3520 Phenolic Paper Laminated Tube

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3520 Phenolic Paper Laminated Tube

Characteristics and application:

Temperature classification is E. It is made of insulation paper as base and phenolic resin as the adhesive, though heated rolled and pressed. Good dielectric property under dry state. Used as insulating structural parts of electrical apparatus in transformer oil.


NO.ItemUnitNormal Value
1Densityg/cm3≥1.10
2Water Absorption%Refer to standard
3Thermal stability for 24 h℃120
4Flexural strengthN/mm²≥60
5Compressive strengthN/mm²≥60
6（50HZ）Dissipation factor–≤0.03
7Voltage resistance perpendicular to the Layer direction at 90±2℃ transformer oil
For 5 min		mm
Wall thickness		≥MV/m≥8.5
≥≥8.0
≥≥7.0
≥≥6.5
≥≥6.0
8Voltage resistance parallel to the layer direction at 90±2℃ transformer oil for 5 minKV25
9Surface voltage resistance after being humidified in the air at room temperature for 1 minKV12

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