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Hanyao durable Transformer Pressboard Strips are made from pre-compressed press boards. The cutting machine cuts a whole piece of press board into strips of different sizes. Hanyao insists on using the finest boards as raw materials because we have to assure that the properties are perfectly suitable to the customer’s needs.High purity,excellent mechanical strength and good oil absorbtion are three main factors that make the components adaptable to the electrical field condition in the transformer. Normally we process these materials into rectangular strips or rectangular strips with rounded edges.When shipping, we will seal these materials with plastic film to prevent moisture.
| No. | Item | Thickness（mm） | Requirement | Test methods | ||
| ＞ | ≤ | |||||
| 1 | Thickness deviation % | - | 1.6 | ±7.5 | IEC60641-3-1:B3.1B | |
| 1.6 | 3 | ±5.0 | ||||
| 3 | - | ±4.0 | ||||
| 2 | Surface density gm/cc | - | 1.6 | 0.95-1.15 | ||
| 1.6 | 3 | 1.05-1.20 | ||||
| 3 | - | 1.10-1.25 | ||||
| 3 | Oil absorbtion %（min.） | - | 1.6 | 11 | ||
| 1.6 | 3 | 9 | ||||
| 3 | 6 | 7 | ||||
| 6 | - | 6 | ||||
| 4 | Compresibility %(max.) | - | 1.6 | 11 | ||
| 1.6 | 3 | 7.5 | ||||
| 3 | 6 | 5 | ||||
| 6 | - | 4.5 | ||||
| 5 | Reversible part of Compressibility %(min.) | - | 1.6 | 45 | ||
| 1.6 | 3 | 50 | ||||
| 3 | 6 | 50 | ||||
| 6 | - | 55 | ||||
| 6 | Tensile strength Mpa(min.) | MD | - | 1.6 | 80 | |
| 1.6 | 3 | 85 | ||||
| 3 | - | 90 | ||||
| TD | - | 1.6 | 45 | |||
| 1.6 | 3 | 50 | ||||
| 3 | - | 55 | ||||
| 7 | Breakdown strength Kv/mm(min.) | in oil | - | 1.6 | 40 | |
| 1.6 | 3 | 38 | ||||
| 3 | - | 35 | ||||
| in air | All thickness | 12 | ||||
| 8 | Conductivity of aqueous extract ms/m（max.） | - | 1.6 | 5 | ||
| 1.6 | 3 | 6 | ||||
| 3 | 6 | 8 | ||||
| 6 | - | 10 | ||||
| 9 | Shringkage %（max.） | MD | 0.6 | |||
| TD | 0.8 | |||||
| Vertical | 5 | |||||
| 10 | Elongation %（min.） | MD | 3.5 | |||
| TD | 4.5 | |||||
| 11 | Water content %（max.） | 6 | ||||
| 12 | Ash content %（max.） | 0.6 | ||||
| 13 | PH of aqueous extract | 6.0~9.0 | ||||
| 14 | Polymerization（min.) | 1150 | ||||
Disclaimer: The performance figures, parameters, and features described are typical values under specific test conditions and may vary in actual applications. They do not constitute a warranty or guarantee of performance under all conditions. Users are responsible for verifying the suitability of the product for their intended application.
1.The Transformer Pressboard Strips is a class A insulation material,which can withstand temperature upto 105℃.
2.It has High purity and mechanical strength.
3.It is made of 100% sulfate pulp and in natural color.
4. It is suitable for use of power and distribution transformers.
Address
No. 35, Dongfu Road, Industrial Area, Suzhou City, Jiangsu Province, China
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For inquiries about Electrical Insulation Materials On Oil Type Transformers, Electrical Insulation Materials On Dry Type Transformers, Electrical Insulation Materials On Motors or price list, please leave your email to Hanyao and we will be in touch within 24 hours.
