XLPE-HDPE Tree Cable Aluminum 25kV 1x50m㎡
The XLPE-HDPE Tree Cable Aluminum 25kV 1x50mm² is engineered for superior performance in medium-voltage overhead distribution networks, delivering exceptional reliability and long-term durability. Designed for challenging environments such as forested regions and urban areas, this cable ensures consistent power supply while minimizing maintenance and unplanned outages. Constructed with high-conductivity aluminum alloy 1350 wires, the cable features a round compacted conductor with class 2 stranding, achieving a minimum conductivity of 61% IACS and tensile strength of at least 130 MPa. Optional conductor shielding with an extruded semiconductor thermosetting compound is available for enhanced performance in 15kV and 25kV applications. The inner insulation is made from cross-linked polyethylene (XLPE), supporting continuous conductor operation at 90°C, and meeting ICEA S-121-733 physical standards. The robust outer cover is composed of high-density polyethylene (HDPE), offering outstanding resistance against weathering, UV radiation, mechanical abrasion, and electrical sparking up to 2.75kV. Standard cables come in gray with sequential metering markings in accordance with ASTM B230, while blue cables are recommended for harsher conditions requiring spark resistance above 5kV.
- Standards ASTM B230, ASTM B232, ICEA S-121-733
Construction
Technical Specifications
Quality Control
Application
Construction
XLPE-HDPE Tree Cable Aluminum 25kV 1x50mm² Constrution
Conductor
Formed from aluminium alloy 1350 wire, round compacted, class 2 stranding, according to ASTM B230, conductivity MIN. 61% IACS, optionally lockable, tensile strength MIN 130 MPa.
Conductor Shielding
Extruded semiconductor thermosetting compound (optional for 15kV and 25kV classes).
Inner Cover
Cross-linked polyethylene (XLPE) thermosetting compound for 90°C conductor operating temperature, meeting the physical requirements prescribed by ICEA S-121-733.
Outer Cover
High-density polyethylene (HDPE) thermosetting compound, resistant to weathering, electrical sparking (2,75kV), ultraviolet radiation and mechanical abrasion, in gray.
Identification
They are supplied in gray with marking as provided for by ASTM B230 and sequential metering.
Note: For harsher environmental conditions, blue cables with higher spark resistance (>5kV) are recommended.
Note: For harsher environmental conditions, blue cables with higher spark resistance (>5kV) are recommended.
Application
XLPE-HDPE Tree Cable Aluminum 25kV 1x50m㎡ is ideal for medium-voltage overhead distribution networks requiring higher current capacity. It is especially effective in forested or urban areas, offering strong resistance to weathering, UV radiation, and mechanical abrasion.
Technical Specifications
XLPE-HDPE Tree Cable Aluminum 25kV 1x50m㎡
XLPE-HDPE Tree Cable Aluminum 25kV 1x35mm²
| Construction characteristics | |
| Conductor material | Aluminum |
| Conductor flexibility | Stranded class 2 |
| Conductor shape | Round, stranded and compacted |
| Inner sheath | XLPE |
| Outer sheath | HDPE |
| Lead free | Yes |
| Colour | Grey/Black |
| Dimensional characteristics | |
| Conductor cross-section | 50 mm² |
| Number of cores | 1 |
| Number of aluminium wires | 7 |
| Conductor diameter | 8.11 mm |
| Protective Covering Nominal Thickness | 4 mm |
| Outer Diameter | 16.11 mm |
| Approximate weight | 275.3 kg/km |
| Nominal outer sheath thickness | 4.0 mm |
| Electrical characteristics | |
| Rated Voltage U₀/U (Um) | 25 kV |
| Mechanical characteristics | |
| Mechanical resistance to impacts | Good |
| Usage characteristics | |
| Ambient installation temperature, range | -5... 45 °C |
| Weather resistance | Excellent |
| Max. conductor temperature in service | 90 °C |
| Overload maximum core temperature | 100 °C |
| Short-circuit max. conductor temperature | 250 °C |
| U.V resistance | Excellent |
| Chemical resistance | Good |
| Packaging | Reel |
Quality Control
XLPE-HDPE Tree Cable Aluminum 25kV 1x50m㎡
Raw Material Test
Raw Material Test for XLPE-HDPE Tree Cable Aluminum 25kV 1x50mm² ensures premium quality for tree contact and overhead durability. The structured process includes: XLPE Insulation Evaluation: XLPE compound tested for tensile strength (>12.5 MPa), elongation (>200%), dielectric strength (>20 kV/mm), water tree resistance, thermal aging (135°C/168h), and hot set test (≤175% elongation after 200°C/15 min). HDPE Sheath Check: High-density polyethylene sheath tested for tensile (>10 MPa), elongation (>300%), environmental stress cracking resistance (ESCR), UV stability, tracking/erosion resistance (IEC 60587 or equivalent), abrasion resistance, and impact strength suitable for tree branch and wildlife contact. Traceability & Rejection: Full batch records maintained; non-conforming materials (e.g., failing dielectric, tracking, or ESCR tests) quarantined/rejected. Only approved raw materials proceed to stranding and triple extrusion.
