China OEM Factory for Epoxy Glass Cloth Laminated Sheets - 3240 Epoxy Phenolic Glass Cloth Base Rigid Laminated Sheet – D&F manufacturers and Exporter

OEM Factory for Epoxy Glass Cloth Laminated Sheets - 3240 Epoxy Phenolic Glass Cloth Base Rigid Laminated Sheet – D&F

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We normally believe that one's character decides products' quality, the details decides products' high-quality ,while using the REALISTIC,EFFICIENT AND INNOVATIVE staff spirit for class F DMD for dry type transformer, Electrical Insulation Paper For Motor, IGBT laminated busbar, "Making the Products of High Quality" is the eternal goal of our company. We make unremitting efforts to realize the goal of "We Will Always Keep in Pace with the Time".

OEM Factory for Epoxy Glass Cloth Laminated Sheets - 3240 Epoxy Phenolic Glass Cloth Base Rigid Laminated Sheet – D&F Detail:

Technical Requirements

1.1 Appearance: the surface of sheet shall be flat and smooth, free of air bubbles, wrinkles or cracks and reasonably free of other small imperfections such as scratches, dents, etc. The edge of sheet shall be tidy and be free of delaminations and cracks. The color shall be substantially uniform, but a few stains are permissible.

1.2 Dimension and allowed tolerance

1.2.1 Width and Length of Sheets

Width & Length (mm)	Tolerance (mm)
＞970～3000	+/-25

1.2.2 The nominal thickness & tolerance

Nominal thickness (mm)

Tolerance (mm)

Nominal thickness (mm)

Tolerance (mm)

0.5

0.6

0.8

1.0

1.2

1.6

2.0

2.5

3.0

4.0

5.0

6.0

8.0

+/-0.12

+/-0.13

+/-0.16

+/-0.18

+/-0.20

+/-0.24

+/-0.28

+/-0.33

+/-0.37

+/-0.45

+/-0.52

+/-0.60

+/-0.72

+/-0.82

+/-0.94

+/-1.02

+/-1.12

+/-1.30

+/-1.50

+/-1.70

+/-1.95

+/-2.10

+/-2.30

+/-2.45

+/-2.50

+/-2.80

Remarks: For the non-nominal thickness not listed in this table, the deviation shall be the same as that of the next greater thickness.

1.3 Bending Deflection

Thickness (mm)

Bending Deflection

1000mm（Ruler length） (mm)

500mm（Ruler length）(mm)

3.0～6.0

＞6.0～8.0

＞8.0

≤10

≤8

≤6

≤2.5

≤2.0

≤1.5

1.4 Mechanical processing: the sheets shall be free of cracks, delaminations and scraps when such machining as sawing, drilling, lathing and milling is applied

1.5 The physical, mechanical and electrcal properties

No.	Properties	Unit	Standard value	Typical value
1	Density	g/cm³	1.7～1.95	1.94
2	Water absoprtion (2mm sheet)	mg	≤20	5.7
3	Flexural strength, perpendicular to laminations	MPa	≥340	417
4	Impact strength (Charpy, notch)	kJ/m²	≥30	50
5	Dielectric dissipation factor 50Hz	—	≤5.5	4.48
6	Dielectric constant 50Hz	—	≤0.04	0.02
7	Insulation resistance ( After 24h in water)	Ω	≥5.0 x10⁸	4.9 x10⁹
8	Dielectric strength, perpendicular to laminationsin transformer oil at 90℃+/-2℃, 1mm sheet	kV/mm	≥14.2	16.8
9	Breakdown Voltage, parallel to laminationsin transformer oil at 90℃+/-2℃	kV	≥35	38

Packing, Transportation and Storage

The sheets shall be stored in a place where temperature is no higher than 40℃, and be placed horizontally on a bedplate with a height of 50mm or above. Keep away from fire, heat (heating apparatus) and direct sunshine. The storage life of sheets is 18 months from the date of leaving factory. If the storage duration is over 18 months, the product also could be used after being tested to be qualified.

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3240 (4)

Remarks and Precautions for Application

A high speed and small cutting depth g shall be applied when machining because of sheets’ weak thermal conductivity.

Machining and cutting this product will release much dust and smoke. Suitable measures should be taken to ensure dust levels are within acceptable limits during operations. Local exhaust ventilation and using the dust/particle masks are advised.

The sheets are subject to moisture after being machined, a coating of insulating vanish is recommended.

3240 machining parts(10)
CNC machining insulation parts(1)

Production Equipment

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The Package For Laminated Sheets

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Having a positive and progressive attitude to customer's fascination, our organization constantly improves our solution high-quality to fulfill the requirements of shoppers and further focuses on safety, reliability, environmental prerequisites, and innovation of OEM Factory for Epoxy Glass Cloth Laminated Sheets - 3240 Epoxy Phenolic Glass Cloth Base Rigid Laminated Sheet – D&F , The product will supply to all over the world, such as: Vancouver, Kenya, Florence, We always insist on the management tenet of "Quality is first, Technology is basis, Honesty and Innovation".We are able to develop new products continuously to a higher level to satisfy different needs of customers.

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