XLPE Insulated Flame Retardant Shipboard Power Cable without Inner Sheath
Our 0.6/1kV XLPE Insulated Flame Retardant Shipboard Power Cables without Inner Sheath (CJ85/SC and CJ86/SC series) are designed for power transmission, lighting, and general control applications on marine vessels, offshore platforms.
This series features a simplified construction without inner sheath, offering a lighter weight, smaller diameter, and more cost-effective solution compared to traditional double-sheath designs, while maintaining full low smoke zero halogen (LSZH) flame retardant performance.
Overview
1. Unique Value Proposition: Why No Inner Sheath?
Feature | Benefit |
Eliminated inner sheath | Reduced overall cable diameter – easier routing in confined spaces |
Lighter weight per meter | Lower shipping costs and reduced structural load on vessels |
Fewer material layers | More economical than traditional double-sheath designs |
Full LSZH protection | Maintains low smoke, zero halogen, and Category A flame retardancy |
Braided armor | Directly applied over XLPE insulation for mechanical protection |
2. Comparison: With Inner Sheath vs. Without Inner Sheath
Feature | CJPJ/SC Series (with inner sheath) | CJ85/SC Series (without inner sheath) |
Construction | Conductor → XLPE → Inner Sheath → Armor → Outer Sheath | Conductor → XLPE → Armor → Outer Sheath |
Weight | Heavier | Lighter |
Diameter | Larger | Smaller |
Cost | Higher | More economical |
Mechanical Protection | Enhanced | Adequate for most applications |
Application | Harsh environments, high abrasion risk | General areas, cable trays, retrofits |
3. Core Technical Features
Parameter | Specification | Standard |
Rated Voltage | 0.6/1 kV | IEC 60092-350 |
Conductor | Stranded tinned annealed copper, Class 2 | IEC 60228 |
Insulation | XLPE (Cross-linked Polyethylene) | IEC 60092-351 |
Armor | Tinned copper wire braid | - |
Outer Sheath | SHF2 or SHF1 – halogen-free flame retardant | IEC 60092-360 |
Normal Operating Temp | Up to 90°C | - |
Short Circuit Temp | Up to 250°C (max 5s) | - |
Flame Retardancy | Category A | IEC 60332-3-22 |
Low Smoke | Light transmittance ≥ 60% | IEC 61034 |
Halogen-Free | Halogen acid gas < 5 mg/g, pH ≥ 4.3 | IEC 60754 |
4. Sheath Material Options: SHF1 vs. SHF2
Property | SHF1 (CJ86/SC) | SHF2 (CJ85/SC) |
Material Type | Halogen-free thermoplastic compound | Halogen-free thermoset compound |
Temperature Range | -40°C to +80°C | -40°C to +90°C |
Oil Resistance | Moderate | Excellent – suitable for engine rooms |
Mechanical Strength | Good | Superior – cross-linked structure |
Application | Cabins, control rooms, general areas | Machinery spaces, decks, areas with oil exposure |
Both options provide LSZH flame retardant performance to IEC 60332-3-22 Category A.
5. Application Scenarios
Environment | Recommended Type | Sheath | Rationale |
Cabins, control rooms, corridors | CJ86/SC | SHF1 | Economical LSZH, moderate temperature |
Cable trays, general power distribution | CJ85/SC or CJ86/SC | SHF1/SHF2 | Lightweight, easy installation |
Engine rooms, machinery spaces | CJ85/SC | SHF2 | High oil resistance + higher temperature rating |
Decks, outdoor areas | CJ85/SC | SHF2 | UV and temperature resistance |
Retrofit projects | Both | - | Smaller diameter aids in existing trays |
This series is not recommended for extreme mechanical stress areas where additional inner sheath protection is required, such as heavy vibration zones or areas with potential abrasion between armor and insulation.
6. Why Choose Our Inner-Sheath-Free Cables?
Lightweight Design – Reduced weight per meter compared to double-sheath cables, lowering shipping costs and vessel structural load.
Smaller Diameter – Easier routing through cable trays, conduits, and tight spaces – ideal for new builds and retrofits.
Cost-Effective – Fewer material layers provide a more economical solution without compromising flame retardant safety.
Full LSZH Safety – Maintains low smoke, zero halogen, and Category A flame retardancy for maximum fire safety.
Proven Durability – Tinned copper conductor resists corrosion; braided armor provides mechanical protection.
International Compliance – Manufactured to IEC standards for global marine and offshore projects.
