Home > Laminated Densified Wood

Laminated Densified Wood

Laminated Densified Wood

Laminated Densified Wood

 

Electrical laminated wood is widely used as insulating and supporting material in transformers and current transformers.
It is good to adapted specific gravity, high mechanical properties, easy vacuum drying, easy mechanical processing etc..
The dielectric constant of laminated wood is close to transformer oil, so it makes a good performance for insulating.
And it can be used in transformer oil of 105℃ for long time.
The Laminated Wood can be made to upper/lower pressure pieces, cable supporting beams, limbs, spacer blocks in oil-immersed transformers, and clamps in instrument transformers. It replaced steel plates, insulating paper sheets, epoxy paper sheets, epoxide woven glass fabric lamination in these fields, and cutted down the material expenses and weight of transformers.
Electrical Laminated Wood Technical Data Sheet:

Electrical laminated wood is widely used as insulating and supporting material in transformers and current transformers.

It is good to adapted specific gravity, high mechanical properties, easy vacuum drying, easy mechanical processing etc..

The dielectric constant of laminated wood is close to transformer oil, so it makes a good performance for insulating.

And it can be used in transformer oil of 105℃ for long time.

The Laminated Wood can be made to upper/lower pressure pieces, cable supporting beams, limbs, spacer blocks in oil-immersed transformers, and clamps in instrument transformers. It replaced steel plates, insulating paper sheets, epoxy paper sheets, epoxide woven glass fabric lamination in these fields, and cutted down the material expenses and weight of transformers.

Electrical Laminated Wood Technical Data Sheet:

 

Capability 

Unit 

Max or Min 

Model

Veneers technical data

Rings technical data

C2B

C3B

T2B

T4B

Density

g/cm3

Range

0.9-1.1

1.1-1.2

1.0-1.1

1.2-1.3

Moisture

%

Max

6

6

8

8

Vertical  layer  direction

Mpa

Min

55

65

100

140

flexural strength

Vertical layer direction appearance flexural modulus of elasticity

Gpa

Min

6

8

10

13

Vertical layer direction

%

Max

4

3

5

3

Compressive C Crev

Min

70

70

70

70

Impact strength

KJ/m2

Min

10

13

25

35

Cutting strength of adhering layer’s binding property

Mpa

Min

7

8

7

9

Vertical layer direction electric strength

KV/mm

Min

10

11

10

10

Parallel layer direction puncture voltage

KV

Min

50

50

50

50

Shrinkage direction after dried

 

 

 

 

 

 

Direction A

%

 

0.3

0.3

 

 

Direction B

%

Max

0.3

0.3

 

 

Thickness

%

 

3

3

3

3

Oil absorption

%

Min

10

8

10

5

Contamination for liquid dielectric

_

Max

0.1

0.1

0.1

0.1

Note:

B stands for birch in the electrical insulating laminated compressed-wood veneer model.Birch electrical  insulating laminated compressed-wood veneer technique target is same to the beech.