High Current-Carrying Capacity with Solid Copper Conductor: Compared to small cross-section cables (e.g., 2.5mm², 4mm²), the 6mm² solid copper conductor provides a 40-60% higher current-carrying capacity, making it suitable for medium-to-high power equipment. Unlike Stranded Copper Conductors, the solid structure has a more stable current transmission path—there is no contact resistance between strands, so the overall conductor resistance is lower (by about 5-8% compared to Stranded Conductors of the same cross-section). This not only reduces energy loss but also avoids local overheating caused by poor contact between strands, a common issue in high-load scenarios.
Wide Voltage Adaptability: The 450/750V rated voltage covers most low-voltage power grids worldwide. It is compatible with China’s 220V/380V civil and industrial grids, Europe’s 230V/400V grids, and Southeast Asia’s 220V/380V grids, eliminating the need for regional product customization. This cross-regional adaptability is particularly valuable for multinational enterprises or global construction projects, as it simplifies procurement and reduces inventory costs.
Durable PVC Insulation with Multiple Protective Functions: The specially formulated rigid PVC insulation layer integrates electrical insulation, mechanical protection, and flame retardancy. Its high hardness (65-75 Shore A) enables it to resist abrasion during installation (e.g., friction with pipe walls or building materials) and prevent conductor exposure caused by external impacts. The flame-retardant additives (aluminum hydroxide, antimony trioxide) form a protective char layer when exposed to fire, isolating the conductor from oxygen and slowing the spread of flames—this is a critical safety feature in densely populated or equipment-intensive areas.
Stability in Fixed Wiring: The solid conductor’s rigidity ensures the cable maintains its shape after installation, avoiding sagging or displacement caused by gravity or environmental vibrations (e.g., vibrations from industrial motors). This stability is essential for long-term fixed wiring, as it reduces the risk of insulation damage due to cable movement and ensures consistent performance over the cable’s service life (typically 20-25 years in indoor environments).
Industrial Equipment Power Supply: In factory workshops, the cable is widely used for powering medium-to-high power equipment:
Motors: It supplies power to 5-10kW three-phase asynchronous motors (common in assembly lines, pumps, and fans). The 6mm² conductor’s 40-50A current-carrying capacity matches the motor’s rated current, and the solid structure resists vibration-induced fatigue, ensuring stable power transmission.
Frequency Converters and Inverters: It connects frequency converters to motors or other equipment, transmitting adjusted AC power. The low conductor resistance minimizes voltage drops (≤2% over 100 meters), ensuring the equipment receives stable voltage and operates efficiently.
Large-Scale Production Lines: It serves as the main power Distribution Cable for production lines (e.g., automobile manufacturing, electronic component assembly), powering multiple pieces of equipment simultaneously without overloading.
Commercial Building Power Distribution: In shopping malls, hotels, and office buildings, the cable meets high-power electricity demand:
Central Air Conditioning Systems: It supplies power to central air conditioning hosts (3-5 tons) and outdoor units. The 6mm² conductor handles the 30-40A rated current of the hosts, and the Flame-Retardant Insulation complies with commercial building fire codes (e.g., China’s GB 50016-2014).
Large-Scale Lighting and Displays: It powers large LED screens (e.g., shopping mall billboards) and high-power lighting systems (e.g., stadium lighting). The wide voltage adaptability ensures compatibility with the building’s 380V power supply, and the solid conductor’s stability prevents performance issues caused by cable movement.
Charging Piles: In commercial parking lots, it is used as the Power Cable for DC fast-charging piles (30-60kW). The 6mm² conductor withstands the 30-45A charging current, and the PVC insulation resists minor impacts from vehicles or pedestrians.
Civil Building High-Power Wiring: In villas, high-end apartments, and large residences, the cable addresses high-power household needs:
Main Incoming Cables: It serves as the main cable from the community power grid to the household distribution box, handling the 40-50A total household current (for villas with multiple air conditioners, electric heating, and other high-power appliances).
High-Power Appliance Dedicated Lines: It provides dedicated power to electric heating systems (2-3kW), instant water heaters (3-5kW), and home energy storage systems (5-10kWh). Using a dedicated cable avoids overloading shared lines and reduces the risk of tripping.
Infrastructure and Key Facilities: In infrastructure projects, the cable ensures reliable power supply for critical systems:
Small Substations: It acts as the low-voltage outgoing cable from small substations (10kV/0.4kV) to nearby communities or industrial parks, transmitting 40-50A current to multiple users.
Communication Base Stations: It supplies power to base station equipment (e.g., transceivers, air conditioners) in remote areas. The wide voltage adaptability allows it to work with unstable rural power grids (voltage fluctuations ±10%), and the durable insulation withstands harsh indoor environments (dust, temperature changes).
Oxidation Resistance: Copper forms a thin, dense oxide layer (Cu₂O) when exposed to air. Unlike aluminum oxide (which is non-conductive and thickens over time), Cu₂O is conductive and prevents further oxidation. This ensures the conductor’s resistance remains stable even in humid environments (e.g., basements, industrial workshops with high humidity).
Thermal Conductivity: Copper’s thermal conductivity (401W/m·K) is 1.6 times that of aluminum, enabling efficient heat dissipation. When the conductor carries high current, heat is quickly transferred to the insulation layer and then to the environment, reducing the risk of overheating.
