1. DDP is produced by insulating paper with diamond-shape epoxy resin dotted in both sides. The epoxy resin used in D.D.P.contains a kind of incubative hardener material, it is a dry and crisp material at normal temperature(below 35°C).
2. CharactersThis product has good dielectric properties and excellent mechanical properties after being heat-solidification.
3. ApplicationIt can be as interturn insulation material for coils of oil immersed transformer and interlayer insulation of distribution transformers.
4. SpecificationThickness: 0.08mm, 0.13mm, 0.18mm, 0.20mm, 0.25mm
| Specified Properties | Units | Standard |
| Thickness Tolerance | Mm | 0.075, 0.08, 0.13, 0.18, 0.20,0.25, 0.30, 0.35 |
| Density | g/mm^3 | 0.95 – 1.15 |
| Tensile strength Min | N/mm^2 | MD 70 – 90 |
| CMD 40 – 50 | ||
| Elongation Min | % | MD 2.0 – 3.0 |
| CMD 7.0 – 9.0 | ||
| Breakdown volume Min | KV/mm | In air 11-12 |
| In oil 45-50 | ||
| Oil Absorption Min | % | 8 |
| Moisture Content | % | 4.0-8.0 |
| Resin’s Content Min | % | 7 , 6 , 5 , 4 , 3.5 |
| Ash Content Max | % | 1 |
| Adhesion Strength Min | kPa | 450 |
| Dp | 1000 |