Description

Products Description

Insulating Paper For Transformers is a thin layer of insulating material made of natural cellulose (wood pulp) or synthetic fiber through a special process. It is used for insulation protection of power cables, transformers, motors and other equipment.

Core function: Isolate conductive parts to prevent current leakage or short circuit, and resist high temperature and aging. The product complies with international standards (IEC 60554, ASTM D202)

Name	Electrical Insulation paper (Color: Natural)	Date of Producing	2024.01
Producing Standard	IEC60641 - 3 - 2:2007	Class	P4.1A	Thickness	0.25mm
Item	Unit	Standard	Test value	Test method
Thickness Deviation	%	±10	2.3	\multirow{13}{*}{According to the specification in IEC60641 - 3 - 2: 2007}
Apparent Density	g/cm³	1.0 - 1.20	1.13
Tensile strength	MD	N/mm²	≥80	80.3
	CMD	N/mm²	≥40	42.6
Elongation	MD	%	≥2.0	2.5
	CMD	%	≥7.0	7.5
Shrinkage	MD	%	≤1.0	0.43
	CMD	%	≤1.5	0.74
	Thickness	%	≤7.0	5.4
Ash Content	%	≤1.0	0.62
Oil Absorption	%	≥10.0	20.4
pH of aqueous Extract	-	6 - 9	7.48
conductivity of aqueous Extract	mS/m	≤8.0	5.5
Electrical strength	in air	kV/mm	≥10	10.4
	in oil	kV/mm	≥60	60.3
Moisture content	%	≤8.0	7.9