Tel: +(65) 6286 3622
Application
600V~25KV Cross-Linked Polyethylene Insulated and Polyvinyl Chloride Sheathed Cables are used as wiring for power and equipment.
Construction features
(1)Conductor: untinned soft annealed stranded or solid copper wires
(2)Conductor screen (voltage >2001V)
(3) Insulation: XLPE
(4)Insulation screen (voltage > 2001V)
(5)Copper tape shielding (voltage > 2001V)
(6)Two or more cores are twisted together, cable core covered with proper separator
(7)Sheath: PVC
Physical and Electrical Properties Comparison of XLPE, PE and EPR
| Items | XLPE | PE | EPR | ||
| Physical Properties | Before Ageing | Tensile strength (kg/mm2)
Elongation (%) |
1.5 ~ 2.3
500 ~ 600 |
1.2 ~ 1.5
500 ~ 700 |
0.4 ~ 0.9
400 ~ 600 |
| After Ageing | 100°C
120°C 150°C |
Excellent
Excellent Good |
Good
Melt Melt |
Excellent
Good Fairly Good |
|
| Hot Deformation at 150’C
Oil Resistance at 70’C |
Good
Good |
Melt
Good |
Good
Poor |
||
| Electrical Properties | Volume resistivity at 20’C (Ω.cm)
Dielectric constant tangent (50Hz) Dielectric Less Tangent (50Hz) Dielectric Strength (KV/mm) |
>1016
2.3 0.05 30~50 |
>1016
2.3 0.05 30~50 |
>1015
2.3 0.3 30~45 |
|
| Max. operational conductor temperature (‘C) | 90 | 75 | 90 | ||
| Max. conductor temperature at short circuit (‘C) | 250 | 150 | 250 | ||