YJLHV22 Aluminum Alloy Steel Tape Armoured PVC Sheathed Power Cable | STA Underground Armoured Distribution Cable

YJLHV22 is a medium-to-low voltage armored power cable designed for demanding underground and outdoor applications, serving as an upgraded successor to the YJLV22 aluminum-conductor cable. It features AA8030 rare-earth creep-resistant aluminum alloy conductors, extruded cross-linked polyethylene (XLPE) insulation, an inner bedding layer, double-layer overlapping galvanized steel tape armor, and a weather-resistant PVC outer sheath. This design effectively resolves structural defects common in standard YJLV22 cables, such as terminal deformation and contact resistance drift over time. With appropriate conductor cross-section selection, it serves as a practical alternative to traditional YJV22 copper-conductor armored cables, striking a balance between electrical performance stability, mechanical protection, and overall project cost control. The product has passed all relevant standardized tests and is widely specified for fixed power transmission and distribution projects by engineering design institutes, EPC contractors, and municipal power authorities across Asia, Africa, the Middle East, and Latin America.

• YJ: Indicates XLPE (cross-linked polyethylene) insulation, offering excellent dielectric stability and resistance to thermal aging.
• LHV: Indicates an AA8030 rare-earth modified aluminum alloy conductor, characterized by extremely low creep deformation.
• 22: Indicates a double steel-tape armored structure with inner and outer PVC sheaths, providing the mechanical protection required for direct burial.

• GB/T 31840.1–3-2025 (National Standard): Extruded insulated power cables with aluminum alloy conductors for rated voltages from 0.6/1 kV to 35 kV.
• GB/T 29920-2013 (Technical Specification): Rare-earth high-strength aluminum alloy rods (raw material).
• IEC 60502-1 & IEC 60502-2 (International Standards): Extruded insulated power cables for medium and low voltages.
• GB/T 19666 (Flame Retardancy Classification Standard): Supports customization of ZA, ZB, and ZC flame-retardant grades.

We provide qualification documents—including ISO9001 quality system certification, CCC mandatory certification, CE and CB certifications, comprehensive type-test reports, and third-party inspection certificates—to meet the requirements for bidding and project acceptance in overseas infrastructure projects.

• The conductor consists of compacted, stranded AA8030 aluminum alloy wires. A precision stranding process enhances the conductor's roundness and compactness, effectively mitigating long-term creep caused by sustained pressure at crimped terminals, thereby ensuring stable contact resistance over decades of continuous operation.
• During the extrusion of the XLPE insulation layer, real-time online X-ray monitoring is employed to strictly control insulation wall thickness tolerances within specified limits. The insulation material offers excellent dielectric strength and low dielectric loss, maintaining stable electrical performance even under conditions of frequent load fluctuations.
• Non-hygroscopic polypropylene fillers and binding tapes fill the interstices within the cable core to maintain a circular cross-section, minimize internal friction during bending and installation, and block moisture ingress into the insulation structure.
• An extruded PVC inner sheath serves as a separation layer, preventing direct friction between the steel tape armor and the insulation while inhibiting electrochemical corrosion of the metal armor and internal components in moist, acidic, or alkaline soil environments.
• Double-layer overlapping galvanized steel tape armor forms the primary mechanical protection system. This overlapping structure withstands lateral soil pressure, accidental impacts during excavation, punctures from sharp rocks, and rodent damage, enabling direct burial installation without the need for additional protective conduit.
• The PVC outer sheath provides comprehensive environmental protection—resisting acids, alkalis, moisture, UV radiation, and ozone degradation—thereby extending the cable's service life in both underground and exposed installations.

