IEC & GB Certified Fixed Installation Copper Cabling for Commercial Building,

YJV is a mainstream unarmored fixed power cable that conforms to GB/T12706 standard and IEC 60502 international specification. Its conductor is solid/compacted high-purity electrolytic copper, the insulation layer is cross-linked polyethylene (XLPE), and the outer sheath is extruded PVC. Unlike the alloy-based YJHLV series and the armored YJV22 series, YJV eliminates the additional metal armor layer, achieving a compact outer diameter, lightweight layout, and convenient wiring performance. It is specifically designed for indoor concealed conduit, cable trench, cable tray wiring, and indoor shaft fixed power distribution applications. This product is widely used by architectural design institutes, real estate development EPC contractors, factory electrification renovation companies, and global electrical material importers. Our production line can customize insulation formulas, special sheath improvements, and non-standard core count configurations according to customers' electrical construction drawings; all finished products undergo continuous testing in the factory laboratory to meet the requirements of international bidding qualification audits and cross-border customs clearance procedures.

• Rated Operating Voltage: Standard low-voltage specification is 0.6/1kV; customizable medium-voltage series from 3.6/6kV to 26/35kV, suitable for internal power distribution circuits in large industrial substations.
• Conductor Material: Standard configuration is high-purity electrolytic copper ≥99.99%, compact round solid conductor; tin-plated copper core optional, suitable for high-humidity underground basements and coastal damp building projects; cross-sectional area ranges from 1.5mm² to 630mm².
• Core Combination Layout: Single-core, double-core, three-core, 3+1-core, four-core, 4+1-core and other core structures, covering single-phase household power distribution and three-phase industrial main power supply line design.
• Insulation Electrical Stability: XLPE material has an insulation resistance exceeding 1200MΩ·km at normal temperature and pressure. Low inherent dielectric loss effectively reduces reactive power consumption during long-term continuous full-load operation of large-area building power grids.

• Excellent Cabling Bending Performance: The compact overall cable size allows it to easily pass through pre-embedded narrow conduits and dense cable tray bends, significantly improving the efficiency of indoor concealed wiring construction compared to thick-walled armored cables.
• Compression and Scratch Resistance: The high-density extruded PVC outer sheath can withstand slight compression from concrete backfill and accidental sharp scratches during pipe threading, avoiding the surface damage commonly found in inferior thin-sheathed cables.
• Stable Structural Sealing: The continuous high-speed extrusion process ensures a tight bond between the insulation layer and the outer sheath, preventing interlayer separation under long-term alternating expansion and contraction due to ambient temperature.

• Long-Term Allowable Operating Temperature: The XLPE insulation layer allows for a continuous rated operating temperature up to 90℃, and the instantaneous short-circuit withstand peak temperature up to 250℃. Applicable ambient temperature range: -30℃ to +70℃
• Standard basic characteristics: Excellent moisture resistance, ozone aging resistance, and chemical corrosion resistance, able to withstand daily building environment erosion; optional high-density polyethylene (HDPE) outer sheath, low-smoke halogen-free modified sheath, and flame-retardant/fire-resistant upgraded version, suitable for high-rise public buildings and underground shopping malls and other projects with high fire protection requirements.

Compared to general-purpose YJV products on the market, its unique differentiated advantages include:

• Precise copper raw material control: Strict resistivity screening of copper rods effectively reduces conductor resistance deviation, thereby reducing long-term operating energy consumption for owners and industrial plant operators.
• Uniform insulation layer thickness control is achieved through a fully automated, enclosed extrusion workshop, eliminating the potential hazards caused by excessively thin insulation layers in certain areas and preventing localized overheating under continuous heavy loads.
• Flexible multi-grade derivative product selection: Under the same YJV infrastructure, multiple grades are available, including standard, flame-retardant, fire-resistant, and low-smoke halogen-free types, unifying the cable procurement model and simplifying on-site inventory classification for engineering procurement teams.

