Armored Power Cable for Industrial & Construction Projects

YJV22 0.6/1kV 3×240+1×120 steel-tape armored power cable is designed for low-voltage heavy-load power transmission and conforms to international electrical standards and mainstream regional industry specifications. This cable adopts a classic four-core structure: three 240mm² phase conductors paired with one 120mm² neutral conductor, perfectly meeting the three-phase four-wire power supply requirements of large-scale projects.

The entire cable uses high-purity oxygen-free copper conductors, cross-linked polyethylene (XLPE) insulation, an inner buffer layer, double-layer steel tape armor, and a durable PVC outer sheath. Its compact and reasonable layered structure integrates electrical performance, mechanical protection, and environmental adaptability, making it an ideal choice for fixed power transmission under harsh working conditions.

This cable utilizes optimized material selection and mature manufacturing processes, exhibiting superior stability, durability, and economy compared to ordinary power cables, fully meeting the long-term operational needs of engineering projects:

The high-purity oxygen-free copper conductor possesses extremely low resistivity and uniform current distribution, maintaining stable current-carrying capacity even under continuous heavy load operation, effectively reducing Joule heating and power transmission losses. For long-distance power distribution lines, this advantage translates into lower operating energy consumption and higher power transmission efficiency, resulting in tangible cost savings for project operation in the long run. Simultaneously, the double-layer semi-conductive shielding layer combined with cross-linked polyethylene (XLPE) insulation eliminates the risk of partial discharge, ensuring stable electrical performance even under fluctuating loads.

Double-layer steel tape armor is the core protective design of the YJV22 series cables, effectively resisting external compression, impact, squeezing, torsion, and rodent bites. When buried underground or laid in cable trenches, the armor layer can withstand ground settlement, construction collisions, vehicle crushing, and external mechanical friction, preventing accidental cable damage. This significantly reduces the frequency of circuit faults and maintenance work, extending the overall service life to over 30 years under standard operating conditions.

XLPE insulation material has far superior heat resistance and anti-aging performance compared to traditional PVC insulation materials. Even at long-term operating temperatures of 90℃, it will not soften, deform, or crack, maintaining stable insulation performance for decades. The outer PVC sheath is infused with anti-aging additives, resisting UV corrosion and natural aging, adapting to long-term outdoor exposure and underground dark environments.

The integrated sealed structure provides reliable waterproof and moisture-proof performance, preventing groundwater and humid air from penetrating the cable core. The special sheath formula resists weak acids, weak alkalis, and common soil chemicals, making it suitable for various geological environments, including clay, sand, and mixed soils. The entire cable can operate normally under the complex natural conditions of most temperate and subtropical regions.

The standard flame-retardant design limits the spread of flames along the cable in the event of an accidental fire, preventing small fires from escalating into large-scale electrical fires. It complies with fire safety codes for public buildings, industrial parks, and municipal engineering projects. Custom flame-retardant versions are also available, which can maintain power supply for a certain period in the event of a fire, ensuring power supply for emergency equipment.

The cable's reasonable stiffness and bending performance make laying and wiring easier. The standardized outer diameter and uniform appearance are compatible with common cable accessories, fittings, and terminals on the market. No special components are required, simplifying the construction process and shortening project timelines.

This 3×240+1×120 YJV22 armored cable is a mainstream large-core low-voltage power cable, primarily used in main power lines and heavy-duty branch circuits. The following are detailed application areas and key design and construction points that engineers must pay attention to:

• Municipal Power Grid Engineering
  Urban underground main distribution lines, community substations, road and tunnel power supply systems, urban power grid renovation and expansion projects. Its excellent pressure resistance and waterproof performance make it the standard choice for municipal buried cabling.
• Large Industrial Parks and Manufacturing Plants
  Main power supply lines for production workshops, heavy machinery, assembly lines, and central control rooms. Suitable for complex workshop environments with frequent vehicle traffic and mechanical contact.
• Commercial and Public Buildings
  Main power supply trunk lines for shopping malls, office buildings, exhibition centers, stadiums, and integrated commercial districts. Meets the stringent fire safety and stable power supply requirements of high-density public places.
• Residential Community Engineering
  Centralized power supply trunk lines for large residential areas, high-rise building complexes, and supporting community facilities. Ensures safe and uninterrupted power supply for thousands of households.
• Infrastructure and Special Projects
  Airports, railway stations, ports, mines, and outdoor fixed transmission lines. Suitable for outdoor open-air and harsh on-site operating environments.

