ACSR Conductor GB/T 1179 Standard

Aluminum Conductor Steel Reinforced (ACSR) conductors are designed for use in overhead power transmission and distribution lines, offering a combination of high conductivity and superior mechanical strength. In China, these conductors are manufactured in accordance with GB/T 1179, the national standard that specifies the technical and dimensional requirements for ACSR conductors.

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  • Acsr Conductor Gb T 1179 Standard

ACSR Conductor GB/T 1179 Standard

ACSR GB/T 1179

  • Shape of conductor circular and sectional
  • Conductor Material Aluminum and Steel
  • Insulation N/A
  • Standard GB/T 1179

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Aluminum Conductor Steel Reinforced (ACSR) conductors are designed for use in overhead power transmission and distribution lines, offering a combination of high conductivity and superior mechanical strength. In China, these conductors are manufactured in accordance with GB/T 1179, the national standard that specifies the technical and dimensional requirements for ACSR conductors.

Originally issued in 1983 and most recently updated in 2017, GB/T 1179 ensures that ACSR conductors meet modern demands for reliability, capacity, and cost-efficiency.

Key Features

  • High Tensile Strength: Steel core allows for long span installations and improved sag performance

  • Good Conductivity: Outer aluminum layers ensure efficient current-carrying capacity

  • Lightweight and Cost-Effective: Aluminum significantly reduces weight and overall system cost

  • Versatile Terrain Suitability: Performs well in mountainous, rural, coastal, and urban environments

  • Ease of Installation and Maintenance: Simplified handling and stringing process

Construction

ACSR conductors are composed of:

  • A central steel core (single or stranded galvanized steel wires) that provides mechanical strength

  • One or more concentric layers of hard-drawn aluminum wires (designated as type “L”) that deliver excellent electrical conductivity

This composite construction offers a balanced solution for spanning long distances and supporting high transmission voltages.

acsr conductor construction

acsr conductor construction

Applications

  • Overhead high-voltage and extra high-voltage transmission lines

  • Medium-voltage distribution lines

  • Rural electrification and grid expansion projects

  • Lines crossing rivers, valleys, and rugged terrain

Technical Specifications – GB/T 1179

The GB/T 1179 standard defines:

  • Structure & Dimensions: Conductor type, strand configuration, and diameter tolerances

  • Electrical Properties: DC resistance at 20°C, current-carrying capacity

  • Mechanical Performance: Tensile strength, elongation, and breaking force

  • Testing Methods: Procedures for verifying conductor compliance through mechanical and electrical tests

Standard Designations

A typical ACSR conductor per GB/T 1179 is denoted as:

JL/G1A-240/30

  • J: Indicates concentric stranding

  • L: Aluminum wire (hard-drawn)

  • G1A: Type and strength of galvanized steel core

  • 240/30: Cross-sectional area of aluminum/steel in mm²

Custom constructions and sizes are also available based on client specifications or project needs.

Referenced Standards

GB/T 1179 may cross-reference standards such as:

  • IEC 61089 – International standard for bare overhead conductors

  • ASTM B232 – U.S. standard for ACSR conductor construction

  • GB/T 3956 – General rules for conductor classification

Need a Quotation or Technical Sheet?

We provide complete ACSR conductor catalogs, test certificates, and engineering support for projects requiring compliance with GB/T 1179 or other global standards.

 

