EPDM Insulating rubber compound for medium voltage cable
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EPDM Insulating rubber compound for medium voltage cable
I. Type and application
Type | Product | Application |
XJ-34A | 90℃ Insulation rubber compound for medium voltage cable | Insulating rubber compound for 6～30KV flexible medium voltage cable |
XJ-34B | 90℃ Insulation rubber compound for medium voltage cable | Insulating rubber compound for 6/10KV medium voltage cable |
XJ-34C | 90℃ Insulation rubber compound for medium voltage cable | Insulating rubber compound for 8.7/15KV medium voltage cable |
XJ-34D | 90℃ Insulation rubber compound for medium voltage cable | Insulating rubber compound for 10/20KV medium voltage cable |
XJ-34E | 90℃ Insulation rubber compound for medium voltage cable | Insulating rubber compound for 26/35KV medium voltage cable |
II. Product description
XJseries insulating rubber compound formedium voltage cable, based on EPDM rubber, is mixed with various additives,and is elaborated in the extra-clean conditions. Voltage grade of cable is from6kV to 30kV. The compound has outstanding performances of vulcanization, processing, physical,mechanical, aging and electrical properties. The compound is complied withQ/320585JSDT058-2003 standard.
III. Processing
Processing Equipment | Compression ratio | L/D | Processing temp. | Recommended vulcanize temp. |
Common rubber extruder | 1.1：1～1.5：1 | 15：1～20：1 | 60～110℃ | 160-200℃ |
IV. Maximum useful shelf life
12 months at 20℃, 6 months at 30℃.
V. Properties
Table
Item | XJ-34 A | XJ-34B | XJ-34C | XJ-34D | XJ-34E | |||||
Standard | Typical | Standard | Typical | Standard | Typical | Standard | Typical | Standard | Typical | |
Tensile Strength N/mm2 | ≥7.0 | 10.9 | ≥8.5 | 11.0 | ≥8.5 | 9.4 | ≥8.5 | 11.5 | ≥8.5 | 11.0 |
Elongation at Break % | ≥300 | 430 | ≥200 | 400 | ≥200 | 280 | ≥200 | 410 | ≥200 | 400 |
Oven aging | 135℃168h | 135℃168h | 135℃168h | 135℃168h | 135℃168h | |||||
Variation on Tensile Strength % | ±15 | +14 | ±30 | +11 | ±30 | +6.5 | ±30 | +10.5 | ±30 | +11 |
Variation on Elongation at Break % | ±15 | -3 | ±30 | -4 | ±30 | -7 | ±30 | -8.5 | ±30 | -7 |
Dielectric Loss Angular Tangent value | ≤0.003 | 0.0019 | ≤0.003 | 0.0026 | ≤0.003 | 0.0025 | ≤0.003 | 0.0024 | ≤0.003 | 0.0020 |
Dielectric Constant ε | ≤2.8 | 2.60 | ≤2.8 | 2.65 | ≤2.8 | 2.64 | ≤2.8 | 2.62 | ≤2.8 | 2.60 |
Dielectric Strength MV/m | ≥25 | 31.9 | ≥25 | 30 | ≥25 | 30 | ≥25 | 30 | ≥25 | 32 |
Air bomb aging test 127℃40h |
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Tensile Strength N/mm2 |
| 10.0 |
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Variation % | ±15 | -5 | ±30 | -5 | ±30 | -5 | ±30 | -4 | ±30 | -4 |
Elongation at Break % |
| 420 |
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Variation % | ±15 | -3 | ±30 | -3 | ±30 | -2 | ±30 | 0 | ±30 | 0 |
Hot Prolongation 15min20N/cm | 250℃ | 250℃ | 250℃ | 250℃ | 250℃ | |||||
Elongation Under Load % | ≤100 | 25 | ≤175 | 50 | ≤175 | 50 | ≤175 | 50 | ≤175 | 50 |
Permanent Elongation after cooling % | ≤10 | 1 | ≤15 | 0 | ≤15 | 0 | ≤15 | 0 | ≤15 | 0 |
Volume Resistivity at20℃Ω﹒m | ≥1.0×1014 | 2.6×1014 | ≥1.0×1012 | 7.2×1013 | ≥1.0×1012 | 7.0×1013 | ≥1.0×1012 | 1.5×1014 | ≥1.0×1012 | 5.2×1014 |
Volume Resistivity at90℃Ω﹒m | 1 |
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Elastic Modulus |
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At 150% Elongation /mm2 |
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| ≥4.5 | 6.0 | ≥4.5 | 6.1 | ≥4.5 | 6.2 | ≥4.5 | 7.2 |
At 50% Elongation N/mm2 |
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| ≤7.5 | 5.1 | ≤7.5 | 5.0 | ≤7.5 | 5.2 | ≤7.5 | 6.1 |
Capacitance variation after water immersion 50±2℃ |
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Between one day and seven days % |
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| ≤15 | 6 | ≤15 | 5 | ≤15 | 5 | ≤15 | 5 |
Between seven days and fourteen days % |
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| ≤5 | 1 | ≤5 | 1 | ≤5 | 1 | ≤5 | 1 |
Ozone Resistance |
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Ozone Concentration 2-3.33PPM |
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Surface Variation | Non cracking | Pass | Non cracking | Pass | Non cracking | Pass | Non cracking | Pass | Non cracking | Pass |
Hardness IRHD | -- | 68 | ≥80 | 80 | ≥80 | 80 | ≥80 | 80 | ≥80 | 80 |
Density | -- | 1.21 |
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EPDM Insulating rubber compound for medium voltage cable
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- 3000 Tons kg/month
OKorder Service Pledge
OKorder Financial Service
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