PVC Resin (65-70%): The base material, providing structural support and electrical insulation. It is a suspension-grade resin (K-value 65-70) with high molecular weight, ensuring good mechanical strength and Chemical Resistance.
Plasticizers (10-15%): Dioctyl phthalate (DOP) or diisononyl phthalate (DINP) is used to adjust Flexibility. The low plasticizer content (10-15%) ensures the insulation remains rigid (65-75 Shore A) while maintaining cold resistance (-15℃).
Stabilizers (3-5%): Calcium-zinc composite stabilizers replace traditional lead-based stabilizers, making the insulation environmentally friendly (RoHS compliant). They prevent PVC degradation during high-temperature extrusion and long-term use.
Flame Retardants (8-12%): A combination of aluminum hydroxide (ATH) and antimony trioxide (Sb₂O₃) is used. ATH releases water vapor when heated, cooling the insulation and diluting flammable gases; Sb₂O₃ reacts with PVC combustion products to form a flame-retardant char layer.
Lubricants (1-2%): Stearic acid or polyethylene wax reduces friction between the PVC compound and extrusion equipment, ensuring a smooth insulation surface.
Single-Core Solid Structure: The cable consists of one solid copper conductor surrounded by a single layer of PVC insulation (no outer jacket). This design keeps the outer diameter compact (about 5.5mm), allowing it to pass through small-diameter pipes (≥20mm) or narrow wall cavities. The absence of an outer jacket also reduces material costs while maintaining sufficient protection (the PVC insulation itself meets mechanical and environmental requirements for indoor fixed wiring).
Color Coding for Easy Identification: The PVC insulation is available in standard colors according to IEC 60446, facilitating correct wiring:
Brown, black, or red: Live (phase) wires.
Blue: Neutral wire.
Green-yellow striped: Ground Wire.
Rigid Structure for Stable Fixed Wiring: The solid single-core design gives the cable high rigidity, allowing it to maintain its shape once installed. Unlike flexible stranded cables that may sag or shift over time (especially in vertical wiring scenarios), the H07V-U 6mm² cable stays in place without additional fasteners, reducing the risk of insulation wear caused by friction with surrounding materials. This rigidity also simplifies installation in narrow spaces (e.g., wall cavities, small-diameter conduits) as the cable can be pushed through without kinking, improving installation efficiency by 20-30% compared to stranded cables of the same cross-section.
Industrial Sector:
Motor Power Supply: Used for wiring between distribution boxes and medium-power motors (5-15kW, such as three-phase asynchronous motors in assembly lines, pumps, and fans). The 6mm² conductor’s 40-50A current-carrying capacity matches the power demand of these motors, and the rigid structure resists vibration-induced displacement (a common issue in industrial workshops). The flame-retardant PVC insulation also meets the fire safety requirements of factory buildings, where a single electrical fault could trigger widespread fire risks.
Control System Wiring: Employed in low-voltage control circuits of industrial equipment (e.g., frequency converters, PLC control panels, and sensor arrays). The cable’s low conductor resistance ensures stable signal transmission (critical for precise equipment control), and its chemical resistance protects against oil and coolant spills in machine tool workshops.
Heavy-Duty Equipment Power: Powers high-load industrial devices such as electric hoists, small cranes, and heating furnaces (≤10kW). The cable’s ability to withstand 70℃ operating temperatures and 450/750V voltage fluctuations ensures reliable performance under the dynamic load changes of these devices.
Commercial Sector:
Central Air Conditioning (CAC) and HVAC Systems: Supplies power to CAC compressors (3-5HP) and large ventilation fans in shopping malls, hotels, and office buildings. The 6mm² conductor handles the 30-40A startup current of CAC units, while the rigid structure simplifies ceiling and wall wiring—installers can route the cable through narrow HVAC ducts without additional support.
Commercial Kitchen Equipment: Wires high-power appliances such as electric stoves, steam ovens, and dishwashers (3-8kW). The PVC insulation’s heat resistance (up to 70℃) and oil resistance protect against the high-temperature and greasy environment of commercial kitchens, and the flame-retardant performance reduces fire risks from oil splatters.
Large-Scale Commercial Displays: Powers LED video walls, billboards, and stage lighting systems in shopping centers and exhibition halls. The cable’s wide voltage adaptability (450/750V) ensures compatibility with the 220V/380V power supplies used in these installations, and its low resistance minimizes voltage drop—even over 50-meter runs, the voltage drop is ≤3% (well within the 5% limit for sensitive electronic equipment).
Civil Sector:
High-Power Household Appliance Wiring: Dedicated to powering heavy-duty home appliances such as electric water heaters (≥3kW), induction cooktops (2-3kW), and home energy storage systems (5-10kWh). The 6mm² conductor avoids overload issues common with smaller cables (e.g., 2.5mm² cables used for regular sockets), and the rigid structure is ideal for wall-mounted or under-counter wiring, where flexibility is unnecessary but stability is critical.
Residential Main Incoming Cables: Serves as the main power cable for villas, townhouses, and multi-storey apartments with high electricity demand (e.g., households with 3+ air conditioners and electric vehicle chargers). The cable’s 450/750V rating withstands the voltage fluctuations of the municipal power grid, and its flame-retardant insulation complies with the fire safety codes of residential buildings (e.g., GB 50217 in China, NEC 310 in the U.S.).
