Voltage Ratings: Available in two primary voltage classes to cover diverse distribution needs:
Low-Voltage (LV): 0.6/1kV (phase-to-earth: 0.6kV, phase-to-phase: 1kV), designed for residential and small commercial distribution (e.g., powering neighborhoods or small industrial units).
Medium-Voltage (MV): 10kV, 22kV, and 33kV, used for regional power transmission (e.g., connecting rural substations to towns or industrial parks).
Current-Carrying Capacity: Determined by Conductor Material, insulation type, and installation environment (ambient temperature, wind speed):
Conductor Material | Voltage Class | Ambient Temp (40°C) | Wind Speed (0.5m/s) | Continuous Current | Peak Current (30min) |
Pure Aluminum (AA 1350-H19) | LV (0.6/1kV) | 40°C | 0.5m/s | 220A | 260A |
Aluminum Alloy (AA 6201-T81) | MV (10kV) | 40°C | 0.5m/s | 180A | 215A |
This capacity enables a 10kV 70mm² ABC to power 500-800 rural households or a 200-hectare industrial park, supporting loads like 5kW residential HVAC systems and 15kW industrial motors. |
Insulation Resistance: Measured at 70°C using a 2500V megohmmeter, XLPE insulation exhibits a minimum resistance of 1000MΩ·km. This high resistance minimizes leakage current (≤0.1mA/km at rated voltage), reducing energy loss and the risk of electric shock in humid conditions.
Short-Circuit Withstand Capacity: The 70mm² conductor withstands short-circuit currents of:
LV: 80kA for 1 second (phase-to-phase fault)
MV: 60kA for 1 second (phase-to-earth fault)
Tensile Strength:
Conductor: Pure aluminum (AA 1350-H19) has a tensile strength of 120MPa; aluminum alloy (AA 6201-T81) reaches 290MPa, enhancing resistance to wind-induced tension.
Messenger Wire: Galvanized steel messenger (common in MV ABC) has a tensile strength of 1200MPa, while aluminum alloy messenger (LV ABC) offers 320MPa. The messenger bears 80% of the cable’s mechanical load, enabling spans of up to 50 meters between poles.
Bending Radius: Minimum bending radius of 16× the cable’s outer diameter (e.g., 240mm for a 15mm outer diameter LV ABC). This allows safe installation around utility poles without insulation cracking.
Temperature Range:
XLPE Insulation: -40°C to 90°C (long-term), -50°C to 130°C (short-term), adapting to polar winters and desert summers.
EPR Insulation: -60°C to 105°C (long-term), ideal for extreme cold regions (e.g., northern Canada).
Weather Resistance:
UV Resistance: XLPE insulation with 2% carbon black additive resists 2000 hours of UV exposure (per IEC 60811-4-1) with no significant degradation.
Water Resistance: Water absorption ≤0.5% by weight (24-hour immersion at 23°C), preventing moisture ingress.
Corrosion Resistance: Aluminum Conductors form a protective oxide layer (Al₂O₃) that resists rust; galvanized steel messengers have a zinc coating (85μm thickness) for corrosion protection in coastal areas.
Flame Retardancy: Meets IEC 60332-1 (vertical flame test), self-extinguishing within 60 seconds of ignition—critical for areas prone to wildfires (e.g., Australian rural regions).
Pure Aluminum (AA 1350-H19):
Advantages: High conductivity (58MS/m at 20°C), lightweight (density 2.7g/cm³), and low cost. Ideal for LV ABC in low-wind areas (e.g., suburban neighborhoods) where mechanical stress is minimal.
Stranding Design: 70mm² pure aluminum conductors consist of 37 strands of 1.5mm diameter wire, twisted in a Class 2 configuration (IEC 60228). This stranding enhances Flexibility during installation and reduces fatigue from minor wind vibration.
Aluminum Alloy (AA 6201-T81):
Advantages: 2.4× higher tensile strength than pure aluminum (290MPa vs. 120MPa) and 90% of its conductivity (52MS/m). Used in MV ABC or LV ABC in high-wind areas (e.g., coastal regions), where wind-induced tension is significant.
Stranding Design: 70mm² alloy conductors use 19 strands of 2.1mm diameter wire, providing better mechanical stability for long spans (40-50 meters).
Cross-Linked Polyethylene (XLPE):
Composition: HDPE base resin (density 0.941-0.965g/cm³) cross-linked with dicumyl peroxide (2.0-2.5% by weight) to form a three-dimensional molecular network. Additives include 2% carbon black (UV stabilizer), 0.3% antioxidant (hindered phenol), and 0.5% flame retardant (magnesium hydroxide).
