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
Standards applied:(GB/T19264.3-2003 & IEC60641-3-1992)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.
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
|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|
|1||Thickness & tolerance||%||±7.5||±5.0||±7.5||±5.0|
|4||Water extract PH||—||6.5-8.5|
|7||Transformer oil contamination||No contamination|
|11||Electric strength||In air||KV/mm||≥10||≥11|