Short Description:

Electrical laminated wood is widely used as insulation and supporting materials in transformers and instrument transformers. It has many virtues such as moderate specific gravity, high mechanical properties, easy vacuum drying, no bad inner-reaction with transformer oil, 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 the transformer oil of 105℃ for a long time.
People usually use this material to make 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 cut down the material expenses and weight of transformers.


Product Detail

What is Trihope

FAQ

Products details:

Insulation board is manufactured in accordance to IEC standards, in a single sheet and in a thickness of up to 8 mm. The thickness range can be extended up to 150 mm by Transformer laminations.

The raw materials of laminated wood sheets are high-quality birch and willow timbers. After boiling, rotary cutting, drying, these timbers are made to veneers. At last, the veneers will be glued with special insulating gluewater and processed under high temperature and pressure.

Veneer Face Flatness(unit mm)

 

Normal Thickness

Distance of any point on the upper surface of the veneer that deviates from the light weight straight ruler

Veneer length 500

Veneer length 1000

15

2.0

4.0

15..25

1.5

3.0

25..60

1.0

2.0

60

1.0

1.5

Appearance Quality

Item

Allowed Range

Swelling

 

 

Not Allowed

Cracking

Dead Knot

Foreign-body Adhering

Insect Hole

Rot

Contamination

Bruising

A few allowed, not effect in usage

Impression

Color-odds and splash

Patches per sq.m on surface

3

GB Test Item--- Before delivery Factory inspection

Test Item

 Unit

Standard

Test Method

Vertical Bending Strength

Toward A

Mpa

65

GB/T26342008 Test Standard

Toward B

65

Vertical Bending modulus of elasticity

Toward A

Gpa

8

Toward B

8

Compressibility (under 20MPa)

Toward C

%

3

Crev

70

Impact strength (side test)

Toward A

KJ/

13

Toward B

13

Interlaminar shear strength

Mpa

8

Vertical electric strength (90 ℃ + 2 )

KV/mm

11

Vertical electric strength (90 ℃ + 2 )

KV

50

Performance density

g/cm³

>1.1~1.2

water content

%

6

Shrinkage after drying

Toward A

%

0.3

Toward B

0.3

Toward thickness

3

Oil absorption

%

8


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    1, A real manufacturer with complete in-house facilities

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    2, A professional R&D Center, having collaboration with well-know Shandong University 

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    3, A top performance company certificated with International Standards like ISO, CE, SGS and BV etc

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    4, A better cost-efficient supplier , all key components are international brands like Simens, Schneider and Mitsubishi etc.

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    5, A reliable business partner, served for ABB, TBEA, PEL, ALFANAR, ZETRAK etc in past 17 years 

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    Q1: What size densified wood can you offer?

    Answer: We can support the lamination board start from thickness 8mm–70mm,  The length and width could customized to your size.

    Q2: How to guarantee the quality ?

    Answer: The quality is approved by national certificate ,several senior inspection personnel ,the brand material supplier ensure the safety and reliability of everything from storage to finished the goods .

    Q1:Can you provide the turn-key service for a new transformer factory ?  

    Answer: Yes, we have the rich experience for establish new transformer factory.

    And had succeeded in help Pakistan and Bangladesh customer to build transformer factory. 


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