Brand: YILONG
Materials: veneer sheets of high-quality wood such as birch, colored wood, ash and etc
Density: 0.9~1.3 T/m³
Thickness: 8mm-150mm
Size: 2000mm*1000mm ,2500mm*1250mm,3000mm*1500mm,4000mm*2000mm
Temperature Index: 105℃
Packaging: Pallet, Wooden Box
Description
Electrical laminated wood is a high-performance insulation and structural material widely used in oil-filled transformers. It offers an ideal combination of moderate density, excellent mechanical strength, and superior compatibility with transformer oil. With a dielectric constant close to that of transformer oil, it can operate reliably in temperatures up to 105 °C for extended periods. Electrical laminated wood maintains structural integrity under mechanical stress and strong electric fields, making it a reliable alternative to steel plates, insulating paperboards, epoxy paperboards, and epoxy glass cloth boards. Its use helps reduce transformer weight and material costs while ensuring safety and durability.
Features
High Mechanical Strength: Provides excellent support under external forces.
Good Dielectric Properties: Dielectric constant closely matches transformer oil, ensuring stable insulation.
Thermal Stability: Suitable for long-term operation in transformer oil up to 105 °C.
Oil Compatibility: Resistant to degradation when immersed in transformer oil.
Lightweight & Cost-Effective: Can replace heavier metal or composite parts, reducing transformer weight and costs.
Easy Processing: Can be cut, shaped, and machined according to transformer design requirements.
Applications
Used as an insulating material in electrical transformers, motors, and generators.
Serves as structural support in electrical panels and cabinets.
Manufactured into upper and lower pressure pieces in transformers.
Used as cable-supporting beams.
Forms limbs and spacer blocks in oil-immersed transformers.
Used as clamps in instrument transformers.
Replaces steel plates, insulating paper sheets, epoxy paper sheets, and epoxide woven glass fabric laminates.
Helps reduce costs and overall weight of transformers while maintaining excellent insulation and mechanical strength.
Technical Data Sheet
| Electrical Laminated Wood Board | |||||||||||
| No. | Property | Unit | Veneers technique target | Rings technique target | |||||||
| P3B | C1B | C2B | C3B | C4B | T2B | T4B | |||||
| 1 | Density | g/cm3 | 1.1-1.2 | 0.7-0.9 | 0.9-1.1 | 1.1-1.2 | 1.2-1.3 | 0.9-1.1 | 1.2-1.3 | ||
| 2 | Moisture | % | ≤6 | ≤6 | ≤6 | ≤6 | ≤6 | ≤6 | ≤6 | ||
| 3 | Vertical Layer Direction Flexural Strength | Direction A | Mpa | ≥150 | ≥45 | ≥55 | ≥65 | ≥80 | Diameter>1000mm | ≥100 | ≥140 |
| 4 | Direction B | Diameter≤1000mm | ≥90 | ≥125 | |||||||
| 5 | Vertical Layer Direction Flexural Modulus of elasticity | Direction A | Gpa | ≥14 | ≥4.5 | ≥6 | ≥80 | ≥9 | ≥10 | ≥13 | |
| Direction B | - | ||||||||||
| 6 | Compressibility (Below 20Mpa) | C | % | ≤3 | ≤5 | ≤4 | ≤3 | ≤2.5 | ≤5 | ≤4 | |
| Crev | ≥70 | ≥70 | ≥70 | ≥70 | ≥70 | ≥70 | ≥70 | ||||
| 7 | Impact Strength (Side Test) | Direction A | KJ/m2 | ≥35 | ≥6 | ≥10 | ≥13 | ≥15 | ≥25 | ≥35 | |
| Direction B | - | ||||||||||
| 11 | Shear Strength | Mpa | ≥8 | ≥5 | ≥7 | ≥8 | ≥9 | ≥7 | ≥9 | ||
| 12 | Vertical Layer Direction Eletric Strength | KV/mm | ≥11 | ≥9 | ≥10 | ≥11 | ≥12 | ≥10 | ≥10 | ||
| 13 | Parallel Layer Direction Puncture Voltage | KV | ≥50 | ≥50 | ≥50 | ≥50 | ≥50 | ≥50 | ≥50 | ||
| 14 | Shrinkage after drying | Direction A | % | ≤0.2 | ≤0.3 | ≤0.3 | ≤0.3 | ≤0.3 | Girth | ≤0.5 | ≤0.5 ≤3 |
| Direction B | ≤0.5 | ≤0.3 | ≤0.3 | ≤0.3 | ≤0.3 | Thickness | ≤3 | ||||
| Thickness | ≤3 | ≤3 | ≤3 | ≤3 | ≤3 | ||||||
| 15 | Oil Absorption | % | ≥8 | ≥20 | ≥15 | ≥8 | ≥5 | ≥15 | ≥5 | ||
| 16 | Contaimination to Liqid Dielectric | - | ≤0.1 | ≤0.1 | ≤0.1 | ≤0.1 | ≤0.1 | ≤0.1 | ≤0.1 | ||
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