XLPE Insulated Double Steel Tape Armored Medium Voltage Cable for 15kV Industrial & Grid Distribution

The YJV22 8.7/15kV 3×95mm² is a professional three-core medium-voltage power cable, specifically developed for AC 50Hz three-phase power systems with a rated voltage of 8.7/15kV. This model is manufactured strictly according to IEC 60502-2, IEC 60228, and GB/T 12706 standards, employing a mature composite structure suitable for high electric field strength, heavy-load operation, and complex outdoor/underground environments.

The 95mm² single-core cross-sectional area provides excellent high-current transmission capability, while double-layer steel tape armor enhances mechanical protection. This cable is designed for medium-distance, high-capacity transmission and trunk loop distribution, and is widely used in municipal power grids, heavy industry, energy facilities, and large-scale infrastructure, making it a mainstream choice for 15kV core power lines.

• Compacted Copper Conductor
• Inner Semiconductor Shielding Layer
• High-Strength Medium-Voltage Cross-linked Polyethylene (XLPE) Insulation Layer
• Outer Semiconductor Shielding Layer
• PVC Pad Layer
• Double-Layer Galvanized Steel Tape Armor
• Modified PVC Outer Sheath

Compacted Copper Conductor (3×95mm²): Utilizes Class 2 stranded high-purity oxygen-free copper, with optimized compaction process to reduce conductor gaps and resistivity, ensuring uniform current flow.

Double-Layer Semiconductor Shielding Layer: An extruded, one-piece shielding layer eliminates air gaps between the conductor and insulation layer, homogenizing the internal electric field and suppressing partial discharge.

Thickened Medium-Voltage Cross-linked Polyethylene (XLPE) Insulation Layer: Adopts a customized formula for 15kV voltage rating, possessing ultra-high dielectric strength and long-term thermal stability.

Double-Layer Galvanized Steel Tape Armor: Enhances pressure resistance, impact resistance, and rust prevention, suitable for direct burial and intensive construction sites.

Integrated padding and shell: blocks moisture, soil electrolytes and corrosive gases, forming a fully enclosed environmental protection system.

5.1 Excellent Dielectric Properties and Ultra-Low Partial Discharge The thickened cross-linked polyethylene (XLPE) insulation layer is perfectly matched to the high electric field environment of 15kV. Combined with a double-layer semi-conductive shielding layer, it effectively disperses the concentrated electric field. During long-term full-load and fluctuating load operation, partial discharge remains at an extremely low level, preventing insulation degradation, creepage, and breakdown. This ensures stable electrical performance of the 15kV trunk line throughout its entire service life.

5.2 High Current Carrying Capacity and Low Line Loss The 95mm² large-section copper conductor features low DC resistance and excellent heat dissipation. It can stably carry high currents for extended periods, fully meeting the power demands of high-power equipment and concentrated regional loads. Low power loss reduces heat generation during transmission, thereby reducing the daily operating energy consumption of the power distribution system.

5.3 Enhanced Mechanical Protection and Damage Resistance Double-layer galvanized steel strip armor significantly improves resistance to pressure, impact, and torsion. In scenarios such as direct burial, cable trench, and roadside installation, it can withstand ground subsidence, heavy vehicle traffic, accidental excavation, and external collisions. In locations with frequent construction and complex terrain, it can significantly reduce cable damage rates.

Exceptional Thermal Stability and Long-Term Anti-Aging Performance XLPE material maintains stable physical and electrical properties even under continuous operation at 90°C, without softening or cracking. The modified outer sheath resists aging caused by temperature changes, sunlight exposure, and natural weathering. Whether fully buried or partially exposed outdoors, the cable maintains stable performance for decades.

5.5 Comprehensive Environmental Adaptability The tightly fitted multi-layered structure forms a reliable waterproof barrier, preventing groundwater and humid air from penetrating the cable core. The special sheath formulation is adaptable to coastal saline-alkali soils, damp mountain soils, and corrosive industrial environments. It operates stably even in various harsh geological and industrial environments.

