Specifications transformer electrical inslation kraft paper:

1 better machinery intensity

2 higher resist-electric intensity

3 flat surface

Insulation kraft paper is made from 100% superior sulfate insulating wood pulp. It has good dielectric and high mechanical properties. Insulation Presspaper is widely used for tansformers, electric motors, electric apparatus, meters, switches, etc. It also can be used to laminate with polyester film to produce insulation flexible laminates.     Features and applications of inslation kraft paper:   -high chemical purity, excellent elongation, good mechanical and dielectric strength.   -for oil-immersed transformers, capacitors, reactors and switches.       Technical Data of inslation kraft paper:  

Properties				Units	Values
Thickness				mm	0.1-0.5
Thickness Tolerance				%	≤ ±10
Density				g/cm3	1.0-1.2
Tensile Strength	MD		No Bending	Mpa	≥80
			After Bending		≥35
	TD		No Bending		≥40
			After Bending		≥60
Moisture Content				%	≤8.0
Ash Content				%	≥1.0
Electric Conductivity				Ms/m	≤8.0
PH of Water Extractives					6.0-9.0
Electric Breakdown Strength(in air)		0.10mm		KV/mm	≥9.0
		0.15-0.25mm			≥10
		0.30-0.35mm			≥10
		0.40-0.50mm			≥9.0
Electric Breakdown Strength(in air), after bending		0.10-0.15mm		KV/mm	≥7.0
		0.20-0.25mm			≥8.0
		0.30mm			≥8.0
		0.35-0.50mm			≥7.0

          For more information, please feel free to contact Chrystal Zhai: