3240 epoxy fiber glass cloth laminate sheet is made of good electric glass cloth,epoxy resin and other resin.
1,Dielectric Strength perpendicular to laminations (in 90±2 ℃ transformer oil, 1 mm in thickness) : min 14.2MV/m
2,Breakdown Voltage parallel to laminations(in 90±2℃ transformer oil) :min 35KV
3,Impact Strength parallel to laminations (Charpy) :min 33KJ/m2| General Properties | |||
| Test Item | Unit | TypicalValue | |
| 3240 | |||
| Flexural Strength perpendicular to laminations | MPa | ||
| A:under normal conditions | ≥ | 340 | |
| E-1/150:150±5℃ | ≥ | _ | |
| Impact Strength parallel to laminations(Charpy) | ≥ | KJ/m2 | 33 |
| Insulation Resist anceafter immersion in water(D-24/23) | ≥ | W | 5.0×108 |
| Dielectric Strength perpendicular to laminations | ≥ | MV/m | 14.2 |
| (in90±2℃transformeroil,1mminthickness) | |||
| Breakdown Voltage parallel to laminations | ≥ | KV | 35 |
| (in90±2℃transformeroil) | |||
| Permittivity(50Hz) | ≤ | — | 5.5 |
| Permittivity(1MHz) | ≤ | — | 5.5 |
| Dissipation Factor(50Hz) | ≤ | — | 0.04 |
| Dissipation Factor(1MHz) | ≤ | — | 0.04 |
| WaterAbsorption(D-24/23,1.6mminthickness) | ≤ | mg | 19 |
| Density | g/cm3 | (1.70-1.90) | |
| Flammability | — | — | |
| Color | — | Natural | |
| Reference Standard | — | GB/T1303.1 | |
| -1998 | |||
