Peroxide Crosslinked PE Cable-purpose Insulating Compounds
The peroxide crosslinked PE cable-purpose insulating compounds are made mainly from LDPE together with additives such as anti-oxidant and peroxide crosslinking agent through mixing, plasticization and granulation. PreSently YJ-10, YJ-35 and YJW-10, YJW-35 are available, with their applications and performances as follows:
YJ-10 Peroxide XLPE insulating compound for MV wires and cables up to 10kV (Natural)
S/N | Testing item | Unit | Standard | Typical value |
1 | Tensile strengh | MPa | ≥13.5 | 23.0 |
2 | Elongation | % | ≥350 | 530 |
3 | Brittleness tempearture Testing temperature Brittle capability | °CFail number | -76≤15/30 | 0 |
4 | Aging in airCircumstance: temperature timeChange of tensile properties ≤Change of elongation ≤ | °Ch%% | 135±2168±20±20 | +9+5 |
5 | Hot set elongation 200°C, 0.2MPa, 15min Elongation under load Permanent deformation after cooling | %% | ≤80≤5 | 55-2 |
6 | Gel content | % | ≥80 | 85 |
7 | Dissipation factor 50Hz,20°C |
| ≤ 1.0×10-3 | 2×10-4 |
8 | Dielectric constant 50Hz,20°C |
| ≤2.35 | 2.2 |
9 | DC volume resistivity at 20°C | Ω·m | ≥1.0×1014 | 9×1014 |
10 | Dielectric strength | MV/m | ≥25 | 39 |
Note: product standard JB/T 10437-2004 XLPE compounds for wired and cables
YJ-35 Peroxide XLPE insulating compound for MV wires and cables up to 35kV (Natural)
S/N | Testing item | Unit | Standard | Typical value |
1 | Tensile strengh | MPa | ≥13.5 | 23.0 |
2 | Elongation | % | ≥300 | 530 |
3 | Brittleness tempearture Testing temperature Brittle capability | °CFail number | -76≤15/30 | 0 |
4 | Aging in airCircumstance: temperature timeChange of tensile properties ≤Change of elongation ≤ | °Ch%% | 135±2168±20±20 | +9+5 |
5 | Hot set elongation 200°C, 0.2MPa, 15min Elongation under load Permanent deformation after cooling | %% | ≤80≤5 | 55-2 |
6 | Gel content | % | ≥80 | 85 |
7 | Dissipation factor 50Hz,20°C |
| ≤ 5.0×10-4 | 2×10-4 |
8 | Dielectric constant 50Hz,20°C |
| ≤2.35 | 2.2 |
9 | DC volume resistivity at 20°C | Ω·m | ≥1.0×1014 | 9×1014 |
10 | Dielectric strength | MV/m | ≥25 | 39 |
11 | Impurity content(0.175~0.250) mm ≥0.250 mm | PCSPCS | ≤50 | 30 |
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Peroxide Crosslinked PE Cable-purpose Insulating Compounds
