1. Resin Coated Paper
Conder manufacture and supply 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 or impregnated 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 set-up 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% |
28.50% |
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 |
2. Electrical Insulation Cylinders
Conder offers a comprehensive range of electrical insulation cylinders to BS EN ISO 9001. Using a range of base papers and laminating resins, a variety of cylinder grades can be manufactured to meet any requirement – such as winding cylinders, support tubes, coil formers, helical end collars and stress ring formers – or any other application requiring lightweight, high strength electrical insulating cylinders.
Cylinders produced from phenolic bonded paper are available in sizes from 50mm to 1880mm diameter and in un-jointed lengths up to 3.1m. Glass and cotton cylinders are also manufactured on Conder’s extensive range of mandrels, but with lower axial lengths.
We can also offer a winding service for your own materials (epoxy glass, fabric, mica) using our vast range of large mandrels. Click on link here to view mandrel listing.
Grades & Applications
Grade E – Temperature/Class A/E
Relatively absorbent phenolic paper laminate, ideal for high voltage work in oil immersed applications due to its good absorbency.
Winding Cylinders HV (in oil), Barrier Cylinders HV / LV (in oil).
Grade EM Temperature/Class A/E
Phenolic paper laminate that is mechanically stronger than Grade E, but still capable of oil impregnation. The most popular grade for winding cylinders; can be cut, drilled and shaped so is ideal for helical or straight transformers end insulation. Suitable for vapour phase drying treatment.
Winding Cylinders HV (in oil). Winding Cylinders LV (in oil or air). End insulators. Support tubes. Oil flow tubes. Lead supports.
Grade M Temperature/Class A/E
Full resin impregnated phenolic paper laminate with very low absorption, but excellent mechanical strength and machinability. Suitable for vapour phase drying treatment.
Winding Cylinders HV (in air). Winding Cylinders LV (in oil or air). Stress ring formers. Tank bodies. Capacitor housings. Insulated handles. Magnet formers. MRI Cylinders.
Grade FRC 28 Temperature/Class A/E
Medium grade cotton phenolic laminate with good machinability.
Low voltage insulation applications.
Grade FRC 32 Temperature/Class A/E
A fine grade cotton phenolic laminate with good mechanical properties and excellent machinability.
Circuit boards. Machine parts. Marine bearings.
Grade FRG 46 Temperature/Class F
Woven glass epoxy resin laminate for class F use (155oC) – axial length limit 1.5m.
Magnet formers. MRI cylinders. Class F high temp cylinders and collars.
See mandrel list for standard sizes and tolerances. No British Standard covers this cylinder size range. Materials offered are similar to those set out in IEC 1212 and the corresponding DIN and NEMA grades.
3. Paper & Print Converting Rollers
Conder has an excellent track record within the paper and paper converting industries, and considerable expertise in the supply of custom made and standard rollers.
Rollers are manufactures as a phenolic or epoxy bonded laminate, in diameters up to 1.8m and with face widths up to 3m (subject to a 10:1 length to diameter ratio). Conder supply both completely made up rollers to customer designs, and raw material for self assembly / machining by clients. In some cases, product can be applied to existing rollers as a size modification or protective coating.
Key Product Features and Properties
Light weight
Low inertia
High strength to weight ratio
Corrosion resistance to mild acids, alkalis and steam
Tensile Strength: 65 MPa
Compressive strength – axially 198 MPa
Compressive strength – radially 150 MPa
Young’s Modulus 103 x 12N/mm2
Specific Gravity 1.3
Coefficient of thermal expansion 0.000025/oC
|
