STBPI can supply different types of Press Papers and Press Boards as per client request. Data sheet of our common grades can be viewed here. Depending on customer requirements we can offer the right product to meet your application. These products are widely used in Electrical Industries especially in production of Motors and Transformers.
Transformer Paper, type 3055
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Technical Data Sheet |
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3055 Press Paper; Size: 0.2/0.5mm x 1135 mm x Roll |
|
No. |
Item |
Unit |
Eligibility criteria
Value |
|
1 |
Thickness tolerance (Max) |
% |
±10 |
|
2 |
Density |
g/cm3 |
1.00 - 1.20 |
|
3 |
Tensile strength |
Vertical |
N/mm2 |
≥80 |
|
Horizontal |
≥40 |
|
4 |
Elongation |
Vertical |
% |
≥1.5 |
|
Horizontal |
≥7.0 |
|
5 |
Shrinkage |
Vertical |
% |
≤1.0 |
|
Horizontal |
≤1.5 |
|
Thickness |
≤7.5 |
|
6 |
Moisture Content |
% |
≤8.0 |
|
7 |
Wave Conductivity of Aqueous Extract |
ms/m |
≤8.0 |
|
8 |
PH Value of Aqueous Extract Wave |
- |
6.0-9.0 |
|
9 |
Oil Absorption |
% |
≥10.0 |
|
10 |
Ash Content |
% |
≤1.0 |
|
11 |
Electric Strength |
KV/mm |
≥55 |
|
Standard |
The material meets the standard of IEC60641-3-2:2007-11; P4.1A |
Transformer Board (1.5mm) , STBPI-PSP-A
|
No. |
Testing Item |
Unit |
Requirements |
Testing Result |
Testing Method |
|
1 |
Thickness (Maximum deviation of all measured value) |
% |
-7.5 ~ +7.5 |
+2.0
-0 |
According to the testing methods of GB/T 19264.3-2003 |
|
2 |
Surface Density (tightness) |
g/cm³ |
1.00 ~ 1.20 |
1.13 |
|
3 |
Tensile Strength |
Vertical |
Mpa |
≥100 |
154 |
|
Horizontal |
≥75 |
99 |
|
4 |
Elongation |
Vertical |
% |
≥3.0 |
3.5 |
|
Horizontal |
≥4.0 |
4.0 |
|
5 |
Compression C |
% |
≤10.0 |
6.5 |
|
6 |
Restore Part of Compression Crev |
% |
≥45 |
61 |
|
7 |
Shrinkage |
Vertical |
% |
≤0.5 |
0.2 |
|
Horizontal |
≤0.7 |
0.3 |
|
Thickness |
≤5.0 |
2.0 |
|
8 |
Adhesion between Layers
(Visual Test) |
- |
Stripping should be significant phenomenon of rough and hairy on one or more layers. |
Stripping is significant phenomenon of rough and hairy on one or more layers. |
|
9 |
Moisture Content |
% |
≤6.0 |
3.6 |
|
10 |
Ash Content |
% |
≤1.0 |
0.4 |
|
11 |
Wave Conductivity of Aqueous Extract |
mS/m |
≤5.0 |
1.5 |
|
12 |
pH Value of Aqueous Extract Wave |
- |
6.0~9.0 |
6.8 |
|
13 |
Oil Absorption |
% |
≥11.0 |
14.5 |
|
14 |
Electric Strength |
Air |
kV/mm |
≥12 |
15 |
|
Oil |
≥40 |
41 |
|
15 |
The Pollution of the Liquid Dielectric (Change Value of the Dielectric loss Factor) |
- |
- |
+6.0×10-5 |
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Remark: The dielectric loss factor of blank oil is 1.0×10-4 in Item 15. |
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