3240 Epoxy fiberglass laminated sheet
Properties | Unit | Grade | |||
3240 | Jan-40 | Mar-40 | |||
Flexural strength perpendicular to | ≥ | MPa | 340 | 320 | 320 |
laminations | |||||
A: under normal | |||||
conditions | |||||
E-1/150 :150±5 °c | — | — | — | ||
Impact Strength | ≥ | kJ/m2 | 33 | 30 | 30 |
parallel to laminations | |||||
(Charpy) | |||||
Insulation Resistance | ≥ | Ω | 5.0×108 | 1.0×108 | 1.0×108 |
After immersion in water (D-24/23) | |||||
Dielectric strength | ≥ | kV/mm | 14.2 | 14.2 | 8 |
perpendicular to laminations (in 90±2°c | (thickness 3mm) | ||||
transformer oil,1 mm in thickness) | |||||
Breakdown voltage parallel to laminations | ≥ | kV | 35 | 30 | 30 |
(in 90±2°c transformer oil) | |||||
Permittivity | ≤ | — | 5.5 | — | — |
(48-62Hz) | |||||
Permittivity (1MHz) | ≤ | — | 5.5 | — | — |
Dissipation factor (48-62Hz) | ≤ | — | 0.04 | — | — |
Dissipation factor(1Mz) | ≤ | — | 0.04 | — | — |
Water absorption | ≤ | mg | 19 | 19 | 19 |
(D-24/23,1.6mm in thickness) | |||||
Density | g/cm3 | (1.70-1.90) | (1.70-1.90) | (1.70-1.90) | |
Flammability | Class | — | — | — | |
Color | — | Natural | Natural | Natural | |
Reference standard | Q/TXXFR002-2009 |