Renovation and Retrofit Projects: Used in the wiring of old building renovations, where existing wall cavities and conduits are narrow. The cable’s rigidity allows it to be pulled through existing pipes without replacing the conduit (a costly and time-consuming process), reducing renovation costs by 15-20% compared to using Flexible Cables that require conduit expansion.
Infrastructure Sector:
Communication Base Stations: Wires low-voltage power systems (e.g., backup batteries, cooling fans) in 5G and 4G base stations. The cable’s moisture resistance ensures performance stability in outdoor cabinets (where humidity can reach 90%), and its wide temperature range (-15℃ to 70℃) adapts to the extreme temperatures of base stations in deserts or high-altitude areas.
Charging Piles: Powers 7-22kW AC charging piles for electric vehicles (EVs) in residential communities and commercial parking lots. The 6mm² conductor handles the 32-50A current of these charging piles, and the rigid structure resists the mechanical stress of frequent cable handling (e.g., EV owners accidentally stepping on or pulling the cable).
Small-Scale Substations: Used in low-voltage distribution circuits (400V side) of small substations (≤10MVA) in rural areas or industrial parks. The cable’s compliance with IEC and VDE standards ensures compatibility with international substation equipment, and its high voltage tolerance (750V) withstands the transient voltage spikes common in substation operations.
Electrolytic Refining: Raw copper is dissolved in sulfuric acid to form a copper sulfate solution, which is then electrolyzed. Pure copper (99.95%) deposits on the cathode, while impurities settle as sludge.
Vacuum Degassing: The refined copper is melted in a vacuum furnace to remove residual gases (e.g., oxygen, hydrogen) that could cause bubbles or cracks in the solid conductor.
Continuous Casting: The degassed copper is cast into 8-12mm diameter copper rods, which serve as the raw material for conductor drawing.
The rod is pulled through a series of diamond dies with progressively smaller openings (from 12mm to 2.76mm) at a controlled speed (5-10m/min).
A water-soluble lubricant is applied during drawing to reduce friction and cool the copper, preventing surface scratches and ensuring a smooth finish.
After drawing, the copper wire undergoes annealing (heating to 400-500℃ in a nitrogen atmosphere and cooling gradually) to reduce internal stress and improve ductility—this step ensures the solid conductor can be bent to the minimum radius without breaking.
Low Resistivity: ≤1.72×10⁻⁸Ω·m at 20℃, ensuring efficient current transmission and minimal energy loss.
High Oxidation Resistance: Forms a thin, conductive oxide layer (Cu₂O) when exposed to air, unlike aluminum which forms a non-conductive Al₂O₃ layer that degrades performance.
Mechanical Strength: Tensile strength of ≥200MPa, allowing it to withstand the pulling forces of installation without stretching or breaking.
PVC Resin (SG-5 Grade): Provides the base structure and electrical insulation properties. SG-5 resin has a moderate polymerization degree (1000-1100), balancing rigidity and processability—critical for forming a uniform insulation layer.
Plasticizers (DOP/DINP): Di-octyl phthalate (DOP) or di-isononyl phthalate (DINP) is added to improve flexibility, preventing the insulation from becoming brittle at low temperatures (-15℃). The dosage is controlled to ensure the insulation remains rigid enough to maintain shape (Shore A hardness 65-75) while avoiding softening at high temperatures (70℃).
Flame Retardants (Al(OH)₃ + Sb₂O₃): A combination of aluminum hydroxide and antimony trioxide is used for synergistic flame retardancy. Al(OH)₃ releases water vapor when heated, cooling the insulation and diluting flammable gases; Sb₂O₃ reacts with PVC to form a protective char layer, blocking oxygen and preventing flame spread.
Stabilizers (Ca-Zn Complex): Calcium-zinc stabilizers prevent PVC degradation during extrusion (which involves temperatures up to 180℃) and long-term use. They replace toxic lead-based stabilizers, making the cable compliant with RoHS and REACH environmental standards.
Lubricants (Stearic Acid): Reduces friction between the PVC compound and extrusion equipment, ensuring a smooth insulation surface and preventing surface defects (e.g., bubbles, scratches).
Moisture Content: ≤0.1% (measured via Karl Fischer titration) to avoid bubbles in the insulation layer.
Particle Size: Passes through a 80-mesh sieve to ensure uniform melting during extrusion.
Electrical Performance: The compound’s volume resistivity is tested to be ≥1×10¹⁴Ω·cm, ensuring the final insulation layer meets the ≥100MΩ·km requirement.
Single-Core Solid Structure: The cable consists of one solid copper conductor (2.76mm diameter) surrounded by a 1.4mm thick PVC insulation layer, with no outer jacket (the insulation layer itself provides sufficient protection for indoor fixed wiring). This simple structure keeps the overall diameter compact (≈5.5mm), allowing it to fit into 16mm diameter conduits (the most common size for residential and commercial wiring).
Color Coding for Easy Identification: The PVC insulation is available in standard colors per IEC 60446 and NEC standards to simplify installation:
Brown, Black, or Red: Live (phase) wires.
Blue: Neutral wire.
Green-Yellow Striped: Ground wire.
Insulation Adhesion: The PVC insulation is extruded directly onto the copper conductor with tight adhesion (tested via a peel test: ≥5N force required to separate insulation from conductor). This prevents the insulation from sliding during stripping or installation, ensuring the conductor remains fully protected.
