Zhongtian Group

Chinese Manufacturer

Electrical Insulation Paper Sheet

Electrical paper sheet made of high-purity 100% kraft pulp then finished by high-pressure processing. High purity, high mechanical strength, with both mechanical and electrical properties after oil immersion. It is widely used in oil-immersed transformers and reactors, capacitors, switches, etc. T4 cardboard is more density than the electric board, with larger tightness, smaller shrinkage and good flatness. It is mainly used in equipment such as transformers, capacitors, transformers, etc.(Pie winding parts,like grease block, partitions, cardboard tube, corrugated paper, iron yoke insulation, clip insulation and end insulation winding platen, etc.). Specifications: Thickness: 5/1/2/3/4/5mm   Long * wide: 1000*2000  Single carrier about: 500Kg
Parameter
Standards applied:(GB/T19264.3-2003 & IEC60641-3-1992)
No.    Projects Unit Electrical paperboard T4 paperboard
1mm 2mm 3mm 4mm 5mm ≤1.6 mm >1.6~3.0 mm >3~6.0 mm >1.6~8.0 mm
Values
1 Thickness & tolerance % ±7.5 ±5.0 ±7.5 ±5.0
2 Apparent density g/m2 1.0~1.2 1.0~1.2 1.10~1.25 1.15~1.30 1.20~1.30
3 Moisture content % ≤8 ≤6.0
4 Water extract PH 6.5-8.5
5 Ash content % ≤1.0
6 Oil absorbency % ≥10 ≥9
7 Transformer oil contamination No contamination
8 Tensile strength MD N/10mm ≥110 ≥105
CD ≥80 ≥85 ≥80 ≥80
9 Elongation MD % ≥7.0 ≥3.0
CD ≥9.0 ≥4.0
10 Shrinkage MD % ≤0.7 ≤0.5
CD ≤1.0 ≤0.7
Thickness ≤5.0 ≤5.0
11 Electric strength In air KV/mm ≥10 ≥11
In Oil ≥40 ≥30 ≥25 ≥40 ≥35 ≥35
  Notice: 1)The above table reflects only typical or average data, just for providing practical advice in practical application as far as possible, the data does not assume any responsibility for the use of the product or legal liability. 2)Storage: Tray packaging, about 500Kg / tray. At room temperature, avoid moisture, storage period of 12 months
Note: Due to continuous product improvement, the dimensions provided in this sample are for reference only. If necessary, our company can design and produce according to user requirements. Please contact the company in time.

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