3247 High Strength Glass Fibre


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Product Features

3247 board is a plate-like laminate product made of F-grade resin as the matrix material, coupling agent-treated alkali-free glass fiber cloth as the reinforcing material, and hot-pressed. It has high mechanical retention strength under the F-grade temperature condition. It has excellent dielectric properties in humid environments. The products have passed the inspection of the Quality Supervision and Inspection Center of Mechanical Industry Electrical Materials Products.

Product Usage

3247 high-strength glass fiber cloth laminate is suitable for insulating structural parts in large generator sets, motors, and electrical equipment under F-level conditions, and can be used in humid environments and transformer oil.

Product specifications and physical properties

1. Nominal thickness and tolerance: 0.25 ± 0.07mm; 55.0, 60.0 ± 2.5mm; 70.0, 80.0 ± 2.8mm; 0.5 ~ 50.0mm thickness of each specification are implemented in accordance with GB/T1303.1-1998.

2. Nominal area: 2000±020mm×1000±020mm.

3. Main technical indicators (execute Q/20520497-1 002-2004):

Serial number

Test items

unit

Claim

Test results

1

density

g/cm3

1.7~1.9

1.79

2

Water absorption

mg

≤25

13.2

 

3

Vertical layer bending strength (longitudinal)

normal

MPa

≥400

449

155℃±2℃

≥250

264

4

Vertical layered simply supported beam without notch impact resistance (longitudinal)

KJ/m2

≥150

199

5

Tensile strength (longitudinal)

MPa

≥300

371

6

Bonding strength

N

≥5600

7733

7

Vertical layer direction electric strength (90℃±2℃ in oil)

MV/m

≥11.8

17.9

8

Parallel layer direction breakdown voltage (90℃±2℃ in oil)

KV

≥35

50

9

Dielectric loss factor (50Hz)

≤0.04

0.034

10

Relative permittivity (50Hz)

≤5.5

4.8

 

11

 

Volume resistivity

normal

 

Ω•m

≥1.0×1010

1.4×1012

155℃±2℃

≥1.0×108

1.3×1011

After 24h soaking in water

≥5.0×108

4.9×1011

12

Surface resistivity

Ω

≥1.0×1011

6.3×1013

13

Comparative Tracking Index

V

CTI150-<0.1

 

  Sales Manager: Chang Qing 13881068449

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