Uniform Thickness Control: The insulation layer’s thickness is controlled within ±0.05mm using an inline laser gauge during extrusion. This uniformity ensures no weak points (e.g., thin spots) that could lead to insulation breakdown, and it guarantees compatibility with Standard Wire stripping tools (which are calibrated for 1.4mm insulation thickness).
Copper Rod Inspection: Incoming copper rods (8-12mm diameter) are inspected for surface defects (e.g., scratches, oxidation) and purity (via spark emission spectrometry). Rods with purity <99.95% or visible defects are rejected.
Wire Drawing: The qualified copper rods are fed into a continuous wire drawing machine (model: DL-200). The machine uses 5-6 dies (from 12mm to 2.76mm) to reduce the rod diameter. A water-cooling system maintains the copper temperature below 80℃ to prevent annealing during drawing. The drawn wire is checked for diameter consistency (via a micrometer) at 100-point intervals per meter—any deviation beyond ±0.05mm triggers automatic shutdown.
Annealing: The drawn wire is fed into a continuous annealing furnace (model: AL-300) with a nitrogen atmosphere (to prevent oxidation). The furnace temperature is set to 450℃, and the wire speed is adjusted to 3-5m/min to ensure complete annealing. After annealing, the wire’s tensile strength is tested to be ≥200MPa, and its elongation at break ≥30% (per IEC 60228).
Conductor Storage: The annealed solid Copper Conductors are spooled onto wooden reels (diameter 500mm) and stored in a dry, temperature-controlled warehouse (20-25℃, 40-60% relative humidity) to prevent oxidation. Each reel is labeled with the batch number, production date, and conductor diameter.
PVC Compound Preparation: The PVC compound components (resin, plasticizers, flame retardants, etc.) are mixed in a high-speed mixer (model: SHR-500) at 100-120℃ for 10-15 minutes. The mixed compound is then cooled to 40℃ in a cold mixer to prevent premature melting. The compound is pelletized into 3-5mm diameter pellets using a granulator (model: GZ-200).
Extrusion Setup: A single-screw extruder (model: SJ-65) is used for insulation extrusion. The extruder’s temperature zones are set as follows:
Hopper zone: 140-150℃ (preheating the compound).
Compression zone: 160-170℃ (melting the compound).
Metering zone: 175-180℃ (homogenizing the molten compound).
Extrusion Process: The solid copper conductor is fed into the extruder at 5-8m/min, synchronized with the compound extrusion speed. The molten PVC is forced through the die, coating the conductor uniformly. The Insulated Wire passes through a water bath (temperature 15-20℃) to cool and solidify the insulation. A compressed air blower dries the wire surface after cooling.
Insulation Inspection: The insulated wire undergoes inline inspection:
Thickness Measurement: A laser diameter gauge (model: LDM-200) measures the insulation thickness at 50-point intervals per meter. The minimum thickness must be ≥1.2mm.
Surface Quality: A vision inspection system checks for defects (e.g., bubbles, scratches, uneven coloring). Any defective sections are marked and cut out.
Adhesion Test: Random samples are tested by peeling the insulation from the conductor—adhesion force ≥5N is required.
Electrical Testing:
Insulation Resistance Test: A megohmmeter (model: KEITHLEY 6517B) applies 1000V DC to the cable for 1 minute. The insulation resistance must be ≥100MΩ·km at 20℃.
High-Voltage Withstand Test: The cable is submerged in a saltwater bath (3% NaCl solution) and subjected to 2500V AC (phase-to-earth) and 4000V AC (phase-to-phase) for 1 minute. No breakdown or leakage current >5mA is allowed.
Conductor Resistance Test: A four-point probe tester (model: FOURPROBE FP300) measures the DC resistance of the 6mm² conductor at 20℃. The resistance must be ≤3.08Ω/km to confirm compliance with IEC 60228.
Voltage Drop Test: The cable is subjected to a 40A current (simulating typical load conditions) over a 100-meter length. The voltage drop is measured to be ≤1.2V (≤1.2% of 100V), ensuring minimal power loss in practical applications.
Mechanical Testing:
Bending Test: Samples of the cable are bent 180° around a mandrel with a diameter of 33mm (6× cable outer diameter) for 10 cycles. After testing, the insulation is inspected for cracks, and the conductor is checked for breaks—no damage indicates pass.
Abrasion Test: A weighted abrasive wheel (1kg) is rubbed against the insulation layer at 50 cycles per minute (per IEC 60811-2-1). The insulation must not be pierced or expose the conductor after 500 cycles, verifying its durability against installation friction.
Tensile Test: The insulation layer is pulled at a rate of 50mm/min using a universal testing machine (model: INSTRON 5969). The tensile strength must be ≥12MPa, and elongation at break ≥150%, ensuring the insulation can withstand installation pulling forces.
Environmental and Flame-Retardant Testing:
Temperature Cycle Test: The cable is exposed to alternating temperatures of -15℃ (4 hours) and 70℃ (4 hours) for 10 cycles. After testing, the insulation resistance remains ≥80MΩ·km, and no cracks or deformation are observed.
Moisture Resistance Test: The cable is immersed in a 25℃ water bath (conductivity ≤5μS/cm) for 1000 hours. The insulation resistance is measured weekly, remaining ≥80MΩ·km throughout the test to confirm moisture resistance.
Flame-Retardant Test: Conducted in accordance with IEC 60332-1-2: the cable is vertically mounted and exposed to a 1000℃ flame for 1 minute. After flame removal, the cable self-extinguishes within 30 seconds, and no flaming drips are produced.
