Insulating Tube
Phenolic Laminated Paper Tube
1, Structure (composition): insulation winding paper, phenolic resin;
2, Performance (summary): the dielectric property is good in dry state;
3, Application (purpose): suitable for dry environment and transformer oil as insulation structure parts of electrical equipment;
4, Minimum inner diameter ɸ10; maximum outer diameter ɸ800; minimum wall thickness: 2mm;
No . | Indicator | Unit | Index value | |||
Inner diameter (5~25mm) | Inner diameter (Over 25mm ) | |||||
1 | Density | g/cm3 | ≥1.03 | ≥1.10 | ||
2 | Water absorption rate | % | ≤the value of Table 5 | |||
3 | Thermal stability (24h) | °C | 120 | 120 | ||
4 | Bending strength (Mpa) | N/mm2 | ≥50.0 | ≥60.0 | ||
5 | Compression strength (Mpa) | N/mm2 | ≥50.0 | ≥60.0 | ||
6 | Dielectric loss factor 50Hz | — | ≤0.03 | ≤0.03 | ||
7 | Vertical layer withstand voltage (90°C±2°C / 5min in transformer oil) | Wall thickness | 1.5~2.5mm | MV/m | ≥8.5 | ≥8.5 |
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 | ||||
8 | Parallel layer withstand voltage (20 °C ±5 °C / 5min in transformer oil) | kV | 20 | 25 | ||
9 | Surface voltage withstand (after exposure to moisture, withstand voltage 1min in normal air) | kV | 12 | 12 | ||
Table 5 | ||||||
Wall t hickness/mm | 1.5 | 3 | 5 | 7 | 10 | 13 |
Water absorption (%) | 10 | 8 | 6 | 5 | 4 | 3 |
Phenolic Laminated Tube
No. | Indicator | Unit | Index value | |
1 | Density | g/cm3 | 1.04~1.20 | |
2 | Water absorption | % | ≤4 | |
3 | Thermal stability (24h) | °C | ≥130 | |
4 | Bending strength | Mpa | ≥80 | |
5 | Compression strength | Mpa | ≥45 | |
6 | Surface resistivity | Normal state | Ω | ≥1.0 x 108 |
Be exposed to moisture | ≥1.0 x 107 | |||
7 | Volume resistivity | Normal state | Ω.m | ≥1.0 x 107 |
Be exposed to moisture | ≥1.0 x 105 | |||
8 | Vertical laminar electrical strength (50Hz in 20°C±5°C transformer oil) | MV/m | ≥3.5 | |
1, Structure (composition): scouring desizing cotton cloth, phenolic resin;
2, Performance (summary): high longitudinal tensile strength and low water absorption;
3, Application (purpose): suitable for insulation structure parts with high mechanical strength requirements and bearing a variety of mechanical processing;
4, Minimum inner diameter ɸ10; maximum outer diameter ɸ800; minimum wall thickness: 2mm;
Epoxy Phenolic Glass Fiber Cloth Laminated Tube
1, Structure (composition): alkali-free glass fiber cloth for electrical engineering, epoxy phenolic resin;
2, Performance (summary): high mechanical strength and good electrical stability in high humidity environment;
3, Application (purpose): used as the partition board of the electrical parts of the motor under the action of high temperature arc, and can also be used in the place with higher temperature;
4, Minimum inner diameter ɸ10; maximum outer diameter ɸ800; minimum wall thickness: 2mm;
No. | Indicator | Unit | Index value | |||
1 | Density | g/cm3 | ≥1.40 | |||
2 | Bending strength | Mpa | ≥160 | |||
3 | Compression strength | Mpa | ≥50.0 | |||
4 | Shearing strength | Mpa | ≥12 | |||
5 | Volume resistivity | Normal state | Ω.m | ≥1.0 x 1010 | ||
After 24 hours of immersion | ≥1.0 x 108 | |||||
6 | Insulation resistance | Normal state | Ω | ≥1.0 x 1010 | ||
After 24 hours of immersion | ≥1.0 x 107 | |||||
7 | Dielectric loss factor 50Hz | ≤0.030 | ||||
8 | Vertical layer withstand voltage (90°C±2°C / 5min in transformer oil) | Wall thickness | kV | Inner diameter 6~25mm | Inner diameter ≥ 26mm | |
1.5mm | 7 | 12 | ||||
2.0mm | 10 | 14 | ||||
2.5mm | 13 | 16 | ||||
3.0mm | 15 | 18 | ||||
9 | Parallel layer withstand voltage (20°C ±5°C / 5min in transformer oil) | kV | 25 | |||
10 | Surface withstand voltage (5min in normal air 24 hours after exposure to moisture) | kV | 12 | |||
