Industrial Electrical Engg Company

Established since 1921

Grade G10 / Nema FR-4

Properties and application, Temperature Index: 170°C

These sheets posses as extra of anti-fire besides the properties EP-III posses.

These sheets are made of electrical alkali-free glass cloth Impregnated with epoxy resin by processing under pressure and heat. These sheets, with high mechanical properties and a number of at medium humidity and good dielectric stability at high humidity are applied to the mechanical lines, electron lines and electrical appliance lines.

These epoxy laminated glass cloth sheets is produced by combining layers of epoxy resin – impregnated and dried electro-alkali free glass cloth in a hydraulic press under heat and pressure, and processing.

 

This product having excellent electro insulation properties, mechanical properties at high temperature and high binding force, can be used as spacer land support of big coil in 300, 600 kv generator and other high voltage electric machine and devices, switch gear application etc.

 

Properties

Units

Value

Water absorption
MAX

For size 1.0mm

2.0mm

3.0mm

5.0mm

6.0mm

10mm

27mm

% mg

 

17

19

21

24

30

33

65

Flexural Strength

MPa

>340
Impact Strength

KJ/m²

Min 37
Voltage endurance vertical to the lamination

For size 1.0mm

2.0mm

3.0mm

   

min 14.0

min 12.0

min 11.0

Voltage endurance parallel to the lamination

Kv

>40
Insulation resistance after immersion in water

M ohms

5 x 10
1 MHz max. after lose tangent 1 Mhz, after immersion in water

Max. 0.04
Relative dielectric constant at 1 MHz after immersion in water

Max. 5.5
Dielectric strength perpendicular to laminations (in 90.2 ºC Transformer Oil MV/m >14.2)

 

 

 


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