Copper Core XLPE Insulated Steel Tape Armored Cable for Industrial & Infrastructure Power Transmission

The conductor uses Class 2 compacted stranded copper conductors conforming to IEC 60228 standards. The raw material is ≥99.97% high-purity electrolytic copper, with a compaction rate controlled above 92% to reduce conductor resistance and minimize heat loss during long-term operation. Optional core wire structures: single-core and three-core are available; cross-sectional area ranges from 16mm² to 300mm², with ultra-large cross-sectional area products customizable for special engineering needs. The DC resistance of the finished conductor is strictly controlled within the upper limits specified by national and international standards to ensure stable power supply under full load.

The insulation material uses high-temperature resistant cross-linked polyethylene. The rated insulation thickness conforms to the 8.7/15kV medium-voltage design specifications. The XLPE insulation layer can withstand long-term operating temperatures up to 90℃, and insulation breakdown will not occur when the short-circuit transient peak temperature reaches 250℃ within 5 seconds. The finished cable factory conducts partial discharge tests, controlling the partial discharge value below 10pC under rated operating voltage, effectively avoiding the hidden risk of insulation breakdown during long-term grid-connected operation.

The cable employs a double-layer galvanized steel strip wound armor structure. The steel strip thickness matches the cable's outer diameter, meeting the mechanical performance requirements for pressure resistance and puncture resistance. An inner PVC gasket isolates the insulated core wires from the steel strip, preventing scratches on the insulation layer during armoring. The outer sheath uses flame-retardant PVC compound, exhibiting excellent aging resistance. The rated long-term operating temperature range is -35℃ to +70℃, and it resists moderate-intensity acid, alkali, and chemical liquid corrosion in underground buried environments.

Rated Voltage: U0/U = 8.7/15kV

Power Frequency Withstand Voltage Test: 39kV/5min without breakdown after finishing.

Impulse Withstand Voltage: Passed 118kV lightning impulse test by factory inspection.

Long-Term Allowable Current Carrying Capacity: Corresponding standard current carrying capacity tables are provided for different cable specifications, offering engineers official current carrying capacity selection data for design reference.

The ZR series cables support customized ZA/ZB/ZC flame retardant grades, conforming to the GB/T 19666 flame retardant test standard. After passing the specified vertical burning test, the cable effectively limits the flame spread and rapidly self-extinguishes after the external ignition source is removed. In narrow cable trenches and tunnels, it effectively blocks the spread of fire along the cable line, reducing power outage losses caused by localized circuit fires. This is a core advantage for industrial and public construction projects with stringent fire protection requirements.

Cross-linked polyethylene (XLPE) insulation features low dielectric loss, stable dielectric constant, and no aging or cracking under alternating hot and cold cycling conditions. Compared to traditional rubber-insulated medium-voltage cables, its service life can be extended by more than 20 years under the same laying conditions. Low insulation attenuation ensures stable power transmission efficiency throughout its service life, reducing the project owner's subsequent power grid maintenance costs.

The double-layer steel strip armor has excellent resistance to compression, puncture, and tension, making it suitable for direct underground burial under most conventional geological conditions without the need for additional protective pipes. This avoids damage to the cable core material caused by foundation settlement or accidental excavation by construction machinery during later civil engineering projects, significantly reducing users' additional pipeline procurement and construction costs.

The finished cables are suitable for various scenarios including ordinary soil, slightly corrosive soil, indoor cable ducts, outdoor overhead pipelines, and tunnels. For outdoor installations, an UV-resistant outer sheath can be selected; for projects in high-latitude cold regions, a low-temperature resistant outer sheath can be customized to prevent brittle cracking under extremely low temperatures.

Mainly used for 10kV distribution network main lines, urban ring main unit incoming and outgoing cables, and rural power grid upgrading and renovation of underground transmission lines; a mainstream model for centralized bulk procurement by municipal power supply companies, replacing old unarmored cables and reducing underground cable failure rates.

Power supply cables for medium-voltage workshops in chemical manufacturing bases, metallurgical plants, and mining industrial parks; laying medium-voltage distribution circuits within factories. ZR flame-retardant performance meets industrial production fire safety standards, and the armored structure adapts to complex factory ground-buried environments and frequent mechanical construction.

Connecting cables for onshore wind farm booster stations, medium-voltage collection circuits for ground-mounted photovoltaic power stations, and internal distribution cables for energy storage power stations; new energy projects have strict fire protection standards and mostly adopt direct burial laying methods. The dual advantages of this product's flame retardancy and armored properties fully meet industry design requirements.

