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trihope@aliyun.com
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/T2634—2008 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 |
||
A 5A Class Transformer Home with a full solution for Transformer Industry
1, A real manufacturer with complete in-house facilities
2, A professional R&D Center, having collaboration with well-know Shandong University
3, A top performance company certificated with International Standards like ISO, CE, SGS and BV etc
4, A better cost-efficient supplier , all key components are international brands like Simens, Schneider and Mitsubishi etc.
5, A reliable business partner, served for ABB, TBEA, PEL, ALFANAR, ZETRAK etc
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.