ACSR Conductor GB/T 1179 Standard
Nominal
Sectional
Area		 Sectional Area No. / Nominal Dia. of Wire Approx. Overall
Dia.		 Approx.
Weight		 Nominal Breaking
Load		 Max. DC Resistance
 at 20°C
Aluminum Steel Total Aluminum Steel
mm2 mm2 mm2 mm2 No./mm No./mm mm kg/km kN Ω/km
10/2 10.60  1.77  12.37  6/1.50 1/1.50 4.50  42.8 4.14 2.7062 
16/3 16.13  2.69  18.82  6/1.85 1/1.85 5.55  65.1 6.13 1.7791 
35/6 34.86  5.81  40.67  6/2.72 1/2.72 8.16  140.8 12.55 0.8230 
50/8 48.25  8.04  56.30  6/3.20 1/3.20 9.60  194.8 16.81 0.5946 
50/30 50.73  29.59  80.32  12/2.32 7/2.32 11.6  371.1 42.61 0.5693 
70/10 68.05  11.34  79.39  6/3.80 1/3.80 11.4  274.8 23.36 0.4217 
70/40 69.73  40.67  110.40  12/2.72 7/2.72 13.6  510.2 58.22 0.4141 
95/15 94.39  15.33  109.73  26/2.15 7/2.15 13.6  380.2 34.93 0.3050 
95/20 95.14  18.82  113.96  7/4.16 7/4.16 13.9  408.2 37.24 0.3020 
95/55 96.51  56.30  152.81  12/3.20 7/3.20 16.0  706.1 77.85 0.2992 
120/7 118.89  6.61  125.50  18/2.90 1/2.90 14.5  378.5 27.74 0.2422 
120/20 115.67  18.82  134.49  26/2.38 7/2.38 15.1  466.1 42.26 0.2496 
120/25 122.48  24.25  146.73  7/4.72 7/4.72 15.7  525.7 47.96 0.2346 
120/70 122.15  71.25  193.40  12/3.60 7/3.60 18.0  893.7 97.92 0.2364 
150/8 144.76  8.04  152.80  18/3.20 1/3.20 16.0  460.9 32.73 0.1990 
150/20 145.68  18.82  164.50  24/2.78 7/1.85 16.7  548.5 46.78 0.1981 
150/25 148.86  24.25  173.11  26/2.70 7/2.15 17.1  600.1 53.67 0.1940 
150/35 147.26  34.36  181.62  30/2.50 7/2.50 17.5  675 64.94 0.1962 
185/10 183.22  10.18  193.40  18/3.60 1/3.60 18.0  583.3 40.51 0.1572 
185/25 187.03  24.25  211.28  24/3.15 7/2.10 18.9  704.9 59.23 0.1543 
185/30 181.34  29.59  210.93  26/2.98 7/2.32 18.9  731.4 64.56 0.1592 
185/45 184.73  43.10  227.83  30/2.80 7/2.80 19.6  846.7 80.54 0.1564 
210/10 204.14  11.34  215.48  18/3.80 1/3.80 19.0  649.9 45.14 0.1411 
210/25 209.02  27.10  236.12  24/3.33 7/2.22 20.0  787.8 66.19 0.1380 
210/35 211.73  34.36  246.09  26/3.22 7/2.50 20.4  852.5 74.11 0.1364 
210/50 209.24  48.82  258.06  30/2.98 7/2.98 20.9  959 91.23 0.1381 
240/30 244.29  31.67  275.96  24/3.60 7/2.40 21.6  920.7 75.19 0.1181 
240/40 238.84  38.90  277.74  26/3.42 7/2.66 21.7  962.8 83.76 0.1209 
240/55 241.27  56.30  297.57  30/3.20 7/3.20 22.4  1105.8 101.74 0.1198 
300/15 296.88  15.33  312.21  42/3.00 7/1.67 23.0  938.7 68.41 0.0973 
300/20 303.42  20.91  324.32  45/2.93 7/1.95 23.4  1000.8 76.04 0.0952 
300/25 306.21  27.10  333.31  48/2.85 7/2.22 23.8  1057 83.76 0.0944 
300/40 300.09  38.90  338.99  24/3.99 7/2.66 23.9  1131 92.36 0.0961 
300/50 299.54  48.82  348.37  26/3.83 7/2.98 24.3  1207.7 103.58 0.0964 
300/70 305.36  71.25  376.61  30/3.60 7/3.60 25.2  1399.6 127.23 0.0946 
400/20 406.40  20.91  427.31  42/3.51 7/1.95 26.9  1284.3 89.48 0.0710 
400/25 391.91  27.10  419.01  45/3.33 7/2.22 26.6  1293.5 96.37 0.0737 
400/35 390.88  34.36  425.24  48/3.22 7/2.50 26.8  1347.5 103.67 0.0739 
400/65 398.94  65.06  464.00  26/4.42 7/3.44 28.0  1608.7 135.39 0.0724 
400/95 407.75  93.27  501.02  30/4.16 19/2.50 29.1  1856.7 171.56 0.0709 
500/45 488.58  43.10  531.68  48/3.60 7/2.80 30.0  1685.5 127.31 0.0591 
630/55 639.92  56.30  696.22  48/4.12 7/3.20 34.3  2206.4 164.31 0.0452 
800/55 814.30  56.30  870.60  45/4.80 7/3.20 38.4  2687.5 192.22 0.0355 
800/70 808.15  71.25  879.40  48/4.63 7/3.60 38.6  2887.6 207.68 0.0358 
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