TS EN 60641-1

TS EN 60641-1 is the Turkish adoption of the part of the pressboard and presspaper specification that sets out definitions and general requirements for electrical purposes. These are cellulose-based sheet materials used in electrical equipment for mechanical support and insulation; this part provides the common starting framework for naming and understanding them.

Pressboard and presspaper are widely used in layered insulation systems in transformers, motors, generators and similar electrical apparatus. In practice, material structure, density, thickness and moisture behaviour all influence performance, but this document section is primarily about aligning terminology and general rules rather than prescribing a full product test programme. It gives manufacturers, users and laboratories a shared technical language.

Why the terminology matters in electrical insulation materials

In general technical context, insulating papers and boards are distinguished not only by being cellulose-based, but also by how they are classified for electrical strength, mechanical integrity and processability. The definitions in this standard help separate closely related products and reduce ambiguity in specification writing, procurement and technical communication. Presspaper is typically associated with thinner, more flexible uses, while pressboard is associated with thicker, more structural insulation applications.

This TS EN 60641-1 edition is based on IEC 60641-1:1979+A1:1993 and is a withdrawn CENELEC/IEC standard. It should therefore be read as a historical terminology and general-requirements reference for this material family, not as a current product performance standard.