YJV Copper Conductor XLPE Insulated PVC Sheathed Power Cable | Non-Armoured

YJV is a mainstream unarmored copper-core power cable widely used in fixed medium- and low-voltage power transmission and distribution systems. Structurally, the cable consists of a compacted stranded electrolytic copper conductor, a cross-linked polyethylene (XLPE) insulation layer, and an extruded polyvinyl chloride (PVC) outer sheath; it demonstrates stable conductivity, excellent heat resistance, and reliable insulation characteristics under continuous operating loads. Lacking steel-tape armor, YJV cables are lighter and more flexible than armored models such as YJV22, YJLV22, and YJLHV22, making them highly adaptable to diverse installation environments, including cable conduits, enclosed cable trenches, in-wall piping, indoor overhead racks, and indoor vertical shafts. Leveraging the inherent mechanical and electrical stability of copper conductors, YJV has become the preferred standard for critical power supply circuits that demand long-term operational stability, low joint temperature rise, and minimal energy loss. It also serves as the universal benchmark for comparison against aluminum and aluminum-alloy cables and is widely specified by design institutes, real estate developers, industrial engineering departments, and municipal utility agencies across the global construction and infrastructure sectors.

• YJ: Cross-linked polyethylene (XLPE) insulation; features high dielectric strength, excellent aging resistance, low dielectric loss, and superior resistance to thermal degradation under cyclic loading conditions.
• V: Polyvinyl chloride (PVC) outer sheath; provides physical protection in enclosed installation environments against abrasion, minor mechanical friction, dust, and mild chemical corrosion.

• GB/T 12706.1–4-2020: National standards for extruded insulation power cables with rated voltages from 0.6/1kV to 35kV.
• IEC 60502-1, IEC 60502-2: International standards for extruded insulation power cables.
• IEC 60228: Standard specifications for conductor construction.
• GB/T 19666: Flame-retardant grade standards (customizable YJV modified cables with ZA, ZB, or ZC flame-retardant ratings).

Comprehensive Certification System: ISO9001 Quality Management System certification, CCC mandatory certification, CE certification, CB certification, complete type test reports, raw material inspection documentation, and third-party independent test certificates; fully meets requirements for international tendering, technical reviews, and project completion acceptance audits.

Utilizes Class 2 compacted stranded high-purity electrolytic copper wire. The high conductor density effectively reduces DC resistance and power transmission losses; the copper material exhibits minimal creep under long-term terminal compression, ensuring contact resistance remains stable for decades. High conductor roundness enhances terminal crimping consistency and mitigates potential hazards—such as poor contact—in critical power circuits.

Insulation thickness and eccentricity are monitored in real-time during the extrusion process, strictly controlling dimensional tolerances within specified limits. The XLPE material offers excellent resistance to water treeing, dielectric breakdown, and thermal aging, ensuring stable insulation performance during long-term continuous operation and frequent load fluctuations. The insulation structure meets requirements for long-term thermal stability in enclosed indoor installation environments.

These fill the voids between multi-core conductors, maintaining a consistently round overall cable profile; they reduce internal frictional stress during installation (pulling and bending) and prevent scratching of the internal insulation layer, while also retarding moisture penetration into the cable core in enclosed, humid environments.

The outer sheath offers resistance to surface abrasion, dust accumulation, and corrosion from weak acids and alkalis, while also withstanding minor mechanical scratches during conduit pulling and installation. It provides essential protection for indoor, conduit, and cable trench installations while maintaining excellent flexibility, facilitating complex routing within buildings.

• Standard low-voltage ratings: 0.6/1kV (highest demand in the indoor building power distribution market)
• Custom medium-voltage ratings: 8.7/10kV, 8.7/15kV, and 26/35kV; suitable for internal wiring in indoor substations and conduit-based main power transmission lines

• Covers a full range of specifications from 10mm² to 630mm², meeting requirements for small branch circuits, medium-sized distribution feeders, and heavy-load applications for large main lines.

• 3-core, 4-core, 5-core, 3+1 core, 3+2 core, 4+1 core; special asymmetrical core combinations and custom cross-sectional configurations can be manufactured based on customer construction drawings.

• Maximum long-term continuous operating temperature of conductor: 90°C
• Maximum short-circuit withstand temperature (duration ≤ 5 seconds): 250°C
• Minimum ambient temperature for installation: 0°C (standard type); -20°C (with custom low-temperature formulation)
• Design service life under proper installation and normal operating conditions: ≥ 30 years

• Minimum bending radius for multi-core YJV: ≥ 12 × cable outer diameter
• Minimum bending radius for custom single-core YJV: ≥ 15 × cable outer diameter

Structural Limitations: No built-in armor layer; not suitable for direct burial in soil or for installation environments subject to frequent impact, crushing, or rodent damage.

For a given cross-sectional area, YJV copper-core cables exhibit lower DC resistance than YJLV aluminum-core cables, resulting in reduced line losses during long-distance power transmission. Although heavier per unit length than aluminum-core cables, their superior terminal connection stability and transmission efficiency deliver long-term operational benefits for high-standard power supply projects.

