1. Insulation class: A (105 °C)
2.Characteristics: Insulation Crepe Paper is one of the most important solid insulation materials used in transformers, it is multi layers of electrical grade crepe and kraft paper for insulating leads in oil filled transformers.Its quality directly influences the life span of the transformer. The BDV is enhanced by up to 80% as compared to base kraft paper. To ensure of the best quality of crepe paper, the base kraft paper is manufactured using longer fibers of pure wood pulp,
3.Usage: It has excellent electrical properties, used for wire, transformer insulation and internections.
4.Standard base paper thickness: 0.05mm, 0.08mm & 0.13mm
| No. | Item | UNIT | ORIGINAL PAPER THICKNESS | |||||||||
| 0.05mm | 0.075mm | 0.08mm | 0.13mm | |||||||||
| 1 | Crepe paper thickness | mm | 0.35±0.05 | 0.38±0.08 | 0.40-0.60 | 0.70-0.90 | ||||||
| 2 | Ash content | less% | 0.7 | 0.7 | 0.8 | 0.8 | ||||||
| 3 | Moisture | less% | 7 | 7 | 8 | 8 | ||||||
| 4 | Ether extract | less% | 0.3 | 0.3 | ||||||||
| 5 | Water extract PH | 6.0-8.0 | 6.0-8.0 | 6.0-8.0 | 6.0-8.0 | |||||||
| 6 | Pollution oil | less% | 0.1 | |||||||||
| 7 | Tensile strength | Longitudinal | N | 30 | 40 | 45 | 50 | |||||
| Transversal | N | 20 | 30 | 35 | 40 | |||||||
| 8 | Flexibility of crepe paper | % | 50 | |||||||||
| 9 | Breakdown voltage | V / layer | ≥950 | ≥1000 | ≥1000 | ≥1000 | ||||||
| 10 | Conductivity | ms/m | ≤9.0 | ≤10 | ||||||||
| 11 | GSM | g/m2 | 60±10% | 110±10% | 110±10% | |||||||