Transformer Insulation Press Paper Board Pressphan

Product Description

Transformer board
Insulation pressboard is 100% superior sulfate insulation wood pulp.
Standard: IEC60641-3-1: 1992
Aprrarent Density: 1.0-1.3G
Material: Unbleached sulphate pulp thickness: 0.8-8mm
Size: 1mx2m 2mx4m
Color: Brown
Feature: Good mechanical stength, high electric strength resistance, larger tightness, smaller shrinkage, excellent flatness are the main strong strengths of this product.
It be mainly used in the clapboards of transformers

XUCHANG ZHUFENG INSULATION MATERIAL CO., LTD
Technical data
Product Name:Pressboard
Producing StandardIEC60641-3-1:1992
No.	Index		Unit	Specification	Standard
1	Thickness Deviation		%	less 2.0mm	±6%
				≥2.0mm	±4%
2	Density		g/cm3	≤1.6mm	1.05-1.20
				1.6-3.0mm	1.15-1.25
				3.0-6.0mm	1.20-1.30
				3.0-8.0mm	1.20-1.30
3	Water content		%	1.0-8.0mm	≤6.0
4	Tensile strength	MD	N/mm^2	≤1.6mm	≥105
				1.6-3.0mm	≥110
				3.0-6.0mm	≥115
				3.0-8.0mm	≥115
		CMD	N/mm^2	≤1.6mm	≥80
				1.6-3.0mm	≥90
				3.0-6.0mm	≥90
				3.0-8.0mm	≥90
5	Elongation	MD	%	1.0-8.0mm	≥3
		CMD	%	1.0-8.0mm	≥4
6		MD	%	1.0-8.0mm	≤0.5
	Shrinkage	CMD	%	1.0-8.0mm	≤0.7
		Thickness	%	1.0-8.0mm	≤5.0
7	Ash Content		%	1.0-8.0mm	≤0.6
8	Oil Absorption		%	≤1.6mm	≥11
				1.6-3.0mm	≥9.0
				3.0-6.0mm	≥7.0
				3.0-8.0mm	≥7.0
9	PH of aqueous Extract		%	1.0-8.0mm	6.0-8.0
10	Conductivity of aqueous Extract		Ms/m	≤1.6mm	≤4.5
				1.6-3.0mm	≤5.0
				3.0-6.0mm	≤6.0
				6.0-7.0mm	≤7.0
				7.0-8.0mm	≤8.0
11	Electric Strength	In air	kv/mm	≤1.6mm	≥13.0
				1.6-6.0mm	≥13.0
				6.0-8.0mm	≥12.0
		in oil	kv/mm	≤1.6mm	≥45
				1.6-8.00mm	≥35