Electrical Laminated Wood Board for Transformers - China Manufacturers, Suppliers, Factory

Our Electrical Laminated Wood Board (also known in the industry as transformer laminated wood or wood-based insulation) is a high-density, premium insulation material engineered specifically for high-voltage oil-immersed transformers and instrument transformers.

Manufactured under strict quality control from selected beech/birch veneers and thermosetting resins, it serves as the ultimate cost-effective alternative to brand-name insulation woods (like Permali or Dehonit) without compromising on mechanical or electrical performance.

Key Features

• Perfect Dielectric Alignment with Transformer Oil: With a dielectric constant very close to transformer oil, it ensures reasonable insulation coordination, significantly reducing the risk of electrical breakdown.

• 105°C Continuous Operation: Formulated to withstand long-term immersion in hot transformer oil up to 105°C (Class A insulation) without degradation or contaminating the oil.

• Superior Vacuum Drying & Oil Absorption: The natural capillary structure allows for rapid moisture elimination during vacuum processing and excellent oil impregnation.

• High Mechanical & Structural Strength: Offers exceptional compressive and flexural strength, making it ideal for heavy-duty support components.

• Precision CNC Machining: Excellent machinability allows us to deliver complex, burr-free finished parts according to your engineering drawings.

FAQ: 

Q1: Can your electrical laminated wood replace Permali or Dehonit boards?

A: Yes. Our electrical laminated wood boards are engineered to match or exceed the mechanical and electrical standards of major European brands. It serves as a highly reliable, cost-effective alternative for global transformer manufacturers.

Q2: Do you support small batch orders or prototyping (sampling)?

A: Absolutely. We understand that transformer projects require strict validation. We support low MOQ (Minimum Order Quantity) and provide custom sample prototyping based on your specific drawings before mass production.

Q3: How does this material behave in transformer oil?

A: It is fully compatible with mineral transformer oil. It will not leach impurities into the oil, and its dielectric constant is perfectly matched with the oil, preventing localized electrical stress.