Epoxy Glass Cloth Laminate  

Properties

Unit

Grade 

3240 

F880 

F881

F882

F883

F884 

F885 

F889 

Flexural strength perpendicular to laminations

A: under normal conditions ≥ 

MPa 

340 

340 

340 

340 

340 

340

340 

280 

Impact Strength parallel laminations Charpy ≥ 

kG/m

33

33

33

33

33

33

33

40

Insulation resistance immersion in water (D-24/23) ≥  

Ω

5,0*10⁵ 

5,0*10⁵ 

5,0*10⁵ 

5,0*10⁵ 

5,0*10⁵ 

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Surrface resistance A: under normal conditions

Ω

1,0*10^3-5

1,0*10^6-9

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Dielectric strength perpendicular to laminations (In 90+2⁰C transformer oil. 1 mm in thickness) ≥

MV/m

14 2

14 2

14 2

14 2

14 2

14 2

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---------

Breakdown voltage parallel to laminations (In 90+2⁰C transformer oil) ≥

kV

35

40

40

40

40

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--------

--------

Permittivity (48-62Hz) <

--------

5.5

5.5

5.5

5.5

5.5

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---------

---------

Permittivity (1MHz) <

--------

5.5

5.5

5.5

5.5

5.5