Electrical pressboard is made of 100% sulphate wood pulp with high purity and processed at high pressure.
Electrical pressboard is made of 100% sulphate wood pulp with high purity and processed at high pressure.
Electrical pressboard has high mechanical strength and good compatibility with transformer oil. It is used in oil-immersed transformers, reactors, capacitors and switches, etc
Common specification: thickness: 0.5/1/2/3/4/5mm
Regular length * width: 1000*2000
Other length * width: 3200*1600/3200*2100/3200*4200/2260*1470/2200*1130
| Product standard：GB/T19264.3-2003 IEC60641-3-1992 | ||||||||||||
| Number | Index name | Unit | Electrical pressboard | High density board | ||||||||
| 1mm | 2mm | 3mm | 4mm | 5mm | ≤1.6mm | >1.6～3.0mm | >3～6.0mm | >1.6～8.0mm | ||||
| Index | ||||||||||||
| 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 | Contamination for transformer oil | No pollution | ||||||||||
| 8 | Tensile strength | MD（Longitudinal ） | N/10mm | ≥110 | ≥105 | |||||||
| CD（transverse） | ≥80 | ≥85 | ≥80 | ≥80 | ||||||||
| 9 | Elongation | MD（Longitudinal） | % | ≥7.0 | ≥3.0 | |||||||
| CD（transverse） | ≥9.0 | ≥4.0 | ||||||||||
| 10 |
Shrinkage |
MD（Longitudinal） | % | ≤0.7 | ≤0.5 | |||||||
| CD（transverse） | ≤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 | ||||||
If you are attractive to our products, please send us a message and we will contact you as soon as we receive it. Email: info@ztelecgroup.com Whatsapp: +8615716749170
Time:2020-12-11 Click:172
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