Low Voltage YJV22 Armored Cable for General Power Distribution & Fixed Installation

YJV22 (0.6/1kV) is a mainstream low-voltage armored power cable, featuring solid/stranded copper conductors, cross-linked polyethylene insulation, and galvanized steel tape armor. Specifically designed for 50Hz AC 0.6/1kV power distribution systems, it integrates high-quality conductive materials, high-performance insulation, and enhanced mechanical protection.

Unlike aluminum conductor YJLV22 and alloy conductor cables, this copper core cable boasts superior conductivity, stable overload capacity, and excellent long-term operational reliability. Its comprehensive performance meets the high standards required by industrial production, key civil buildings, municipal infrastructure, and engineering projects with stringent power supply continuity requirements. With its mature manufacturing process, broad compatibility, and excellent environmental adaptability, YJV22 has become an ideal choice for electrical engineers, engineering contractors, and professional procurement personnel in terms of reliability. It provides stable performance under various conditions, including underground, trench, bridge, and wall installations.

• Conductor: High-purity tightly stranded copper conductor, low resistivity, excellent ductility and mechanical strength, strong resistance to thermal deformation under long-term load.
• Insulation Layer: Cross-linked polyethylene (XLPE), with high dielectric strength, ultra-low dielectric loss, excellent heat resistance and anti-aging properties, effectively isolating current and resisting electrical breakdown.
• Inner Sheath: PVC protective layer, buffering friction between the insulation layer and the armor layer, preventing moisture and dust from penetrating the internal structure.
• Armor Layer: Double-layer hot-dip galvanized steel strip, forming a robust protective shell with strong compressive, impact, and tensile strength.
• Outer Sheath: High-strength modified PVC compound, wear-resistant, weather-resistant, ozone-resistant, and resistant to mild chemical corrosion, comprehensively protecting the cable body from external erosion.

• Rated Voltage: AC 0.6/1kV, Power Frequency: 50Hz
• Maximum Continuous Conductor Operating Temperature: 90°C
• Maximum Short-Circuit Withstand Temperature: 250°C, duration not exceeding 5 seconds
• Conductor Cross-Sectional Area Range: 10 mm² ~ 400 mm²
• Core Wire Configuration: Single-core, Dual-core, Triple-core, 3+1-core, 3+2-core, providing a full range of standard core wire combinations
• Minimum Bending Radius: Static Fixed Laying ≥ 12 × Cable Outer Diameter; Temporary Mobile Laying ≥ 15 × Cable Outer Diameter
• Permissible Ambient Temperature: ≥ 0°C
• Operating Temperature Range: -20°C ~ +70°C
• Power frequency withstand voltage: 3.5kV, continuous for 5 minutes, no breakdown
• Waterproof performance: Integrated sealed structure, suitable for long-term installation in damp underground and semi-outdoor environments
• Overload capacity: Copper conductor structure supports short-term overload operation without performance degradation
• Flame retardant performance: Standard flame retardant, customizable according to customer requirements
  

All products are manufactured, tested, and inspected in strict accordance with the national standard GB/T 12706. All technical indicators have been tested by authoritative third-party institutions and fully comply with the acceptance specifications for industrial buildings, civil buildings, and key municipal projects.

Categorized according to project attributes, laying methods, and environmental severity, this guide helps engineers and procurement personnel make accurate model selections and solution designs:

As a core application scenario, it is widely used for direct burial in ordinary soil, gravel layers, roadbeds, and green belts. The steel strip armor resists long-term soil compression, vehicle vibration, and friction from sharp objects. It is ideal for urban core power grid lines, suburban distribution trunk lines, pipe gallery wiring, and pipeline crossing projects. It is also suitable for centralized cable trenches in industrial and residential areas.

Prioritized for main power distribution lines in heavy machinery manufacturing, metallurgy, building materials, textiles, and large processing plants. Copper conductors ensure stable power supply to high-power equipment, and the armored structure can withstand frequent mechanical impacts, equipment vibration, and industrial dust. It is also widely used in large warehouses, freight stations, and industrial auxiliary power systems.

Suitable for main and branch circuits in high-rise residential buildings, large shopping malls, office complexes, exhibition halls, and service buildings. Reliable conductivity ensures uninterrupted power supply for elevators, air conditioning, fire protection systems, and daily electrical facilities. It is a standard configuration for mid-to-high-end civil building projects.

Used for power support lines in water supply plants, sewage treatment plants, urban pumping stations, traffic signal systems, and large-scale landscape projects. The weather-resistant outer sheath can withstand long-term outdoor environments, including rain, frost, and temperature changes. Complete qualification documents fully meet the stringent acceptance requirements of key municipal projects.

Suitable for cable trays, cable trays, and wall installations inside factories and buildings. Moderate flexibility can accommodate dense pipelines and complex bends. Can be used for outdoor wall wiring and fixed power supply for outdoor equipment in non-extremely corrosive areas.

Recommended for data center auxiliary power supplies, hospital uninterruptible power supplies, and power distribution lines for railway stations and airports. Excellent overload capacity and low failure rate effectively prevent power outages caused by load fluctuations, ensuring the safe operation of critical facilities.

High-purity copper conductors have lower resistivity compared to aluminum conductor cables. This results in less heat generation during long-term operation and provides higher current-carrying capacity for the same cross-sectional area, performing excellently in long-distance transmission and high-load conditions. It maintains stable electrical performance even under frequent current variations and short-term overloads.

The high-quality cross-linked polyethylene (XLPE) insulation layer has a uniform internal structure and extremely strong dielectric stability. Even after decades of continuous operation, it resists insulation aging and performance degradation. Low dielectric loss effectively reduces energy consumption during power transmission, enabling energy-saving operation of engineering projects.

