Factory Prices Copper Core PVC Insulation Flat Cable Used Shiping Electric Copper Core Cable

1. Product Specifications and Core Attributes

Electrical and Mechanical Specifications

• Conductor Configuration: Multiple Stranded Copper Conductors (typically 2–6 cores) with cross-sectional areas ranging from 1.5mm² to 10mm², encased in a flat PVC Sheath. The number of cores varies by application: 2-core for simple Power Lines, 4-core for three-phase systems, and 6-core for complex signal+power combinations.
• Current-Carrying Capacity:

• 1.5mm²: 10A–16A (ideal for navigation equipment, communication devices)

• 2.5mm²: 16A–25A (lighting, cabin appliances, HVAC)

• 4mm²: 25A–32A (pumps, small motors)

• 6mm²: 32A–40A (generators, fuel controls)

• 10mm²: 40A–50A (crane winches, propulsion system auxiliaries)
  Note: Ratings based on 30°C ambient temperature; derate by 10% for every 5°C increase above 30°C (common in engine rooms).

• Voltage Rating: 450/750V, compatible with standard marine electrical systems (110V, 220V, 380V) and low-voltage control circuits.
• Temperature Range:

• Continuous operation: -20°C to 70°C (suitable for polar voyages and tropical climates).

• Short-term overload: Up to 105°C for 5 seconds (withstands transient spikes from motor startups).

• Mechanical Properties:

• Conductor stranding: 19–41 fine strands (0.2mm–0.4mm diameter) per core, enhancing Flexibility and vibration resistance.

• Minimum bend radius: 4× cable width (static installation) / 6× (dynamic bending, e.g., near moving machinery).

• Overall dimensions: Width 8mm–20mm, thickness 3mm–8mm (varies by conductor size and core count), ensuring fit in tight gaps between bulkheads or pipes.

• Impact resistance: Withstands 50J impact (per IEC 60811-1-2), protecting against accidental damage from tools or equipment in busy engine rooms.

• Tensile strength: ≥15kN/m (sheath), resisting pulling forces during installation.

• Electrical Performance:

• Conductivity: ≥97% IACS (International Annealed Copper Standard), minimizing energy loss over 100m runs in large vessels.

• Conductor resistance: ≤12.1Ω/km (1.5mm²) to ≤1.83Ω/km (10mm²) at 20°C.

• Insulation resistance: ≥100MΩ at 500V DC (after 24-hour immersion in saltwater), preventing leakage.

• Dielectric strength: ≥15kV/mm, ensuring no breakdown in humid or condensation-prone areas (e.g., bilges).

2. Material Composition and Design

Conductors: High-Purity Stranded Copper

• Stranding Benefits: Fine strands (19 for 1.5mm², 41 for 10mm²) distribute mechanical stress during bending and vibration, reducing fatigue in engine rooms or areas with wave-induced movement. This design outperforms solid conductors, which are prone to cracking under constant motion.

• Corrosion Resistance: Optional tin plating (5–10μm thick) forms a protective barrier against saltwater and humidity, preventing oxidation in bilges, offshore platforms, or coastal port facilities.

• Signal Integrity: High purity ensures low resistance, critical for maintaining stable signals in navigation systems (GPS, radar) where interference or voltage drops could compromise safety.

Insulation: Marine-Grade PVC

• Composition: PVC resin blended with:

• Flame retardants (aluminum trihydroxide, antimony trioxide) to meet UL 94 V-0 standards, self-extinguishing in enclosed spaces with limited ventilation.

• UV stabilizers (carbon black) to resist degradation from sunlight (critical for deck-mounted equipment or offshore platforms).

• Plasticizers (adipates) for flexibility at low temperatures (-20°C), preventing brittleness in polar waters.

• Key Properties:

• Saltwater Resistance: Low water absorption (<0.5% by weight) and resistance to hydrolysis, ensuring insulation integrity after prolonged exposure to seawater.

• Chemical Resistance: Withstands exposure to oils, fuels, and cleaning agents (e.g., degreasers used in engine rooms).

