Pre-Compressed Pressboards

PC

This superior quality Swiss Pre-Compressed Pressboard comes in 1000 x 2000 mm & 1400 x 2500 mm sheet size in 0.8, 1.0, 1.5, 2.0, 3.0 & 4.0 mm thickness as per Mill Standard and is recommended for use in up to 36 kV Class Distribution Transformers

STB 3.1

This grade is supplied in 1000 x 2000 mm & 1400 x 2500 mm sheet size in 0.8, 1.0, 1.5, 2.0, 3.0, 4.0, 5.0, 6.0 (Lam) & 8.0 (Lam) mm thickness and conforms to Type B3.1A of IEC 60641-3-1A Standard for use in up to 66 kV Class transformers

G4

This grade is made from imported pulp and is offered in 2100 x 4200 mm, 2200 x 4400 mm & 3200 x 4200 mm sheet size in 1.0-9.0 mm thickness and conforms to Type B3.1A of IEC 60641-3-1 Standard for use in 110-220 kV Power Transformer

Grade	Suitable for	Sheet Size	Standard
PC	36 kV Distribution Transformer	1000 x 2000 mm	Mill Standard
STB 3.1	66 kV-110 kV Transformer	1000 x 2000 mm, 1400 x 2500 mm	IEC 60641-3-1 B3.1A
G4	110 kV-220 kV Power Transformer	2100 x 4200 mm, 2200 x 4400 mm, 3200 x 4200 mm	IEC 60641-3-1 B3.1A