Double-layer galvanized steel strip armor forms a comprehensive protective barrier, capable of withstanding strong external impacts, compression, tension, and friction during construction and daily operation. Galvanizing prevents rusting in humid environments, ensuring long-lasting protection and significantly reducing cable damage and replacement frequency.

The modified PVC outer sheath possesses excellent abrasion resistance, weather resistance, and resistance to mild chemical corrosion. It can operate stably in high-temperature, low-temperature, high-humidity, and dusty environments, and can withstand the weak acid and weak alkali components in common soils, adapting to most climates and geological conditions in different regions.

Copper conductors have stable thermal properties, reducing the likelihood of loose joints or overheating. Combined with high-quality insulation and sealing structure, the overall electrical failure rate of the cable is low, effectively reducing potential safety hazards such as short circuits and leakage, and improving the overall safety level of the power distribution system.

As a classic copper-core armored cable, it is fully compatible with mainstream copper terminals, connectors, and auxiliary accessories on the market. Installation techniques are widely available, and the cable's moderate flexibility facilitates laying in confined spaces and complex conduits, helping to expedite project progress.

Thanks to its scientific material combination and structural design, it has a design service life exceeding 40 years under standard operating conditions. Routine maintenance is simple, and the overall failure rate is significantly lower than that of ordinary aluminum cables. Although the initial purchase cost is higher, long-term operation and maintenance costs are effectively controlled, resulting in better overall economic benefits for long-cycle projects.

5.1 Engineering Design and Model Selection Principles

• Voltage Specification: This product is designed specifically for 0.6/1kV low-voltage AC systems and is strictly prohibited from use in medium- and high-voltage power systems.
• Cross-sectional Area Selection: Calculate the conductor cross-sectional area based on the actual load current, transmission distance, and overload requirements. For high-power equipment and long-distance lines, the cross-sectional area should be appropriately increased to control temperature rise and voltage drop.
• Environmental Screening: For coastal areas with severe salt spray, locations with strong chemical corrosion, or projects with extremely high fire protection standards, corrosion-resistant or flame-retardant reinforced products should be selected instead of standard products.
• Laying Density Reminder: When multiple cables are densely laid on cable trays or deeply buried in high-temperature soil, the current carrying capacity should be appropriately reduced to prevent heat accumulation.

5.2 On-site Laying and Construction Specifications

• Construction Temperature: Laying operations must cease when the ambient temperature is below 0℃ to prevent brittle cracking and damage to the PVC sheath and XLPE insulation layer.
• Bending Control: Strictly adhere to the specified minimum bending radius. Avoid sharp bends, twisting, and severe compression to prevent damage to the internal insulation layer.
• Traction Operation: Apply uniform traction force when laying the cable. Excessive tension can lead to conductor deformation, armor dislodgement, and interlayer separation.
• Direct Burial Standard: Lay a 100mm thick layer of fine sand above and below the cable, and cover it with concrete slabs or bricks to isolate it from sharp stones and hard objects.
• Terminal Connection: Use dedicated copper core cable terminals and follow standardized crimping and sealing procedures to ensure a secure connection and prevent localized overheating.

5.3 Procurement, Acceptance, and Warehousing Management

• Document Verification: During procurement, check complete qualification certificates, factory routine test reports, and type test reports to confirm that all products comply with national standards.
• Visual Inspection: Inspect the cable surface for cracks, scratches, and incomplete printing markings; verify that the model, voltage rating, and cross-section are consistent.
• Sampling Inspection: For large orders, conduct random sampling according to project acceptance regulations to perform withstand voltage tests and insulation resistance tests.
• Storage Requirements: Store cables in a dry, ventilated, and cool warehouse, wound on professional reels. Keep away from open flames, chemical solvents, and ground moisture. Prolonged open-air storage and direct sunlight are prohibited.
• Inventory Planning: Arrange procurement quantities reasonably according to the construction progress to avoid long-term static storage, which may affect sheath performance.
  

7. Advantages of Choosing YJV22 Cables

We use high-purity electrolytic copper and top-grade XLPE/PVC raw materials. Equipped with fully automated production lines and real-time online monitoring equipment, we conduct multi-stage inspections from raw material warehousing to finished product delivery. Each roll of cable undergoes comprehensive electrical performance testing before delivery to ensure the consistency and reliability of each batch.

We offer all standard cross-sections and core combinations. We also provide customized services based on project design and site environment, including fixed-length cutting, special surface marking, customized packaging, and performance enhancements to meet different engineering needs.

Our senior electrical engineers provide free pre-sales consultation services, including load calculation, specification optimization, and laying scheme design. During construction, we provide remote guidance and on-site technical support to help the on-site team solve problems related to wiring, terminal production, and layout planning.

We maintain ample inventory of all mainstream best-selling specifications to support urgent orders and bulk spot shipments. For large-scale phased projects, we develop customized production plans to ensure timely material supply and avoid construction interruptions.

We provide a complete set of matching copper terminals, cable connectors, laying accessories, and grounding components. Purchasers can complete one-stop sourcing, simplifying supplier management processes and reducing overall procurement and management costs.

We can provide a complete set of official documents, such as qualification certificates, test reports, and declarations of conformity. All documents fully comply with project bidding, filing, and acceptance requirements, saving purchasers time on document preparation and review.

We establish dedicated project files for large orders. Our after-sales team regularly tracks product operation status, responds efficiently to technical inquiries and product feedback, and provides comprehensive service support throughout the cable's lifespan.