• Thickness: 0.6mm–1.2mm (varies by conductor size), providing a robust dielectric barrier without adding unnecessary bulk.

Outer Sheath: Flat PVC

• Flat Profile Advantage: Unlike round cables, the flattened shape maximizes space efficiency in tight ship compartments, fitting into gaps between bulkheads, under floorboards, or alongside pipes. This reduces clutter and minimizes the risk of snagging in high-traffic areas.

• Mechanical Protection: Sheath thickness of 1.0mm–1.5mm resists abrasion from metal surfaces or debris, extending service life in harsh environments.

• Color Coding: Typically black (standard) or blue (for potable water systems) with printed markings indicating conductor size, voltage rating, and standards compliance (e.g., “IEC 60092-353”).

3. Specialized Applications

Navigation and Communication Systems

• 1.5mm²–2.5mm² cables power GPS receivers, radar systems, and VHF radios. Their Stranded Conductors maintain signal stability amid vibration from engines or waves, while tin plating prevents corrosion in humid wheelhouses.

• 4-core variants separate power and signal lines, reducing interference between navigation equipment and communication devices (e.g., satellite phones).

Engine Room Systems

• 4mm²–6mm² cables connect pumps, fuel injectors, and generator controls. Marine-grade PVC resists oil and coolant exposure, while the flat profile fits into tight spaces between engine components.

• Flame-Retardant Insulation minimizes fire risks in engine rooms, where fuel leaks or overheating could ignite surrounding materials.

Cabin and Habitation Areas

• 2.5mm² cables supply lighting, air conditioning, and galley appliances (microwaves, refrigerators) in passenger or crew cabins. The flat design simplifies installation behind bulkheads or under flooring, maintaining a clean aesthetic.

• 6-core variants integrate power and data lines for smart cabin systems (e.g., temperature controls, entertainment systems), reducing cable clutter.

Cargo Handling and Deck Equipment

• 6mm²–10mm² cables operate cranes, winches, and cargo pumps. Their high current capacity handles heavy loads, while UV-stabilized sheaths withstand outdoor exposure on decks.

• Tin-plated conductors resist corrosion from salt spray, ensuring reliability in offshore container terminals or bulk carriers.

Offshore Platforms

• 4mm²–6mm² cables connect drilling equipment, safety alarms, and living quarters. The flat profile eases installation in modular platform structures, while flame retardancy enhances safety in confined spaces.

• Resistance to extreme temperatures makes them suitable for both tropical (70°C) and subarctic (–20°C) offshore environments.

Port Infrastructure

• 2.5mm²–4mm² cables power dock lighting, conveyor systems, and security cameras. Their abrasion-resistant sheaths withstand frequent movement of cargo or equipment.

• Direct burial variants (with reinforced sheaths) connect onshore facilities to berthed ships, resisting soil pressure and groundwater exposure.

4. Manufacturing Process

Conductor Preparation

1. Copper Drawing: 99.99% pure copper rods are drawn into fine wires (0.2mm–0.4mm diameter) using diamond dies, then annealed at 400°C to soften the metal for flexibility.

2. Stranding: Wires are twisted into conductors using high-speed stranding machines, with lay lengths of 10–15× wire diameter to balance flexibility and conductivity.

3. Tin Plating (Optional): Conductors are electroplated in a tin sulfate bath, ensuring uniform coverage (5–10μm) to resist corrosion.

Insulation Extrusion

1. PVC Compounding: Marine-grade PVC resin is mixed with flame retardants, UV stabilizers, and plasticizers in a twin-screw extruder to form a homogeneous molten compound.

2. Extrusion: Conductors are fed through crosshead extruders, where molten PVC is applied at 160°C–180°C to form insulation layers (0.6mm–1.2mm thick).

3. Cooling: Insulated Conductors are cooled in a water bath to solidify the PVC, then dried to prevent moisture absorption.

Cabling and Sheath Formation

1. Core Assembly: Insulated conductors are aligned in a flat configuration, with filler (polypropylene tape) to maintain the flat shape and prevent core movement.

