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m zhao (tianjin ) international trading co., ltd
m zhao (tianjin ) international trading co., ltd  

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Electrical laminated woods for making oils transformer 

Place of Origin: Tianjin, China (Mainland) 
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Electrical laminated wood is widely used as insulating and supporting material in transformers and instrument transformers. It has many virtues such a

Introduction:
Electrical laminated wood is widely used as insulating and supporting material in transformers and instrument transformers. It has many virtues such as moderate specific gravity, high mechanical properties, easy vacuum drying, easy mechanical processing etc. The dielectric constant of this material is close to transformer oil, so it makes a reasonable insulation match. And it can be used in transformer oil of 105°C for long time.

Specification  

Capability

Unit

Model


Technique target

Rings technique target


P3B

C1B

C2B

C3B

C4B

T2B

T3B


Appearance 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


Moisture

%

≤6

≤6

≤6

≤6

≤6

≤6

≤6


Vertical layer direction flexural strength

Direction

A

MPa

≥150

≥45

≥55

≥65

≥80

Diameter>1000mm

≥100

≥140


Direction

 B

Diameter≤1000mm

≥90

≥125


Vertical layer direction modulus of elasticity

Direction A

GPa

≥14

≥4.5

≥6

≥8

≥9

≥10

≥13


B



Compressibility(Below 20MPa)

C

%

≤3

≤5

≤4

≤3

≤2.5

≤5

≤4


Crev

≥70

≥70

≥70

≥70

≥70

≥70

≥70


Impact strength

(side test)

A

KJ/m2

≥35

≥6

≥10

≥13

≥15

≥25

≥35


B



Shear strength

MPa

≥8

≥5

≥7

≥8

≥9

≥7

≥9


Vertical layer direction

Electric trength

In (90±2)℃ Oil

KV/mm

≥11

≥9

≥10

≥11

≥12

≥10

≥10


Parallel layer direction

Electric trength

In (90±2)℃ Oil

KV

≥50

≥50

≥50

≥50

≥50

≥50

≥50


Shrinkage after dried

Direction A

%

≤0.2

 

≤0.5

 

≤3

≤0.3

 

≤0.3

 

≤3

≤0.3

 

≤0.3

 

≤3

≤0.3

 

≤0.3

 

≤3

≤0.3

 

≤0.3

 

≤3

Girth

≤0.5

≤0.5


Direction A



≤3

≤3


Thickness


Oil absorption

%

≥8

≥20

≥15

≥8

≥5

≥10

≥5


Contamination to liquid dielectric

(Δtanδ)

≤0.1

≤0.1

≤0.1

≤0.1

≤0.1

≤0.1

















Standard length

: 2000mm X 1000mm & 2400mm X 1200mm& 3000mmx1500mm ,&3000x2400mm&2000mmx2000mm

Thickness: 10.0mm – 120mm

•Laminated Compressed Wood Sheets for electrical purpose: Confirming to IEC & DIN standards in

Low, Medium & High density

•Components can be supplied as per customer drawing & specifications. 

 


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Company Info

m zhao (tianjin ) international trading co., ltd [China (Mainland)]


Business Type:Manufacturer, Trading Company, Agent
City: Tianjin
Province/State: Tianjin
Country/Region: China (Mainland)

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