YJV22 0.6/1kV 3×95+1×50 Copper Steel Tape Armoured Power Cable Direct Burial

The YJV22 0.6/1kV 3×95+1×50 is a low-voltage, three-phase four-wire steel-tape armored power cable designed for fixed installation, specifically for main power inlets and heavy-load three-phase distribution systems. It features three 95mm² phase conductors (for three-phase power transmission) and one 50mm² neutral conductor (for circuit balancing and safety grounding). Its construction incorporates compacted high-purity copper conductors, XLPE insulation, an inner bedding layer, double-layer overlapping galvanized steel-tape armor, and a weather-resistant PVC outer sheath; this combination delivers stable electrical conductivity, superior mechanical impact resistance, and excellent adaptability to underground environments. Widely adopted by electrical design institutes, this specific cross-sectional configuration is suitable for applications such as medium-capacity building power inlets, factory main feeders, municipal grid branch upgrades, and connections between photovoltaic (PV) arrays and box-type substations. The integrated steel-tape armor (STA) allows for direct burial without the need for protective conduit, striking an optimal balance between long-term operational safety and civil engineering budget control; consequently, it is one of the most frequently specified armored cable models in global tenders and engineering designs for medium-scale power infrastructure.

• YJ: XLPE (Cross-linked Polyethylene) Insulation — Features high dielectric strength and resistance to water-tree aging; ensures stable operation under fluctuating loads.
• V: PVC Inner Bedding — Isolates the armor layer from internal insulation components; prevents friction and electrochemical reactions.
• 22: Double-layer Galvanized Steel Tape Armor + PVC Outer Sheath — Provides robust mechanical protection; suitable for direct underground burial; withstands crushing, impact, and rodent damage.
• 0.6/1kV: Rated Phase-to-Ground/Phase-to-Phase Operating Voltage — Standard low-voltage distribution rating for civil and industrial power supply.
• 3×95+1×50: Three 95mm² cross-section main power conductors + one 50mm² cross-section neutral conductor — Standard three-phase four-wire distribution configuration.

• GB/T 12706.1–4:2020 – National standards for extruded insulation power cables (rated voltages 0.6/1 kV to 35 kV)
• IEC 60502-1, IEC 60502-2 – International standards for extruded insulation power cables
• IEC 60228 – Standard for Class 2 compacted stranded conductor construction
• GB/T 19666 – Standard for flame-retardant grades (customizable specifications for ZA, ZB, and ZC flame-retardant ratings)

Comprehensive certification package: ISO9001 Quality Management System certification, CCC mandatory certification, CE certification, CB certification, full-item type test reports, raw material inspection records, and third-party independent test certificates; fully compliant with requirements for international tendering, technical reviews, and project completion acceptance.

The three 95 mm² phase conductors utilize a compacted stranding process to enhance roundness and density, reduce DC resistance and transmission losses, and meet the demands of heavy-load, long-distance operation; the accompanying 50 mm² neutral conductor effectively balances the return current load, mitigating the risk of neutral line overload. The copper conductors exhibit minimal creep deformation under sustained terminal crimping pressure, ensuring stable contact resistance at connections over 30+ years of continuous operation and effectively eliminating circuit hazards commonly associated with aluminum conductor cables.

Each conductor core is extruded with an individual cross-linked polyethylene (XLPE) insulation layer; real-time wall-thickness deviation monitoring is employed during production to ensure strict dimensional tolerance control. The XLPE material effectively resists hydrolysis, thermal degradation, and water-tree aging caused by moist underground soil conditions, ensuring the integrity and stability of insulation performance during long-term underground operation and under conditions of frequent load fluctuations.

The inter-core filler design ensures the cable maintains a uniform, circular profile. This configuration alleviates internal compression and friction during installation (pulling and bending)—preventing scratches to the insulation surface—while also retarding moisture ingress in semi-enclosed cable trenches or underground environments.

Forms a complete barrier between the steel tape armor and the insulated core assembly; this prevents sheath abrasion during cable bending and installation, and inhibits potential electrochemical corrosion between the galvanized steel tape and internal components when the 3×95+1×50 trunk cable is laid in acidic, alkaline, or saline-alkali soil environments.

