Key Features of Pre-Compressed Pressboards For Power Transformers

• The pressboard is made from 100% high purity unbleached sulfate kraft pulp.
• The wet board is pressed & dried simultaneously to obtain boards of good dimensional stability, mechanical strength & electric strength.
• Good mechanical strength & compressibility make Sigmacom 3.1 an ideal board for manufacture of various machined components such as radial & axial spacers, cylinders, runners & blocks.
• Standard thickness of solid board: 1.0, 1.5, 2.0, 3.0, 4.0, 5.0 & 6.0 mm
• Standard sheet sizes in mm
• Tolerance on thickness: =1.50 mm ± 7.5%; > 1.50mm ± 5.0%
• On sheet size: +/- 5.0mm