2. Sheath Extrusion: The bundle is fed through a specialized extruder that forms the flat outer sheath, applied at 170°C–190°C. The sheath is cooled and printed with permanent markings.

3. Testing: Cables undergo a “salt spray test” (per ASTM B117) for 1000 hours to validate corrosion resistance, followed by electrical testing (insulation resistance, dielectric strength).

5. General Product Information

Packaging

• Reels: Cables are wound onto wooden or steel reels (50cm–1m diameter) with flanges to prevent tangling. Reels are labeled with:

• Conductor size (e.g., 2.5mm²) and core count (e.g., 4-core).

• Standards compliance (IEC 60092, ABS).

• Length (100m, 500m, 1000m).

• Batch number and manufacturing date.

• Protection: Reels are wrapped in moisture-resistant plastic and secured with steel straps to withstand maritime shipping conditions (humidity, salt spray).
• Documentation: Each reel includes a certificate of conformity (CoC) with test results, installation guidelines, and material safety data sheets (MSDS) for PVC components.

Transportation and Handling

• Shipping Modes:

• Sea Freight: Primary mode for bulk orders, with reels containerized and secured to prevent movement during rough seas.

• Road Transport: For port-to-shipyard deliveries, using trucks with reel lifts.

• Air Freight: For urgent orders (e.g., replacement parts for stranded vessels), with limited quantities (≤500m).

• Handling Guidelines:

• Reels must be moved with cranes or forklifts—never dragged—to avoid damaging the flat sheath or conductors.

• Storage in a dry, covered area (10°C–30°C) to prevent moisture absorption; avoid direct contact with saltwater or chemicals.

• Unused cable should be rewound tightly to maintain the flat profile and prevent kinking.

Sample Provision

• Sample Availability: Free 1m samples of standard variants (e.g., 2.5mm² 4-core) are available within 3–5 business days, including test reports for conductivity and saltwater resistance.

• Custom Samples: Specialized variants (e.g., 10mm² tin-plated) incur a fee and require 7–10 days for production.

• Testing Options: Customers can request additional tests (e.g., flame retardancy per IMO FTP Code) for sample validation.

Ordering and Delivery

• Minimum Order Quantity (MOQ): 100m for Standard Cables; 500m for custom configurations (e.g., unique core counts).
• Lead Times:

• Standard orders: 7–10 business days.

• Bulk orders (≥10,000m): 15–20 business days.

• Custom variants: 20–25 business days.

• Pricing: Factory-direct pricing (USD per meter) varies by size and configuration:

• 1.5mm² 2-core: $1.20–$1.50

• 2.5mm² 4-core: $2.00–$2.50

• 6mm² 4-core: $3.50–$4.00

• 10mm² 6-core: $5.50–$6.50
  Volume discounts apply for orders over 5,000m.

• Payment Terms: T/T (30% deposit, 70% upon delivery), L/C (for international orders), or credit terms for established shipbuilders.

After-Sales Support

• Warranty: 10-year warranty against manufacturing defects (e.g., insulation breakdown, conductor corrosion under normal marine use). Excludes damage from improper installation, mechanical abuse, or chemical exposure beyond specifications.
• Technical Assistance: A team of marine electrical engineers provides:

• Guidance on conductor sizing for specific applications (e.g., 10mm² for 50A crane winches).

• Installation advice (e.g., proper clamping 间距 to reduce vibration stress).

• Compliance support for IMO SOLAS or ABS certification audits.

• Replacement and Repair: Defective cables can be returned within 30 days for replacement, verified via photos and the CoC. On-site repair guidance is available for urgent cases (e.g., at sea).
• Maintenance Recommendations:

• Annual inspections for sheath damage (cuts, abrasions) in high-traffic areas.

• Cleaning with fresh water to remove salt deposits, preventing long-term corrosion.

• Avoid routing near heat sources exceeding 70°C (e.g., exhaust pipes) without heat shields.