High Density Strata Wood for Oil Transformer

Electrical laminated wood is widely used as insulation and support material in transformers and 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.

Products Details

Product DisplayProduct Features

Name

Electrical insulating laminated wood

Test item

Unit

Test method

Apparent Density

g/m3

IEC 61061-2:2001

Moisture content

%

oil adsorption

%

Thickness variation before and after oil absorption

%

Compressive strength

normal

Vertical to the layers

Mpa

Refer to

ISO604: 1993

parallel to the layers

90

Vertical to the layers

parallel to the layers

Flexural strength

normalcy

MD

Mpa

IEC 61061-2:2001

CD

90

MD

Mpa

CD

Flexural modulus

normalcy

MD

Mpa

CD

90

MD

CD

Compressibility perpendicular to the laminations

C

%

C rev

Impact strength

parallel to the laminations

Vertical to the layers

kj/m2

parallel to the layers

Contamination of liquid dielectric

 

Electric strength

perpendicular to the laminations

MV/m

Breakdown voltage

parallel to the laminations

KV

Shrinkage after drying

A direction

%

direction

thickness

Product DescriptionIt 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.Product SpecificationMaximum size of plate (length × width × thickness): 4000×3000×120(mm) Common specifications and dimensions of plates (length × width × thickness): 3000×1500×(10—120) (mm), 2400×2000×(10—120) (mm)

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