Phenol-glued insulation material does not release styrene
At the CWIEME 2015, Röchling will present platforms for oil-filled high-voltage transformers made of the insulation material Trafoboard. The material measures 3,150x3,150mm, permitting the construction of even larger and thus higher-capacity transformers.
After Röchling's first introduction of Trafoboard HD-PH at the CWIEME 2010, the insulation material quickly became established on the market. Notable manufacturers of oil-filled high-voltage transformers rely on insulating components made of the high-quality laminated pressboard. The new dimensions allow Röchling to meet the demands of many manufacturers for large components.
The material combines outstanding electrical and mechanical features with high chemical purity and narrow tolerance ranges. Compared with polyester and casein-glued insulation materials also available on the market, the phenol-resin-glued Trafoboard HD-PH offers transformer manufacturers significant advantages. Compared with casein, Trafoboard HD-PH has a higher mechanical stability and improved drying characteristics. Unlike polyester-glued laminated pressboard, the material does not release styrene during processing.
For the development of Trafoboard HD-PH, Röchling co-operated closely with the University of Applied Sciences Osnabrück. The material consists of highly densified pressboard layers made of pure cellulose according to IEC 60641, which are bonded permanently by means of phenolic glue according to IEC 60763 type LB 3.1A.2.
Write a comment
No comments