Low Voltage Steel Tape Armoured PVC Sheathed Cable for Industrial & Civil Construction Power Distribution

The YJV22-0.6/1kV 3×95+1×50 XLPE insulated double-steel-tape armored copper cable is a fixed-lay low-voltage trunk cable specifically designed for global building, industrial, and municipal power distribution projects. All manufacturing processes strictly adhere to the domestic standard GB/T12706-2020 and the international standard IEC 60502, and it is suitable for 50Hz AC transmission systems. Its five-layer composite structure effectively overcomes common engineering challenges such as underground mechanical impact, soil chemical corrosion, and long-term overload thermal aging, making it a mainstream designated product for electrical designers, engineering contractors, and bulk purchasing experts in the global building industry.

This cable employs a precision layered extrusion and winding production process, and rigorously selects raw materials. The conductor consists of three 95mm² phase cores and one 50mm² neutral core, manufactured using 99.99% high-purity electrolytic cathode copper that meets GB/T3956 Class 2 stranding requirements. Tight concentric stranding reduces internal stranding gaps, minimizing power loss due to the skin effect, while different core insulation color markings simplify phase sequence matching in the field. The XLPE insulation layer thickness tolerance is controlled within ±5%, exhibiting excellent hydrolysis and aging resistance, preventing insulation cracking under unstable load changes. A PVC inner lining fills the core gaps, securing the internal structure and buffering the compression of the outer armor layer. Double-layer hot-dip galvanized steel strips are spirally overlapped with a winding rate exceeding 16%, providing reliable compression resistance and rodent-proof performance, thereby reducing the investment in additional protective ductwork required for fully buried projects. Modified UV-resistant PVC outer sheath resists corrosion from acids, alkalis, mold, and underground sludge, and maintains stable physical properties under severe seasonal temperature fluctuations.

All finished cables undergo complete factory inspection before shipment. Standardized testing benchmarks guide engineers in parameter verification during project design and bid evaluation. At 20°C, the DC resistance of 95mm² copper core cable is ≤0.193Ω/km, and the DC resistance of 50mm² copper core cable is ≤0.387Ω/km. The addition of recycled copper to control long-distance line losses is prohibited. The continuous permissible operating temperature is up to 90°C, and it can withstand a peak temperature of 250°C for 5 seconds without structural damage during transient short circuits. Each finished cable undergoes a 3.5kV AC withstand voltage test for 5 minutes without breakdown; this is a mandatory factory inspection item. The minimum bending radius is limited to 15 times the cable's outer diameter to prevent damage to the internal cores due to excessive bending. The reference current carrying capacity is up to 234A for single-layer direct burial at 30°C; for dense multi-layer tray installations, the current carrying capacity needs to be reduced by 12%~18%. The applicable working temperature range for fixed installation is -20℃ to +70℃. It can be laid directly without preheating when the temperature is above -15℃. It is suitable for construction conditions with high humidity and coastal salt spray. The non-condensing humidity is below 95%.

Standardized construction guidelines help construction teams optimize cabling layouts and control overall project costs. For direct burial in trenches, a 130-170mm layer of fine sand should be used as the bottom bedding layer, followed by a 140mm layer of fine sand on top of the laid cables, and finally backfilled with fine soil. Sharp gravel and construction waste are prohibited in the backfill layer. Steel conduits must be pre-buried in road crossing sections to prevent damage from vehicle traffic. When laying multiple cables in enclosed metal cable trays, a 22% gap should be maintained between adjacent cables to facilitate heat dissipation. A 0.9-1.3m redundant cable length should be reserved at building expansion joints and settlement joints to avoid tensile fracture caused by structural displacement. Professional hydraulic crimp terminals are compatible with 95mm² and 50mm² conductors, using double-crimping, heated, and insulated tubing. Rough manual crimping with pliers is prohibited to prevent poor contact and terminal overheating. When the ambient temperature exceeds 35℃ or the cable is laid along a heating pipe, the design current carrying capacity should be reduced to 172A~188A to retain sufficient operational safety margin.

Compared to inferior, low-cost alternatives, this cable offers significant advantages in product performance, installation costs, and bulk purchasing. The high-purity copper core reduces daily power consumption due to line losses, thereby lowering long-term operating costs for factories and property management. It is designed for a service life exceeding 30 years under rated operating conditions. The superior XLPE insulation offers better thermal stability than traditional PVC materials, reducing the cost of later maintenance and complete cable replacement for power distribution systems. The built-in double-layer steel tape armor prevents accidental cable damage from excavation and rodent bites, becoming a core cost-saving point in the fully buried project bidding scheme. Automated production ensures uniform outer diameter dimensions, adapting to global standard wiring accessories without the need for custom fittings, thus saving additional costs. Customized fixed-length cutting reduces leftover materials on-site, and phased delivery matches project progress. Ample raw material inventory ensures stable delivery cycles, avoiding project shutdowns due to supply delays during peak construction periods. A single specification supports four installation methods, including direct burial, tray installation, conduit wiring, and concealed installation within walls, simplifying unified procurement and tender document preparation.

This product is widely used in four core engineering fields, and its stable field performance has been verified by actual project records. In the real estate and commercial building sector, it can be used as the main incoming cable connection box transformer and basement main distribution cabinet for high-rise buildings, shopping malls, and office buildings. It can also be used for underground power supply of parking lot fire-fighting equipment and central air conditioning auxiliary systems. In industrial park construction, it can be used as the main feeder connection distribution transformer and workshop distribution cabinet for machinery, food, and light industrial factories, as well as buried power grid cables for factory power layouts. Municipal renovation projects use this cable for upgrading low-voltage power grids in old communities, providing incoming lines to roadside distribution cabinets, powering urban parks, and underground traffic signal transmission. Public infrastructure such as schools, hospitals, and large logistics parks also use this cable for basement electrification upgrades and fixed underground power distribution layouts.

The contractor cancelled the original plan to purchase 13% of the high-density polyethylene (HDPE) pipes, relying on steel armor protection. The cables operated without failure for 21 months, subsequently leading to a long-term framework procurement contract.

The cables withstood the long-term high-temperature environment of the workshop, operating stably at full load for over three years, resulting in multiple additional orders.

The cables buried in the foundation backfill relied on steel armor to resist settlement compression and sharp rock penetration. Third-party testing before delivery confirmed that they fully met the bidding technical standards.

A comprehensive certification system and exclusive services for global buyers:

A complete set of qualification documents meets the bidding requirements for domestic and international engineering orders. All products hold valid CCC certification and are manufactured in accordance with GB/T12706-2020 standards; each batch of delivered products is accompanied by a factory inspection report, raw material certification, and product conformity certificate for project bidding archives. Customized IEC60502 certification can be provided according to the needs of international bidding projects, and third-party authoritative laboratory test reports can be provided upon customer request. Each roll of cable is marked with a unique batch number, and production and raw material records are archived for more than five years to support random inspections by the purchaser at any time.

Our professional pre-sales engineering team provides free current carrying capacity calculations, laying scheme optimization, and model matching services based on clients' CAD drawings, avoiding failures caused by mismatched bidding parameters. We accept small-batch sample orders for bidding purposes, while large-batch orders enjoy tiered discounts. Long-term cooperative clients enjoy priority production and flexible payment methods. Remote real-time technical support can solve on-site terminal and laying problems. After mutual consultation, on-site engineer guidance can be provided for orders exceeding 50 kilometers. Official quality assurance covers all shipped products. For confirmed non-human-caused quality defects, we will promptly arrange free replacement and emergency replenishment to minimize project losses for our clients.