Copper Armoured Power Cable for Industrial Construction Power Transmission

Manufactured strictly in accordance with GB/T 12706-2020 (Chinese National Standard), fully compliant with IEC 60502-1 international low-voltage power cable standard; passed third-party type testing, including insulation aging test, mechanical impact test, flame retardant performance test, and DC withstand voltage test. Each batch of goods comes with a batch test report, factory inspection certificate, CE test documents, and national electrical product certification documents for project filing and acceptance.

• Conductor: T2 high-purity oxygen-free copper core, Class 2 tightly stranded copper conductor
• Main core cross-sectional area: 240mm² per phase, neutral core cross-sectional area: 120mm²
• Conductor DC resistance: Fully meets the upper limit requirements of GB/T 12706 standard; low conductor resistance reduces losses in long-distance transmission lines.
• Tightly stranded design: Smaller outer diameter, saving trench excavation space and cable tray installation costs.

• Insulation Layer: Cross-linked polyethylene (XLPE) insulation layer
• Rated Insulation Voltage Rating: 0.6/1kV Uo/U
• Excellent Heat Resistance: Long-term allowable operating temperature up to 90℃; short-circuit withstand temperature up to 250℃ for 5 seconds
• Low dielectric loss, stable insulation performance under high humidity and temperature fluctuations

• Filler and Liner: Non-hygroscopic flexible rubber filler + extruded PVC inner sheath
• Round cable molding eliminates internal gaps; prevents moisture penetration into the armor layer and copper core

• Armor Layer: Double-layer steel tape armor (STA)
• Continuously wound galvanized steel tape, protecting against compression, external mechanical damage, and rodent bites
• Uniform winding gap control prevents stress cracking during cable bending and laying

• Outer Sheath: PVC ST2 sheath (black weather-resistant PVC compound)
• Anti-aging, ozone-resistant, acid and alkali corrosion resistant, UV resistant, suitable for outdoor direct burial laying

• Rated Voltage: 0.6/1kV AC Low Voltage
• Permissible Ambient Temperature for Laying: ≥0°C (Preheating is required for laying below 0°C)
• Minimum Bending Radius During Installation: 15 times the cable outer diameter
• Current Carrying Capacity Reference Value: 435A for continuous current carrying capacity under direct underground laying; 380A for layered laying in cable trays
• Short-Circuit Thermal Stability: Passes the 250°C short-circuit temperature resistance test; no insulation layer melting or breakdown occurs.
• Waterproof Performance: Passes the vertical immersion test; suitable for damp underground foundations and water-bearing trench projects.

High-density compacted oxygen-free copper core with extremely low resistivity. Compared with ordinary semi-compact cables of the same specifications, the line power loss can be reduced by 6%~9% under long-term full-load operation. For the main power supply lines of large commercial complexes and factories that operate 24 hours a day without interruption, this feature can significantly reduce the long-term electricity consumption expenditure of project owners and is widely recognized by electrical design engineers, making it an ideal choice for matching energy-saving projects.

The cable adopts an integrated structure of cross-linked polyethylene (XLPE) insulation, double-layer steel tape armor, and corrosion-resistant polyvinyl chloride (PVC) outer sheath. Under standard buried laying conditions, its service life can reach over 30 years, far exceeding that of unarmored YJV cables without mechanical protection. The overall cable structure can resist soil corrosive substances, underground rock compression, accidental impacts from construction machinery, and damage from underground rodents, significantly reducing the cable maintenance and replacement costs for contractors.

No customized cable replacement is required, supporting various laying methods: direct underground burial, cable trench laying, underground pipeline crossing, indoor cable tray laying, semi-outdoor wall laying, underground crossing of roads and parking lots, etc. The uniform circular cable body reduces the difficulty of cable pulling during construction, shortening the electrical contractor's wiring construction cycle.

ZC/ZB/ZA flame retardant modifications are available upon request, meeting fire safety acceptance standards for locations such as shopping malls, hospitals, underground parking lots, chemical plants, and public transportation hubs. Flame-retardant cables maintain structural integrity within the specified burning time, preventing power outages due to fire spread and meeting the stringent fire safety design requirements of consulting electrical engineers.

Fully automated extrusion, stranding, and armoring production lines control the tolerances of cable outer diameter, insulation thickness, and steel tape winding within the upper and lower limits of national standards. This avoids rework due to irregular cable dimensions and the need for tray layout adjustments; the uniform conductor cross-section ensures consistent current carrying capacity for each batch of cables, eliminating the potential risk of overheating in certain circuit sections.