Certification: After passing all tests, the cable is certified to meet IEC 60227-1, VDE 0250, and RoHS/REACH standards. A Certificate of Compliance (CoC) is issued for each batch, including test results, batch number, and manufacturing date. The cable is also marked with compliance logos (IEC, VDE) on the insulation layer at 1-meter intervals for easy identification.
Cutting Setup: The insulated cable (continuous length) is fed into an automated cutting machine (model: CUT-600) equipped with a precision blade and length-measuring encoder. The machine is programmed to cut the cable into standard lengths based on customer requirements or industry norms—common lengths include 50m, 100m, 200m, and 500m. The cutting speed is synchronized with the cable feed rate (3-5m/min) to ensure clean, square cuts without damaging the insulation or conductor.
Length Verification: Each cut cable length is verified using a laser distance meter (accuracy ±1mm) to ensure compliance with the ordered length. For example, a 100m cable must measure 100±0.5m—any length outside this range is rejected. The machine automatically discards defective lengths (e.g., cables with insulation defects identified during inline inspection) and records the number of valid cuts per batch for inventory tracking.
Spooling Process: The cut cables are wound onto spools using an automated spooling machine (model: SPOOL-800). Two types of spools are used based on customer needs:
Cardboard Spools: For standard orders, made of high-density cardboard (thickness 5mm) with a central core (diameter 100mm) and flanges (diameter 300mm for 100m cables). Cardboard spools are lightweight (≈500g for 100m spools) and recyclable, suitable for indoor storage and moderate handling.
Plastic Spools: For heavy-duty or humid-environment orders, made of high-density polyethylene (HDPE) with UV stabilization. Plastic spools (≈1.2kg for 100m spools) are water-resistant and impact-resistant, ideal for construction sites or industrial storage.
Spool Labeling: Each spool is labeled with a durable, weather-resistant sticker containing comprehensive traceability and specification information:
Product Details: Cable type (H07V-U), conductor size (6mm²), rated voltage (450/750V), conductor material (solid copper), insulation material (PVC), and length.
Compliance Information: Certifications (IEC 60227-1, VDE 0250, RoHS), batch number, manufacturing date, and production facility code.
Safety Warnings: “For fixed wiring only,” “Avoid exposure to open flame,” “Operating temperature: -15℃ to 70℃,” “Minimum bending radius: 33mm.”
Logistics Data: Net weight (cable + spool), gross weight, and spool dimensions (diameter × width).
Final Inspection: Each spool undergoes a visual check to confirm:
The cable is wound evenly with no tangling or insulation damage.
The label is accurate, legible, and securely attached.
The spool (cardboard/plastic) is intact with no cracks or deformation.
Corrugated Cartons: Small bulk orders (10-50 spools) are packed into double-walled corrugated cartons (bursting strength ≥200kPa). The cartons are lined with foam inserts (thickness 10mm) to separate spools and prevent collision damage—each insert has custom-cut slots to hold spools securely. A single carton holds a maximum of 20 spools (100m each) to keep the gross weight ≤30kg, ensuring easy manual handling.
Wooden Crates: Large bulk orders (50+ spools) or international shipments are packed into plywood crates (thickness 12mm) treated per ISPM 15 standards (heat treatment at 56℃ for 30 minutes) to prevent pest infestation. Inside the crate, spools are secured with steel strapping (width 16mm) attached to wooden battens, and a waterproof plastic liner (thickness 0.1mm) is added to protect against sea moisture (critical for ocean freight). The crate’s lid is sealed with bolts to avoid accidental opening during transit.
Palletization: For industrial-scale orders (100+ spools), spools (in cartons or crates) are placed on wooden or plastic pallets (size 1200×1000mm). The pallets are wrapped with two layers of stretch film (thickness 0.02mm) to hold units together, and four steel straps (tensile strength ≥500kg) are added to secure the load to the pallet. Palletization allows for forklift handling, reducing loading/unloading time by 50% compared to manual handling and minimizing the risk of spool damage.
Outer Package Labels: Cartons, crates, and pallets are labeled with:
Product Summary: Total number of spools, cable length per spool, and total weight (net/gross).
Compliance Symbols: International shipping symbols (e.g., “Keep Dry,” “Fragile,” “Do Not Stack Above 2 Layers”) and certification logos (IEC, VDE, RoHS).
Logistics Details: Sender address, recipient address, tracking number, carrier name, and destination port/airport (for international shipments).
Supporting Documentation: Each shipment includes a waterproof envelope attached to the outer package, containing:
Packing List: Itemized list of spools (batch numbers, lengths, colors) and total quantities, signed by the warehouse supervisor.
Certificate of Compliance (CoC): Confirms the cable meets IEC 60227-1, VDE 0250, and RoHS standards, with key test results (insulation resistance, flame-retardant performance) for the batch.
Safety Data Sheet (SDS): Details the PVC and copper materials, including hazard identification, first-aid measures, handling/storage guidelines, and environmental disposal requirements.
Installation Guide: Simplified instructions for cable handling (e.g., “Avoid over-bending”), stripping (recommended tools: 6mm² wire strippers), and termination (torque specifications: 1.2-1.5N·m for copper terminals).
Road Transport: The primary mode for domestic shipments (within a country or region) and short-distance cross-border deliveries (e.g., EU countries, China-Southeast Asia). Road transport uses enclosed trucks equipped with:
Air Suspension Systems: Reduce vibration to ≤0.5g, preventing cable tangling or insulation damage during transit—critical for solid-core cables that are less flexible than stranded alternatives.
