Raman Sigmacom 3.1 SS boards are available in smaller sheet size of 1,050 x 2,100 mm only. The pre-compressed pressboard variety is manufactured from unbleached kraft pulp and treated water. The wet board is pressed and dried simultaneously to obtain boards of good mechanical strength in machine, cross-direction and dielectric strength. Recommended for use up to 66 kV.
Raman Sigmacom 3.1 SS conforms to IEC 60641-3-1, 3.1A specifications.