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Product name:Electrical insulation tramsformer use epoxy resin fiberglass winding tube ends
Material:Epoxy resin fiberglass winding tube ends
Color:Yellow
Usage:Insulating structural parts of electrical apparatus in transformer
Electrical insulation tramsformer use epoxy resin fiberglass winding tube ends

The glass cloth is impregnated with different resins (epoxy / diphenyl ether / polyesterimide / silicone / bismaleimide) and partially curing, then formed by hot roll baking and curing in a roll coater. Glass cloth laminated pipe has good dielectric properties and machinability. It can be used as insulation structural components for electrical equipment. Can be made into a dry-type transformer coil insulation tube and transformer insulation end.
Heat resistance is different according tot he raw material (B/F/H)GB/T 5132.1-2009 IEC61212-1:2006

3641 Epoxy Laminated End Ring
No.
Project
Unit
Index
3640/3641
355
356
3652
364
1
Density
g/m³
1.7-1.8
2
Vertical layer bending strength  (normality)
MPa
≥70
≥80
≥80
≥80
≥80
3
Axial compression strength
MPa
≥60
≥70
≥70
≥70
≥70
4
Parallel layer break down voltage(in 90℃ transformer oil)
Kv
≥35
≥25
≥25
≥25
≥25
5
Vertical layer electrical strength(in 90℃ transformer oil)
Kv/mm
≥6-14
≥6-14
≥6-14
≥6-14
≥6-14
6
dielectric loss factor (50Hz)
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
7
Water absorbing
%
≤1
≤1
≤1
≤1
≤1
8
Temperature index
130/155
180
180
180
180
Test data is different according to the tube thickness

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