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GAP — Gap Type Aluminum Conductor Steel Reinforced Gap Conductor
Bare Conductors

GAP — Gap Type Aluminum Conductor Steel Reinforced Gap Conductor

GAP conductor, GAP conductor manufacturer, gap type aluminum conductor steel reinforced, gap type ACSR conductor, gap conductor for overhead transmission lines, high temperature overhead conductor, low sag conductor, transmission line uprating, reinforced aluminum conductor, overhead power line conductor

  • Gap-Type Aluminum Conductor | Steel Reinforced
  • High-Temperature Performance | Enhanced Power Capacity
  • Designed for High-Capacity Overhead Transmission Lines
  • Reliable Performance | Long-Distance Power Transmission
  • Direct Factory Supply | Custom Specifications Available | MOQ: 10KM
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Product Description

Application

High Temperature Thermal Resistant Alloy Conductor : Aluminum-Zirconium wires (Type-AT1 or AT3), concentrically stranded over a steel core having a small gap between the Steel core & thermal-resistant aluminum alloy layer. These combination offers best Mechanical as well as Electrical Characteristics. Extra High Strength Galvanized Steel (EST); or aluminum-claded Extra High Strength Steel (AW). Additional corrosion protection is achieved as High Temperature Grease is applied in Between GAP of Conductor.

Standard

Basic design to：

Thermal-resistant aluminium alloy wires (Type-AT3 or AT1) for overhead line conductor as per IEC 62004

  • Concentric lay stranded overhead electrical conductors IEC 61089, IEC 62420
  • Zinc-coated steel wires for stranded conductors IEC 888, ASTM B957 & more
  • Zinc–5% Aluminum-Mischmetal Alloy-Coated Steel Core Wire EN 50540, ASTM B802, ASTM B803 or ASTM B958.
  • Aluminium Clad Steel Wires, IEC 61232, ASTM B415, EN 50540 & More

Construction

Aluminium-Zirconium wires (Type-AT3 or AT-1), concentrically stranded over a steel core maintaing gap between the Steel core and first Aluminium Layer.

Features:

  • These can operate upto 210°C with specified strength loss,
  • Can carry 100~150% more current as that of ACSR of the same size.
  • For uprating lines, no modifications or reinforcement is required to the existing towers
  • Limiting the sag increase with the increase of the temperature by the thermal expansion coefficient above knee-point related to the steel core

Construction Parameters

GTACSR & GZTACSR

Conductor Size Stranding Cross-Sectional Area Diameter of Complete Conductor Weight Rated Strength DCResistance @20°C
No. of Wires Wire diameter TAL Steel Total TAL Steel Total with Grease Extra High Strength Ultra High Strength
TAL Steel TAL Steel
(mm²) (No.) (No.) (mm) (mm) (mm²) (mm²) (mm²) (mm) (Kg/Km) (Kg/Km) (Kg/Km) (KN) (KN) (Ω/Km)
175 8/12 7 3.35 (TW) 2.10 176.20 24.25 200.45 17.50 486.98 189.44 691.42 66.14 66.87 0.1668
190 12/16 7 2.92 (TW) 2.30 187.30 29.08 216.38 18.20 517.66 227.24 761.90 74.44 75.46 0.1569
195 20/12 7 2.40(R)  2.88(TW) 2.20 168.80 26.61 195.41 18.06 466.53 207.91 690.44 69.51 70.31 0.1741
218 18/12 7 2.78(R)   2.94(TW) 2.25 190.50 27.83 218.33 19.10 526.51 217.47 759.98 74.47 75.31 0.1542
240 8/12 7 4.02 (TW) 2.40 253.40 31.67 285.07 20.60 700.35 247.43 964.78 88.34 89.45 0.1159
248 12/8 7 3.71(TW) 2.40 216.12 31.67 247.79 19.40 597.32 247.43 862.75 83.00 84.11 0.1360
287 18/12 7 3.15(R)   3.43(TW) 2.55 251.00 35.75 286.75 21.77 693.72 279.33 993.04 94.85 96.10 0.1171
287 20/12 7 2.90(R)  3.55(TW) 2.55 251.00 35.75 286.75 21.77 693.72 279.33 993.04 95.33 96.58 0.1171
310 16/12 7 3.90(R)  3.69(TW) 2.80 319.40 43.10 362.50 24.40 882.76 336.78 1241.54 116.10 117.60 0.0920
400 18/12 7 3.90(R)  4.45(TW) 2.80 401.40 43.10 444.50 26.90 1109.40 336.78 1468.18 129.16 130.67 0.0732
410 14/12 7 4.90(R)  3.99(TW) 3.00 414.00 49.48 463.48 27.60 1144.22 386.61 1554.83 138.95 140.68 0.0710
439 15/12 7 4.50(R)   4.04(TW) 2.90 392.50 46.24 438.74 26.84 1084.80 361.27 1469.07 132.44 134.06 0.0749
462 14/12 7 4.90(R)  3.99(TW) 2.95 414.30 47.84 462.14 27.60 1145.05 373.83 1542.88 136.47 138.14 0.0709
540 24/14/10 7 3.55(R)  3.98(TW) 3.10 536.20 52.83 589.03 31.30 1483.12 412.81 1920.93 164.15 166.00 0.0548
620 16/12/12 7 4.80(TW) 4.75(TW) 3.47(TW) 3.20 615.70 56.30 672.00 31.50 1703.01 439.88 2168.89 177.96 179.93 0.0478

