Conder manufactures and supplies a wide range of resin coated papers, ideal for tubes, cylinders and bushings, including those used in oil filled transformers where end products must remain absorbent.
Our pre-impregnated varnished paper is produced from high quality cellulose paper. Coated with phenolic or epoxy resin, it is then dried to a B-stage to ensure flexibility and easy handling. After wrapping or heat forming into the final shape, the material is fully cured to produce a rigid structure with specific electrical, thermal and mechanical properties.
Uniquely, all types of Conder resin coated paper can be supplied up to 3.4m in width or custom cut to a specified width. Product is supplied wound on paper tubes - inside diameter 90mm - outside diameter as required - and protected in sealed bags. Product should be stored in its original packing in a cool, dry place. In such conditions at 20ºC storage life is one year.
Applications
- 60/113 impregnated - Tubes
- 60/84C coated one side - Condenser bushings manufacture
- 60/110 coated one side - Tubes and cylinders for use in HV oil-insulated transformers
- 70/92 coated one side - Bushing manufacture for high current setup transformers
- 70/125 coated one side - Tubes and cylinders for use in HV transformers and end collars
Paper types and specifications
|
|
60/113 impregnated |
60/84C coated one side |
60/110 coated one side |
70/92 coated one side |
70/125 coated one side |
| Paper weight (g/m²) |
60 +/- 3 |
60 +/- 3 |
60 +/-3 |
70 +/-3 |
70 +/-3 |
| Resin weight (g/m²) |
53 |
24 |
50 |
22 |
55 |
| Total coated paper weight (g/m²) |
113 +/- 5 |
84 +/- 5 |
110 +/- 5 |
92 +/- 5 |
125 +/- 5 |
| Average % of resin - ref to total weight |
47% |
28.5% |
45% |
24% |
45% |
| - ref to paper weight |
88% |
40% |
83% |
31.5% |
83% |
| Paper thickness (mm) |
0.09 |
0.09 |
0.09 |
0.10 |
0.10 |
| Thickness of coated paper (mm) |
0.14 |
0.11 |
0.13 |
0.12 |
0.15 |
| Tensile strength of paper (lengthwise) (N/cm) |
50 |
50 |
50 |
90 |
90 |
| Melting point of resin (Kofler test) (degrees C) |
70 - 100 |
70 - 100 |
70-100 |
70-90 |
70-90 |