Performance: Excellent dielectric strength (20kV/mm), thermal stability (90°C long-term), and resistance to oil, ozone, and industrial pollutants. Accounts for 80% of 70mm² ABC insulation due to its versatility.
Thickness: 1.8mm (LV), 2.5mm (10kV MV), 3.2mm (33kV MV) — thicker insulation for higher voltages to prevent breakdown.
Ethylene Propylene Rubber (EPR):
Composition: Ethylene-propylene monomer (70:30 ratio) with carbon black (3%), sulfur vulcanizing agent (1.5%), and antioxidant (0.5%).
Performance: Superior low-temperature flexibility (-60°C) and resistance to water treeing (a common cause of insulation failure in humid environments). Used in 20% of 70mm² ABC, primarily in cold regions (e.g., Siberia) or high-humidity areas (e.g., tropical rainforests).
Messenger Wire:
Galvanized Steel: Used in MV ABC (10kV+), offering 1200MPa tensile strength. Zinc coating (85μm) resists corrosion in coastal areas. Typically 16mm² to 25mm² in cross-section, matching the cable’s load-bearing needs.
Aluminum Alloy: Used in LV ABC, 320MPa tensile strength and lightweight (same density as conductors). 25mm² to 35mm² cross-section, avoiding additional weight that could strain utility poles.
Bundling Materials:
Polypropylene Tape: helically wrapped around the Insulated Conductors to hold them together. Resists UV radiation and has a tensile strength of 25MPa, ensuring the bundle remains intact during installation.
Extruded Sheath (Optional): Some MV ABC variants add a 1.0mm-thick HDPE sheath over the bundled conductors for extra protection against bird pecking (a common issue in rural areas) or falling debris.
Wire Drawing: Aluminum rods (9.5mm diameter, AA 1350 or AA 6201) are pulled through diamond dies (room temperature) to reduce diameter to 1.5mm (pure aluminum) or 2.1mm (alloy). Laser diameter gauges (accuracy ±0.001mm) monitor wire size—variations beyond ±0.01mm are rejected.
Stranding: Drawn wires are fed into a rotary stranding machine (speed 150-200rpm) to form 70mm² conductors. For pure aluminum, 37 strands are twisted with a lay length of 12-16× conductor diameter (18-24mm); for alloy, 19 strands use a lay length of 14-18× diameter (29.4-37.8mm). Tension controllers ensure uniform strand tension, avoiding loose wires.
Annealing (Pure Aluminum Only): Pure aluminum conductors are annealed in a nitrogen-filled furnace (350-400°C) to reduce hardness (from 80HV to 40HV), enhancing flexibility for installation. Alloy conductors skip this step, as their strength relies on cold working.
XLPE Insulation Process:
Compounding: HDPE resin, peroxide, carbon black, and additives are mixed in a twin-screw extruder (barrel temperature 120-160°C) to form a homogeneous compound. The compound is pelletized and stored in a dry environment (relative humidity ≤50%) to prevent moisture absorption.
Extrusion: Conductors are fed into a single-screw extruder (barrel temperature 160-190°C) where XLPE compound is extruded over the conductor. A cross-head die (custom-designed for insulation thickness) ensures uniform coverage. Laser diameter gauges adjust extruder speed in real time to maintain thickness tolerance (±0.1mm).
Cross-Linking: Insulated conductors enter a continuous vulcanization (CV) tube (20-30m long) heated to 200-220°C with high-pressure nitrogen (1.5-2.0MPa). This activates peroxide cross-linking, transforming XLPE into a thermoset material with 95%+ cross-linking degree.
Cooling: Conductors are cooled in a water bath (20-30°C) to stabilize insulation, preventing thermal shock.
EPR Insulation Process:
Rubber Mixing: EPR monomer, carbon black, sulfur, and additives are mixed in a Banbury mixer (temperature 100-120°C) to form a rubber compound.
Extrusion: The compound is extruded over the conductor using a rubber extruder (barrel temperature 80-100°C) to avoid premature vulcanization.
Vulcanization: Insulated conductors pass through a steam-heated vulcanization tube (160-180°C) for 10-15 minutes to cure the rubber.
Bundling: Insulated conductors (3 phase + 1 neutral for 3-phase systems) are fed into a cabling machine (speed 50-80rpm) and wrapped with polypropylene tape (50mm width, 0.1mm thickness) at a lay length of 300-400mm. The tape holds the conductors in a compact bundle, reducing wind resistance during operation.
Messenger Integration: For ABC with integrated messengers, the messenger wire is fed into the cabling machine alongside the bundled conductors. It is positioned parallel to the bundle and secured with additional polypropylene tape (2 layers) to ensure mechanical stability. For MV ABC with extruded sheaths, the bundled conductors and messenger are fed into a second extruder to apply the HDPE sheath.
