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                                                                      Peroxide XLPE Insulation Compound for

                                                  35KV and below Crosslinked Polyethylene Insulated Power Cable

By introducing domestically advanced equipment and production technologies, Far East New Materials’ insulation material (YJ-35) for 35KV and below crosslinked polyethylene insulated power cable are peroxide XLPE insulation compound. It is produced from low density polyethylene as base material and auxiliary materials, such as cross-linking agent and antioxygen, after being mixed, plasticized and granulated. With easy processing, good application temperature and other advantages, this kind of material can be applicable for the insulating layer of 35KV and below medium and low voltage power cables.

I.      Basic Performances

Item		Standards	Unit	Test Result	Item Conclusion
Tensile Strength		≧13.5	MPa	20.2	Qualified
Elongation at Break		≧350	%	510	Qualified
110°C×168h Variable Rate of Tensile Strength in Thermal Aging		≦+20 ≥-20	%	+7	Qualified
Variable Rate of Elongation at Break		≦+20 ≥-20	%	+2	Qualified
Low-temperature Impact Embrittlement (-76°C)		≦15/30	Nr.	0/30	Qualified
Thermal Elongation (200°C×15min, 0.2Mpa)	Hot Elongation	≦80	%	63	Qualified
	Permanent Deformation after Cooling	≦5	%	0	Qualified
Gel Content		≧80	%	86	Qualified
Dielectric Dissipation Factor (20°C, 50Hz)		≦0.001		0.0002	Qualified
Dielectric Constant (20°C, 50Hz)		≦2.35		2.22	Qualified
Volume Resistivity (20°C, 1KV)		≧1×1014	Ω.m	2.4×1014	Qualified
Dielectric Strength		≧25	MV/m	42	Qualified

II.      Impurity Content

0.12～0.25                10                15

0.26-0.50                 3                 6

0.51-1.00                 0                 1

    ﹥1.00                 0                 0

Note: particle size of impurity should be the maximum distance between two points.

III.      Proposed Processing Temperature

Area I: 85-95°C

Area II: 95-105°C

Area III: 105-116°C

Machine head: 115°C

IV.      Packing and Storage

The insulation compound is hermetically packed with double corrugated cardboard and pallet equipped under the cardboard bottom, with the weight per box of 250/500Kg. It shall be stored in the clean, dry and well ventilated warehouse, with storage temperature not lower than 10°C. Meanwhile, it shall be stored and transported as non-dangerous good, and not be damaged due to abnormal conditions, including solarization, drench and water immersion.