Flame-Retardant MV Medium Voltage Cable 6kV-26/35kV Armored Power Cable with XLPE Insulation and Steel Armor
Flame-retardant medium voltage armored power cable designed for 6kV to 26/35kV applications, featuring XLPE insulation and steel armor protection for demanding industrial environments.
Suitable for power supply lines with flame retardant requirements, including urban underground power grids, power station outgoing lines, and internal power distribution systems for industrial and mining enterprises.
- Conductor: Tightly pressed circular conductor
- Conductor Shield: Semi-conductive shielding material (below 500mm²); Semi-conductive tape + semi-conductive shielding material (500mm² and above)
- Insulation: XLPE (Cross-linked polyethylene)
- Insulation Shield: Peelable semi-conducting shielding material
- Metal Shielding: Copper tape; Copper wire (35kV, 500mm² and above)
- Filler: Non-hygroscopic filling rope
- Binder Tape: Non-hygroscopic straps
- Armor: 1-core: stainless steel tape; 3-core: galvanized steel tape
- Voltage Rating Uo/U(Um): 3.6/6(7.2)kV, 6/6(7.2)kV, 6/10(12)kV, 8.7/10(12)kV, 8.7/15(17.5)kV, 12/20(24)kV, 18/20(24)kV, 18/30(36kV), 21/35(40.5)kV, 26/35(40.5)kV
- Temperature Rating: Maximum conductor operating temperature: +90°C
- Operating Ambient Temperature: -15°C to +55°C
- Cable Laying Temperature: Not less than 0°C (preheating required below 0°C)
- Minimum Bending Radius: Single core: 15D; Multi-core: 12D
| Specs (mm²) | Conductor Diameter (mm) | Insulation Thickness ±1.0mm | Approx Outer Diameter (mm) | Approx Weight (kg/km) |
|---|---|---|---|---|
| 1×50 | 7.6±0.2 | 25.6 | 33.2 | 1630 |
| 1×70 | 9.2±0.2 | 27.2 | 36.2 | 2247 |
| 1×95 | 10.9±0.2 | 28.9 | 37.9 | 2585 |
| 1×120 | 12.2±0.2 | 30.2 | 39.4 | 2901 |
| 1×150 | 13.6±0.2 | 31.6 | 41.0 | 3254 |
| 1×185 | 15.2±0.2 | 33.2 | 42.8 | 3698 |
| 1×240 | 17.4±0.2 | 35.4 | 45.1 | 4365 |
| 1×300 | 19.5±0.2 | 37.5 | 47.4 | 5061 |
| 1×400 | 22.0±0.2 | 40.0 | 50.1 | 5954 |
| 1×500 | 24.8±0.2 | 43.6 | 54.0 | 7222 |
| 1×630 | 28.2±0.2 | 47.0 | 57.9 | 8794 |
| 1×800 | 33.7±0.2 | 52.5 | 63.6 | 10883 |
These cables use XLPE insulation with halogen-free compounds and steel/aluminum armor to limit flame spread, complying with IEC 60332-3-24 Class B for vertical flame resistance.
Yes, but require sand bedding and moisture-proofing due to steel tape armor. Avoid sharp stones during installation to prevent sheath damage.
- Continuous operation: 90°C
- Short-circuit (5 sec): 250°C
- Installation limit: -20°C (preheating needed below 0°C)
Weight reduction: 40% lighter than steel tape; Corrosion resistance: Ideal for coastal/chemical plant applications.
Yes, but require enhanced mechanical protection and MSHA/IEC 62258 certification.
All cables undergo rigorous testing including partial discharge (≤10pC at 1.5U0 per IEC 60885) and insulation resistance (≥3,670 MΩ*km at 20°C) to ensure compliance with international standards.
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