VLV Aluminum Core PVC Insulated PVC Sheathed Low Voltage Power Cable for Outdoor Civil & Municipal Fixed Distribution Projects

VLV cable is a low-voltage power cable featuring aluminum conductors, PVC insulation, and a PVC outer sheath; it is designed for fixed-installation power transmission and distribution systems that do not require special fire-resistance or emergency power supply capabilities.

The structural layers, from inner to outer, are as follows:

• Compacted stranded aluminum conductor: Made from industrial-grade pure aluminum wire using a Class 2 stranding process, ensuring stable mechanical strength and toughness.
• PVC insulation layer: Utilizes heat-resistant PVC compound extruded to a uniform thickness, ensuring high dielectric strength.
• Non-hygroscopic filler core: Uses plastic cord filling to ensure a round cable profile, minimize internal voids, and prevent moisture ingress.
• Inner bedding tape: Serves to separate the filler from the outer sheath, preventing frictional damage during installation and pulling.
• PVC outer sheath: Made from weather-resistant ST1-grade PVC material offering crush and aging resistance; suitable for outdoor and direct-burial environments.
• Standards compliance: Complies with GB/T 12706.1 and GB/T 2952 standards, fully meeting domestic design specifications for civil construction and municipal power distribution.
• Comparison with copper-conductor YJV/NH-YJV series: Uses aluminum conductors to reduce raw material costs; focuses on cost-effective, high-current backbone installations for non-fire-critical circuits, making it particularly suitable for projects with strict overall material budget controls.

Mainstream models: 0.6/1kV (covering over 95% of civil, municipal, and rural power grid renovation projects)

Optional custom low-voltage class: 0.3/0.5kV (suitable for small power distribution branch lines)

Single-core VLV: 10mm² ~ 800mm²

Multi-core VLV: 2/3/4/5 cores, as well as 3+1 / 3+2 / 4+1 composite core configurations; cross-sectional area range: 10mm² ~ 400mm²

Conductor material standard: 99.7% high-purity electrical-grade aluminum; utilizes a compacted stranding process to reduce DC resistance and optimize current-carrying performance

• Long-term permissible operating temperature: 70°C (standard PVC insulation limit; stable continuous operation at rated load)
• Short-circuit instantaneous withstand temperature: 160°C (duration ≤ 5 seconds)
• Minimum installation bending radius: 10 times the outer diameter for multi-core VLV; 12 times the outer diameter for large-cross-section single-core cables
• Installation ambient temperature requirements: Installation permitted at temperatures above 0°C; pre-heating required below 0°C to prevent sheath embrittlement and cracking
• Insulation withstand voltage performance: Finished cables must pass a 3.5kV AC withstand voltage test prior to leaving the factory, with no breakdown occurring over a 5-minute duration

• Small cross-sections (10–70 mm²): Auxiliary distribution branch lines for buildings, street lighting circuits
• Medium cross-sections (95–185 mm²): Main distribution lines for residential complexes, power supply feeders for factory workshops
• Large cross-sections (240–800 mm²): Municipal grid feeder cables, centralized distribution mains for industrial parks

The unit price of aluminum is far lower than that of oxygen-free copper; for long-distance trunk lines exceeding 100 meters, total procurement costs can be reduced by 35%–55% compared to copper-core cables of the same cross-section. This makes them an ideal fit for projects with strict budget constraints, such as government infrastructure, rural grid upgrades, and roadway lighting installations.

Aluminum has only one-third the density of copper; for a given cross-sectional area and length, VLV cables are significantly lighter. This improves loading and transport efficiency, thereby lowering logistics costs for large-volume orders. On-site, workers expend less physical effort during cable pulling, conduit threading, and vertical shaft installation; this not only shortens the cabling installation schedule but also reduces labor costs for the general contractor.

Featuring a dual-layer PVC insulation and sheathing structure, the cable offers reliable moisture resistance, resistance to weak acids and alkalis, and resistance to UV-induced aging:

• Suitable for various installation scenarios, including direct underground burial, open-air cable trenches, and overhead conduit routing.
• Capable of withstanding long-term soil moisture and direct sunlight exposure (such as in municipal roadside lighting circuits).
• The fully sealed cable structure effectively prevents mold growth in the auxiliary circuits of damp underground utility tunnels.

Utilizing compacted stranded aluminum conductors combined with a thickened PVC outer sheath, the cable withstands crushing forces from underground gravel and minor external impacts during installation. Even when directly buried at the roadside without protective steel conduit, VLV cables maintain structural integrity and stability under standard soil pressure.