Electrical Tests:
Dielectric Strength: Immersed in water for 1 hour, then subjected to 2.5× rated voltage for 1 minute (no breakdown allowed).
Insulation Resistance: Measured at 70°C (≥1000MΩ·km).
Conductor Resistance: Measured at 20°C (≤0.017Ω/m for pure aluminum, ≤0.019Ω/m for alloy).
Mechanical Tests:
Tensile Test: Conductor and messenger tensile strength tested per IEC 60811-1-1.
Bending Test: 10 cycles around mandrel (16× outer diameter) with no insulation cracking.
Impact Test: 50J impact on insulation (per IEC 60811-1-3) with no conductor exposure.
Environmental Tests:
UV Aging: 2000 hours of UV exposure (IEC 60811-4-1) with ≤20% insulation tensile strength loss.
Water Absorption: 24-hour immersion (≤0.5% weight gain).
Corrosion Test: 1000 hours of salt spray (IEC 60068-2-11) with no visible corrosion on messenger.
Dimensional Inspection: Conductor cross-section, insulation thickness, and bundle outer diameter measured at 10 random points (tolerance ±5%).
Application Context: Rural areas have sparse populations, long distances between buildings, and limited infrastructure budgets. Overhead lines are the most cost-effective option, but traditional bare conductors pose safety risks to livestock and farmers.
ABC Advantages:
Long Spans: Integrated messenger enables 40-50m spans between poles, reducing the number of poles needed by 30% compared to bare conductors (which require 25-30m spans). This cuts land acquisition and installation costs by 25-30%.
Safety: Insulated conductors eliminate the risk of electric shock to livestock (e.g., cows grazing near lines) and reduce wildfire risks from conductor contact with dry grass.
Weather Resistance: XLPE insulation withstands rural weather extremes (e.g., -30°C winters in Canadian prairies, 45°C summers in Australian outback) with minimal maintenance.
Installation Example: A 10kV 70mm² ABC (Aluminum Alloy Conductor, galvanized steel messenger) powers a 500-household rural community in Kenya. The cable spans 45m between concrete poles, covering 15km of farmland. Its insulated design prevents faults from tall crops (e.g., maize) and reduces outages by 40% compared to the previous bare conductor system.
Application Context: Suburban neighborhoods have low-rise housing, wide road corridors, and moderate power demands (2-5kW per household). Grid reliability is critical, as outages disrupt daily life (e.g., HVAC, EV charging).
ABC Advantages:
Fault Reduction: Insulated conductors eliminate phase-to-phase faults from tree branches (a common issue in suburban areas with mature trees), reducing outages by 50% compared to bare conductors.
Easy Installation: Lightweight design (70mm² pure aluminum ABC weighs ~0.25kg/m) simplifies installation using standard overhead line equipment (e.g., pole-mounted winches), reducing labor time by 30% compared to heavier Underground Cables.
Aesthetic Appeal: The bundled, black XLPE insulation has a neat appearance, blending with suburban landscapes better than bare conductors—critical for neighborhoods with strict aesthetic guidelines.
Installation Example: A suburban neighborhood in Texas (USA) with 300 homes uses 0.6/1kV 70mm² ABC (pure aluminum conductor, aluminum alloy messenger) for power distribution. The cable is installed along existing utility poles, spanning 40m between poles. Its insulated design prevents faults from oak tree branches (common in the area) and supports EV charging stations (2kW per home), with the 220A current capacity easily handling peak demand (e.g., evening HVAC use).
Application Context: Older urban areas often have aging bare overhead conductors (installed 30+ years ago) that are prone to faults, pose safety risks to pedestrians, and disrupt traffic during maintenance. Underground cabling is often impractical due to narrow streets, existing pipelines, or historical infrastructure.
ABC Advantages:
Minimal Disruption: ABC can be installed on existing utility poles, avoiding the need for road digging (which disrupts traffic and businesses). Installation is completed in 1-2 days per street, compared to 1-2 weeks for underground cabling.
Safety: Insulated conductors eliminate the risk of electric shock to pedestrians (e.g., from falling conductors) and reduce fire risks in dense urban areas (e.g., near wooden buildings).
Space Efficiency: The bundled design reduces the number of conductors per pole—one 70mm² ABC (3 phase + 1 neutral) replaces four separate bare conductors, freeing up pole space for streetlights or 5G antennas.