• Civil Building Engineering: Main power supply lines for high-rise residential buildings, main power lines for central distribution rooms in large shopping malls, main transmission lines for underground parking lots
• Industrial Manufacturing Engineering: Main power supply for factory workshops, main power supply for heavy machinery and equipment, underground buried power circuits in chemical industrial parks
• Municipal Infrastructure: Power system upgrades for urban communities, buried power lines in road greenbelts, main power distribution lines for public hospitals and schools
• Commercial Complexes and Logistics Parks: Centralized power supply for warehouses, integrated power transmission for office buildings, power lines for underground utility tunnels

A large commercial complex in East China used YJV22 0.6/1kV 3×240+1×120 cables as the main power supply cable for its basement. The construction environment had dense underground pipelines, vehicles had to pass over the cable trenches, and some soil had high moisture content. The double-layer steel-tape armor effectively resisted the pressure of foundation settlement and the impact of construction machinery during the later interior decoration period. The uniform current carrying capacity of the cable ensured a stable power supply for central air conditioning, lighting, elevators, and commercial equipment during peak electricity consumption periods such as holidays. The complete set of official certification documents provided by our factory successfully passed the acceptance of the municipal fire department and the power bureau on the first attempt.

A machinery manufacturing plant renovated its workshop's main power supply line, selecting this type of armored cable for direct burial between the plant's substation and the production workshop. The underground soil contained a small amount of chemical residues and scattered construction waste. The corrosion-resistant outer sheath and damage-resistant steel strip structure prevented the frequent cable faults that occurred when using unarmored cables in older circuits. After three years of operation, no faults such as insulation aging or core overheating have occurred, reducing the factory's power circuit maintenance labor and component replacement costs by more than 70%.

1. Laying Temperature Control: The ambient temperature for cable laying operations must not be lower than 0℃ unless preheating is performed to prevent cracking of the outer sheath during bending and pulling.
2. Bending Radius Control: For all cable bends and crossings through ducts, the bending radius must not be less than 15 times the cable's outer diameter. Forced sharp-angle bending is prohibited to avoid damaging the internal insulation layer.
3. Trench Laying Protection: For laying cables directly under roads, a concrete protective layer should be installed above the cable layer. Sufficient gaps should be maintained between multiple parallel cables to prevent heat accumulation and reduced current carrying capacity.
4. Cable Sealing Treatment: After cutting cable ends on-site, a dedicated cable sealing kit should be used to seal the cut surfaces of the insulation and armor layers to prevent underground moisture from penetrating the cable and causing a decrease in insulation resistance.

1. Before project acceptance: Check the factory batch test report, third-party type test certificate, and copper material inspection report.
2. After cable laying is completed: Conduct insulation resistance tests and DC withstand voltage tests. The acceptable insulation resistance value must not be lower than the standard threshold.
3. According to the design drawings, spare cable lengths should be reserved at both ends of the distribution cabinet to facilitate future circuit maintenance and cable joint replacement.

We provide a complete set of certification materials in one stop: national product certification, IEC conformity assessment report, factory batch inspection records, copper certificate of origin, CE certification documents, product parameter specification sheet, and construction and installation guidance manual. All documents are stamped with the factory's official seal, fully meeting the filing requirements of the power supply bureau, construction supervision unit, and fire protection acceptance department, avoiding project acceptance delays due to incomplete materials.

Our in-house electrical engineers provide free pre-sales technical support: circuit voltage drop calculation, load current carrying capacity verification, laying scheme optimization, cable specification matching suggestions, and flame retardant rating selection consultation. For large orders from municipalities and factories, technical engineers can provide remote on-site construction guidance video support to promptly solve laying and acceptance issues for the engineering team.

Long-term bulk supply contracts are in place with top-tier T2 oxygen-free copper suppliers, strictly prohibiting the use of recycled copper blends. Samples of each batch are taken for laboratory electrical performance testing before delivery; insulation thickness, armor tape winding, and outer sheath extrusion are monitored online in real time during production. Purchasing customers need not worry about inconsistent conductor resistance or unstable current carrying capacity between different batches of cables.

The automated integrated production workshop enables standardized batch production of YJV22 series armored cables. For batch orders of standard specifications such as 3×240+1×120, the factory maintains finished product inventory for rapid delivery; for customized flame-retardant, low-smoke halogen-free modified versions, production plans for key projects are prioritized to match project construction schedules.

A complete production batch coding traceability system is in place, with each cable roll marked with a unique batch code, production date, and specifications. This provides long-term quality assurance for large-scale engineering orders. If insulation performance defects are caused by non-human factors due to factory production issues during the warranty period, free replacement and reissue services are provided, reducing the risk of project losses for procurement and construction partners.

The YJV22 0.6/1kV 3×240+1×120 steel-tape armored cross-linked polyethylene power cable is a mature and mainstream low-voltage engineering power distribution backbone cable. With standardized technical parameters, strong environmental adaptability, and wide engineering compatibility, it has become the preferred model for many electrical design institutes, general contractors, and municipal power renovation projects. Our factory integrates raw material production, automated processing, and comprehensive testing and certification, committed to providing stable, compliant, and cost-effective armored power cables to global engineering procurement customers, supporting long-term, stable, and large-scale cooperation for various building, industrial, and municipal power projects.