Utilizes a double-layer overlapping steel tape wrap structure capable of withstanding lateral soil pressure, accidental excavation impacts, sharp rock punctures, and rodent damage; this structural design allows for direct burial installation without the need for additional protective conduit.

The outer sheath offers resistance to soil chemical corrosion, UV degradation, ozone aging, and water penetration; it is suitable for outdoor laying, cable trenches, tunnel installations, and various underground operating conditions, ensuring the cable maintains structural integrity throughout its designed service life.

• U0/U: 0.6/1kV AC, 50Hz (standard low-voltage distribution rating)

• Phase conductors: 3 cores × 95mm² (Class 2 compacted stranded copper)
• Neutral conductor: 1 core × 50mm² (Class 2 compacted stranded copper)
• Core arrangement: Standard symmetrical three-phase four-wire layout

• Maximum permissible continuous operating temperature: 90°C
• Maximum withstand temperature during short-circuit (duration ≤ 5 seconds): 250°C
• Minimum permissible ambient temperature for installation: 0°C (standard version); low-temperature formulation available for installation in cold environments down to -20°C
• Rated design service life (under compliant installation and normal operating conditions): ≥ 30 years

• Minimum bending radius for this multi-core YJV22 3×95+1×50 cable: ≥ 12 times the cable's outer diameter.

Structural Characteristics Note: The armor layer withstands pressure and impact loads but cannot withstand significant axial tension; installation of this type of backbone cable via long-span overhead suspension is not recommended.

Calculated continuous current-carrying capacity under standard direct-burial conditions: Sufficient to handle the medium-to-large incoming power loads required for the main distribution systems of individual buildings or industrial facilities. Compared to YJLV22 aluminum-core cables of the same specifications, this cable offers lower line resistance, helping to reduce voltage drop and energy loss during long-distance backbone transmission.

• Matched 3×95+1×50 four-core specification eliminates the need for matching calculations during design and selection
• This fixed cross-section combination represents a mature, standard three-phase four-wire specification suitable for medium-capacity incoming power lines. Design institutes are spared the task of calculating conductor cross-section matching, thereby shortening the cycles for drawing reviews, scheme approvals, and technical consultations during the project bidding phase; its standardized current-carrying capacity and installation parameters are also widely recognized by power authorities and third-party auditing bodies.
• Integrated double steel-tape armored design enables cost-effective direct-burial installation
• The built-in mechanical protection layer eliminates the need for additional HDPE or PVC protective conduits in underground incoming line designs. This reduces the volume of civil works—such as excavation, conduit threading, and backfilling—simplifies on-site construction layouts, and shortens the overall construction schedule for building incoming line and municipal branch line renovation projects.
• Copper conductors ensure long-term stability at backbone connection points.
• As the building's main incoming feeder must withstand load fluctuations from the entire structure, the superior creep resistance of copper effectively prevents terminal loosening and temperature rise issues common with aluminum cables; this significantly reduces maintenance frequency and safety risks for critical power circuits after project handover.
• Customizable flame-retardant ratings to meet fire safety regulations.
• This specification (3×95+1×50) supports customization for ZA, ZB, and ZC flame-retardant grades, meeting regulatory requirements for applications such as basement incoming lines, underground utility tunnels, commercial complex backbones, and fire safety compliance for electrical systems in public buildings.
• Controllable voltage drop for medium-distance backbone transmission.
• The optimized conductor cross-section balances current-carrying capacity with line losses, making it suitable for medium-distance power transmission (100 to 400 meters) from municipal grid cabinets or package substations to building distribution rooms, thereby preventing excessive voltage deviation from affecting the normal operation of downstream electrical equipment.

• Standardized specifications mitigate the risk of price premiums associated with custom manufacturing.
• As a mature, mainstream product suitable for continuous mass production, it offers more stable unit pricing and shorter lead times compared to non-standard custom cross-sections, enabling procurement teams to lock in budgets more accurately during the bidding process.
• Direct-burial installation reduces total civil engineering expenditures.
• Eliminating the procurement, transport, and installation of conduits in the direct-burial route design lowers the civil engineering component of the total project cost, helping EPC contractors maintain healthier profit margins in their bids.
• Low maintenance costs during the operational phase offset the higher upfront investment in copper materials.
• Although the initial unit price is higher than that of equivalent YJLV22 aluminum-core armored cables, the extremely low rates of joint failure and line faults reduce expenses for routine inspections, emergency repairs, and partial cable replacements over a 30-year service life, delivering superior overall economic benefits for permanent infrastructure projects.

