Beijing Red Sun Composite Material Co., Ltd.

Electrical Insulating Paperboard, Electrical Material, Insulating Material manufacturer / supplier in China, offering Electrical Insulating Paperboard B, Phenolic Cotton Fabric Laminate 3027, Materials and Molding Product SMC BMC/DMC and so on.

Supplier Homepage Product List Wood and Paper Laminate Electrical Insulating Paperboard B

Electrical Insulating Paperboard B

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Transport Package: Cartoon & Pallet
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Basic Info.

Trademark:Redsun
Origin:China

Product Description

Transformer pressboards are made with pre-compressed grade unbleached sulphate wood pulp, with characteristics of high mechanical, electrical strength, tensile strength, high elongation, low compressibility and proper bending resistance.The excellent properties realized wide-spread application in electrical transmission and distribution equipments like power transformers, shunt Reactors, instrument transformers.etc.
NO. Items Unit Standard Data Test Result
1 Thickness Tolerance                   % ±7.5 2
2 Elongation Lengthwise % ≥3.0 5.75
Widthwise ≥4.0 5.45
3 Tensile Strength           Lengthwise N/m 2 ≥ 100 105.8
Widthwise ≥75 82.5
4 Shrinkage Lengthwise % ≤0.5 0.48
Widthwise ≤0.7 0.6
Thickness  ≤5.0 4.7
5 Electric strength (in Oil),     Kv/mm ≥40 41.5
6 Ash Content   % ≤ 1.0 0.53
7 Oil absorption % ≥11.0 23.52
8 PH value of aqueous extract    - 6-9 7.23
9 Conductivity of aqueous extract    Ms/m ≤5.0 4.8
10 Moisture Content   % ≤6.0 5.8
11 Density              g/cm 3 1.00-1.25 1.08
12 Reference Standard - IEC60641-3-1:1992 -
13 Test Sample Thickness mm - 1.0
 
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Beijing Red Sun Composite Material Co., Ltd.

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