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 | |||
