Power Transmission Cable
Product Overview
Industrial power transmission cables engineered for continuous electrical distribution in heavy industrial, utility, and renewable energy installations. Designed for fixed installations in cable trays, underground ducts, direct burial, and outdoor environments. Standard configurations support operating voltages from 1 kV up to 35 kV, utilizing stranded electrolytic grade conductors wrapped in thermosetting insulation compounds to withstand high thermal loads and short-circuit conditions.
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Key Features
High ampacity ratings achieved through optimized conductor compaction and low-resistance annealing processes.
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Thermal stability up to 90C continuous operating temperature and 250C short-circuit rating with XLPE insulation.
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Mechanical protection configurations featuring corrugated aluminum or galvanized steel wire/tape armor for high tensile and crush resistance.
03
Hydrophobic and chemical-resistant outer sheaths formulated for resistance to oils, acids, alkalis, and UV radiation.
04
Low smoke, zero halogen (LSZH) outer jacket options available for enclosed industrial and subterranean infrastructure.
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Product Construction
Conductor: Class 2 stranded annealed bare copper (IEC 60228 / ASTM B8) or compacted aluminum alloy (AA-8000 series).
Conductor Shield: Extruded cross-linked semi-conducting compound (for cables rated above 3 kV).
Insulation: Cross-linked polyethylene (XLPE) or Ethylene Propylene Rubber (EPR) applied via continuous vulcanization (CCV) extrusion lines.
Insulation Shield:
Strippable or bonded semi-conducting layer with a metallic copper tape screen.
Bedding / Inner Sheath:
Extruded PVC or PE layer providing a circular bed for metallic armor.
Armor:
Galvanized steel wire armor (SWA), galvanized steel tape armor (STA), or aluminum wire armor (AWA) for mechanical reinforcement.
Outer Jacket:
Heavy-duty PVC (ST2) or HDPE (ST7) compound extruded over the core assembly.
Applications
Utility Substations:
Primary underground power distribution networks connecting transformers and switchgear.
Renewable Energy Farms:
Medium-voltage collector circuits linking wind turbine generators and solar inverter stations to the grid substation.
Heavy Manufacturing Plants:
Main feeder lines supplying high-horsepower motor drives, smelting furnaces, and heavy-duty stamping presses.
Infrastructure & Tunnels:
Power transmission lines routed through subterranean utility tunnels, bridges, and railway electrification systems.
Available Options
Conductor Sizes:
10 mm2 up to 1000 mm2 (8 AWG to 2000 kcmil).
Voltage Classes:
0.6/1 kV, 3.6/6 kV, 6/10 kV, 8.7/15 kV, 18/30 kV.
Armor Variations:
Unarmored, Steel Wire Armored (SWA), Steel Tape Armored (STA), Aluminum Wire Armored (AWA).
Jacket Formulas:
Flame-retardant (IEC 60332-3), oil-resistant (ICEA S-73-532), termite-resistant, and low-temperature (-40C) compounding.
Drawing & Annealing: Multi-wire tandem drawing machines equipped with continuous resistance annealing to maintain elongation rates above 25 percent.
Extrusion Lines: Triple-extrusion crossheads utilizing dry-cure CCV lines under nitrogen pressure to eliminate micro-voids in insulation layers.
In-Line Monitoring:
Laser diameter gauges and high-frequency spark testers operating at line speeds to detect insulation anomalies instantly.
Routine Testing:
100 percent factory routine tests including conductor DC resistance measurement, high-voltage dielectric withstand test, and partial discharge measurement on medium-voltage reels.
Compliance Standards:
Manufactured in strict adherence to international electrical infrastructure benchmarks including IEC 60502, ICEA S-93-639, BS 6622, and AS/NZS 1435 specifications.
Customization
Custom core color-coding and numerical identification schemes for multi-core configurations.
Integration of fiber optic telemetry elements (composite power and control cables) for real-time temperature and strain monitoring (Distributed Temperature Sensing - DTS).
Special low-smoke, zero-halogen, and fire-resistant (mica glass tape barrier) constructions meeting IEC 60331 integrity requirements.
Customized drum lengths up to 2000 meters to minimize jointing requirements in long-run trenching projects.
FAQ
As one of the leading power transmission cable manufacturers and suppliers in China, we offer a wide range of products with superior quality. We warmly welcome you to buy cheap power transmission cable for sale here from our factory. For price consultation, contact us.
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