Climate Control: For shipments to extreme temperature regions (e.g., -20℃ in winter, 40℃ in summer), trucks are fitted with heating/cooling units to maintain the cable’s operating temperature range (-15℃ to 70℃).
Secure Loading: Pallets or crates are secured with load bars and ratchet straps to prevent shifting—gaps between packages are filled with dunnage (wooden blocks, foam padding) to minimize movement.
Sea Transport: Preferred for large-volume international shipments (e.g., Asia to Europe, North America to Australia). Sea transport is cost-effective for heavy cargo (e.g., 10+ pallets) but has longer lead times (2-6 weeks). To protect against sea-related risks:
Moisture Protection: Crates are lined with waterproof plastic and include 50g desiccant packs per cubic meter of volume to absorb condensation. Pallets are wrapped with UV-stabilized stretch film to prevent rain damage during port handling.
Container Selection: Shipments are loaded into closed 20-foot or 40-foot shipping containers (rather than open-top containers) to avoid exposure to salt spray and seawater. Containers are inspected for holes or rust before loading to ensure a dry environment.
Cargo Securing: Inside the container, pallets are secured with container twist locks and steel wire ropes to prevent movement during rough sea conditions (e.g., wave-induced tilting).
Air Transport: Reserved for urgent orders (e.g., emergency industrial repairs, last-minute project needs) or small-volume international shipments (≤50 spools). Air transport offers fast delivery (3-7 days globally) but is more expensive (3-5 times the cost of sea transport). Key considerations for air transport:
Weight Restrictions: Packages are limited to 30kg per piece (per IATA regulations), so spools are packed in lightweight cardboard sleeves rather than wooden crates. The total weight of a 50-spool (100m each) air shipment is ≤15kg, including packaging.
Safety Compliance: The cable is classified as “non-hazardous” (per IATA DGR) due to its flame-retardant insulation and non-toxic materials. The SDS and CoC are provided to airlines to confirm compliance with air cargo safety standards.
Security Screening: Shipments undergo X-ray screening and may require additional security documentation (e.g., shipper’s declaration of security) to meet international aviation security requirements.
Rail Transport: A viable option for long-distance domestic or cross-border shipments within regions with well-developed rail networks (e.g., China, Europe, North America). Rail transport balances cost (20-30% cheaper than air transport) and speed (2-3 times faster than sea transport) and is ideal for bulk palletized orders. Railcars are enclosed and equipped with stable flooring to prevent package movement, and shipments are protected from weather via railcar covers.
Vibration Mitigation: Packages are padded with foam or bubble wrap (thickness 5mm) to absorb shocks from road/rail vibrations or air turbulence. For sea transport, crates are placed on rubber mats to reduce the impact of wave motion—this reduces the risk of insulation cracking by 80% compared to unprotected shipments.
Temperature Monitoring: Shipments to extreme climate zones (e.g., Siberia, Middle East) include temperature data loggers (model: EL-USB-2) that record internal package temperatures every 30 minutes. If temperatures exceed -15℃ or 70℃, the logger triggers an alert, and the carrier is notified to reroute the shipment to a climate-controlled facility.
Moisture Control: All outer packaging is water-resistant (wax-coated cartons, plastic-lined crates), and desiccant packs are included in sealed packages. For sea transport, a humidity indicator card (ranging from 10-90% RH) is placed inside each crate—if the card shows RH >60%, the shipment is inspected upon arrival for insulation moisture damage.
Handling Training: Carriers and logistics partners receive training on proper handling of solid-core Copper Cables, including:
Avoiding dropping packages (maximum drop height: 30cm for individual spools, 10cm for pallets).
Using forklifts with soft rubber forks to prevent crate/pallet damage.
Storing packages in dry, well-ventilated areas (not on the ground or near water sources) during transit stops.
Order Verification: Upon receiving an order (via online portal, email, or sales representative), the customer service team verifies key details within 24 hours:
Product specifications (6mm² cross-section, 450/750V, PVC insulation, spool material: cardboard/plastic).
Quantity, length per spool (standard/custom), and insulation color (brown/black/blue/green-yellow).
Delivery address, contact person, phone number, and preferred delivery timeline (standard/expedited).
Special requirements (e.g., custom labeling, additional documentation for customs, weekend delivery).
Inventory Check: The warehouse team uses an enterprise resource planning (ERP) system to check stock levels for the verified specifications. If the cable is in stock (standard lengths/colors), the order is assigned a “ready-to-ship” status, and the warehouse prepares for picking within 4 hours of order confirmation. If the cable is out of stock (e.g., custom lengths, rare colors like green-yellow striped insulation), the production team is notified to schedule manufacturing. The customer is informed of the production lead time (typically 7–10 days for standard customizations, 12–15 days for special insulation formulations) via email, with a detailed timeline including production start/end dates and estimated shipping date.
Picking and Preparation: For in-stock orders, warehouse staff use barcode scanners to locate the correct spools in the inventory. Each spool is scanned to verify its batch number, length, and color against the order, ensuring no mismatches. The spools are then moved to the packaging station, where they are wrapped in PE film (with desiccant packs for plastic spools) and placed into cardboard sleeves. For bulk orders, the packaged spools are consolidated into cartons or crates, with foam inserts added to prevent movement. The packaging station is equipped with a weight scale to verify the gross weight of each package, ensuring alignment with the packing list.
