DDP Insulation Eelectric Paper for Transformer
| US$3.00 | 500 kg (MOQ) |
Xuchang Chengrui Insulation Material Co., Ltd.
Henan, China
Last Login Date:
Jul 29, 2025
Main Products:
Electrical Insulation Paper, Polyester Film, Fiberglass Sleeving, Insulation Material, Nmn Nomex Paper, Pressboard Presspaper, Insulation Paper, Insulation Board, Insulation Sheet, Fiberglass Tape
Product Description
Company Info
Basic Info.
Product Description
Diamond dotted insulation paper is made of electrical insulating paper coated with heat curable epoxy resin, the epoxy adhesive is applied to both sides of the paper in a diamond pattern consisting of 9.5mm x 9.5mm diamonds with 15.9mm center spacing It is a kind of material with inertia, dry and no conglutination at normal temperature (below 30 degree C). The Diamond Dotted Paper will make the electric conductor forever felt up as a hard unit under the high temperature by its internal latency substance. when the temperature is rising up to 90 degree C. The Diamond Paper begins one-off thaw and then one-off solidification .When to keep the temperature at 90 degree C for 90 minutes, the epoxy resin would paste on neighboring cable and paper safely. The felt intensity is as high as to 70psi at 100 degree C (The value at least is equal to 0.275Mpa, America standard)
Type: Insulation Paper
Thickness: 0.08mm, 0.13mm, 0.15mm, 0.17mm, 0.20mm, 0.25mm
Width: 960mm, 1000mm
Color: Natural
Insulation Class: Class B (130ºC)
1. Kraft paper, 100% sulfate pulp
2. High purity and mechanical strength
3. Baked enamel coating: Epoxy resin, rhombic, one or both sides
4. Good compatibility with liquid dielectric after the baked enamel coating has hardened.
5. Care should be taken that the layers to be baked remain closely pressed against each other during baking time
It is to be used in oil-immersed transformers for the insulation between coils. On the insulation layer, there is a layer dotted epoxy resin that will be changed with high-temperature change that is to be called as felt.
| Item | Index | Unit | Standard | |
| 1 | Thickness &tolerance | mm | 0.08±0.005 0.13±0.007 0.18±0.010 0.20±0.010 0.25±0.010 | |
| 2 | Density | g/cm3 | 0.85~1.10 | |
| 3 | Adhensive thickness of single side | μm | 10~15 | |
| 4 | Water content | % | 4.0~8.0 | |
| 5 | Oil absorbency | % | ≥20 | |
| 6 | Adhensive strength | Ordinary state | kPa | ≥650 |
| 100ºC±2ºC | ≥400 | |||
| 7 | Pollution for transformer oil | - | Pollution-free(tan∮<0.001) | |
| N0 | Index | Unit | Standard | |||||
| 1 | Thickness &tolerance | mm | 0.08±0.005 0.13±0.007 0.18±0.010 0.20±0.010 0.25±0.010 | |||||
| 2 | Density | g/cm3 | 0.85~1.10 | |||||
| 3 | Adhensive thickness of single side | μm | 10~15 | |||||
| 4 | Water content | % | 4.0~8.0 | |||||
| 5 | Oil absorbency | % | ≥20 | |||||
| 6 | Adhensive strength | Ordinary state | kPa | ≥650 | ||||
| 100ºC±2ºC | ≥400 | |||||||
| 7 | Pollution for transformer oil | - | Pollution-free(tan∮<0.001) | |||||
| 8 | Tensile strength | MD | N/10mm width | ≥60 | ≥110 | ≥160 | ≥180 | ≥230 |
| CD | ≥30 | ≥50 | ≥70 | ≥80 | ≥100 | |||
| 9 | Tear Index | MD | Mn | ≥450 | ≥900 | ≥1350 | ≥1500 | ≥2000 |
| CD | ≥500 | ≥1000 | ≥1500 | ≥1700 | ≥2300 | |||
| 10 | Breakdown | 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 | |||