Installation Example: A historic district in London (UK) with narrow streets uses 10kV 70mm² ABC (aluminum alloy conductor, galvanized steel messenger) to replace 40-year-old bare conductors. The cable is installed on existing cast-iron poles, spanning 35m between poles. Its compact design avoids damage to historical buildings, and the insulated conductors reduce outages by 60% compared to the previous system—critical for powering small businesses (e.g., cafes, shops) that rely on uninterrupted electricity.
Application Context: Industrial parks and commercial districts (e.g., shopping malls, logistics centers) have high power demands (10-20kW per unit) and require reliable power for machinery, refrigeration, and lighting. Overhead lines are preferred for their ability to cover large areas (e.g., 100-hectare industrial parks) at low cost.
ABC Advantages:
High Load Capacity: The 70mm² conductor’s 180-220A current capacity supports heavy loads, such as 15kW industrial motors (common in manufacturing plants) or 10kW refrigeration systems (in logistics centers).
Chemical Resistance: XLPE insulation resists industrial pollutants (e.g., oil, dust) and commercial cleaning chemicals, ensuring a service life of 25+ years.
Easy Maintenance: The bundled design allows for quick fault identification—each phase conductor is color-coded (red, yellow, blue), making it easy for technicians to locate and repair issues without shutting down the entire system.
Installation Example: A 200-hectare industrial park in Guangzhou (China) uses 10kV 70mm² ABC (aluminum alloy conductor, galvanized steel messenger) to power 50 manufacturing units. The cable spans 45m between concrete poles, with each pole serving 2-3 units. Its XLPE insulation resists oil spills (common in the park’s automotive factories) and supports peak demand (e.g., morning machinery startup) with the 180A current capacity—ensuring no production downtime due to power shortages.
Reel Specifications:
Size: Reel diameter is 3.0-3.5 meters (to avoid bending the cable below its minimum radius of 16× outer diameter). A 3.0-meter reel holds 500 meters of 70mm² LV ABC (outer diameter 15mm) or 400 meters of 70mm² MV ABC (outer diameter 18mm). The reel width is 1.2-1.5 meters, with a central core diameter of 0.6 meters to facilitate loading/unloading.
Material Options:
Steel Reels: Used for heavy-duty transportation (e.g., truck shipping over rough terrain) or long-term storage. Constructed from galvanized steel (thickness 6-8mm), they resist corrosion, impact, and deformation—critical for protecting the XLPE insulation from scratches during loading with cranes. Steel reels are reusable, and we offer a “reel return program” (customers return undamaged reels for a 15% credit on their next order).
Wooden Reels: For lighter loads (500-meter LV ABC) or rail shipping, wooden reels (pine or birch) are used. They are treated with anti-mold chemicals (per ISPM 15) to prevent fungal growth (which could transfer moisture to the insulation) and lined with a 0.2mm PE film to create a moisture barrier.
Protective Layers:
Inner PE Film: A 0.15mm-thick PE film is tightly wrapped around the coiled cable to seal out dust and prevent direct contact with the reel (avoiding scratches to the XLPE insulation, which could compromise dielectric strength).
Waterproof Kraft Paper: For outdoor storage or rainy-season shipping, a layer of wax-impregnated kraft paper (thickness 0.1mm) is applied over the PE film. This paper repels rainwater and prevents condensation, which could cause insulation degradation (e.g., water treeing in humid conditions).
Outer PP Woven Bag: A heavy-duty polypropylene (PP) woven bag (weight 200g/m²) is slipped over the reel, with drawstrings at both ends. The bag resists tearing during crane lifting and provides UV protection (preventing XLPE insulation from aging due to sunlight exposure if stored outdoors temporarily).
Labeling: Each reel features two weather-resistant labels (one on the reel face, one on the side) with permanent ink, including:
Cable details: Model (70mm² ABC), voltage class (0.6/1kV/10kV), conductor material (AA 1350/AA 6201), insulation type (XLPE/EPR), length (e.g., 500m), batch number, manufacturing date, and compliance marks (IEC 60502-2, ANSI C135.1).
Handling instructions: “Use Crane with Soft Nylon Slings (Minimum 2 Points),” “Store in Dry Area (-10°C to 40°C),” “Minimum Bending Radius: 240mm (LV)/288mm (MV),” “Do Not Stack Over 1 Reel High.”
Safety warnings: “High-Voltage Cable—Keep Away from Unauthorized Personnel,” “Avoid Impact to Insulation to Prevent Dielectric Failure.”
Contact information: Technical support hotline and local distributor details (for on-site installation assistance).
Container Preparation:
Inspection and Lining: Containers are inspected for rust holes or broken seals, then lined with a 0.3mm PE moisture barrier film to block saltwater vapor (which could corrode the galvanized messenger).
