Electrical laminated wood is widely used as insulation and support material in transformers and instrument transformers. It has the advantages of moderate specific gravity, high mechanical strength, easy vacuum drying, and easy machining. Its dielectric constant is close to that of transformer oil, and its insulation coordination is reasonable. It can be used in transformer oil at 105°C for a long time. Electrical laminated wood has been widely used in oil-immersed transformers to manufacture upper and lower pressure plates, lead brackets, iron yoke pads and other parts, and is used to make clips in transformers. It replaces steel plates, insulating cardboard, epoxy cardboard, etc. The application of epoxy glass cloth board in these aspects reduces the self-weight and material cost of the transformer. Electrical laminated board is a veneer made of high-quality birch wood, which is cooked, peeled and dried. After being coated with special insulating glue, it is made by high temperature and high pressure.