Core medium-voltage power supply trunk lines for large-scale integrated shopping malls, high-speed rail stations, airport terminals, municipal hospitals, and sports stadiums; public buildings have mandatory fire protection design requirements, and engineering design institutes tend to choose ZR-YJV22 8.7/15kV as the designated medium-voltage cable for fixed laying.

Auxiliary power distribution lines for urban subways, medium-voltage cable laying in integrated underground public utility tunnels, and centralized power supply systems for highway toll stations; the enclosed tunnel laying space has high requirements for the flame retardancy and mechanical durability of cables, making this product specification a standard designated cable type for tunnel engineering designers.

When designing buried cable laying, the soil thermal resistance value should be calculated based on local geological conditions to match the appropriate cable current carrying capacity, avoiding overload operation due to poor heat dissipation caused by dense soil; our company's official current carrying capacity calculation manual should be provided for designers to verify parameters.

The minimum bending radius during construction and laying should be controlled at more than 15 times the outer diameter of the finished cable to prevent excessive bending from causing breakage of the inner insulation layer; for vertical shaft laying, the spacing of the fixing clamps needs to be matched with the cable outer diameter specification to prevent the conductor from slipping under its own weight.

For dense multi-row cable laying in tunnels, the appropriate ZA/ZB/ZC flame retardant rating should be selected according to the tunnel's fire protection rating, and a third-party fire protection test report should be provided to meet the project acceptance requirements.

Please confirm the core material quantity (1 core/3 cores), flame retardant rating, and cross-sectional specifications in advance based on the project design drawings. Our technical team will provide free specification optimization suggestions to avoid wasting funds due to excessively high procurement specifications or project rework due to insufficient parameters.

For projects with phased construction and dispersed delivery needs, we support phased delivery arrangements to reasonably match the buyer's project construction schedule and reduce storage costs in the buyer's large-capacity warehouse.

When the project involves particularly corrosive soils or ultra-low temperature areas, please specify customized sheath material requirements before placing the order. The factory will adjust the outer sheath formula according to the target environment.

A local power engineering contractor procured over 28 kilometers of ZR-YJV22 8.7/15kV 3*185mm² flame-retardant armored cable for the substation's underground outgoing loop construction in 2025. Located in a suburban area with slightly corrosive red soil, the product's corrosion-resistant outer sheath and steel tape armor addressed the risks of underground soil erosion and external excavation. The project passed local power department acceptance on the first attempt, and the buyer established a long-term annual framework procurement partnership after project completion.

A new energy EPC company purchased a total of 62 kilometers of ZR-YJV22 8.7/15kV mixed-type cables, including 395/3150mm² specifications, for the buried circuit of a 200MW ground-mounted photovoltaic power station in 2024. Open-air construction often faces the risks of being run over by construction vehicles and punctured by sharp rocks. The armored structure reduced the cable damage rate on site to below 0.3%, and the ZB flame-retardant rating meets the fire protection specifications of the new energy park. The project was successfully connected to the grid as planned.

Free Pre-sales Technical Service: Our professional cable engineering team provides services such as parameter selection consultation, current carrying capacity checking, laying scheme optimization, and preparation of technical parameters for engineering bidding; we provide editable technical data sheets, certification scans, and test reports to help designers efficiently complete project design and bidding preparation. Customized non-standard cross-sections/special sheath formulations can be provided according to special project needs.

Direct factory supply eliminates middlemen's markups; bulk orders enjoy tiered preferential pricing, effectively controlling raw material procurement costs; stable copper and plastic raw material inventories provide a buffer against price fluctuation risks for long-term contract customers.

Flexible Production Planning: A complete inventory of standard finished cables can meet the rapid delivery needs of urgent orders; customized production lines can be arranged according to customer needs, shortening the delivery cycle compared to similar manufacturers.

After-sales Guarantee: The entire machine enjoys the national standard warranty period. On-site technical guidance can be provided during the construction of large-scale projects. If the product quality problem is caused by the factory, it will be replaced or reshipped free of charge within the agreed period to avoid losses due to work stoppage for the buyer.

We assist buyers in compiling a complete package of certifications, inspection reports, and factory qualification documents required for bidding on government and international projects, and provide formal factory authorization letters for bidding, thereby increasing the buyer's success rate in project bidding.