Moisture Control: Four 1kg desiccant bags (silica gel) are placed in the container corners to absorb humidity—critical for preventing condensation during 30-40 day sea voyages (condensation could cause XLPE insulation to absorb water, reducing its dielectric strength).
Reel Loading:
Method: Reels are loaded vertically into the container using a gantry crane with soft nylon slings (width 100mm) to avoid scratching the reel or cable. A 40ft container holds 4-5 steel reels (500m each) or 6-7 wooden reels, with 500mm of space between reels to prevent friction.
Securing: Reels are secured to the container floor using steel brackets (welded to the container) and steel straps (grade 80, width 30mm) tightened to 10kN tension—enough to withstand rough seas (up to 25° container tilt) without reel movement.
Documentation Placement: A waterproof envelope (attached to the container interior) holds all shipping documents, including:
Commercial invoice (HS code 7326.90.90 for Power Cables).
Packing list (reel count, cable length, gross/net weight).
Certificate of Conformity (CoC) to IEC 60502-2, ANSI C135.1, and local standards (e.g., IEEE 524 for the USA).
Fumigation certificate (for wooden reels, per ISPM 15).
Test reports (dielectric strength, tensile strength, UV resistance) for each batch.
Sample Packaging:
The cable is cut to length, coiled into a cardboard tube (diameter 300mm, length 400mm) lined with PE film to prevent insulation scratches. The tube diameter exceeds the cable’s minimum bending radius (240mm for LV), ensuring no permanent deformation.
The tube is placed in a double-walled corrugated box (thickness 8mm) with foam padding (density 40kg/m³) to absorb impact during transit. A “Sample – Fragile” label is affixed, and a copy of the sample’s test report is included.
Repair Segment Packaging:
Repair segments are coiled onto small plastic reels (diameter 500mm) and wrapped in PE film + waterproof kraft paper. The reel is placed in a plywood crate (thickness 15mm) with steel corners for impact resistance. The crate is labeled “Repair Part – Urgent” and includes a repair guide (step-by-step instructions for splicing the cable, including compatible connectors and dielectric grease for moisture protection).
Truck Transportation:
Vehicles: For domestic or short-distance shipments (≤1000km), flatbed trucks (capacity 30-40 tons) are used. The truck bed is lined with rubber mats (thickness 10mm) to prevent reel sliding, and a UV-resistant tarpaulin (thickness 0.5mm) covers the reels to protect against rain, dust, and sunlight (UV exposure can degrade XLPE insulation’s UV resistance).
Handling: Reels are loaded/unloaded using cranes with soft nylon slings (not steel, to avoid reel damage). Drivers are trained in cable transport safety—they avoid sharp turns (which shift reels), maintain a speed limit of 70km/h on highways, and stop every 2 hours to inspect reel securement.
Tracking: Each truck has GPS tracking, accessible via our customer portal. Customers receive real-time updates (location, estimated arrival time) and a 24-hour advance alert before delivery—critical for coordinating on-site installation teams.
Rail Transportation:
For long-distance land shipments (e.g., cross-country in Russia or India), flatcar rail wagons (capacity 60 tons) are used. Each wagon holds 8-10 steel reels or 12-14 wooden reels, secured with steel brackets and anti-slip mats.
Advantages: Rail transport is more stable than trucking (reducing reel movement) and cost-effective for large volumes (20% cheaper than trucking for 1000+ km shipments). Transit time is 5-7 days for cross-country shipments, with minimal delays (e.g., traffic jams).
Coordination: We secure priority booking for urgent orders (e.g., post-storm repair projects) and assign a railway supervisor to monitor shipments at key junctions—ensuring reels are not misplaced during transshipment.
Vessel Selection: We partner with shipping lines (Maersk, COSCO, Hapag-Lloyd) with specialized cargo holds for heavy reels and a 90%+ on-time delivery rate. Vessels are chosen to avoid piracy-prone areas (e.g., Gulf of Aden) and congested ports (e.g., Singapore during peak seasons) to minimize delays.
Transit Time and Routing:
Transit times vary by destination: 15-20 days to Southeast Asia, 25-30 days to Europe, 35-40 days to Africa, 40-45 days to South America.
Routing is optimized to use transshipment hubs (e.g., Dubai for Middle East, Durban for Africa) to reduce transit time. A detailed shipping schedule (vessel name, ports of call, expected arrival dates) is shared 7 days before shipment.
Customs Clearance Support:
We prepare all customs documents (invoice, packing list, CoC, test reports) and work with local customs agents to ensure smooth clearance. For countries with complex procedures (e.g., Nigeria, Brazil), pre-clearance is completed 10 days before vessel arrival, reducing clearance time to 2-3 days. We also assist with import duties and taxes, providing a detailed cost breakdown to the customer in advance.
