500KV layer insulating paper is made from 100% high quality unbleached sulfate wood pulp and used for 500KV transformer and reactor(rated voltage: ¡Ü500KV).This product is reel. Diameter of reel: 550-650mm. Width of reel: 625¡À5mm or according to order.

Properties

Name		unit	Specification
			BZZ-075	BZZ-125
Thickness		um	75¡À5	125¡À7
Density		g/cm3	0.95¡À0.05
Tensile Strength ¡Ý	MD	KN/m	6.00	9.20
	CD		2.60	4.20
Strength	MD	%	2.0	2.3
	CD		6.0	7.0
Porosity		um/(Pa.s)	0.085	0.255
Tear Strength CD ¡Ý		mN	500	1015
Electrical conductivity of water extract		mS/m	4.0
PH of water extract			6.0-8.0
Ash content		%	0.25
Na content in ash ¡Ü		mg/kg	30
Breakdown strength of power frequency ¡Ý		KV/mm	8.00
Dielectric dissipation factor (tg¦Ä 100¡æ)		%	0.23
Moisture		%	6.0-9.0