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| Customization: | Available |
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| Application: | Insulators, Electrical Winding Insulation, Winding Wire Coating Insulation, Electrical Base, Shell, Motor, Insulating Varnish, Switch Baseplate, High Voltage |
| Color: | Brown, Light Green, Natural |
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| No. | Item | Units | Value |
| 1 | Applicable Standards | - | JB/T 3172-1999 |
| 2 | Density | g/cm³ | 1.03~1.20 |
| 3 | Bending strength perpendicular to laminations | MPa | 50 |
| 4 | Impact strength | MPa | 50 |
| 5 | Bonding strength | MPa | - |
| 6 | Voltage endurance parallel to lamination (in oil 90±2°C) | kV | 20 |
| 7 | Voltage endurance perpendicular to lamination (in oil 90 ±2°C) |
kV/mm | 6.0 |
| 8 | Insulation resistance Impregnated in water |
MΩ | - |
| 9 | Water absorption, wall thick 5mm | % | 6.0 |
| 10 | Temperature index | OC | 120 |
| Properties | Unit | Grade | ||||
| Phenolic Paper Laminate Tube | ||||||
| Inside diameter(5-25mm) | Inside diameter (>25mm) | |||||
| Density | g/cm3 | ≥1.03 | ≥1.20 | |||
| Water absorption rate | % | Wall thickness 3mm ≤8 | ||||
| Thermostability(24h) | °C | 120 | 120 | |||
| Flexural strength | MPa | ≥50.0 | ≥60.0 | |||
| Compressive strength | MPa | ≥50.0 | ≥60.0 | |||
| Shear strength | MPa | - | - | |||
| Dissipation factor | 50Hz | ≤0.03 | ≤0.03 | |||
| Dielectric strength perpendicular to laminations(withstand voltage) | kV/mm | Wall thickness | 1.5-2.5mm | ≥8.5 | ≥8.5 | |
| (in 90±2°C/5min transformer oil) | >2.5-3.5mm | ≥8.0 | ≥8.0 | |||
| >3.5-4.5mm | ≥7.0 | ≥7.0 | ||||
| >4.5-6mm | ≥6.5 | ≥6.5 | ||||
| >6-9mm | ≥6.0 | ≥6.0 | ||||
| Dielectric breakdown parallel to laminations (in 90±2°C/5min transformer oil) | kV | 20 | 25 | |||
| Surface withstand voltage (in case of humidity, under normal condition air withstand voltage 1 min) | kV | 12 | 12 | |||
| NO. | TEST ITEMS | UNIT | REQUIREMENT | TEST RESULT | TEST METHOD |
| 1 | DENSITY | g/cm3 | ≥1.10 | 1.14 | GB/T3172-1999 |
| 2 | WATER ABSORPTION | % | ≤8 | 8 | |
| 3 | THERMAL STABILITY (120 degree ,/24 H ) |
- | No crack, no muster |
No crack, no muster |
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| 4 | VERTICAL ELECTRICAL STRENGTH (in oil 90°C ,five minutes) |
- | 8.0MV/m | 8.0MV/m pass | |
| 5 | DIELECTRIC LOSS FACTOR | - | ≤3x10-2 | 2.1x10-2 | |
| Note: the sample is prepared by the client. | |||||
| The following blanks | |||||