• Highly stable terminal connection performance in critical power circuits

Electrolytic copper conductors virtually eliminate the creep deformation common in aluminum conductors, preventing issues such as gradual joint loosening and temperature rise during long-term operation. This characteristic makes YJV the preferred choice for critical circuits requiring uninterrupted, safe operation, including fire safety systems, emergency power supplies, and data center power distribution.

• Flexible, unarmored construction simplifies cable pulling and complex routing designs

Lacking steel-tape armor, YJV cables feature a smaller outer diameter and greater flexibility, facilitating passage through embedded wall conduits, floor sleeves, and narrow cable shafts. This effectively reduces installation complexity for intricate internal wiring layouts and shortens on-site installation time.

• Low line losses optimize energy efficiency in long-distance power distribution.

Copper conductors feature high conductivity, low resistance, and minimal transmission loss over long distances; they reduce heat generation in the lines, thereby lowering long-term energy costs associated with property operations and industrial power management.

• Flame-retardant ratings can be flexibly adjusted to meet building fire safety code requirements.

Customized products are available with various flame-retardant ratings (such as ZA, ZB, and ZC) to satisfy fire safety design requirements for high-rise basements, underground parking garages, main cables in shopping malls, and electrical systems in large public buildings, ensuring successful fire safety inspections.

• Compliance with international standards ensures high design compatibility.

The YJV specification system is widely recognized by global design institutes, third-party auditing bodies, and power authorities. Its ampacity ratings, installation specifications, and compatible terminal accessories adhere to mature, unified industry standards, helping to accelerate drawing reviews, scheme approvals, and project acceptance processes.

• Despite higher initial procurement costs, long-term O&M expenses are low.

Although the initial unit price is higher than that of aluminum-core YJLV cables, the stable operation of copper cables significantly reduces line failure rates, the need for joint maintenance, cable replacement frequency, and losses due to downtime. For projects with an operational lifespan exceeding 20 years, they offer superior overall economic benefits.

• High construction efficiency reduces on-site labor costs.

Excellent flexibility and a smaller outer diameter accelerate cable pulling through pre-installed conduits, reducing labor hours and helping EPC contractors effectively control total labor expenses for electrical installation subcontracts.

• Ample stock of standard specifications shortens order delivery times.

We maintain consistent inventory for commonly used cross-sections and core configurations, supporting small-batch trial orders, urgent project replenishment, and rapid bulk shipments to prevent schedule delays caused by material supply issues.

• Low failure rates reduce hidden project risks and liabilities.

Stable electrical performance minimizes post-completion complaints regarding circuit failures and maintenance disputes, helping developers and EPC contractors smoothly fulfill warranty obligations and enhance their market reputation for future bids.

• Clear substitution standards facilitate technical responses to tenders.

Tender documents often use YJV as the baseline model for technical comparisons with YJLV and YJLHV22; our technical team provides professional comparison analyses to help clients quickly prepare technical responses and optimize their proposals.

• Main and branch power distribution lines within high-rise residential buildings, office complexes, shopping malls, hospitals, and schools
• Embedded conduit installations, vertical runs in indoor cable shafts, and fixed distribution lines in enclosed cable trenches
• Emergency power supplies, fire safety circuits, dedicated elevator power lines, and other critical safety-related power circuits within buildings
• Power distribution for production workshops in industrial parks, auxiliary equipment power supply, and associated control wiring
• Indoor power distribution for data centers, telecommunications equipment rooms, and precision equipment requiring high power quality
• Internal wiring for indoor substations, cabinet input/output connections, and indoor medium-voltage busway layouts
• Electrical system upgrades and safety compliance retrofitting for existing buildings

Project Requirements: The scope covered internal main power distribution trunk lines and branch circuits for individual floors, including both fire emergency circuits and standard power supply circuits. Key requirements included long-term system stability, ease of cable pulling through pre-embedded conduits, and compliance with local fire safety acceptance standards.

Solution Implemented: 0.6/1kV YJV copper-core power cables (in various specifications) were used, with a total supply length of 106 kilometers; the configuration included large-cross-section "4+1" core trunk cables and smaller-cross-section branch cables.

Project Outcomes: The use of a flexible, unarmored cable design significantly improved the efficiency of cable installation within conduits, reducing the construction period by 11% compared to an armored cable solution. The copper conductors ensured the stable operation of fire emergency circuits, facilitating successful electrical completion acceptance and fire safety filing; no instances of abnormal heating or circuit failure occurred within five years of project handover.

Project Requirements: Replace aging wiring in the production workshop and supply power to production equipment using an enclosed cable trench layout; the system required low line loss, stable load-bearing capacity, and ease of future capacity expansion.

Solution Implemented: Utilized 0.6/1kV YJV 3×185+1×95mm² trunk cables paired with corresponding smaller-gauge branch cables, with a total supply length of 42 kilometers.

