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XLPE Insulation Compound for MV Cable Up To 35kV
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1. Description
This material is a kind of crosslinkable polyethylene insulation compound. It is made of high quality PE resin, dicumyl
peroxide agent and antioxidant agent by plasticizing granulation. Production process uses the closed system; Loss-in-
weight Feeder which guarantees stable precision of components. It has stable physical and chemical index and good
processing property.
Application: 35kV crosslinkable cable insulation; Maximum working temperature is 90℃.
2. Technical Parameters
Item | Unit | |||
Density@23℃ | g/cm³ | ASTM D792 | 0.92±0.01 | |
Tensile strength | MPa | IEC 60811-1-1 | 22.5 | |
Elongation at break | % | 540 | ||
Impact embrittlement performance@-76℃ | Failure number | Piece | ASTM D746 | 0/30 |
After aging @135℃, 168h | Tensile strength variation | % | IEC 60811-1-2 | +4 |
Breaking elongation variation | % | -4 | ||
Hot prolongation@200℃, 0.2MPa,15min | Elongation under the load | % | IEC 60811-2-1 | 60 |
% | 0 | |||
Dielectric dissipation factor@20℃, 50HZ | － | IEC 60250 | 1×10-4 | |
Relativedielectricconstant@20℃, 50HZ | － | 2.25 | ||
MV/m | IEC 60243-1 | 40 | ||
Ω·m | IEC 60093 | 1×1015 | ||
% | ASTM D2765 | 86 | ||
Impurity content
Impurities Particle Size | Number of particles C1 | Number of particles C2 |
0.12～0.25 | 6 | 10 |
0.26～0.50 | 1 | 2 |
0.51～1.00 | 0 | 0 |
＞1.00 | 0 | 0 |
Particles number<C1 qualified. BetweenC1 and C2, re-inspection. Particles number> C2, unqualified.
3. Processing
Recommend to use conventional extruder (three layers co-extrusion, draw ratio is from 20:1 to 30:1) and other
equipments need to be adjusted according to the circumstance.
Zone | Feeding Section | Compression Section | Homogenization Section | Model Section |
Temperature Range℃ | 90-100 | 100-110 | 105-115 | 110-120 |
Above temperature is only for reference.
4. Storage
keep at room temperature; Storage environment should be clean, dry and ventilated; Best use within six months from
the date of production.
5. Product packing
500kg in each package; Inner lined with plastic sealed film bag; Corrugated carton with tray at the bottom.
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