1. It is made from impregnated the electrical alkali-free glass fiber cloth after drying., impregnated material is alkyd.
2. Thickness: 0.11,0.12,0.13,0.15,0.17,0.18,0.20,0.25,0.38mm.
3.Width: not less than 1200-1270mm. According to user needs, glass cloth can be straight cutting, obligue cutting (generally along the 45 ℃ angle), the width of bands are15,20,25mm and others. Tolerance of width less than100mm is ± 0.5mm; Tolerance of width more than 100mm is ±1% of the width.
| Nominal thickness and tolerance | ||||||||
| Property | Unit | 0.10±0.0010 | 0.12±0.012 | 0.15±0.015 | 0.18±0.018 | 0.20±0.020 | 0.25±0.025 | |
| Breakdown Voltage when temperature no less than 23±2℃ | ||||||||
| Oil resistance | ||||||||
| The film will not fall off | ||||||||
| Moisture and heat resistance | ||||||||
| Bending resistance | No cracking, the median of bending part breakdown voltage is not less than 50% of the flat part. | |||||||
| thermogravimetric | % | ≤15 | ||||||
| Flexibility | mm | Agreement between supplier and buyer | ||||||
| Elongation | % | ≥12 | ||||||
| lengthwise | N/10mm | ≥65 | ≥85 | ≥105 | ≥111 | ≥118 | ≥131 | |
| crosswise | Width | ≥45 | ≥52 | ≥65 | ≥7.8 | ≥85 | ≥98 | |
| Tensile Strength | 45°向direction | ≥40 | ≥60 | ≥65 | ≥6.5 | ≥70 | ≥80 | |
| Before varnishing | ≥20 | ≥25 | ≥30 | ≥30 | ≥30 | ≥30 | ||
| oblique cutting | ||||||||
| lap joint | After varnishing | ≥20 | ≥20 | ≥20 | ≥30 | ≥30 | ≥30 | |
| Mid | KV | ≥5.0 | ≥6.0 | ≥7.0 | ≥8.0 | ≥9.0 | ≥10.0 | |
| BreakdownVoltage | ||||||||
| 23±2℃ | Min | ≥4.0 | ≥4.5 | ≥6.0 | ≥6.5 | ≥7.0 | ≥8.0 | |
| Under 130±2℃ | Mid | ≥2.0 | ≥3.0 | ≥3.0 | ≥4.0 | ≥4.5 | ≥5.0 | |
| After Elongation | Min | ≥3.0 | ≥4.0 | ≥4.5 | ≥5.0 | ≥6.0 | ||