• Residential and Commercial Real Estate: Main power cabling for high-rise residential areas, concealed pre-buried cables in shopping malls, fixed power distribution in underground parking lots, and dedicated power loop layout for elevators.
• Factory Electrification Retrofit: Main incoming cables for new factory workshops, branch power distribution cabling for production lines, and overall power grid renovation for warehouses.
• Municipal Public Construction: Integrated power supply systems for large hospitals, integrated industrial park construction, indoor fixed cabling for subway auxiliary equipment, and electrical engineering for government office buildings.
• Urban Power Grid Indoor Distribution: Connecting cables for indoor distribution cabinets in urban community substations and internal cabling layout for compact urban substations.
• Special Public Space Projects: Low-smoke fireproof power cabling for underground commercial pedestrian streets and indoor fixed power distribution cabling for airport terminals.

All copper raw materials are sourced from top-tier certified copper smelters in China, possessing complete component testing and certification. Each batch of copper undergoes resistivity and purity sampling tests before cutting and stranding. Cross-linked polyethylene (XLPE) and polyvinyl chloride (PVC) resins use qualified petrochemical raw materials, without any recycled waste plastics. Finished YJV cables undergo random sampling tests for high-voltage withstand capability, aging performance, and dimensional tolerances before leaving the warehouse; any batches failing to meet the standards are scrapped and prohibited from shipment.

A professional R&D department strictly adjusts sheath materials, flame retardant ratings, and non-standard cross-sectional parameters according to the client's electrical design drawings, developing customized low-smoke halogen-free, fire-resistant, and termite-proof YJV cable products for special public construction projects. Diverse packaging solutions, including export-grade wooden barrels and small industrial coil packaging, can be configured according to on-site cutting habits to reduce cable waste and control overall project procurement costs.

We provide complete ISO9001 quality management system certification, GB third-party authoritative inspection reports, and IEC conformity certification documents, all in English. All certification documents can be directly submitted to overseas government tender qualification reviews and customs import clearance in the destination country, greatly simplifying the administrative approval process for cross-border purchasers.

• Cross-section Calculation Principle: Calculate the total design load current and actual wiring length based on the distribution diagram, reserving an 11%~21% cross-section margin to offset temperature rise under seasonal peak overload conditions. For long-distance trunk lines exceeding 200 meters, select larger specifications.
• Environmental Differentiation Level Selection: For construction in high-rise public buildings and underground enclosed spaces, select low-smoke halogen-free fire-resistant YJV specifications; for pre-embedded projects in basements and coastal high-humidity buildings, select upgraded HDPE moisture-proof sheathed YJV pipes.
• Layout matching recommendation: For dense pipeline layouts, choose multi-core integrated YJV pipes instead of separate single-core composite pipes to reduce pipeline occupancy and facilitate subsequent maintenance and repair.

During the cable pulling process, avoid sharp metal burrs and rough concrete blocks from scratching the cable sheath; keep the cable away from boiler pipes, ventilation exhaust vents, and other long-term continuous high-temperature heat sources to slow down the aging process of the sheath. Reserve appropriate expansion allowance at cable tray bends and vertical shaft layering locations to accommodate thermal expansion and contraction caused by seasonal temperature changes.

• Stable production and delivery cycle: Four dedicated YJV automated continuous extrusion production lines and ample raw material inventory ensure that standard specifications of products are shipped within 8-15 working days after deposit confirmation, avoiding project construction delays due to material shortages.
• Factory direct sales, no middlemen markups: For large EPC general contracting orders, we offer tiered bulk discount policies to help purchasing managers optimize project material budgets and improve overall project economics.
• Comprehensive professional technical support: Our in-house team of senior electrical engineers provides free pre-sales load calculation and specification matching consultation services, and offers remote technical troubleshooting guidance during on-site construction.
• Flexible cooperation mechanisms: We accept small-batch sample trial orders for early-stage performance verification before large-scale centralized procurement; long-term global distributors and engineering companies can sign annual fixed-price framework contracts to hedge against cost risks from international copper price fluctuations.