Electrical Insulation Transformer Pressboard IEC 60641-3-1
Electrical pressboard paper / electrical insulation cardboard，Suitable for all types of electrical insulation scenarios.
Categories：
electrical insulation board
WhatsApp：+8615290922111
Email：info@hnzfe.com
Product Description
Pressboard is made of 100% imported unbleached sulphate wood pulp
Electrical Pressboard Paper, as an indispensable dielectric material for oil-immersed transformer insulation, is produced from 100% unbleached cellulose taken from long fiber coniferous wood. This is structured into a fibrous tissue without additional adhesive and then pressed. Its excellent chemical purity, mechanical strength and optimum oil impregnability make the product be widely used in electrical transmission and distribution equipment like Power Transformers, Shunt Reactors and Instrument Transformers etc.
Our Advantages
1. 100% sulfate pulp
2. High Flexible and Soft
3. Low shrinkage and compatibility
4. High purity and mechanical strength
5. Good compatibility with liquid dielectrics
6. Further processing is ensured since the pressboard can be punched, folded, cut, and formed without difficulty.
The products meet the requirements of GB/T 19264.3 and IEC 60641-3-1 standards.
Applications
To use as insulations material in Power and Distribution Transformers. It is also the base material for components like corrugated boards, cylinders, rings, and mouldable parts.
Because of the strong hydrogen bond of the fiber, it ensures excellent insulation performance, aging resistance and mechanical properties.
The transformer pressboard paper sold by JINGWEI is made of high-purity cellulose. The raw materials are specially treated in multiple processes to achieve maximum purity without chemical additives, impurities, or inferior fillers. The high purity allows these electrical insulation paper sheets to meet the most stringent insulation requirements.
At the same time, these 100% wood pulp electrical insulation boards also excel in mechanical strength and oil penetration properties, making them excellent insulating materials for transformers, especially oil-immersed transformers and other equipment. By the way, these transformer boards can greatly reduce electrical losses if used in power transmission lines.
In addition to transformer pressboard paper, we offer a wide range of insulating materials covering oil-type, dry-type, and generators. You can find electrical insulating paper sheets suitable for most voltages and currents with us, enjoying a convenient one-stop international transaction.
We have rich experience in the bulk production and sales of transformer pressed paper boards. We use advanced technology and equipment and skilled operators to ensure the long-term stability of product quality. In addition, we provide flexible custom options to achieve the individual needs of customers from different markets.
If you are looking for a suitable transformer board supplier or manufacturer, choosing JINGWEI must be the best choice. We are the source factory for many brands, offering competitive prices and quality. Contact us now!
Technical Data :
| No | Property | unit | Specification | Standard |
|---|---|---|---|---|
| 1 | Thickness Tolerance | % | ≤1.6mm | ±7.5 |
| ＞1.6 - 5.0 | ±5.0 | |||
| 2 | Apparent density | g/cm³ | 1.0 - 1.25 | |
| ≤1.6mm | ||||
| 3 | Tensile Strength (Machine direction) | N/mm² | ＞1.6 - 3.0mm | ≥80 |
| ＞3.0 - 5.0mm | ≥85 | |||
| ≤1.6mm | ≥90 | |||
| Tensile Strength (Cross machine direction) | N/mm² | ＞1.6 - 3.0mm | ≥45 | |
| ＞3.0 - 5.0mm | ≥50 | |||
| 4 | Elongation (Machine direction) | % | ≥3.0 | |
| Elongation (Cross machine direction) | % | ≥4.0 | ||
| 5 | Shrinkage (Machine direction) | % | ≤0.7 | |
| Shrinkage (Cross machine direction) | % | ≤1.0 | ||
| Shrinkage (Thickness direction) | % | ≤6.0 | ||
| 6 | Ash content | % | ≤0.7 | |
| 7 | Oil absorption rate | % | ≤1.6mm | ≥13.0 |
| ＞1.6 - 3.0mm | ≥11.0 | |||
| ＞3.0 - 5.0mm | ≥9.0 | |||
| 8 | Electric conductivity water extract | mS/m | ≤1.6mm | ≤5.0 |
| ＞1.6 - 3.0mm | ≤6.0 | |||
| ＞3.0 - 5.0mm | ≤8.0 | |||
| 9 | PH water extract | - | 6.0 - 9.0 | |
| 10 | Voltage resistant strength (In oil) | Kv/mm | ≤1.6mm | ≥40 |
| ＞1.6 - 5.0mm | ≤35 | |||
| 11 | Moisture content | % | ≤6.0 | |
| 12 | Tolerance of Cutting Size | mm | ±10mm | |
| 13 | Skewness tolerance | mm | ±10mm | |
| When tearing, one or several layers bursting with obviously rough signs & coming - out fibers |
Application :
Such highly economical grade of rigid electrical insulation is manufactured in accordance with a number of international standards (including IEC 60641-3-1: 1992 Type B.3.1 and DIN 7733 Type PSP 3052) and is a 105ºC rated (Class A) electrical insulation material. It is widely used in electrical transmission and distribution equipment, and typical applications for this rigid insulation material include:Phase barriers ,Step blocks,Washers,Discs,Blocks,Rings,Clamping platers,Coil supports,Collars,Radial spaces and key strips
All of these can be provided by AG fabricated to your specific dimensional requirements.
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Solution
Since its establishment, Jingwei has always been committed to the field of electrical insulation materials. With excellent quality, innovative technology and professional services, it provides efficient and reliable insulation solutions to global customers, and has won the trust and praise of global customers.
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Since its establishment, Jingwei has always been committed to the field of electrical insulation materials. With excellent quality, innovative technology and professional services, it provides efficient and reliable insulation solutions to global customers, and has won the trust and praise of global customers.
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