• Rated voltage options: Covers mainstream 0.6/1kV low-voltage specifications for general power distribution; also offers customized medium-voltage specifications (8.7/10kV, 8.7/15kV, and 26/35kV) suitable for substation feeders and high-power transmission systems
• Conductor cross-sectional area range: 10mm² to 630mm²
• Standard core configurations: 3-core, 4-core, 5-core, 3+1, 3+2, and 4+1; special core structures can also be customized based on specific project drawing requirements
• Thermal performance limits: Maximum long-term operating temperature of 90°C; 5-second short-circuit withstand temperature of up to 250°C; minimum installation ambient temperature of -40°C, meeting the needs of extremely cold and high-altitude regions
• Minimum bending radius per installation standards: Not less than 15 times the outer diameter for multi-core YJLHV22 models; not less than 20 times the outer diameter for customized single-core models
• Weight advantage: For configurations with equivalent current-carrying capacity, the total cable weight is only 48% to 52% that of equivalent YJV22 copper-core armored cables, significantly reducing labor costs associated with logistics, hoisting, and on-site installation

• Creep-resistant conductors eliminate the risk of terminal overheating. Unlike standard pure aluminum cables, which are prone to terminal loosening after years of thermal cycling, the AA8030 alloy resists plastic deformation under sustained pressure; this ensures connection stability and reduces the risk of circuit failures during long-term operation.
• Integrated double steel-tape armor supports direct-burial installation. Direct-burial routing eliminates the need to procure additional conduits or excavate trenches, thereby simplifying civil engineering plans and shortening the overall on-site construction schedule.
• Wide temperature adaptability and an aging-resistant structure extend service life. The XLPE insulation offers excellent resistance to hydrolysis and thermal degradation amidst continuous temperature fluctuations; with a design life of up to 30 years under standard operating conditions, the cable is ideal for long-lifecycle infrastructure investment projects.
• Customizable flame-retardant ratings meet building fire safety code requirements. Options such as ZA, ZB, and ZC flame-retardant grades are available, complying with regulatory fire safety standards for power supply systems in underground utility tunnels, highway tunnels, high-rise building basements, and densely populated public buildings.
• A mature current-carrying capacity matching solution enables a reliable alternative to copper-core YJV22 cables. Design guidelines recommend increasing the conductor cross-section by one or two sizes to achieve equivalent current-carrying capacity; this solution is compatible with existing cabinet busbars, terminals, and wiring layouts, eliminating the need for a major redesign of the entire electrical system.

• Raw material costs are lower than those of copper-core YJV22 cables, reducing initial capital expenditure for bulk procurement.
• Its lightweight nature lowers transportation fees, machinery rental costs, and the labor required for on-site installation.
• Adopting a direct-burial installation method eliminates the need for conduit materials and associated trenching and civil works, effectively reducing the project's total construction budget.
• Lower on-site failure rates reduce the manpower required for routine inspections and the costs associated with periodic cable replacement during project operation.
• Unified standards and specifications shorten the timelines for technical reviews, sample approvals, and incoming quality inspections for bulk tender orders.

• Upgrading of municipal power grids and renovation of underground service lines for residential complexes
• Underground main power supply lines for commercial complexes, hospitals, schools, and high-rise office buildings
• Fixed power distribution lines within industrial parks, manufacturing plants, and heavy-duty workshop equipment
• Collection and interconnection cables between inverters and box-type substations in large-scale ground-mounted PV power plants
• Power connection lines between wind farm step-up substations and outdoor power distribution facilities
• Power lines laid along roads, bridges, and tunnels that are exposed to a high risk of mechanical damage
• Outgoing feeder cables from distribution substations, and direct-buried connection lines between distribution cabinets and transformers

• Cross-section Matching for Copper Cable Replacement: When replacing YJV22 copper cables with YJLHV22 cables, select a model with a cross-sectional area one or two sizes larger to ensure equivalent current-carrying capacity. Our technical team can provide complimentary, customized current-carrying capacity calculation charts for reference during design reviews and drawing revisions.
• Terminal Connection Specifications: Cable terminations must utilize dedicated copper-aluminum transition terminals (bimetallic terminals). Direct contact between aluminum and copper conductors is strictly prohibited to prevent electrochemical reactions that could lead to increased contact resistance.
• Installation Scope: This cable is suitable for direct burial, cable trenches, tunnels, and indoor rack installations. Due to its limited axial tensile strength, long-distance overhead installation is not recommended.
• Armour Grounding Requirements: Both ends of the steel-tape armour layer must be reliably grounded in strict accordance with electrical standards to prevent the accumulation of induced voltage within the metallic armour structure.
• Storage and Transportation Requirements: Cable reels must be stored in a dry, well-ventilated warehouse; avoid prolonged exposure to rain or intense sunlight outdoors. Prevent severe impacts during loading, unloading, and transportation to avoid cracking the outer sheath or damaging the internal structure.

