High Quality Transformer Insulation Paper Board Insulating Press Board

• Customization: Available
• Application: High-voltage, Low-voltage
• Material: paper board
• Model NO.: insulation materials
• Structure: paper board
• Usage: High Voltage Power Transmission, Insulation, Electrical Installation
• Certification: CE, ISO9001
• Color: Natural
• Brand: NJREC or OEM
• Size: customized
• Delivery: 30days
• Tensile Strength: 110MPa
• Rated Voltage: 50KV
• Transport Package: Carton/Wooden Pallet
• Specification: 1~5MM
• Origin: China
• HS Code: 85462090
• Production Capacity: 10000/Year

Product Description

Index.		Unit	Values
	electrical presspahn Cardboard transformer insulation pressboard			≤1.6	>1.6~3.0	>3.0
1	Nominal thickness tolerance		%	≤10(±)
2	Nominal Grammage		g/cm3	1.00~1.20	1.00~1.25	1.15~1.30
3	Shear strength,M.D.		Mpa	≥100	≥105	≥110
4	Shear strength,C.M.D.		Mpa	≥75	≥80	≥85
5	Elongation (M.D.)		%	≥3.0
6	Elongation (C.M.D.)		%	≥4.0
7	Shrinkage		%	≤10.0	≤7.5	≤5.0
8	Shrinkage which would resume		%	≥45	≥50	≥50
11	Shrinkage:	M.D.	%	≤0.5
		C.M.D.		≤0.7
		Thickness direction		≤4.0
12	Moisture content		%	≤6.0
13	Ash content		%	≤1.0
14	Electrical conductivity of aquesous extract		ms/m	≤1.6	>1.6~3.0	>3.0
15	Aquesous extract (PH)		-	6~9
16	Oil absorption		%	≥11.0	≥9.0	≥7.0
17	Voltage resistant strength(In air)		MV/m	≥12	≥11	≥10
18	Voltage resistant strength(In oil)		MV/m	≥40	≥35	≥30

Electrical Paper Board
750kV and below transformer insulating board is made of 100% imported high purity insulating wood pulp as raw material,
refined by advanced technology and equipment.It has been tested by high sensitivity online metal particle detector,
featuring high chemicalpurity,high mechanical strength and good insulation performance.