• Main incoming power cables running from municipal grid cabinets or box-type transformers to the internal distribution rooms of residential complexes, office buildings, shopping malls, hospitals, and schools
• Underground main distribution feeders (three-phase, four-wire system) in industrial parks, connecting substation outgoing feeder cabinets to workshop main distribution cabinets
• Underground cables connecting box-type transformers in medium-sized distributed photovoltaic power plants, as well as auxiliary power lines for wind farm step-up substations
• Branch underground power lines in municipal grid renovation projects, replacing aging overhead lines and old aluminum-core underground cables
• Power supply lines laid along roads, bridges, and municipal tunnels that are exposed to risks of external mechanical impact and crushing
• Medium-capacity main distribution lines fixedly installed in underground utility tunnels, traffic tunnels, and cable trenches (requiring resistance to mechanical damage)
• Main auxiliary power cables for centralized distribution systems in the basements and underground parking facilities of commercial buildings

Project Requirements: Installation of a single main incoming power cable from an outdoor municipal box-type transformer to the building's internal power distribution room. The route spanned 270 meters and utilized a direct-burial installation method. The cable was required to handle the building's total three-phase load while ensuring long-term, stable operation, and had to pass local utility completion inspections and fire safety filing requirements.

Solution Implemented: YJV22 0.6/1kV 3×95+1×50 copper-core armored power cable was selected, with a total supply length of 310 meters. To meet fire safety compliance standards, a ZC-rated (flame-retardant) product was specified.

Project Outcome: The selected 3×95+1×50 cable specification fully met the calculated current-carrying capacity requirements for the total load. The steel-tape armored structure simplified the direct-burial installation process by eliminating the need for conduit, resulting in a 26% saving in civil engineering costs compared to non-armored alternatives. Following delivery, the system has operated stably for four years without joint overheating or line faults, and the cable specification has been adopted as the standard for incoming power lines in subsequent real estate projects undertaken by the company's subsidiaries.

Project Requirements: Replace aging incoming power cables in the production area; lay cables underground along the facility's green belt; connect the outdoor distribution cabinet to the workshop's main switchgear; accommodate a moderate total load; ensure low line losses and facilitate future capacity expansion.

Solution Implemented: YJV22 0.6/1kV 3×95+1×50 armored trunk cable (total supply length: 450 meters).

Project Outcomes: Copper conductors effectively minimized long-distance voltage drop and energy consumption under full load; the selected specifications provided ample load headroom for future equipment expansion; the armored structure prevented accidental cable damage during subsequent site road renovations; the project successfully passed internal safety inspections and has consistently passed annual routine electrical inspections.

Project Requirements: Underground connecting cables needed to be laid between on-site box-type substations and centralized combiner cabinets; the project required a large total volume of cable; individual substation capacity was moderate; direct burial in agricultural soil posed risks of rodent damage and soil compression; and compliance with the technical specifications of the tender was strictly required.

Solution Implemented: Bulk supply of YJV22 0.6/1kV 3×95+1×50 cables, totaling 1,240 meters in length.

Project Outcomes: The products fully met the local grid company's acceptance standards for grid connection, achieving a 100% pass rate in on-site inspections; the use of a single, unified specification streamlined the technical review process and simplified on-site installation management; the steel-tape armored structure reduced the frequency of post-installation cable faults and maintenance, helping the company secure framework supply status for the client's subsequent batches of PV projects.

