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Help CenterNEMA CE Standard Diamond Dotted Insulation Paper DDP
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Specifications
Specifications1.Class E
2.Thickness:.0.08mm, 0.13mm,0.18mm,0.25mm,0.40mm,0.50mm
3.Colour:Red ,Brown
10 years export experi
DDP DIAMOND DOTTED PAPER for transformer
diamond dotted paper
DDP for transformer
Features and Applications:
-Good dielectric properties and mechanical propeties after being heat-solidification.
-As interturn insulation for coils of transformers interlayer insulation of distribution transformers.
-It is to be used in oil-immersed transformers for the insulation between of coils aDiamond dotted paper(DDP) is made of insulating paper with diamond-shape epoxy resin dotted on both sides. The epoxy used in D.D.P contains a kind of incubative hardener material. It is a dry and crisp material at normal temperature.
This product has good dielectric properties and good mechanical properties after heat solidificationnd between layers of oil immerged power distribution transformers.
DDP | ||||||||
Item |
Index. |
Unit |
Value |
|||||
1 |
Thickness and tolerance |
mm |
0.08±0.005/0.13±0.007 |
|||||
2 |
Density |
g/cm3 |
0.85~1.10 |
|||||
3 |
Single thickness |
μm |
10~15 |
|||||
4 |
Moisture content |
% |
4.0~8.0 |
|||||
5 |
Oil-absorption |
% |
≥20 |
|||||
6 |
Bond strength |
at room temp. |
kPa |
≥650 |
||||
100°C±2°C |
≥450 |
|||||||
7 |
Pollution for transformer oil |
- |
no pollution(Δtanø<0.001) |
|||||
8 |
Tensile Strength |
lengthwise |
N/10mm |
≥60 |
≥110 |
≥160 |
≥180 |
≥230 |
crosswise |
≥30 |
≥50 |
≥70 |
≥80 |
≥100 |
|||
9 |
Tearing Strength |
lengthwise |
Mn |
≥450 |
≥900 |
≥1350 |
≥1500 |
≥2000 |
crosswise |
≥500 |
≥1000 |
≥1500 |
≥1700 |
≥2300 |
|||
10 |
Breakdown voltage |
in air |
KV |
≥0.88 |
≥1.37 |
≥2.00 |
≥2.10 |
≥2.25 |
in oil |
≥4.40 |
≥7.00 |
≥9.00 |
≥9.80 |
≥11.50 |
|||
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