5.6 Multiple Safety Levels to Meet Various Standards Standard cables have inherent flame-retardant properties, preventing the spread of flames along the cable. Customized fire-resistant cables can maintain power supply to emergency systems during fires. Low-smoke halogen-free cables do not release toxic gases, produce minimal smoke, and meet stringent fire safety regulations for enclosed spaces and critical projects.

5.7 Standardized Dimensions, Easy Installation and Matching All external and structural dimensions conform to unified international standards, fully compatible with mainstream 15kV cable terminals, joints, fittings, and fixing accessories worldwide. No special customized accessories are required. Its moderate flexibility allows it to adapt to complex wiring environments such as cable trenches, conduits, and bends, simplifying construction and shortening the construction period.

6.1 Municipal Power Grid and Substations Used for outgoing lines from urban 15kV substations, inter-regional power trunk lines, old power grid renovation, and new urban power grid construction. Its excellent burial performance and high current carrying capacity make it an ideal choice for urban 15kV underground power systems.

6.2 Petrochemical and Heavy Chemical Industry Parks Serving as the main power supply line for chemical, petrochemical, and fertilizer plants. Connecting the power distribution room to large compressors, reactors, and high-power production equipment. Excellent corrosion resistance and chemical vapor resistance enable it to adapt to the special operating environment of chemical workshops.

6.3 Metallurgical, Building Materials, and Heavy Manufacturing Plants Used as 15kV main lines in steel plants, cement plants, and large machinery plants. Capable of withstanding long-term heavy loads and equipment vibration, possessing reliable mechanical and electrical performance, supporting 24-hour uninterrupted production.

6.4 Mining, Quarrying, and Onshore Oilfield Engineering Deployed as surface and underground 15kV transmission lines in mines, quarries, and oilfields. Strong pressure and impact resistance, capable of coping with rugged terrain, frequent mechanical operations, and complex soil conditions in field operation areas.

6.5 Renewable Energy Power Plants Used for collection and transmission lines and outgoing trunk lines in wind farms and large-scale solar power plants. Suitable for open-air installation and long-distance transmission, matching the operating characteristics of new energy power generation systems.

6.6 Large-Scale Transportation and Municipal Infrastructure Used for 15kV power distribution in long tunnels, highway service areas, railway hubs, and large port terminals. Meets the extremely high safety and reliability requirements of key national infrastructure projects.

For the design, installation, commissioning, and daily operation of 15kV medium-voltage projects, the key control points for engineers are outlined below:

7.1 Installation Methods and Protection Specifications Direct burial, cable trenches, buried conduits, and cable corridors are preferred. Long-distance overhead installations are not recommended. For sections crossing roads, railways, and building foundations, secondary mechanical protection using steel pipe sheaths is necessary. Use dedicated medium-voltage cable clamps and supports to prevent sheath wear.

7.2 Voltage and Load Matching Rules Confirm the system rated voltage is 8.7/15kV before design. Calculate the total load current based on the rated power of the connected equipment. Reserve sufficient current margin for impact loads and intermittent heavy-load equipment. Prolonged overload operation is strictly prohibited to prevent accelerated insulation aging and potential risks.

7.3 On-site Construction Operation Standards During cable laying, the specified minimum bending radius should be followed. Excessive bending will damage the shielding layer and insulation structure, and lead to partial discharge. Cables should be kept away from sharp metal objects and highly corrosive substances. When directly buried, graded fine sand should be laid on both sides of the cable, and protective bricks should be laid according to specifications.

7.4 Environmental Adaptability and Connector Handling In coastal saline-alkali areas, high-humidity areas, and heavily polluted industrial areas, special waterproof and corrosion-resistant 15kV cable joints should be selected, and all connection points should be completely sealed. Construction should be stopped when the ambient temperature is below 0℃ to prevent sheath embrittlement and breakage. All joints should be located in well-ventilated and easily inspected locations.

7.5 Pre-commissioning Testing and Routine Maintenance Before energizing, a power frequency withstand voltage test and a partial discharge test should be completed to verify insulation integrity. Sufficient maintenance space should be reserved in cable trenches and cable corridors. Regular inspection points should be set up for long-distance lines, and insulation resistance tests should be performed periodically to eliminate risks in advance.

