Insulation Paper Pressboard
Color: Natural
0.3 Conventional size 1150*800mm
0.5 Conventional size 1150*800mm and 1M * 2M
0.8 above with mesh, conventional size 1m*2m
Description
Type: Electrical Insulation Pressboard
Color: Natural
0.3 Conventional size 1150*800mm
0.5 Conventional size 1150*800mm and 1M * 2M
0.8 above with mesh, conventional size 1m*2m
Insulation pressboard is made from 100% superior sulfate insulating wood pulp. High chemical purity, excellent enlonation, good Mechanical and dielectric Strength.
| Item name | unit | Specification | ||||||
| B type | ||||||||
| B.0.1 | B.2.1 | |||||||
| D | G | D | G | B.3.1 | ||||
| Thickness tolerance | ≤1.6mm | % | ±7.5 | ±7.5 | ±7.5 | |||
| ＞1.6mm | ±5.0 | ±5.0 | ±5.0 | |||||
| Tightness | ≤1.6mm | g/cm3 | 1.0～1.2 | 1.2～1.3 | 1.0～1.2 | 1.2～1.3 | 1.00～1.20 | |
| ＞1.6－3.0mm | 1.10～1.25 | |||||||
| ＞3.0－6.0mm | 1.15～1.30 | |||||||
| ＞6.0－8.0mm | 1.20～1.30 | |||||||
| Tensile strength | MD | ≤1.6mm | N/mm2 | 80 | 110 | 80 | 110 | 100 |
| ＞6.0－8.0mm | 80 | 120 | 80 | 110 | 105 | |||
| ＞3.0－6.0mm | 80 | 130 | 80 | 110 | 110 | |||
| ＞6.0－8.0mm | — | — | — | — | 110 | |||
| TD | ≤1.6mm | 55 | 85 | 55 | 80 | 75 | ||
| ＞6.0－8.0mm | 55 | 90 | 55 | 85 | 80 | |||
| ＞3.0－6.0mm | 55 | 80 | 50 | 80 | 85 | |||
| ＞6.0－8.0mm | ≥ | — | — | — | — | 85 | ||
| Elongation rate | MD | ％ | 6 | 7 | 6 | 7 | 3 | |
| TD | ≥ | 7 | 9 | 8 | 9 | 4 | ||
| Shrinkage rate | MD | ％ | 0.7 | 0.7 | 0.5 | |||
| TD | 1 | 1 | 0.7 | |||||
| Thick direction | ≤ | 5 | 5 | 5 | ||||
| Oil absorption rate | ≤1.6mm | ％ | 15 | 15 | 10 | 11 | ||
| ＞1.6－3.0mm | 9 | |||||||
| ＞3.0－8.0mm | ≥ | 7 | ||||||
Advantage:
Insulation pressboard has good mechanical strength, high electrical resistance, large tightness, small shrinkage, good flatness.
Application:
Insulation pressboard is used for oil-immersed transformers, capacitors, reactors and switches.
Notice:
1. During slitting and use, edge gaps and cracks should be prevented to avoid tearing during operation and to avoid surface scratches, oil and dust pollution.
2. Store in an environment below 40℃, keep clean and dry, away from heat sources, and avoid direct sunlight.
3. The storage period is one year. If it exceeds the storage period, it can still be used if it passes the test according to the technical requirements.
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