Yjv22 4X120 Steel Strip PVC Sheath Cable with Copper Conductor and XLPE Insulation

Conductor Configuration: 4 Copper Conductors, each with a cross-sectional area of 120mm². The "4X120" designation indicates four identical conductors, optimized for three-phase power systems (Three Phase Conductors + one neutral/ground conductor).

Current-Carrying Capacity: Rated for 200–250A under normal operating conditions (30°C ambient temperature). Derating applies in higher temperatures: 10% reduction for every 5°C above 30°C, ensuring safe operation in hot industrial environments.

Voltage Rating: Suitable for medium-voltage applications up to 35kV, with a dielectric withstand voltage of 100kV for 1 minute (DC) to prevent insulation breakdown.

Temperature Range: Continuous operation from -40°C to 90°C; short-term overload tolerance up to 130°C for 5 seconds, accommodating transient current spikes common in power distribution.

Mechanical Strength:

Superior Conductivity: ≥97% IACS (International Annealed Copper Standard) minimizes energy loss, critical for long-distance power transmission (up to 1km) in infrastructure projects.

Flexibility: Stranded construction distributes mechanical stress during bending, reducing fatigue in dynamic environments (e.g., near vibrating machinery).

Corrosion Resistance: Optional tin plating (8–10μm thick) on strands prevents oxidation in humid or coastal areas, extending service life in marine or wastewater treatment facilities.

Thermal Stability: Maintains insulation integrity at 90°C, outperforming PVC (limited to 70°C) and allowing higher current carrying capacity without overheating.

Chemical Resistance: Resists oils, solvents, and acids, making it suitable for industrial zones with chemical exposure (e.g., refineries, chemical plants).

Moisture Barrier: Low water absorption (<0.1% by weight) prevents dielectric degradation in buried or wet environments, such as underground trenches or river crossings.

Mechanical Protection: Shields against crushing forces from soil pressure (in buried installations) or heavy equipment, preventing conductor damage.

Rodent and Termite Resistance: Hard steel barrier deters gnawing pests, a critical feature in rural or tropical regions where infestations risk cable failure.

Electromagnetic Shielding: Reduces electromagnetic interference (EMI) with nearby communication cables, ensuring stable power and signal transmission in industrial complexes.

Weatherability: UV-stabilized to resist degradation in direct sunlight, suitable for overhead installations in solar farms or outdoor substations.

Chemical Resistance: Withstands exposure to alkalis, salts, and industrial detergents, protecting steel armor from corrosion in coastal or chemical-rich environments.

Flame Retardancy: Meets UL 94 V-0 standards, self-extinguishing within 10 seconds to limit fire spread in commercial buildings or data centers.

Manufacturing Plants: Powers heavy machinery (e.g., steel rolling mills, automotive assembly lines) where high currents and mechanical durability are critical. The 4X120 configuration supports three-phase motors, while steel armor withstands vibration and impact.

Petrochemical Refineries: Resists chemical exposure and high temperatures, connecting transformers to processing units. XLPE insulation prevents breakdown from oil or solvent spills.

High-Rise Buildings: Distributes power from main substations to floor panels in skyscrapers. Its compact design fits in vertical shafts, and flame-retardant PVC reduces fire risks in densely populated areas.

Data Centers: Ensures stable power for server rooms, where voltage fluctuations could disrupt operations. The cable’s low EMI properties prevent interference with sensitive electronics.

Renewable Energy Farms: Connects wind turbines or solar inverters to grid substations. UV-resistant PVC and steel armor withstand outdoor conditions, while XLPE handles high currents from energy generation.

Transportation Hubs: Powers electrical systems in airports, railway stations, and metro networks. The cable’s flexibility allows routing under tracks or through tunnels, and impact resistance protects against heavy foot or vehicle traffic.

Water Treatment Plants: Resists moisture and chemical exposure, linking pumps and filtration systems. Tin-plated conductors prevent corrosion from chlorinated water.

Mining Operations: Withstands harsh underground conditions (dust, moisture, impact) to power drilling equipment and ventilation systems. Steel armor protects against rock falls or machinery collisions.

Copper Drawing: Raw copper rods (99.99% pure) are drawn through diamond dies to form wires (0.5–0.8mm diameter), then annealed at 400°C to soften the metal for flexibility.

Stranding: Wires are twisted into 120mm² conductors using a high-speed stranding machine, with a lay length of 15–20× wire diameter to balance flexibility and conductivity.

Tin Plating (Optional): Conductors are electroplated in a tin bath, ensuring uniform coverage to enhance corrosion resistance.

Compounding: Polyethylene resin is mixed with cross-linking agents (peroxides) and antioxidants to form XLPE pellets.

Extrusion: Conductors are fed through an extruder, where molten XLPE is applied at 180–200°C, forming a 2.0–2.5mm thick insulation layer.

Cross-Linking: Insulated conductors are heated to 250°C in a continuous vulcanization (CV) tube, triggering molecular cross-linking to enhance thermal and mechanical properties.

Core Assembly: Four insulated conductors are twisted together with a filler (polypropylene rope) to form a round core, ensuring uniform armor coverage.

Steel Strip Wrapping: Galvanized steel strips are helically wrapped around the core at a 30° angle, with overlapping edges (15–20% overlap) for complete protection. A second layer is applied in the opposite direction to enhance strength.

Sheath Application: The armored core is passed through a PVC extruder, applying a 1.8–2.2mm thick sheath at 160–180°C, which bonds to the armor for water resistance.

Quality Testing:

Steel Reels: Standard lengths (50m, 100m, 200m) are wound onto heavy-duty steel reels (1.2–1.8m diameter) with flanges. Reels are labeled with cable type (YJV22 4X120), length, voltage rating, batch number, and compliance marks (CE, UL).

Protective Covering: Reels are wrapped in waterproof plastic film to shield against moisture, and steel straps secure the cable to prevent unwinding during transport.

Documentation: Each reel includes a certificate of conformity (CoC), test reports (electrical and mechanical), and installation guidelines.

Shipping Modes: Available via road (trucks with reel lifts), rail (flatcars for bulk orders), or sea (container shipping for international deliveries). Air freight is offered for urgent, small-length orders.

Handling Guidelines:

Sample Availability: 1–5m samples are available upon request, free for standard configurations. Custom samples (e.g., tin-plated conductors) incur a nominal fee.

Lead Time: Samples are shipped within 3–5 business days, with test reports included to verify compliance.

Minimum Order Quantity (MOQ): 50m for standard orders; 100m for custom variants (e.g., special sheath colors for identification).

Lead Times: Standard orders ship within 7–10 business days; bulk orders (1000m+) may require 15–20 days.

Pricing: Varies by length and customization, with volume discounts for orders over 500m. Pricing includes standard packaging and documentation.

Warranty: 15-year warranty against manufacturing defects (e.g., insulation breakdown, armor separation under normal use). Excludes damage from improper installation, chemical exposure beyond specifications, or mechanical abuse.

Technical Assistance: A team of engineers provides installation guidance, including proper termination methods (compression lugs), bending radius calculations, and compliance with local electrical codes (e.g., NEC in the US, BS 7671 in the UK).

Returns and Replacements: Defective products can be returned within 30 days for a full refund or replacement, provided the issue is verified with photos and the CoC.

Maintenance Services: Optional annual inspections (conducted by certified technicians) check for sheath damage, armor corrosion, and insulation integrity, extending cable lifespan