Packaging Adjustments: Cables are cut into 50-100m lengths (the maximum weight for air freight), coiled onto small plastic reels (diameter 500mm), and wrapped in fire-retardant PE film (compliant with IATA dangerous goods regulations for Electrical Cables).
Carrier Selection: Cargo airlines (FedEx Cargo, DHL Air) with temperature-controlled holds (15-25°C) are used to avoid extreme temperatures that could soften XLPE insulation (e.g., 40°C+ in desert airports).
Priority Handling: Shipments are marked “Priority Cargo – Power Restoration” and fast-tracked through warehouses and airports. A real-time AWB tracking number is provided, and our local agent coordinates last-mile delivery (with a crane-equipped truck) to the installation site within 24 hours of airport arrival—critical for minimizing downtime in emergency scenarios.
Order Confirmation (Day 1-3): A dedicated sales engineer sends a detailed order confirmation, including:
Cable specifications (70mm² ABC, voltage class, conductor material, insulation type, length).
Pricing (unit price, total cost, payment terms).
Production lead time (15-20 days for standard LV/MV ABC, 25-30 days for custom variants with EPR insulation).
Delivery terms (Incoterms, expected shipment date, destination details).
Production Scheduling (Day 4-5): The production team reviews the order, verifies raw material availability (aluminum rods, XLPE compound, galvanized steel), and schedules manufacturing. If materials are out of stock (e.g., AA 6201 aluminum alloy), the customer is notified immediately, and alternative options (e.g., AA 1350 with reinforced messenger) are proposed to maintain the timeline.
Manufacturing & Testing (Day 6-20): Production proceeds per the 1.3 section process, with weekly quality updates sent to the customer (including photos of the cable during insulation extrusion and bundling). Final testing (electrical, mechanical, environmental) is completed on Day 20, and a test report is shared with the customer for review—third-party inspection (e.g., SGS, BV) is arranged if requested.
Packaging & Documentation (Day 21-22): The cable is packaged per the agreed transport mode (reels for land/sea, small reels for air), and all shipping documents are prepared. The customer receives a “shipping readiness” email with photos of the packaged reels and a copy of the packing list for verification.
Shipment Dispatch (Day 23): The shipment is handed over to the logistics provider, and the customer receives a shipping confirmation email with tracking details (B/L number for sea, AWB number for air, GPS link for truck). A final copy of all documents (test reports, CoC, invoice) is sent via email for the customer’s records.
Incoterms Options:
EXW (Ex Works): Customer collects the cable from our factory (Jiangsu, China) and handles all logistics, customs, and insurance. Ideal for large utilities with their own global logistics teams.
FOB (Free On Board): We deliver the cable to the designated port (Shanghai/Ningbo) and load it onto the customer’s vessel/container. Customer covers sea/air freight, insurance, and destination customs.
CIF (Cost, Insurance, Freight): We cover transport to the destination port and provide marine insurance (110% of shipment value, covering loss or damage during transit). Customer handles destination customs and inland transport.
DDP (Delivered Duty Paid): We manage the entire process, including transport, customs clearance (export/import), duty payment, and final delivery to the project site. This “door-to-door” option is popular for small utilities or rural projects with limited logistics resources, with a 8-10% service fee (varies by destination’s customs complexity).
Payment Terms:
Standard Terms: 30% advance payment upon order confirmation (to secure raw materials and reserve production capacity), 70% balance due within 7 days of receiving a copy of the B/L/AWB (original documents are released after full payment).
Long-Term Customer Terms: For customers with a 3+ year partnership and a history of timely payments (e.g., national utilities), we offer extended terms: 20% advance, 60% due upon B/L/AWB copy, 20% due within 30 days of successful on-site testing (verified via the customer’s inspection report). This helps customers manage cash flow for large projects (e.g., 100km rural electrification).
Emergency Orders: For air freight emergency shipments, 50% advance payment is required to prioritize production, with the remaining 50% due upon shipment dispatch.
Inspection Timeline: The customer is required to inspect the delivered cable within 7 working days of receipt (extended to 14 days for international shipments, accounting for customs delays). The inspection should include:
Visual Checks: Inspect the XLPE insulation for scratches, pinholes, or discoloration (any damage could compromise dielectric strength), verify the cable’s voltage class, conductor material, and length against the order confirmation, and check the messenger wire for corrosion (critical for galvanized steel).
Dimensional Verification: Measure the conductor cross-section (70mm²) and insulation thickness (1.8mm for LV, 2.5mm for MV) using a caliper—tolerance should be within ±5% of specifications.
Document Review: Confirm that all required documents (test reports, CoC, customs clearance papers) are complete and match the cable’s batch number.