8.1 Compliance with Multiple International Standards The products fully comply with international and national standards such as IEC 60502-2, IEC 60228, and GB/T 12706. The products have obtained mainstream certifications such as CE and ISO, enabling them to participate in bidding, supply, and application for medium-voltage engineering projects worldwide.

8.2 Full-Process Traceable Quality Control Incoming Material Inspection: Copper rods, XLPE granules, steel strips, and sheath raw materials undergo rigorous sampling inspection before warehousing. Online Real-Time Monitoring: Automated production lines monitor insulation thickness, shielding uniformity, and cable outer diameter throughout the entire process. Comprehensive Finished Product Inspection: 100% sampling inspection, including conductor DC resistance, power frequency withstand voltage, partial discharge, mechanical properties, and thermal aging tests. Non-conforming products are isolated and rejected.

8.3 Comprehensive Documentation Support A complete set of official documents is provided: factory inspection reports, certificates of conformity, and detailed test data sheets. All documents are used to support project filing, bid review, on-site inspection, and final acceptance.

8.4 Stable Batch Consistency Standardized production processes and mature technologies ensure that there are no significant performance deviations between different batches of products, perfectly matching the phased construction, multi-batch delivery, and long-term framework procurement models of large-scale projects.

Case 1: 15kV Power Grid Upgrade and Renovation Project in a City in Eastern China A city implemented a 15kV medium-voltage power grid upgrade and expansion project, purchasing 32,000 meters of YJV22 8.7/15kV 3×95mm² cable as the main distribution line for the area. All cables were laid under urban roads and municipal tunnels. After 10 years of operation, the line insulation was in good condition, with no abnormal partial discharge or mechanical damage. It provides stable power supply to residential areas, commercial areas, and public facilities, and has passed multiple official power grid acceptance tests.

Case 2: Power Engineering Project of a Large-Scale Integrated Petrochemical Plant A large-scale petrochemical base used this cable as the 15kV main distribution line between the main substation and the production workshop. The plant area has a continuous presence of chemical vapors, high humidity, and severe equipment vibration. The cable uses an anti-corrosion sheath and double-layer steel tape armor, enabling it to withstand the harsh working environment. The power system operates 24 hours a day, year-round, with an extremely low failure rate. The customer has signed a long-term strategic procurement agreement for subsequent factory expansion.

10.1 High-Quality Raw Materials and Reliable Overall Quality We use high-purity oxygen-free copper and specialized 15kV XLPE insulation materials. Comprehensive quality management is implemented throughout every stage of production. High product reliability reduces the risk of circuit failures and subsequent maintenance costs, providing a solid guarantee for the long-term safe operation of engineering projects.

10.2 Flexible Customization and Complete Product Support Based on the standard 8.7/15kV 3×95mm² model, we support customized production with different flame retardant ratings, fire resistance ratings, low-smoke halogen-free specifications, termite protection, sheath colors, and fixed cutting lengths. We also provide one-stop matching services for 15kV cable terminals, joints, and accessories to meet diverse design needs.

10.3 Professional Technical Team and One-Stop Pre-Sales Support Our experienced medium-voltage electrical engineers provide free services, including cable type selection, load current calculation, laying scheme optimization, and accessory matching. We can also compile the technical data and certification documents required for project bidding, helping customers optimize design schemes and save research time.

10.4 Ample Inventory and Flexible Global Delivery We maintain ample inventory of this mainstream specification to support large spot orders and urgent project needs. It can be mixed with other cable products to improve container utilization and control cross-border logistics costs. For long-term partners, we have framework agreements to ensure regular bulk deliveries and stable supply.

10.5 Complete Export Documentation and Streamlined Customs Clearance We are familiar with international trade rules and customs requirements in various regions. We can provide a complete set of certification documents, test reports, commercial invoices, and packing lists required for export, ensuring smooth customs clearance and timely delivery worldwide.

10.6 Professional After-Sales Service and Remote Technical Guidance Each order comes with detailed English installation guides and operating documents. For large medium-voltage projects, we provide free remote technical guidance during construction and cabling. Our service team responds quickly to product and application inquiries and provides practical solutions.