Description
Electrical heat-resisant Grade Creped Insulation Paper is wet lapped the 100% sulfate wood pulp after nitriding,then wrinkled paper.After nitriding,the thermal stability temperature of the fiber can reaches 130??.The electrical insulating paper is flexible,with high elongation and highoil absorption properties.It’s widely used as turn insulation,CTC and layer insulation in transformers,reactors and mutual inductors.
Storage
The product should be stored in dry,clean and well-ventilated warehouse,thefire,heat sources and direct sunshine should be avoided.The shelf life isrecommended tobe one year.The longer storage period must be approved bylabtest before using.
| No. | Property | Unit | Requirements | |||
| 1? | Nominal thickness | mm | 0.25? | 0.35? | 0.46? | 0.65? |
| 2? | Tolerance of thickness | mm | ??0.05 | ??0.05 | ??0.05 | ??0.10 |
| 3? | Grammage | g/m2 | 140??10 | 100??20 | 130??25 | 180~190 |
| 4? | Compactness | g/cm3 | 0.54? | 0.25? | 0.52? | 0.32? |
| 5? | Elongation at rupture | % | 65~100 | |||
| 6? | Tensile strength MD | Nm/g | ??30 | |||
| 7? | Moisture | % | ??8 | |||
| 8? | Ash content | % | ??0.6 | |||
| 9? | Conductivity of water extract | mS/m | ??4.0 | |||
| 10? | PH value of water extract | һ | 6.0~8.0 | |||
| 11? | Nitrogen content | % | ??1.0 | |||
| 12? | Electrical strength (Normal) | kV/mm | ??4.0 | |||