Project Outcomes: The low-resistance copper conductor design reduced energy consumption during full-load operation; standardized specifications simplified future capacity expansion and retrofitting, resulting in significant long-term electricity cost savings; the project successfully passed acceptance inspections by the plant's safety department and has consistently passed routine electrical inspections over the years.

Project Requirements: Indoor power distribution and wiring for community management facilities, water pump rooms, public lighting, and underground garages, requiring installation within pre-installed building conduits; involved a large order volume with technical specifications strictly adhering to municipal project completion filing requirements.

Solution Implemented: Supplied a large volume of YJV copper-core cables in various standard specifications, totaling 173 kilometers; specifically selected flame-retardant cables for garage fire safety circuits.

Project Outcomes: The product fully complies with municipal engineering acceptance standards, achieving a 100% pass rate in on-site inspections. Its standardized technical specifications streamlined the technical review process during project filing, and the product was designated by local construction authorities as the preferred cable model for internal wiring in subsequent community supporting infrastructure projects.

• Definition of Application Scope and Environmental Constraints

YJV cables lack an armored protective layer; direct burial in soil is strictly prohibited, as is installation in areas prone to mechanical impact, crushing, or frequent rodent damage. Suitable applications include installation within embedded conduits, enclosed cable trenches, indoor rack mounting, vertical routing in cable shafts, and internal wiring for indoor substations. For direct underground burial, the armored YJV22 cable should be selected instead.

• Requirements for Termination and Connection

Strictly adhere to crimping procedures compatible with copper terminals; ensure crimping pressure and compression length meet electrical construction standards to prevent poor contact and joint overheating caused by insufficient crimping. Copper conductor connections require no transition fittings, making installation simpler compared to aluminum-core cables.

• Control of Bending Radius During Cable Pulling

Cable laying must adhere to minimum bending radius specifications; excessive bending is strictly prohibited to prevent damage to the internal insulation layer, localized thinning, and potential insulation breakdown during long-term operation. Additionally, care must be taken to protect conduit openings to avoid scratching the cable sheath during the pulling process.

• Selection of Flame-Retardant Types in Accordance with Fire Safety Design Standards

For fire safety circuits, basements, large public buildings, and other critical fire safety areas, flame-retardant YJV cables (types ZA, ZB, or ZC) must be selected in accordance with fire safety design specifications; standard YJV cables are suitable only for general power distribution circuits not designated as critical for fire safety.

• Requirements for Standardized Storage and Transport Management

Cable reels should be stored in dry, well-ventilated warehouses and protected from prolonged exposure to direct sunlight and rain. During loading, unloading, and transportation, precautions must be taken to prevent severe impacts or crushing, which could cause cracking of the outer sheath or damage to the internal insulation layer, thereby compromising electrical safety performance.

• Comprehensive Certification and Documentation for Tenders

Products are manufactured in strict accordance with GB/T 12706 and IEC international standards. We provide—free of charge—complete factory qualification certificates, full sets of type test reports, third-party inspection reports, and editable technical data sheets, fully meeting the requirements for documentation review, submission approval, and project acceptance in global tenders.

• Rigorous Raw Material Selection and End-to-End Quality Control

We utilize 99.97% high-purity electrolytic copper rods and premium XLPE insulation materials. Key processes—such as stranding, insulation extrusion, and sheathing—feature real-time online monitoring to ensure stable DC resistance, consistent insulation thickness, and uniform batch performance, thereby minimizing the risk of rejection during incoming inspections for bulk orders.

• Flexible, Customized Solutions for Specialized Project Needs

We offer flame-retardant modifications (ZA/ZB/ZC ratings), custom production of medium-voltage cables (10kV/15kV/35kV), and fixed-length cutting services. Additionally, we provide customized packaging options—including wooden reels, steel reels, and export-grade packaging—tailored to client technical drawings and specific requirements.

• Factory-Direct Model with Stable Pricing and Flexible Order Minimums

With our own manufacturing facilities, we eliminate intermediary markups. We support small-batch trial orders to meet early-stage project validation needs while prioritizing large-volume orders in our production schedule. Ample stock of standard specifications ensures rapid dispatch and a quick response to urgent project requirements.

• Professional Electrical Engineering Team Providing Full-Lifecycle Technical Support

Our cable engineers offer free services including cable selection calculations, copper vs. aluminum solution comparisons, installation route optimization, remote and on-site technical guidance, and systematic post-sales quality tracking. Backed by a formal long-term quality warranty, we comprehensively address any technical or quality concerns customers may have after delivery.

• Extensive Experience in Exporting for Overseas Engineering Projects

We utilize proven export packaging solutions, possess robust capabilities for handling customs documentation, and leverage efficient global logistics channels. We have a solid track record of supplying construction and infrastructure projects across Southeast Asia, Central Asia, Africa, the Middle East, and Latin America, and are well-versed in local regulations regarding project inspection, acceptance, and compliance filing.