Metalink Electromechanical Co., Ltd.
Metalink is a professional manufacturer of electrical laminated wood and fabricated insulation components, with an annual production capacity exceeding 3,000 tons. The company obtained ISO 9001, ISO 14001, and ISO 45001 management system certifications in 2023.
Equipped with advanced production facilities and innovative manufacturing processes, Metalink specializes in producing transformer insulation parts such as lead supports, pressure rings, and stepped blocks for distribution transformers, as well as 110kV and 220kV applications.
Metalink regards quality as its cornerstone, implementing scientific management and pursuing continuous improvement. Our mission is to provide high-quality products and services to the global transformer industry, striving to build a new quality productive force within the electrical laminated wood sector.
Core Products & Technologies
Electrical Laminated Wood Board
A widely used insulating and supporting material in transformers and instrument transformers. It offers moderate density, high mechanical strength, excellent compatibility with transformer oil, ease of machining and vacuum drying.
- Dielectric constant close to transformer oil
- Long-term use at 105°C in transformer oil
- Reduces transformer weight and costs
- Replaces steel plates, pressboard, epoxy boards
Scarf-Jointed Electrical Laminated Wood Board
To overcome the density variations, internal stress, and voids found in conventional overlapping-joint boards, Metalink employs advanced veneer grinding and lengthening technology.
- 7-degree scarf angle joint for integrated sheets
- Superior mechanical strength
- Enhanced, uniform electrical properties
- Suitable for high-voltage applications
X-Pattern Layup Pressure Ring
Metalink's innovative "X" pattern layup technology aligns wood fibers along the radius direction, formed in a single pressing operation for consistent radial bending strength.
- Exceptionally high and consistent radial strength
- Bending strength >120 MPa for density ≥1.1 g/cm³
- Resistance against electromagnetic forces
- Maximum diameter up to 2400mm
Key Features & Benefits
High Electrical Performance
Dielectric constant closely matches transformer oil for optimal insulation coordination in high voltage applications up to 220kV.
Excellent Mechanical Strength
High strength-to-weight ratio with uniform bending strength across the material for reliable performance in transformers.
Thermal Stability
Long-term operational capability in transformer oil at 105°C, with excellent thermal aging characteristics.
Oil Compatibility
Excellent compatibility with transformer oil, minimal swelling, and stable performance in oil-immersed applications.
Product Specifications & Standards
Our products are manufactured from birch veneers in accordance with IEC 61061 standards.
Standard Board Specifications
| Standard Specification | Standard Thickness |
|---|---|
| 3000 × 2000 (mm) | 10～120 (mm) |
| 3000 × 1500 (mm) | 10～120 (mm) |
| 2400 × 1200 (mm) | 10～120 (mm) |
| 2000 × 1000 (mm) | 10～120 (mm) |
| 2000 × 2000 (mm) | 10～120 (mm) |
| 2200 × 2200 (mm) | 10～120 (mm) |
| 2400 × 2400 (mm) | 10～120 (mm) |
Flatness Tolerance for Boards
| Normal Thickness (mm) | 500mm Straight Edge (mm) | 1000mm Straight Edge (mm) |
|---|---|---|
| ≤15 | 2.0 | 4.0 |
| >15 - ≤25 | 1.5 | 3.0 |
| >25 - ≤60 | 1.0 | 2.0 |
| >60 | 1.0 | 1.0 |
Surface Quality Requirements
| Item | Allowed Range |
|---|---|
| Swelling, Cracking, Dead Knot | Not Allowed |
| Foreign-body Adhering, Insect Hole, Rot | Not Allowed |
| Contamination, Bruising | Not Allowed |
| Impression | Minor instances allowed, not affecting functionality |
| Color-odds and Splash | Allowed within reasonable limits |
| Number of Patches per sq.m. on surface | ≤3 |
Electrical Laminated Wood for Transformer Insulation
Electrical laminated wood is an essential insulating material used in power transformers, distribution transformers, and instrument transformers. As a specialized form of engineered wood, it provides excellent electrical insulation properties combined with high mechanical strength.
Our electrical laminated wood products are specifically engineered for high voltage applications from 10kV to 220kV. The material's dielectric constant closely matches that of transformer oil, ensuring optimal electric field distribution and insulation coordination in oil-immersed transformers.
Manufactured from carefully selected birch veneers and premium insulating resins, Metalink's electrical laminated wood offers superior performance compared to traditional materials like steel plates, epoxy boards, or standard pressboard. The advanced scarf-jointing technology eliminates internal defects, while the X-pattern layup for pressure rings ensures uniform radial strength distribution.
Applications include: transformer lead supports, pressure rings, step blocks, yoke insulation, clamping plates, and various other insulation components in electrical power equipment. The material is fully compatible with vacuum drying processes and maintains dimensional stability throughout the transformer manufacturing process.
Contact Metalink for Electrical Laminated Wood Solutions
With over 3,000 tons annual production capacity and ISO-certified manufacturing processes, Metalink delivers reliable, high-performance electrical laminated wood products for the global transformer industry.
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