A compacted stranding process is employed to minimize resistive losses in the aluminum conductors. In engineering design, the conductor cross-section can be increased by one standard size to compensate for the slightly higher resistivity of aluminum compared to copper; this effectively controls voltage drop in kilometer-scale distribution lines without significantly increasing material costs.

The PVC outer sheath features a smooth surface, facilitating easy cleaning and visual inspection of the cable; aluminum conductors require no special anti-corrosion treatment during long-term operation, thereby reducing the routine inspection workload for property and power management teams.

• Municipal Public Infrastructure
  • Urban street lighting, municipal park power distribution, auxiliary power for community plazas, and underground trunk lines for urban road renovation
• Rural Grid Upgrades and Agricultural Projects
  • Main distribution lines for villages, power lines for irrigation pumps, and power circuits for greenhouse lighting and ventilation
• Industrial Parks (Non-Fire-Safety Critical Circuits)
  • General power trunk lines for factory workshops, warehouse lighting distribution, and outdoor power supply for facility perimeters
• Residential Complex Public Power Distribution
  • Feeder lines from residential transformer rooms, general lighting circuits for underground garages, and power lines for non-fire-safety equipment in public areas
• Fixed Power Distribution for Temporary Projects
  • Long-term fixed power supply for construction sites and outdoor power distribution systems for logistics parks

Case 1: Phase III Project for Rural Power Grid Renovation and Upgrade

For a project involving centralized village-level power distribution trunk lines, the local electric power design institute selected the VLV 0.6/1kV 4×120 aluminum-core cable series. Compared to a copper-core cable solution, cable procurement costs for the project were reduced by 42%. The comprehensive batch inspection reports and cable selection calculations provided by our factory facilitated the project's successful passing of the power supply bureau's acceptance inspection on the first attempt. The cables' lightweight nature simplified transportation in mountainous terrain and the direct-burial installation process, resulting in the project being completed six days ahead of schedule.

Case 2: Urban Ring Road Street Lighting Renovation Project

Engineers from the general contractor utilized VLV 3×35 aluminum-core cables for the roadside direct-burial lighting circuits. The cable's dual-layer PVC structure effectively withstood long-term rainwater infiltration and corrosion from roadside soil; on-site spot checks conducted after two years of operation revealed no instances of insulation aging or dielectric breakdown. We provided customized cut-to-length services matched to the specific distances of the road sections, thereby eliminating material waste associated with on-site cable trimming.

Case Study 3: Power Distribution Project for Phase I Factory Buildings in a Large Industrial Park

The electrical design team specified VLV 4×240 large-cross-section aluminum-core cables for the workshop's main incoming power lines. By utilizing our professional optimization plan for conductor cross-section selection, the voltage drop across this 1.2-kilometer main line fully complied with national electrical design standards. Our technical team dispatched engineers to assist in drafting the technical response for the tender, helping the contractor successfully win the bid.

• Voltage Rating Confirmation: Standard 0.6/1kV VLV cables are used for conventional fixed installations in civil and municipal projects; custom 0.3/0.5kV models are selected only for low-power control branch circuits.
• Conductor Cross-Section Matching Logic: Since the electrical conductivity of aluminum is lower than that of copper, VLV cables with a cross-section one or two sizes larger than the equivalent copper-core cables must be selected to keep the line voltage drop within design limits. Additionally, a load margin of 10%–15% should be reserved to accommodate future equipment capacity expansion.
• Core Count Matching Rules: 3-core VLV cables are selected for single-phase lighting circuits; 4-core cables are used for three-phase balanced power main lines; and composite-core cables (3+1 or 4+1 configurations) are selected for equipment requiring grounding.
• Application Suitability Note: VLV-type PVC-insulated cables have a maximum continuous operating temperature of only 70°C; they are unsuitable for high-temperature environments such as boiler rooms, kiln workshops, or fire emergency power circuits. In such scenarios, XLPE-insulated YJV cables or fire-resistant NH-YJV cables should be used instead.

• Direct Burial Protection: When laying cables directly underground, a sand bedding layer must be placed above and below the cable, topped with a protective layer of bricks to prevent sharp stones from puncturing the outer sheath; HDPE protective conduits must be used in areas subject to heavy vehicle traffic.
• Bending Control: Strictly adhere to minimum bending radius specifications; excessive bending can cause the PVC insulation to crack, thereby reducing the safe service life of the circuit.
• Parallel Cable Installation: A heat dissipation gap of 25% should be maintained between bundled VLV cables; dense stacking within cable trenches leads to temperature rise and reduces actual current-carrying capacity.
• Environmental Constraints: Avoid exposure to environments containing strong acidic or alkaline chemical wastewater; full-conduit isolation protection measures must be employed when installing cables within chemical workshops.