Process inspection
Process Inspection during manufacturing of XLPE-HDPE Tree Cable Aluminum 25kV 1x50mm² maintains tree wire quality and consistency. Steps include: Outer Sheath Extrusion: Extrude HDPE sheath with high tracking/erosion resistance; real-time checks on thickness, surface finish, adhesion, and sheath integrity. Continuous Monitoring: Track conductor resistance, insulation integrity, overall diameter, and sheath properties throughout. Quality Control: Verify sheath surface smoothness and uniformity for tree branch and wildlife contact resistance. This ensures the final XLPE-HDPE Tree Cable Aluminum 25kV 1x50mm² achieves superior dielectric performance, tracking/erosion resistance, mechanical toughness, and consistent quality for overhead distribution in tree contact areas.
Finished Product
Finished Product Test confirms the XLPE-HDPE Tree Cable Aluminum 25kV 1x50mm² meets tree wire and MV standards before shipment. The procedure includes: Mechanical Evaluation: Bending radius (10–15× OD), tensile strength, crush resistance, abrasion resistance, and impact tests. Sheath & Insulation Performance: Thermal aging (135°C/168h), hot set test, environmental stress cracking resistance (ESCR), UV aging, tracking/erosion resistance (IEC 60587 or equivalent), and moisture resistance verified. Tree/Wildlife Performance Validation: Abrasion and cut-through resistance tests simulating tree branch contact; wildlife protection verification (reduced flashover risk).
Application
XLPE-HDPE Tree Cable Aluminum 25kV 1x50m㎡ helps reduce unplanned outages and maintenance needs while supporting environmentally friendly and reliable power distribution.
Technical Advantages
● 30+ years of manufacturing experience
● ISO and UL certified production
● Customized cable and transformer solutions
Product Packaging
Wires and Cables packaging (1)
Wires and Cables packaging (2)
Wires and Cables packaging (3)
Wires and Cables packaging (4)
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Wires and Cables packaging (7)
Wires and Cables packaging (8)
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What are the advantages of power cables and overhead lines?(1) Reliable operation, because it is installed in a hidden place such as underground, it is less damaged by external forces, has less chance of failure, and the power supply is safe, and it will not cause harm to people; (2) The maintenance workload is small and frequent inspections are not required; (3) No need to erect towers; (4) Help improve power factor.
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Which aspects should be considered when choosing the cross section of a power cable?(1) The long-term allowable working current of the cable; (2) Thermal stability once short circuited; (3) The voltage drop on the line cannot exceed the allowable working range.
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What are the measures for cable fire prevention?(1) Use flame-retardant cables; (2) Use fireproof cable tray; (3) Use fireproof paint; (4) Fire partition walls and fire baffles are installed at cable tunnels, mezzanine exits, etc.; (5) Overhead cables should avoid oil pipelines and explosion-proof doors, otherwise local pipes or heat insulation and fire prevention measures should be taken.
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What should be paid attention to during the transportation and handling of cables?(1) During transportation, loading and unloading, cables and cable reels should not be damaged. It is strictly forbidden to push the cable reels directly from the vehicle. Generally, cables should not be transported and stored flat. (2) Before transporting or rolling the cable reel, ensure that the cable reel is firm, the cable is wound tightly, the oil pipe between the oil-filled cable and the pressure oil tank should be fixed without damage, the pressure oil tank should be firm, and the pressure indication should meet the requirements.
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What inspections should be carried out for the acceptance of cable lines?(1) The cable specifications should meet the regulations, the arrangement should be neat, no damage, and the signs should be complete, correct and clear; (2) The fixed bending radius of the cable, the related distance and the wiring of the metal sheath of the single-core power cable should meet the requirements; (3) The cable terminal and the middle head should not leak oil, and the installation should be firm. The oil pressure of the oil-filled cable and the meter setting should meet the requirements; (4) Good grounding; (5) The color of the cable terminal is correct, and the metal parts such as the bracket are completely painted; (6) There should be no debris in the cable trench, tunnel, and bridge, and the cover should be complete.
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