• Comprehensive compliance documentation for tenders: All products are manufactured in strict accordance with GB and IEC standards. We provide a complete set of factory qualification documents, test reports, third-party certifications, and customized technical data sheets free of charge to meet the review and submission requirements of global tendering processes.
• Strict control over raw materials and production processes to ensure batch consistency: We utilize certified, high-quality AA8030 aluminum alloy rods and imported, high-purity XLPE raw materials. Key production stages feature real-time online monitoring and strict control of insulation eccentricity, ensuring stable electrical performance across different production batches.
• Flexible customization services for specific project needs: Customization options include flame-retardant modifications (ZA/ZB/ZC), upgrades to low-smoke zero-halogen (LSZH) outer sheaths, production of medium-voltage cables (10kV/15kV/35kV), cut-to-length services, and packaging options using either wooden or steel reels.
• Direct-from-manufacturer model offering competitive pricing and flexible order requirements: We operate our own production facilities, eliminating intermediary markups. We support small-batch sample orders for preliminary project testing and offer rapid production scheduling for large orders; standard specifications are kept in stock for quick shipment.
• We provide "one-stop" professional technical team support throughout the entire project lifecycle. Our electrical engineers offer complimentary consultations on cable selection, comparative analysis of copper-to-aluminum substitution options, advice on cable routing and installation, and remote or on-site technical guidance, all backed by long-term quality assurance and systematic after-sales follow-up services.
• With extensive experience in cross-border exports, we fully support the delivery of overseas EPC projects. We possess mature export packaging solutions, comprehensive customs documentation, and efficient logistics coordination capabilities. We have a proven track record of successful deliveries for power infrastructure projects across Africa, Southeast Asia, the Middle East, and South America, and are well-versed in the project acceptance standards and inspection specifications of various regions.

• Q1: Can YJLHV22 fully replace YJV22 copper-core armored cable in engineering designs? A1: Yes. Through appropriate conductor cross-section upgrades, YJLHV22 matches YJV22 in terms of current-carrying capacity, mechanical protection, and design service life. As a cost-effective alternative, it is widely used in municipal infrastructure, commercial buildings, and new energy projects globally, with decades of proven field application across Europe, Asia, North America, and Africa.
• Q2: What is the fundamental difference between YJLHV22 and standard YJLV22 aluminum-core armored cables? A2: YJLHV22 utilizes creep-resistant AA8030 rare-earth aluminum alloy conductors, overcoming the inherent flaws of standard pure-aluminum YJLV22 cables, such as terminal loosening and overheating. It offers significantly improved long-term connection reliability, making it ideal for fixed power distribution systems requiring stable operation for over 20 years.
• Q3: Can YJLHV22 cables be laid via direct burial without protective conduit? A3: Yes. Featuring a double steel-tape armored structure, the cable offers excellent resistance to crushing, impact, and rodent damage. Direct burial is its most typical application, allowing customers to significantly save on civil engineering materials and installation costs.
• Q4: What certification documents can you provide to meet tender requirements? A4: We can provide the production license, ISO9001 quality system certification, CCC, CE, and CB certifications, full-item type test reports, raw material inspection reports, third-party authoritative test certificates, and editable, customized technical parameter sheets tailored for tenders.
• Q5: What is the production and delivery lead time for large-volume orders? A5: Standard stock specifications can be shipped within 3 to 7 working days. Production for customized flame-retardant and medium-voltage models typically takes 10 to 20 working days. For urgent EPC project orders, we can negotiate priority scheduling to meet tight delivery deadlines.
• Q6: How can corrosion at the copper-aluminum connection point be prevented during installation? A6: We recommend using compatible bimetallic copper-aluminum transition terminals and can provide specific recommendations for terminal selection. Adhering to standardized crimping procedures and applying an anti-corrosion coating can completely eliminate the risk of electrochemical corrosion at the connection point.