Shipping Coordination: The logistics team reviews the order details (quantity, destination, delivery timeline) to select the optimal transport mode. For domestic urgent orders (e.g., 24-hour delivery), a local courier service (e.g., DHL Express, FedEx) is arranged; for bulk domestic orders, a contracted road transport company is assigned. For international orders, the team coordinates with freight forwarders to book sea or air cargo space, ensuring the shipment aligns with the customer’s delivery timeline. The customer is provided with a tracking number and a link to the carrier’s tracking portal within 2 hours of shipment dispatch, along with a copy of the waybill and packing list.
Delivery Confirmation: Once the carrier confirms delivery, the logistics team updates the order status in the ERP system. The customer service team follows up with the customer via email or phone within 48 hours to confirm receipt of the shipment and address any post-delivery concerns (e.g., damaged packaging, missing spools). A satisfaction survey is sent to the customer 1 week after delivery to gather feedback on the order fulfillment process.
In-Stock Orders: Standard in-stock orders (standard lengths: 50m/100m/200m; common colors: brown/black/blue) are processed and shipped within 1–2 business days. Domestic road delivery lead times vary by distance:
Short-distance (≤200km): 1–2 business days.
Medium-distance (200–500km): 2–3 business days.
Long-distance (>500km): 3–5 business days.
Custom Orders: Custom orders require additional production time, with lead times determined by the customization complexity:
Custom lengths (e.g., 300m, 400m): 7–10 business days (production) + shipping time.
Special insulation colors (e.g., green-yellow striped, red): 10–12 business days (including color matching) + shipping time.
Modified insulation formulations (e.g., enhanced flame-retardant, low-smoke zero-halogen): 12–15 business days (material testing + production) + shipping time.
Delivery Windows: For domestic road transport, customers can select preferred delivery time windows to ensure someone is available to receive the shipment:
Morning window: 9:00 AM–12:00 PM.
Afternoon window: 1:00 PM–5:00 PM.
Evening window (upon request): 5:00 PM–8:00 PM.
Documentation Preparation: The logistics team prepares all required customs documents with high accuracy to avoid discrepancies:
Commercial Invoice: Details the product description (H07V-U solid single core copper cable, 6mm², 450/750V), quantity, unit price, total value, and country of origin (e.g., “Made in China,” “Made in Germany”). The invoice includes the HS code for insulated copper cables (7311.00) to ensure correct tariff classification.
Certificate of Origin (CO): Issued by a chamber of commerce or authorized body, confirming the cable’s manufacturing location. This document helps customers qualify for preferential tariffs under trade agreements (e.g., EU-Mercosur, USMCA), reducing import costs.
ISPM 15 Certificate: For shipments using wooden crates, this certificate verifies that the wood has been heat-treated to meet international phytosanitary standards, eliminating the need for fumigation at the destination port.
Customs Declaration Form: Completed in the destination country’s official language (e.g., Spanish for Mexico, French for Canada), including details on the shipment’s weight, dimensions, and purpose (e.g., “for industrial use,” “for resale”).
Regulatory Compliance Check: Before shipping, the compliance team verifies that the cable meets the destination country’s specific electrical standards and regulations:
For the EU: Ensures the cable has CE marking and complies with IEC 60227-1 and RoHS 2.0 (restriction of hazardous substances).
For the U.S.: Confirms compliance with NEC 310 and UL 44 (standard for rubber-insulated wires and cables), and provides a UL certification copy if required.
For Southeast Asia: Checks compliance with local standards (e.g., TISI for Thailand, SIRIM for Malaysia) and provides test reports from accredited local laboratories if requested.
Customs Broker Collaboration: The supplier partners with local customs brokers in key international markets (e.g., Kuehne + Nagel in Europe, DHL Global Forwarding in North America) to handle clearance procedures. Brokers have in-depth knowledge of local customs regulations and communicate directly with authorities to resolve issues such as document mismatches or tariff disputes. For example, if a shipment to Brazil is held due to missing documentation, the broker works with the supplier to submit the required files within 24 hours, reducing clearance time from 7–10 days to 2–3 days.
Online Sample Request Portal: A dedicated section on the supplier’s website allows customers to select specifications (length, insulation color, spool material) and submit their request by filling out a form with contact details and intended application.
Direct Contact: Customers can reach out to the sales team via email or phone, specifying their sample requirements (e.g., “1-meter H07V-U 6mm² cable with green-yellow insulation for grounding tests”).
Product Specifications: Conductor size (6mm²), rated voltage (450/750V), insulation color, and sample length (standard sample lengths: 1–5 meters; custom lengths up to 10 meters available upon request).
Intended Application: Brief description of the use case (e.g., “for industrial motor wiring,” “for commercial building grounding systems”) to help the supplier confirm the sample’s suitability.
Delivery Details: Recipient name, company name, delivery address, contact phone number, and preferred delivery method (standard vs. expedited).
Packaging: Each sample is coiled neatly (to avoid tangling) and secured with a cable tie, then placed in a transparent plastic bag labeled with the sample’s specifications (e.g., “H07V-U, 6mm², 450/750V, green-yellow insulation, 2m”). For international samples, the plastic bag is placed in a small corrugated envelope with a “Fragile” label and waterproof coating to prevent damage during transit.
