Tubes
Round Rolled Phenolic Paper Tube
Product Name:Round Rolled Phenolic Paper Tube
Product Classification: Tubes
Laminated Tube |
|||||||
|
Units |
Grade |
|||||
3520 Phenolic Paper Laminated Tube |
3526 Phenolic Cloth Laminated Tube |
3640 Epoxy Glass Cloth Laminated Tube |
|||||
Inside diameter |
Inside diameter |
||||||
Density |
g/cm3
|
≥1.03 |
≥1.10 |
1.04-1.20 |
≥1.40 |
||
Water absorption |
% |
Wall thickness 3mm≤8 |
≤4 |
— |
|||
Thermostability(24h) |
℃ |
120 |
120 |
130 |
— |
||
Flexural strength |
Mpa |
≥50.0 |
≥60.0 |
≥80 |
≥160 |
||
Compressive strength |
Mpa |
≥50.0 |
≥60.0 |
≥45 |
≥50 |
||
Shear strength |
Mpa |
— |
— |
— |
≥12 |
||
Surface resistance |
Under normal condition |
WΩ |
— |
— |
≥1.0×108
|
— |
|
In case of humidity |
— |
— |
≥1.0×107
|
— |
|||
Volume resistivity |
Under normal condition |
Ω·m |
— |
— |
≥1.0×107
|
≥1.0×1010
|
|
In case of humidity |
— |
— |
≥1.0×105
|
— |
|||
Impregnated in water |
— |
— |
— |
≥1.0×108
|
|||
Insulation resistance |
Under normal condition |
Ω |
— |
— |
— |
≥1.0×1010
|
|
Impregnated in water |
— |
— |
— |
≥1.0×107
|
|||
Dissipation factor |
50Hz |
— |
≤0.03 |
≤0.03 |
— |
≤0.03 |
|
Dielectric strength perpendicular to laminations(withstand voltage)(in 90±2℃/5min transformer oil) |
MV/m |
Wall thickness |
≥8.5 |
≥35 in20℃transformer oil |
Wall thickness(mm) |
Units |
|
≥8.0 |
1.5 |
(kv) |
|||||
≥7.0 |
2.0 |
||||||
≥6.5 |
2.5 |
||||||
≥6.0 |
3.0 |
||||||
Dielectric break downparallel to laminations(in 90±2℃/5min transformer oil) |
kV |
— |
≥25 |
— |
≥25 |
||
Surface withstand voltage(in case of humidity, under normal condition air, withstand voltage 1min) |
kV |
— |
≥12 |
— |
≥12 |
||