3/0 Melita Aluminum Conductor Triplex Overhead Service Drop Cable
The 3/0-3/0-3/0 Melita Aluminum Conductor Triplex Overhead Service Drop Cable is designed for high-performance overhead power distribution from utility poles to residential, commercial, or light industrial weatherheads. It features concentric-lay-stranded 1350-H19 aluminum conductors (#3/0 AWG, 19-strand), black cross-linked polyethylene (XLPE) insulation for exceptional weather, UV, and thermal resistance, and a bare neutral messenger (#3/0 AWG, typically ACSR or AAC). Rated for 600 volts phase-to-phase at conductor temperatures up to 90°C (XLPE) or 75°C (Poly), it supports an allowable ampacity of approximately 275 amps (XLP). Compliant with ASTM B-230, B-231, B-232, B-399, and ICEA S-76-474 standards, this robust yet lightweight cable ensures easy installation, excellent conductivity, and long-term durability in challenging outdoor conditions like wind, ice, moisture, and temperature extremes.
Construction
Technical Specifications
Quality Control
Application
Construction
3/0 Melita Aluminum Conductor Triplex Overhead Service Drop Cable Constrution
Standard
• ASTM B-230 Aluminum Wire, 1350-H19 for Electrical Purposes.
• ASTM B-231 Aluminum Conductors, Concentric-Lay-Stranded.
• ASTM B-232 Aluminum Conductors, Concentric-Lay-Stranded, Coated Steel Reinforced (ACSR).
• ASTM B-399 Concentric-Lay-Stranded 6201-T81 Aluminum Alloy Conductors.
• ICEA S-76-474-Neutral-supported Power Cable Assemblies With Weather-Resistant Extruded Insulation Rated 600 Volts.
• ASTM B-231 Aluminum Conductors, Concentric-Lay-Stranded.
• ASTM B-232 Aluminum Conductors, Concentric-Lay-Stranded, Coated Steel Reinforced (ACSR).
• ASTM B-399 Concentric-Lay-Stranded 6201-T81 Aluminum Alloy Conductors.
• ICEA S-76-474-Neutral-supported Power Cable Assemblies With Weather-Resistant Extruded Insulation Rated 600 Volts.
Phase Conductor
Strand or Compressed 1350-H19 Series Aluminum Conductor.
Neutral (Messenger) Conductor
Bare AAC messenger. Optional constructions include a messenger of ACSR or 6201 alloy.
Insulation
Black Cross Linked Polyethylene (XLP) Insulation.
Key Features
1. Voltage rating: 600 volts
2. Temperature rating: 75°C (PE), 90°C (XLP)
3. Conductors: 1350-H19 Aluminum, stranded or compressed
4. Bare AAAC messenger for neutral and support
5. Insulation: Black cross-linked polyethylene (XLP), UV and weather resistant
6. Flexible design for easy stringing and tensioning
2. Temperature rating: 75°C (PE), 90°C (XLP)
3. Conductors: 1350-H19 Aluminum, stranded or compressed
4. Bare AAAC messenger for neutral and support
5. Insulation: Black cross-linked polyethylene (XLP), UV and weather resistant
6. Flexible design for easy stringing and tensioning
Application
3/0 Melita Triplex aluminum wire has three conductors, with one of them being for the neutral path, and two electrodes. The aluminum triplex cable is an electrical cable meant for power distribution from the utility lines to the consumer’s premises through the weather head. It has an operational voltage rating of 600 V and a maximum temperature rating of 75°C. A bare messenger wire of this electrical cable is bonded closely to the two insulated aluminum conductors, which are individually insulated with black cross-linked polyethylene for protection.
Also Known As
3/0 melita triplex aluminum wire, 3/0 melita triplex overhead wire, 3/0 melita aluminum triplex, 3/0 melita triplex conductor, 3/0 melita overhead aluminum wire, 3/0 melita aluminium overhead cables, 3/0 melita overhead service drop conductor
Technical Specifications
3/0 Melita Aluminum Conductor Triplex Overhead Service Drop Cable
3/0 Melita Aluminum Conductor Triplex Overhead Service Drop Cable
| Rated voltage | V | 600 |
| Test voltage | Veff kV/Hz | 4/50 |
| Laying temperature | °C | min. -5 |
| Operating temperature | °C | -30 ~ +90 |
| Conductor temperature | °C | max. +90 |
| Short-circuit temperature | °C/s | max. +250 /5 |
| Bending radius (min.) | mm | 20 × Ø of cable |
Quality Control
3/0 Melita Aluminum Conductor Triplex Overhead Service Drop Cable
Raw Material Test
Raw materials for 3/0-3/0-3/0 Melita Aluminum Conductor Triplex Overhead Service Drop Cable undergo strict incoming quality assurance. 1. Aluminum rods (1350-H19 grade) tested via optical emission spectroscopy for ≥99.5% purity, impurities (Fe, Si ≤0.1%); conductivity (>61% IACS), tensile strength (>170 MPa), and elongation verified per ASTM B-233. 2. Neutral messenger (ACSR/AAC) components checked for galvanization thickness (Class A for ACSR) or alloy properties, breaking strength, and strand integrity per ASTM B-498, B-232, or B-399. 3. XLPE insulation compound evaluated for density, melt flow index, tensile strength (>8 MPa after aging), elongation (>200%), and carbon black content for UV stability per ASTM D-1248. 4. Visual and dimensional inspections identify surface defects or size inconsistencies.
Process inspection
3/0-3/0-3/0 Melita Aluminum Conductor Triplex Overhead Service Drop Cable, in-line inspections ensure precision. 1. Stranding: Concentric stranding of #3/0 AWG phase conductors (19 wires) and neutral messenger monitored for uniform lay length, no birdcaging, and consistent tension. 2. Extrusion: XLPE insulation applied at controlled temperature/speed; online laser gauges verify nominal thickness (0.060 inches) and concentricity, with no voids or irregularities. 3. Cabling/twisting: Two insulated phases twisted around bare neutral at specified lay for a balanced triplex structure without damaging insulation. 4. High-voltage spark testing scans the entire length for pinholes or faults. 5. Periodic sampling checks conductor resistance, insulation integrity, and visual surface quality.
Finished Product
Final testing on completed 3/0-3/0-3/0 Melita Aluminum Conductor Triplex Overhead Service Drop Cable confirms compliance. 1. Electrical: DC resistance per ASTM B-231 (max for #3/0 AWG); insulation resistance >1000 MΩ-km at 500V DC. 2. Voltage withstand: AC high-potential test at 3kV for 5 minutes, no breakdown or flashover. 3. Physical: Insulation thickness/eccentricity measured microscopically; tensile strength and elongation of conductors/insulation meet ASTM specs. 4. Ampacity validated (~275A at 90°C XLPE). 5. Visual/dimensional inspection ensures accurate printing ("Melita", size, voltage, standards), no abrasions, and proper flexibility/coiling. 6. Sample mechanical bend and impact tests confirm durability. All data documented in detailed test reports; only compliant reels certified, labeled, and released for shipment.
Application
Primarily for overhead service drops from pole-mounted transformers to building weatherheads in residential, commercial, and light industrial settings. Ideal for single-phase or higher-load 600V power supply in urban/rural areas, secondary distribution between poles, and reliable connections in harsh environmental conditions.
Technical Advantages
● 30+ years of manufacturing experience
● ISO and UL certified production
● Customized cable and transformer solutions
Product Packaging
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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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