Overview
| Model NO. | ACSR Conductor (LGJ) | Application | Power, Overhead, Cable, Electric Appliance, Industrial |
| Voltage | Medium/High Voltage | Conductor | Aluminum |
| Insulation Material | Bare | Jacket | No Sheath |
| Material Shape | Round | Temperature | 40°C to 80°C |
| Certification | ISO, CCC, CE, RoHS, VDE | Conductor Type | Class 2 |
| Brand | ZhongYI | Voltage Type | 1-110KV |
| Company Name | ZHONGYI Cable Co., Ltd | CORE | 1 |
| Transport Package | Plastic Packaging and Cardboard Boxes | Specification | 35mm²～1600mm² |
| Origin | HEBEI China | Color | Silver / Grey |
| Item | Nominal Cross Section mm² |
Diameter wire (MM) | Max.Outer Diameter mm |
Ref.Weight kg/km |
||
| AL | Steel | AL | Steel | |||
| 500/45 | 489 | 43.1 | 3.6 | 2.8 | 30 | 1687 |
| 500/65 | 499 | 64.7 | 3.43 | 3.43 | 30.9 | 1885 |
| 560/40 | 560 | 38.6 | 3.98 | 2.65 | 31.8 | 1848 |
| 560/70 | 559 | 70.9 | 3.63 | 2.18 | 32.7 | 2101 |
| 1120/90 | 1120 | 91 | 4.12 | 2.47 | 45.3 | 3813 |
| 1250/70 | 1252 | 70.1 | 4.58 | 3.57 | 47.4 | 4011 |
| 1250/100 | 1248 | 102 | 4.35 | 2.61 | 47.9 | 4252 |
| 1400/135 | 1400 | 134 | 4.5 | 3 | 51 | 4926 |
| 1440/140 | 1439 | 117 | 4.67 | 2.8 | 51.4 | 4899 |
Features
ACSR Conductor LGJ Cable is the model designation under Chinese standards; it is internationally known as ACSR (Aluminum Conductor Steel Reinforced).
| Cable/Conductor Code | International / Western Technical Name | Material Composition (Core / Strands) | Tensile Strength & Span Capacity | Electrical Conductivity | Best Installation Environment | Chinese Equivalent (GB/T) |
|---|---|---|---|---|---|---|
| ACSR | Aluminum Conductor Steel Reinforced (Bare Conductor) | High-Tensile Galvanized Steel Core + EC Grade Aluminum Strands | Excellent (Designed for ultra-long spans) | Standard (Slight skin-effect loss via steel core) |
Long-distance high voltage (HV) transmission grids over mountains, rivers, and valleys. | LGJ (Standard Bare Line) |
| AAC | All Aluminum Conductor (Bare Conductor) | 100% EC Grade Hard-Drawn Aluminum Strands (No Steel) | Low (Only for short spans) |
Maximum (61% IACS high conductivity) |
Urban low/medium voltage distribution lines with short pole spacings or coastal areas (anti-corrosion). | LJ (All-Aluminum Bare Line) |
| AAAC | All Aluminum Alloy Conductor (Bare Conductor) | High-Strength Aluminum-Magnesium-Silicon Alloy Strands | High (Good for medium-long spans) |
High (Better power efficiency than ACSR) |
Medium and high voltage distribution grids, urban overhead reconstruction, and heavy corrosion zones. | LHAJ (Aluminum Alloy) |
| ACAR | Aluminum Conductor Alloy Reinforced | High-Strength Aluminum Alloy Core + EC Grade Aluminum Strands | High (Optimized strength-to-weight) |
Excellent (Higher capacity than ACSR) |
Overhead transmission lines requiring both maximum current carrying capacity and structural mechanical support. | LGJJ (Alloy Reinforced) |
| ACCC | Aluminum Conductor Composite Core (High-Tech) | Carbon Fiber & Glass Fiber Composite Core + Trapezoidal Aluminum Wires | Extreme (Zero thermal sag at high loads) |
Maximum Upgrade (Doubles capacity of ACSR) |
Old grid capacity upgrading projects (re-conductoring) and extreme heavy-load transmission grids. | JLRX / JL/G3A (Carbon Fiber Core) |
High Tensile Strength: The central steel core allows for higher mechanical tension and longer spans between poles.
Excellent Conductivity: High-purity aluminum strands ensure efficient power transmission with low loss.
Lightweight Design: Optimized strength-to-weight ratio compared to all-copper conductors.
Durability: Resistant to sag, corrosion, and harsh environmental conditions (wind, ice, heat).
Application
Overhead Transmission: Primary choice for high-voltage (HV) and extra-high-voltage (EHV) transmission lines.
Distribution Lines: Reliable power distribution for rural and urban electrical grids.
Long-Span Crossings: Ideal for river crossings, valleys, and mountainous terrain.
Grid Modernization: Used in upgrading existing infrastructure for better load capacity.
Certification
Factory
FAQ
1. What is the fundamental mechanical advantage of the steel core in an ACSR LGJ conductor?
High Tensile Strength for Extra-Long Spans:
The central galvanized steel core provides the primary mechanical load-bearing capacity for the ACSR (LGJ) conductor. While the outer EC-grade aluminum strands carry the electrical current, the high-strength steel core absorbs massive longitudinal tensile pulling forces. This allows power grid engineers to design transmission lines with significantly longer spans between utility towers, minimizing tower counts and preventing excessive sagging under heavy wind or ice loads.
2. Why is ACSR (LGJ) left completely bare without any polymer insulation or sheathing?
Thermal Dissipation & Overhead Efficiency:
ACSR (LGJ) is a standard bare conductor engineered exclusively for high-altitude overhead transmission lines. Eliminating plastic or rubber jackets allows the heavy current-carrying aluminum strands to maximize natural air cooling and thermal dissipation. This design enables higher continuous power transmission capacities while substantially reducing dead-weight and wind resistance, ensuring structural grid stability over long distances.
3. How do ACSR, AAC, and AAAC bare overhead conductors differ in grid engineering?
Structural Material & Application Matrix:
The distinction lies entirely in the mechanical strength-to-weight ratio. Standard ACSR (LGJ) utilizes a steel reinforcement core for ultra-long spans across valleys and mountains. AAC (All Aluminum Conductor) contains zero steel, offering maximum conductivity but restricted to short spans in urban low-voltage distribution. AAAC (All Aluminum Alloy Conductor) utilizes high-strength Al-Mg-Si alloy strands, providing superior corrosion resistance for aggressive coastal environments.
4. Does ZHONGYI CABLE manufacture ACSR lines compliant with global transmission standards?
Rigorous Certification & Regulatory Compliance:
Yes. In addition to meeting China’s national GB/T 1179 (LGJ) parameters, our manufacturing facility engineers ACSR conductors to satisfy rigorous international frameworks, including IEC 61089, ASTM B232, and BS 215 standards. Every production batch undergoes comprehensive factory routing checks—including tensile strength evaluations, wrap testing for galvanized steel coating, and DC resistance checks—to ensure seamless import compliance at your destination port.
5. What are the wholesale packaging metrics and heavy-duty logistics options for ACSR bulk orders?
Industrial Project Logistics & Drum Security:
To preserve the precise helical twist of the aluminum strands and prevent scratching or kinking during maritime transit, our ACSR conductors are wrapped tightly on reinforced steel-wooden drums or extra-heavy-duty all-steel reels. Total continuous delivery lengths per drum are meticulously calibrated based on your path-by-path sag-tension blueprints to cut down on unnecessary mid-air splicing joints, backed by complete Type Test Certificates.
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