and dotted adhesive insulation paper. It can be cut and wrapped around windings directly. The spacers form stable cooling oil ducts, providing electrical insulation and mechanical support to ensure circulating heat dissipation of insulating oil, replacing traditional loose spacers and corrugated insulation boards.

  • Insulating Pressboard
    Insulating Pressboard

    Insulating pressboard is an electrical-grade paperboard manufactured from high-purity unbleached sulfate wood pulp through a process of sheet forming and high-temperature pressing. The production process demands extremely strict control over water quality and impurities to ensure excellent electrical and mechanical properties.

Transformer Accessories and Auxiliary Materials are crucial components for ensuring stable operation and efficient maintenance of transformers. These products are primarily used in key areas such as transformer installation and fixing, insulation protection, heat dissipation optimization, monitoring and maintenance, and electrical connections. Their core performance is characterized by excellent insulation strength, weather resistance, mechanical support, and environmental adaptability. Product highlights include precise matching design, reliable durability, and a significant improvement in the overall performance and lifespan of the transformer. Selecting appropriate Transformer Accessories and Auxiliary Materials effectively ensures the safety and stability of power system operation and is an indispensable element in transformer applications.

About
Zhejiang Yuanda Fiberglass Mesh Co.,ltd.
Zhejiang Yuanda Fiberglass Mesh Co.,ltd.
Zhejiang Yuanda Fiberglass Mesh Co., Ltd. is China Transformer Insulation Components And Materials Manufacturers and Custom Transformer Insulation Components And Materials Factory, was founded in 2000. It is a technology-oriented manufacturing enterprise focusing on the new materials field, specializing in the research and development, and production of composite reinforcing materials, insulating materials, and related intelligent equipment. Committed to providing professional and reliable products and services to customers worldwide. The company is located in the Yangtze River Delta Economic Circle of China, close to Ningbo Port and Shanghai Port. The unique geographical location has brought convenience to the company's import and export business. The company covers an area of nearly 33,000 square meters and has modern standard workshops.
The three core business segments
1. Composite material fiber bars and fiber bar mesh sheets (GFRP), as well as supporting production equipment.
2. Special interlayer insulating materials for power transformers and motors.
3. For the past 25 years, Zhejiang Yuanda Fiberglass Mesh Co., Ltd. has been deeply engaged in the field of new materials, deepening technological innovation and industrial collaboration, continuously expanding the application scope of its products, and has won wide recognition from customers. In the future, we will be committed to building a leading domestic supplier of composite new materials and injecting continuous impetus into the high-quality development of the industry.
Certificate Of Honor
  • Test Report
  • Test Report
  • Quality Management System Certificate
  • Quality Management System Certification Certificate
  • Safety Production Standardization
  • Business License
  • TEST REPORT
  • SGS
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Transformer Accessories and Auxiliary Materials Industry knowledge

1. Transformer Insulation Components Overview

Transformer insulation components play a crucial role in ensuring the long-term stability and efficiency of transformers. These components are designed to provide excellent electrical insulation, thermal resistance, and mechanical strength, which directly affect transformer performance and lifespan. Proper selection and application of insulation materials can reduce maintenance costs by up to 30% in large-scale power systems.

Zhejiang Yuanda Fiberglass Mesh Co., Ltd. was founded in 2000. It is a technology-oriented manufacturing enterprise specializing in composite reinforcing materials and insulating materials. Located in the Yangtze River Delta Economic Circle, it enjoys proximity to Ningbo and Shanghai ports, facilitating global distribution. The company covers nearly 33,000 square meters with modern workshops to ensure high-quality production.

2. Key Types of Transformer Insulation Materials

(1) Solid Insulation Materials

Solid insulation includes materials such as paper, pressboard, and composite laminates. These materials provide mechanical support and dielectric strength and are widely used in windings, barriers, and bushings. For example, kraft paper has a dielectric strength of 25-30 kV/mm, making it ideal for high-voltage transformers.

(2) Liquid Insulation Materials

Liquid insulation materials, primarily mineral oil and synthetic esters, provide excellent cooling performance along with insulation. Mineral oil, for example, has a breakdown voltage of 30-40 kV and efficiently dissipates heat from transformer cores and windings.

(3) Insulating Accessories

Accessories like gaskets, bushings, and fiberglass supports are essential for assembly and long-term reliability. These materials improve mechanical stability and ensure that electrical components remain securely insulated under various environmental conditions.

3. Performance Comparison of Common Insulation Materials

The following table compares key insulation materials commonly used in transformers, illustrating their electrical and thermal properties:

Material Dielectric Strength (kV/mm) Thermal Class (°C) Applications
Kraft Paper 25-30 105 Windings, barriers
Pressboard 20-25 120 Bushings, supports
Mineral Oil 30-40 90-105 Cooling, insulation
Table 1: Comparison of Common Transformer Insulation Materials

4. Installation and Maintenance Recommendations

  1. Ensure all insulation components are dry and free from contamination before installation.
  2. Regularly inspect bushings, gaskets, and pressboards for signs of aging or damage.
  3. Use compatible oils and solid insulation materials to maintain optimal thermal and dielectric performance.
  4. Document and track maintenance cycles to prevent unexpected transformer failures.

5. Common Questions About Transformer Insulation

Q1: How often should transformer insulation be inspected?

It is recommended to inspect insulation materials at least once a year, or more frequently in harsh environmental conditions.

Q2: Can synthetic insulation replace mineral oil?

Yes, synthetic ester-based insulation can replace mineral oil and offers better biodegradability and fire resistance.

Q3: What is the lifespan of solid insulation materials?

Kraft paper and pressboard can last over 30 years under optimal operating conditions.