Issue Reporting: If defects or non-compliance are identified, the customer must submit a formal claim via email within the inspection period, including:
High-resolution photos/videos of the issue (clearly showing the batch number and defect, e.g., “5m of MV ABC has a 2mm scratch on insulation exposing conductor”).
A copy of the delivery receipt and order confirmation.
A detailed description of the impact on the project (e.g., “Insulation damage delays rural electrification, requiring urgent replacement”).
Resolution Process: Our quality and logistics teams review the claim within 24 hours and provide a solution within 48 hours, based on the issue severity:
Minor Damage (e.g., small insulation scratch): We send a free repair kit (including XLPE insulation tape, heat-shrink sleeves, and a step-by-step repair guide) via express courier. For critical projects, we dispatch a certified technician to complete on-site repairs and conduct post-repair dielectric testing (to verify insulation integrity).
Major Damage (e.g., conductor breakage, widespread insulation defects): We ship a replacement cable of the same specification within 7 days (3 days for emergency orders), covering all transportation costs. The damaged cable is returned to our factory for root cause analysis (e.g., identifying if insulation damage occurred during transit or production) to prevent future issues.
Non-Compliance (e.g., wrong voltage class, incorrect conductor material): We arrange for a full exchange of the non-compliant cable, with the new shipment dispatched within 10 days. Alternatively, we offer a 20% discount on the order if the customer can use the non-compliant cable with minor adjustments (e.g., LV cable for a low-power MV project).
Sample Inquiry: The customer contacts our sales team via email, phone, or our online portal, specifying:
Cable details: 70mm² ABC, voltage class (LV/MV), conductor material (AA 1350/AA 6201), insulation type (XLPE/EPR), and sample length (10-20m, standard for testing).
Test focus: Key properties to validate (e.g., “XLPE insulation’s UV resistance for desert projects,” “messenger wire’s tensile strength for long spans,” “conductor’s current-carrying capacity for industrial loads”).
Local Standards Compliance: Specific certifications required (e.g., “IEC 60502-2 for European projects,” “ANSI C135.1 for North American rural electrification”).
Delivery Deadline: Timeline for sample receipt (e.g., “needed for a project proposal in 10 days”).
Sample Quotation & Confirmation:
Sample Cost: $200-300 per 10m sample (covers raw materials and production costs). For customers who place bulk orders within 3 months, the full sample cost is credited toward the bulk invoice—eliminating upfront validation expenses.
Shipping Cost: Calculated based on destination (e.g., $80 to Southeast Asia, $120 to Africa) and includes express courier (DHL/FedEx) with insurance (coverage for loss or damage during transit).
Compliance Documentation: List of included test reports (e.g., “UV aging test per IEC 60811-4-1,” “tensile strength test for messenger wire”).
Sample Production & Delivery:
A “Sample Test Kit” with step-by-step instructions for on-site validation (e.g., “How to Measure Conductor Resistance,” “UV Exposure Test Setup”).
Certified test reports from our in-house lab (signed by a senior quality engineer) and third-party certifications (if requested, e.g., SGS verification for IEC compliance).
A technical data sheet with detailed specifications (current capacity, insulation thickness, messenger strength) for easy comparison with project requirements.
Test Guidance Resources:
UV Resistance Test: Instructions for exposing the sample to 100 hours of simulated sunlight (using a UV lamp) and checking for insulation discoloration or cracking (no degradation indicates compliance with IEC 60811-4-1).
Tensile Strength Test: How to use a portable tensile tester to verify the messenger wire’s strength (minimum 1200MPa for galvanized steel, 320MPa for aluminum alloy).
Current-Carrying Capacity Test: Guidelines for connecting the sample to a low-voltage power source and measuring current flow (220A for LV, 180A for MV) without overheating.
Technical Consultation:
Review test results (e.g., “A 190A current capacity for the MV sample is within the acceptable range for your 10kV industrial project”).
Address technical questions (e.g., “Can the XLPE insulation withstand -40°C winters in northern Canada?”).
Recommend customizations (e.g., “Adding a 0.5mm HDPE outer sheath will improve resistance to bird pecking in your rural area”).
Feedback Collection:
Whether the sample meets performance expectations (e.g., “UV resistance, current capacity”).
Any adjustments needed for bulk production (e.g., “Increasing messenger wire thickness to 35mm² for longer spans”).
Barriers to bulk ordering (e.g., “Need extended payment terms for the 50km rural project”).
Installation Manuals:
Pre-Installation Checks: How to inspect utility poles (minimum load-bearing capacity of 15kN for 50m spans), verify cable reel condition (no insulation damage), and prepare tools (e.g., tensioners, pole-mounted clamps).