• Load Calculation Prior to Final Selection
• Before finalizing the choice of the YJV22 3×95+1×50 cable, calculations for total load, current-carrying capacity verification, and voltage drop over the transmission distance must be completed. Our technical team offers complimentary customized current-carrying capacity charts and selection verification reports to prevent operational risks arising from oversizing or insufficient current-carrying capacity.
• Standardized Requirements for Copper Terminal Crimping
• Crimping operations must utilize the matching 95mm² copper terminals for phase conductors and 50mm² copper terminals for the neutral conductor. Crimping pressure and compression depth must be strictly controlled in accordance with electrical installation standards to prevent poor contact and abnormal temperature rise at the joints caused by inadequate crimping. As copper-to-copper connections do not require transition fittings, on-site installation is simpler compared to aluminum-core cable terminations.
• Bending Radius Control During Laying and Routing
• Throughout the cable laying process, the bending radius must be maintained at no less than 12 times the cable's outer diameter. Sharp right-angle bends are strictly prohibited to prevent thinning or cracking of the internal insulation layer and to avoid the risk of dielectric breakdown during long-term operation. When pulling cables through conduits, protective chamfered sleeves must be installed at the conduit openings to prevent scratching the outer sheath.
• Requirements for Mandatory Grounding of Steel Tape Armor
• Reliable grounding must be implemented at both ends of the double-layer steel tape armor in accordance with local electrical codes; this prevents the accumulation of induced voltage within the metal armor and eliminates potential electrical safety hazards.
• Limitations on Environment and Installation Method
• This YJV22 3×95+1×50 cable is suitable for direct burial, cable trench, and tunnel installations; it is not suitable for long-distance overhead tensioned installation or vertical suspended installation subject to significant axial tensile forces. For underwater installation, the YJV32 steel-wire armored cable should be used instead.
• Standardized Storage, Transport, and Handling
• Cable reels must be stored in a dry, well-ventilated warehouse, avoiding prolonged exposure to rain or direct sunlight. During loading, unloading, and transport, care must be taken to prevent severe impacts, crushing, or dropping of the reels, as this could cause cracking of the outer sheath or damage to the internal structure, thereby compromising insulation safety.

• Comprehensive Documentation Package for Tenders
• All products are manufactured in strict accordance with GB/T 12706 and relevant IEC international standards. We provide a complimentary, complete set of documents—including factory qualification certificates, comprehensive type test reports, third-party inspection reports, and editable technical data sheets—fully meeting the requirements for documentation review, bid submission, and project acceptance in global tenders for this 3×95+1×50 specification.
• Rigorous Raw Material Selection and End-to-End Batch Quality Consistency Control
• For the production of this specification, we utilize high-purity electrolytic copper rods (99.97% purity) and premium XLPE insulation materials. Core processes—such as stranding, insulation extrusion, armoring, and sheathing—are equipped with real-time online dimensional monitoring systems. These ensure stable conductor DC resistance, uniform insulation thickness, and consistent electrical performance across production batches, thereby minimizing the risk of rejection during incoming inspections for large-scale tender procurement orders.
• Flexible, Personalized Customization for Specific Project Requirements
• Based on technical drawings and specific project needs, we offer customization services for YJV22 3×95+1×50 cables, including ZA/ZB/ZC flame-retardant modifications, upgrades to low-smoke zero-halogen (LSZH) outer sheaths, cut-to-length services, and specialized packaging options (such as wooden reels, steel reels, or export-grade packaging).
• Direct-from-Manufacturer Model: Stable Pricing and Flexible Order Requirements
• With our own manufacturing facilities, we eliminate intermediary markups. We support small-batch sample trials to meet preliminary project qualification needs and prioritize production for large-volume orders. We maintain ample finished-goods inventory for mainstream specifications like YJV22 3×95+1×50, enabling rapid shipment to meet urgent project delivery schedules.
• Comprehensive, Full-Lifecycle Technical Support for Electrical Engineering
• Our team of professional cable design engineers provides free services, including load calculations, ampacity verification, cost comparisons between copper and aluminum solutions, installation route optimization, remote or on-site technical guidance, and systematic after-sales quality tracking. Backed by a formal, long-term product warranty, we eliminate concerns regarding technical specifications and quality for procurement and engineering teams.
• Extensive Experience in Cross-Border Export Projects
• We possess mature export packaging solutions, comprehensive capabilities for preparing customs clearance documentation, and efficient, collaborative global logistics channels. We have a proven track record of reliable supply for projects involving building power supply, municipal upgrades, and new energy infrastructure across Southeast Asia, Central Asia, Africa, the Middle East, and Latin America. Regarding this specific mainstream cable specification, we are well-versed in the project inspection, acceptance, and regulatory compliance requirements of various overseas markets.