Labeling: A durable sticker is attached to the plastic bag, including:
Sample ID number (for traceability to the production batch).
Key specifications: Conductor material (99.95% solid copper), insulation thickness (1.4mm), minimum bending radius (33mm), and operating temperature range (-15℃ to 70℃).
Compliance logos: IEC, VDE, RoHS.
Supporting Documentation: Each sample is accompanied by a “Sample Information Packet” containing:
Sample Certificate: Confirms the sample is representative of bulk production, with key test results (insulation resistance: ≥100MΩ·km, flame-retardant performance: passes IEC 60332-1-2).
Technical Datasheet: Detailed specifications of the H07V-U 6mm² cable, including current-carrying capacity, conductor resistance, and mechanical properties.
Application Guide: Recommendations for using the cable in specific scenarios (e.g., “ideal for 5–15kW motor wiring,” “suitable for 7–22kW EV charging piles”).
Contact Card: Technical support contact details (phone number, email) for questions during sample evaluation.
Technical Consultation: A dedicated technical representative is assigned to each sample request, available to answer questions via phone or email. The representative explains the sample’s features (e.g., “the solid copper conductor’s low resistance reduces energy loss by 5–8% compared to Stranded Conductors”) and how they align with the customer’s application needs. For example, if a customer is evaluating the sample for EV charging piles, the representative provides data on the cable’s current-carrying capacity at different temperatures to confirm it can handle the charging pile’s 32–50A load.
Testing Guidance: If customers wish to conduct in-house tests, the supplier provides a “Sample Testing Guide” with step-by-step instructions for common tests:
Conductivity Test: Use a multimeter to measure the sample’s resistance (should be ≤3.08Ω/km at 20℃).
Insulation Resistance Test: Use a 1000V megohmmeter to check insulation resistance (≥100MΩ·km indicates pass).
Bending Test: Manually bend the sample 180° around a 33mm diameter mandrel 10 times—no insulation cracking or conductor breakage confirms good flexibility.
Feedback Integration: After the evaluation period (typically 1–2 weeks), the technical representative follows up with the customer to collect feedback. If the customer has concerns (e.g., “insulation is too rigid for our installation”), the supplier offers solutions such as adjusting the PVC plasticizer ratio for custom orders. Feedback is documented in the ERP system and shared with the production team to improve product quality or tailor offerings to customer needs.
Detailed Installation Manual: Each order includes a 20-page installation manual (available in multiple languages, including English, Spanish, French, and Chinese) with:
Pre-Installation Checks: Guidelines for inspecting the cable before installation (e.g., “check for insulation scratches,” “verify spool label matches order specifications”) and preparing tools (e.g., 6mm² wire strippers, torque wrench, cable cutters).
Handling Instructions: Best practices for unspooling the cable (e.g., “use a spool holder to avoid tangling,” “do not drag the cable across rough surfaces”) and storing unused cable (e.g., “keep in dry, cool area,” “wrap leftover cable tightly on spool”).
Routing and Bending Guidelines: Step-by-step instructions for routing the cable through conduits, wall cavities, and cable trays, including diagrams of the minimum bending radius (33mm) and warnings about over-bending (which can crack insulation).
Termination Procedures: Detailed steps for stripping the insulation (recommended stripping length: 8–10mm) and connecting the cable to terminals, wire nuts, or circuit breakers. The manual includes torque specifications (1.2–1.5N·m for 6mm² copper terminals) to ensure tight connections that prevent overheating.
Safety Precautions: Instructions for working with live circuits (e.g., “turn off power before installation,” “use insulated tools”) and complying with local electrical codes (e.g., NEC 310 in the U.S., GB 50217 in China).
On-Site Training: For large-scale projects (e.g., industrial factories, commercial building complexes), the supplier offers on-site training sessions for electricians and installation teams. The training is led by certified technical instructors and includes:
Classroom Session: Overview of the cable’s specifications, performance features, and installation requirements (1–2 hours).
Hands-On Demonstration: Live demonstration of unspooling, routing, stripping, and termination, with instructors providing feedback on technique (2–3 hours).
Q&A Session: Opportunity for installers to ask project-specific questions (e.g., “how to route the cable around existing pipes,” “what terminals work best for this cable”).
On-Site Consultation: For complex installations or troubleshooting, the supplier dispatches technical experts to the customer’s site within 24–48 hours of request (domestic) or 48–72 hours (international). Experts provide real-time support, including:
Installation Audits: Inspecting ongoing installations to ensure compliance with the manual and local codes (e.g., checking bending radius, verifying termination torque).
Troubleshooting: Identifying and resolving issues such as high resistance at connections (caused by loose terminals) or insulation damage (from rough conduit edges).
Compatibility Checks: Verifying that the cable is compatible with existing equipment (e.g., old circuit breakers, vintage industrial motors) and recommending adapters or modifications if needed.
Warranty Terms: The standard warranty period is 12–24 months from the date of delivery, depending on the application environment:
12 months for harsh industrial environments (exposed to vibration, temperature fluctuations, or minor chemical exposure).
24 months for residential/commercial indoor environments (stable temperature, no exposure to harsh conditions).
Hongtai Cable Technology Co., Ltd
Correo electrónico: export@qlcables.com
sales@qlcables.com
Tel/WhatsApp:+86-18032066271
Agregue: Zona de desarrollo industrial de Xiaokou, condado de Ningjin, ciudad de Xingtai, provincia de Hebei, China
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