Tensioning Guidelines: Recommended tension levels for the messenger wire (10kN for 40m spans, 12kN for 50m spans) to avoid over-stretching or sagging.
Weather Precautions: Instructions for installing during favorable weather (wind speed ≤15km/h, no rain) to prevent cable damage.
Safety Protocols: Requirements for using insulated gloves, hard hats, and fall protection equipment (critical for pole-mounted installation).
On-Site Technical Teams:
Conduct a pre-installation site survey: Identify potential obstacles (e.g., tall trees, rivers) and adjust span lengths accordingly (e.g., reducing to 35m spans over rivers to minimize sag).
Supervise critical installation phases: Monitor tensioning, ensure proper clamping to poles, and verify insulation integrity after installation.
Train local teams: Provide hands-on training for the customer’s installation crew (e.g., “How to Use Tensioners Safely,” “Inspecting Insulation After Installation”) to build long-term capacity.
Installation Tools & Accessories:
Pole-mounted clamps (rated for 15kN tension) to secure the cable to utility poles.
Cable tensioners (with digital force gauges) to ensure precise tensioning.
Insulation testing kits (2500V megohmmeters) for post-installation dielectric testing.
Covered Defects:
Insulation Failures: Cracking, peeling, or loss of dielectric strength due to substandard XLPE/EPR material or extrusion errors (e.g., “XLPE insulation cracks after 5 years of normal use”).
Conductor Issues: Corrosion, breakage, or reduced conductivity (below 50MS/m for aluminum alloy) due to poor surface treatment or stranding.
Messenger Wire Failures: Sagging, corrosion, or tensile strength loss (below 80% of rated capacity) due to substandard galvanization or material defects.
Exclusions:
Improper installation (e.g., over-tensioning the messenger wire, installing during extreme weather).
External factors (e.g., lightning strikes, falling trees, vandalism).
Lack of maintenance (e.g., ignoring bird pecking damage, failing to inspect insulation annually).
Warranty Claim Process:
Claim Submission: The customer submits a claim via our online portal, including:
Proof of purchase (order confirmation, delivery receipt).
Photos/videos of the defect (clearly showing the batch number and issue).
A maintenance log (to verify compliance with recommended maintenance schedules).
Claim Review: Our quality team reviews the claim within 24 hours and may send a technician to inspect the site (free of charge for projects ≥5km).
Resolution: Approved claims are resolved within 7 days:
Minor Repairs: We send a free repair kit (e.g., XLPE insulation patches for small cracks) and dispatch a technician for on-site repairs if needed.
Major Replacements: We ship a new cable of the same specification, covering all transportation and installation costs.
Compensation: For irreparable damage that disrupts power supply (e.g., a faulty messenger wire causing span collapse), we provide compensation for downtime (up to $5,000 per day) until the issue is resolved.
Preventive Maintenance Schedule:
Monthly Visual Inspections: Check for insulation damage (e.g., bird pecking, scratches), messenger wire corrosion, and span sag (no more than 5% of span length).
Quarterly Electrical Testing: Measure insulation resistance (≥1000MΩ·km) and conductor resistance (≤0.019Ω/m for aluminum alloy) to detect early signs of degradation.
Annual Weather Resistance Checks: Inspect insulation for UV damage (desert areas) or corrosion (coastal areas) and re-tension the messenger wire if sag exceeds 5%.
5-Year Comprehensive Inspection: Hire a third-party to conduct a full performance test (current capacity, dielectric strength, messenger tension) and provide a maintenance report with recommendations.
Troubleshooting Support:
24/7 Technical Hotline: A toll-free hotline connects customers to our overhead cable experts for urgent issues (e.g., “Cable insulation damaged by a storm, causing power outage”). The team provides immediate guidance (e.g., “How to Isolate the Damaged Section”) to minimize downtime.
Remote Diagnostics: For complex issues (e.g., intermittent power loss), we request data from the customer’s smart grid system (e.g., current fluctuations, voltage drops) to pinpoint root causes (e.g., “Loose clamp causing high resistance”).
On-Site Troubleshooting: For critical issues (e.g., a broken messenger wire in a rural area), we dispatch a technician within 48 hours (domestic) or 72 hours (international) with specialized tools (e.g., cable fault locators, tension testers) to resolve the problem.
Lifetime Technical Support:
Hongtai Cable Technology Co., Ltd
E-mail: export@qlcables.com
sales@qlcables.com
Tel / WhatsApp: + 86-18032066271
Ajouter: Zone de développement industriel de Xiaokou, comté de Ningjin, City de Xingtai ， Province de Hebei, Chine
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