8.7/15KV XLPE Insulated Unarmored Cable

8.7/15KV XLPE Insulated Unarmored Medium Voltage Power Cable

This unarmoured medium voltage (MV) power cable is engineered for fixed power transmission and distribution under 8.7/15kV rated system voltage (U₀/U=8.7kV phase-to-ground, 15kV phase-to-phase), fully manufactured per IEC 60502-2 international medium voltage cable standards.

1.The cable adopts a 8-layer standardized construction with scientific electric field grading design:

Class 2 compacted stranded copper/aluminum conductor (IEC 60228) for low DC resistance and uniform current carrying capacity

2.Extruded bonded semi-conductive conductor screen to smooth conductor surface and avoid electric field distortion

3.Cross-Linked Polyethylene (XLPE) insulation produced via CCV continuous vulcanization line; high-purity XLPE delivers ultra-low dielectric loss, anti-water treeing and long thermal aging lifespan

4.Strippable semi-conductive insulation screen integrated with insulation layer to eliminate air gaps

5.Helically wrapped copper tape metallic screen to ground induced voltage and suppress partial discharge

6.Non-hygroscopic PP fillers for round cable shaping and buffer protection

7.Non-woven binder tape to lock internal structure during bending and pulling

8.Extruded outer sheath (PVC/MDPE/LSZH optional) resisting UV, chemical erosion and ambient moisture

As an unarmoured variant, this cable excludes steel tape/wire armor, reducing overall weight and laying difficulty. It bears moderate traction during installation but is not applicable for sites with sharp mechanical impact or heavy external compression. All finished cables pass 100% in-line routine tests and periodic sampling hot-set, thermal cycling, lightning impulse tests in our ISO 17025 accredited lab, ensuring consistent electrical performance and 30+ year service life under standard operating conditions

Main Industry Sectors

Urban & Rural Medium Voltage Power Distribution Networks

Power Plant & Substation Transformer Feeder Circuits

Industrial Park, Heavy Manufacturing Factory Internal MV Power Lines

Commercial Complex, Large Shopping Mall & High-Rise Building Power Systems

Renewable Energy Projects: Wind Farm, Solar PV Station Grid Connection Lines

Mining Indoor Dry Tunnel Fixed Power Wiring

Municipal Infrastructure: Water Treatment Plant, Rail Transit Auxiliary Power

Typical Laying Scenarios

Fixed installation inside cable ducts, concrete trenches

Indoor wall-mounted, cable tray routing without heavy mechanical impact

Directly buried underground with soft sand backfill (no sharp rock extrusion)

Outdoor covered aerial pipeline laying (MDPE sheath variant)

why choose us

 

why choose our products

 

1. Full-Chain Quality Control & Authorized Testing Labs

We own an ISO/IEC 17025 accredited testing laboratory equipped with partial discharge detectors, high-voltage impulse testers and thermal aging ovens. Every raw material (copper rod, XLPE compound, sheath plastic) passes incoming inspection; triple extrusion, stranding, screening and sheathing processes adopt real-time online monitoring. Routine tests run on 100% finished cables, sampling type tests executed quarterly to align with IEC standard requirements, eliminating hidden quality risks for engineering projects.

2. Premium Raw Material Sourcing for Consistent Performance

Only oxygen-free copper rod and brand-certified anti-water-tree XLPE compound are adopted for production. Semi-conductive screen materials are fully compatible with XLPE insulation to prevent delamination under temperature fluctuation. We reject recycled plastic fillers that reduce insulation lifespan, guaranteeing stable electrical parameters for long-term grid operation.

3. Optimized Unarmoured Design for Cost-Efficiency

Our unarmoured structure removes redundant steel armor for non-mechanical-impact scenarios, balancing performance and total project cost. Compared with armored cables, our product reduces material cost, transportation weight and on-site laying hours without compromising core insulation and shielding safety.

4. Customization Capacity to Match Global Project Standards

We support flexible customization per client regional specifications: conductor material swap (copper/aluminum), LSZH low-smoke flame-retardant sheath for fire-sensitive buildings, single/3-core mixed orders, special marking printing, and non-standard cut lengths. We produce cables compliant with IEC, BS, DIN, ICEA, GB standards to serve Europe, Southeast Asia, Middle East, Africa and Latin American markets.

5. Stable Mass Production & Fast Lead Time

We operate 6 sets of advanced CCV triple extrusion production lines with monthly output capacity of 2,000km medium voltage cables. Standard stock models deliver within 7–10 working days; large bulk orders over 50km are scheduled with dedicated production lines to shorten lead time, avoiding project construction delays.

6. Complete Technical Document Support for B2B Buyers

We supply full technical packages free of charge: datasheets, IEC/CE test reports, factory audit certificates, installation laying guidelines, partial discharge test records and tender qualification documents. Our professional electrical engineering team provides free cable selection, ampacity calculation and laying scheme consultation for your MV distribution projects.

FAQ

 

 

01.What does 8.7/15kV marking mean for this unarmored cable?

U₀=8.7kV refers to the rated voltage between conductor and ground/metallic screen; U=15kV stands for phase-to-phase rated system voltage. This cable is designed for three-phase AC medium voltage distribution systems with maximum operating system voltage 15kV, complying with IEC voltage grading rules for MV power cables.

02.What is the difference between unarmored and armored 8.7/15kV XLPE cable?

Unarmoured cables omit steel tape/steel wire armor, lighter and cheaper, suitable for duct, indoor and soft backfill underground laying without sharp mechanical compression. Armoured variants add metal armor to resist rock extrusion, animal bite and heavy construction impact for direct burial in harsh soil. Select unarmoured if your laying environment has no severe external mechanical hazards to cut total project cost.

03.Can this cable be laid directly underground without pipe protection?

Yes, under conditions: the trench backfill must use fine sand without sharp stones/metal fragments, and ground vehicle heavy load should be avoided above the cable route. If the buried area has frequent construction or hard rock, we recommend laying inside HDPE cable ducts to prevent sheath damage.

04.What test reports can JSH Cable provide for tender submission?

We supply factory routine test reports for each shipment, third-party type test certificates issued by SGS/TÜV/KEMA, ISO 9001, ISO 14001, CE, RoHS and CCC certification documents, as well as full dimensional, electrical and thermal performance datasheets required for international project bidding.

05.How to choose the size of the sprocket?

The standard of sprockets can be determined according to different application requirements. The difference between metric sprockets and sprockets built to ANSI standards is that they use different units of measurement for chain specifications.

06.What is the maximum ampacity of the 3×150mm² 8.7/15kV unarmored copper cable?

Under 30℃ ambient air temperature and standard duct laying, the continuous ampacity reaches approximately 315A; when directly buried in 20℃ soil, ampacity is about 288A. Our engineering team can calculate precise ampacity based on your actual laying method, ambient temperature and circuit length upon request.

How To Cooperate With Us?

 

Our address

Fulien Building, Sanqiao Subdistrict, Weiyang District, Xi'an City, Shaanxi Province

Phone Number

+86 18802926539

E-mail

cable3@sxjshsm.com

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