Multi-layer tree wire is a specialized cable designed to withstand harsh environmental conditions while maintaining high electrical reliability. It is particularly suitable for overhead distribution systems in areas prone to lightning, heavy winds, and vegetation interference. This export case analysis delves into the product's parameters, structure, variations, applications, solutions provided to customers, quality assurance measures, production standards, and shipment practices.

Solutions Provided
Customer Challenge:
A utility provider in Southeast Asia required tree wire for a 35 kV distribution network across a densely forested region. The existing network faced frequent outages due to vegetation growth and adverse weather conditions, leading to high maintenance costs and customer dissatisfaction.

Uni-Cable Solution:
Customized Design:
Supplied 35 kV heavy-duty tree wire with enhanced abrasion-resistant layers.

Delivery Timeline:
Completed manufacturing and shipment within 45 days to meet the project’s tight schedule.
 

3-Layer 25kV ACSR Tree Wire Spacer Cable PARAMETER :

Size (AWG or kcmil)	Stranding	Conductor Diameter (mils)	Covering Thickness (mils)			Cable O.D. (mils)	Rated Strength (lbs)	Weight per 1000 ft. (lbs)
			Conductor Shield	Inner Layer	Outer Layer
1/0	6/1	398	15	125	125	928	4161	385
2/0	6/1	447	15	125	125	977	5045	443
3/0	6/1	502	15	125	125	1032	6289	513
4/0	6/1	563	15	125	125	1093	7933	600
266.8	18/1	609	15	125	125	1139	6536	608
266.8	26/7	642	15	125	125	1172	10735	692
336.4	18/1	684	15	125	125	1214	8246	714
336.4	26/7	720	15	125	125	1250	13395	818
336.4	30/7	741	15	125	125	1271	16435	1086
397.5	18/1	743	15	125	125	1273	9443	804
397.5	24/7	772	15	125	125	1302	13870	863
397.5	26/7	783	15	125	125	1313	15485	926
477	24/7	846	20	125	125	1386	16340	999
477	26/7	858	20	125	125	1398	18525	1076
477	30/7	883	20	125	125	1423	22610	1458
556.5	18/1	879	20	125	125	1419	13015	1045
556.5	24/7	914	20	125	125	1454	18810	1124
556.5	26/7	927	20	125	125	1467	21470	1213

Product Parameters and Structure
Key Parameters
Voltage Ratings: 15 kV, 25 kV, 35 kV.
Conductor Material: Aluminum or aluminum alloy.
Conductivity: ≥ 61% IACS (International Annealed Copper Standard).
Insulation:
Inner Layer: Cross-linked polyethylene (XLPE), designed for high dielectric strength.
Outer Layer: UV-resistant and abrasion-resistant thermoplastic or thermoset polymer.
Mechanical Properties: Tensile Strength: 135 MPa to 150 MPa.
Elongation: ≥ 250%.
Weather Resistance: Resistant to moisture, UV radiation, and extreme temperatures (-40°C to 90°C).

Structure
Conductor: Central aluminum or aluminum alloy conductor for excellent conductivity and lightweight properties.
Primary Insulation Layer: Cross-linked polyethylene (XLPE) to provide high insulation resistance and minimize dielectric loss.
Outer Protective Layer: Multi-layer tree-resistant insulation to prevent tree growth interference, abrasion, and UV damage.
Markings: Cable identification and voltage rating are printed or embossed for easy field identification.

Types of Products
Standard Tree Wire: Designed for use in general overhead power distribution networks.
Heavy-Duty Tree Wire: With thicker outer layers for areas with higher risks of mechanical damage or environmental stress.
Custom Configurations: Tailored designs with additional UV protection or specific insulation thicknesses based on project needs.
Applicable Scenarios
Urban Distribution Systems:
Used for overhead power lines in densely populated cities to ensure reliability and minimize outages.



Quality Inspection
Uni-Cable ensures the reliability of tree wire through rigorous quality checks:

Conductor Testing: Verification of conductivity and tensile strength.
Insulation Testing: Dielectric strength testing under high voltage.
Tree-resistant testing to assess insulation durability against vegetation penetration.
Weathering Tests: UV resistance and moisture exposure simulations.
Mechanical Tests: Elongation, impact resistance, and abrasion resistance tests.
Final Inspection: Each batch undergoes a comprehensive final inspection to verify compliance with international standards.

Production Standards
Industry Standards:
IEC 60502-1: For XLPE insulated cables.
ASTM B230/B231: For aluminum conductors.
ICEA S-94-649: For weather-resistant tree wire specifications.

Certifications:
ISO 9001: Quality management certification.
RoHS Compliance: Ensuring environmentally friendly materials.

Shipment and Export
Export Packaging:
Reels and Drums: Tree wire is wound on wooden or steel reels for protection during transit.
Waterproof Wrapping: Cables are wrapped with water-resistant plastic to prevent moisture damage.
Labeling: Each reel is clearly labeled with product details, including voltage rating, length, and batch number.
Loading and Shipping: Products are secured in containers with bracing to prevent movement during transport.
Documentation: Export documents include certificates of compliance, test reports, and detailed packing lists to ensure smooth customs clearance.

Advantages of Choosing Uni-Cable
Factory Direct Sales: Competitive pricing with no intermediaries.
Custom Solutions: Tailored designs for specific project requirements.
Fast Delivery: Efficient production and logistics to meet tight deadlines.
Quality Assurance: Strict adherence to international standards ensures reliable performance.

Uni-Cable’s 15 kV/25 kV/35 kV Multi-Layer Tree Wire provides an ideal solution for overhead distribution networks, offering exceptional performance in challenging environments. With proven reliability, competitive pricing, and a customer-centric approach, Uni-Cable continues to support power distribution projects across the globe with tailored, high-quality products and unmatched service.