• Qualification verification prior to order placement: Suppliers must provide the factory production license, quality certificates for raw materials (aluminum ingots), and type test reports for the finished cables.
• Spot checks upon delivery: Verify clear markings on the cable's outer surface (e.g., "VLV 0.6/1kV + cross-sectional specification") and inspect the roundness of the aluminum core and the uniformity of the insulation layer thickness; if required by the tender project acceptance criteria, cut samples for withstand voltage testing.
• Delivery scheduling: For bulk orders involving municipal projects or power grid infrastructure, orders must be placed 7–12 working days in advance to allow sufficient time for production and batch inspection.

• Compliance with national standards: All VLV cables fully comply with the GB/T 12706.1 power cable standard and meet the requirements of GB 50217 "Code for Design of Electric Power Supply Systems of Civil Buildings" as well as acceptance specifications for municipal power grid construction.
• Complete delivery documentation: For every batch, the following must be provided: factory inspection reports, raw material certificates, packing lists, special VAT invoices, and technical parameter compliance sheets.
• Support for third-party testing: Products have passed type tests conducted by nationally authorized electrical testing institutions; test reports are available for filing and review by power bureaus, construction bureaus, and fire safety departments.
• Batch consistency control: Uniform raw materials and extrusion processes are used across all production batches to ensure stable electrical performance and mitigate the risk of acceptance failure due to inconsistent cable quality.

Our product range spans from small 10mm² branch cables to large-cross-section 800mm² single-core trunk cables. We maintain ample stock of standard specifications to ensure rapid delivery. We support customized core configurations, cut-to-length services, and project-specific sheath markings to meet the unique requirements of various engineering tenders, offering a one-stop procurement solution for aluminum-core cables that eliminates the need to coordinate with multiple suppliers.

We use only high-purity (99.7%) virgin aluminum ingots, strictly avoiding recycled aluminum scrap; both insulation and sheath layers utilize high-quality, standardized imported PVC compounds. We implement a three-tier quality inspection system—comprising incoming raw material inspection, in-process monitoring of semi-finished products, and withstand-voltage sampling tests on finished goods—to effectively prevent common quality defects found in products from smaller manufacturers, such as sheath brittleness, excessively thin insulation, and high aluminum conductor resistance.

By eliminating intermediary wholesale markups, we offer tiered bulk discounts for large-scale engineering orders. Our technical team provides complimentary load calculations and conductor cross-section optimization plans, helping buyers balance cable costs with operational safety and further reduce the project's total expenditure on electrical materials.

Our senior power cable engineers provide free, one-stop technical services, including consultation on power distribution line design, provision of VLV current-carrying capacity charts, optimization of cable laying plans, and assistance in preparing technical documentation for tenders. For large-scale municipal and grid renovation projects, we assist in compiling parameter compliance statements that meet tender requirements, thereby enhancing the competitiveness of contractors' bids.

Equipped with automated continuous extrusion production lines, we maintain a daily output of tens of thousands of meters of VLV cable and hold substantial raw material reserves. This enables us to guarantee on-time delivery even for massive grid renovation orders, thereby eliminating the risk of construction delays caused by cable supply issues.

All supplied VLV cables come with a 12-year manufacturer's quality warranty. Should technical challenges arise during installation, our technical team provides remote video guidance within 24 hours and arranges on-site support for major projects as needed. We maintain dedicated client profiles for our long-term general contractor and power engineering partners, proactively stocking inventory based on project schedules to shorten lead times for subsequent orders.

VLV aluminum-conductor, PVC-insulated power cables represent the most cost-effective, standardized cabling solution for fixed power distribution circuits—excluding fire-safety emergency systems—across municipal, rural grid, industrial park, and residential utility projects. Offering advantages such as low total procurement costs, lightweight construction for easy installation, reliable performance in outdoor and underground environments, and full compliance with national standards, these cables perfectly meet the core needs of engineering designers and procurement managers: ensuring long-term operational stability while effectively controlling project budgets.

As a specialized manufacturer of VLV cables holding full-specification certifications, we integrate standardized product supply, comprehensive compliance documentation, and professional electrical technical consulting. We serve global engineering contractors, power grid companies, and municipal procurement clients, helping diverse power distribution projects pass official inspections smoothly and achieve optimal lifecycle cost management.