• Laying Method Selection
  Prioritize direct burial, cable trenches, cable ducts, and conduit laying. Long-distance overhead laying is not recommended without dedicated fixing and protective accessories. For buried sections crossing roads, additional protective pipes or concrete covers should be added for secondary reinforcement.
• Load Calculation and Matching
  Before design, the total three-phase load current should be strictly calculated based on the power of the equipment on site. Appropriately match the cable's current-carrying capacity and prohibit long-term overload operation. For equipment with intermittent impact loads, sufficient current margin should be reserved to avoid performance degradation.
• Construction and Laying Specifications
  During traction and laying, strictly control the bending radius to avoid insulation cracking and shielding damage. Keep cables away from sharp metal edges and highly corrosive substances. For direct burial, fine sand should be laid at the bottom and top of the cable, and protective bricks should be placed on top according to construction specifications.
• Environmental and Joint Treatment
  In areas with high soil moisture or severe acid/alkali corrosion, waterproof and corrosion-resistant cable joints should be used, and all connecting parts should be sealed. In cold regions, construction should be stopped when the ambient temperature is below 0°C to prevent sheath embrittlement and breakage.
• Line Layout and Maintenance Provisions
  Reserve space for inspection and maintenance in cable trenches. For long-distance lines, intermediate inspection points should be reasonably set up to facilitate routine inspections and troubleshooting later.

For cross-border engineering procurement and large-scale domestic projects, product compliance and stable batch quality are core evaluation indicators. Our YJV22 series cables have passed comprehensive testing and certification, eliminating project acceptance and compliance risks:

• Compliant with international IEC standards and mainstream regional electrical specifications, suitable for global project bidding and delivery.
• Strict raw material incoming inspection: All copper, insulation, and sheath materials are tested before production to ensure consistency in raw material quality.
• The entire production process is monitored online and utilizes automated production lines to minimize human error and ensure consistency in the structure and performance of each batch of cables.
• Finished products undergo 100% sampling inspection, including conductor DC resistance testing, power frequency withstand voltage testing, insulation resistance testing, mechanical tensile testing, aging testing, and flame retardancy testing.
• Complete supporting documentation: Includes factory inspection reports, qualification certificates, test data sheets, and installation manuals for project filing, bidding, and final acceptance.
• Stable batch consistency: No significant performance deviations between different production batches, achieving unified standards across multiple project phases.

A provincial capital city launched an underground power grid upgrade project, replacing aging overhead lines with underground cables. The project used over 12,000 meters of YJV22 3×240+1×120 armored cable as the city's main power distribution line. The cable was laid under city roads and green belts. After six years of operation, no problems such as water seepage, compression damage, or insulation aging occurred. Stable power transmission fully guaranteed the daily electricity needs of urban residents, commercial areas, and municipal facilities, and successfully passed multiple official power grid inspections.

A large heavy machinery manufacturing plant built a new production base and selected this cable as the main power distribution line for stamping, forging, and large assembly equipment. The workshop experiences frequent forklift operations and significant mechanical vibration. With its double-layer steel strip armored structure, the cable effectively resisted rolling and impact. 24-hour uninterrupted power supply ensured the stable operation of all production lines, significantly reducing downtime due to circuit failures and improving overall production efficiency. The client has established a long-term bulk purchasing partnership with our company in preparation for future factory expansion.

• 6.1 Superior and Stable Quality, Rigorous Quality Management
  We use top-grade raw materials and fully automated production and testing equipment. Each production stage follows standardized operating procedures. From raw material warehousing, manufacturing, finished product testing, and delivery, strict quality control is maintained throughout. The high stability of our products reduces post-project maintenance costs and potential risks.
• 6.2 Complete Specifications and Customization Services
  We offer a full range of YJV22 armored cables, covering various core counts and cross-sectional specifications. In addition to the standard 3×240+1×120 specification, we also support personalized customization: different flame retardant ratings, fire resistance types, special sheath colors, low-smoke halogen-free formulas, and lengths customized according to project requirements. One-stop product matching meets diverse engineering needs.
• 6.3 Professional Technical Team and Free Pre-sales Support
  Our senior electrical engineers provide free professional services, including cable type selection guidance, load current calculation, laying scheme optimization, and accessory matching suggestions. We can also compile the technical data and parameter documents required for project bidding and scheme design, helping your team save time on technical research
• 6.4 Ample Inventory and Flexible Delivery Options
  We have a large inventory of standard specifications to meet the needs of bulk orders, spot delivery, and urgent orders. We support mixed packaging with other cable models to optimize container utilization and reduce logistics costs for cross-border procurement. We also accept long-term framework agreements, undertake periodic engineering orders, and arrange regular bulk deliveries.
• 6.5 Complete Documentation and Smooth Cross-Border Cooperation
  We can provide a full set of certification documents, test reports, commercial invoices, packing lists, and other customs clearance documents required for international trade. We are familiar with export procedures in multiple regions, ensuring smooth customs clearance and timely delivery.
• 6.6 Comprehensive After-Sales Service and On-Site Guidance
  For any product-related issues that arise during subsequent use, our service team will respond promptly and provide professional solutions.