Item

Unit

Value

G11 Epoxy glass cloth laminate

Density

g/cm³

1.7-1.9

Flexural strength perpendicular to lamination under

 normal conditions ≥       

MPa

340

Bonding strength (≥10mm in thickness) ≥

N

6500

Impact strength parallel to lamination (charpy) ≥

kJ/m²

37

Voltage endurance perpendicular to lamination in

 transformer oil 1 minute at 90±2^oC,

 Thickness1.0mm  ≥

 kV/mm

 14.2

Voltage endurance parallel to lamination under

 normal conditions ≥

kV

35

Insulation resistance after impregnated in water ≥

MΩ

5×10⁴

Dissipation factor ≤  

    50Hz:                               

    1MHz:

^-

0.04

0.04

Relative dielectric constant ≤

    50Hz:                                

    1MHz:

^-

5.5

5.5

Water absorption rate ≤

%

0.25