GTACSR/AW & GZTACSR/AW

Conductor Size Cross-Sectional Area Stranding Diameter of Complete Conductor Weight Rated Strength DC Resistance @20°C
STAL Steel Total No. of STAL Wires No. of STAL Layers No. of Steel Wires Dia. of Steel Wires STAL Steel Total High Strength Extra High Strength
(mm²) (mm²) (mm²) (mm²) (No.) (No.) (No.) (mm) (mm) (Kg/Km) (Kg/Km) (Kg/Km) (KN) (KN) (Ω/Km)
175 8/12 7 3.35 (TW) 2.10 176.20 24.25 200.45 17.50 486.98 160.46 647.44 57.65 62.26 0.1593
190 12/16 7 2.92 (TW) 2.30 187.30 29.08 216.38 18.20 517.66 192.48 710.14 65.28 69.93 0.1490
195 20/12 7 2.40(R)  2.88(TW) 2.20 168.80 26.61 195.41 18.06 466.53 176.11 642.64 60.20 65.25 0.1652
218 18/12 7 2.78(R)   2.94(TW) 2.25 190.50 27.83 218.33 19.10 526.51 184.21 710.72 64.73 70.02 0.1470
240 8/12 7 4.02 (TW) 2.40 253.40 31.67 285.07 20.60 700.35 209.59 909.94 78.36 83.43 0.1112
248 12/8 7 3.71(TW) 2.40 216.12 31.67 247.79 19.40 597.32 209.59 806.91 73.03 78.09 0.1295
287 18/12 7 3.15(R)   3.43(TW) 2.55 251.00 35.75 286.75 21.77 693.72 236.60 930.32 83.59 89.31 0.1117
287 20/12 7 2.90(R)  3.55(TW) 2.55 251.00 35.75 286.75 21.77 693.72 26.60 720.32 84.07 89.79 0.1117
310 16/12 7 3.90(R)  3.69(TW) 2.80 319.40 43.10 362.50 24.40 882.76 285.27 1168.03 102.52 109.41 0.0880
400 18/12 7 3.90(R)  4.45(TW) 2.80 401.40 43.10 444.50 26.90 1109.40 285.27 1394.67 115.59 122.48 0.0706
410 14/12 7 4.90(R)  3.99(TW) 3.00 414.00 49.48 463.48 27.60 1144.22 327.48 1471.70 123.36 131.28 0.0682
439 15/12 7 4.50(R)   4.04(TW) 2.90 392.50 46.24 438.74 26.84 1084.80 306.00 1390.80 117.87 125.27 0.0720
462 14/12 7 4.90(R)  3.99(TW) 2.95 414.30 47.84 462.14 27.60 1145.05 316.65 1461.70 121.40 129.05 0.0682
540 24/14/10 7 3.55(R)  3.98(TW) 3.10 536.20 52.83 589.03 31.30 1483.12 349.67 1832.79 149.36 156.23 0.0536
620 16/12/12 7 4.80(TW) 4.75(TW) 3.47(TW) 3.20 615.70 56.30 672.00 31.50 1703.01 372.60 2075.61 162.19 169.51 0.0467

Certificate Display

ISO 9001 Quality Management System
ISO 9001 Certificate (2025–2028)
ISO 9001 Certificate (NOA)
CE — Verification of Conformity
RoHS Compliance Attestation (EU)
Low Voltage Directive Attestation (EU)

Type and routine tests are issued from our own testing centre under the ISO 9001 quality system — test reports and certificates accompany every shipment.

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Why Choose Us

50+ years of experience Trusted manufacturing expertise since 1969
International standards IEC, ASTM, BS, CSA and other global standards
Strict quality control Comprehensive testing throughout production
Large production capacity Reliable supply for utility and EPC projects
Fast global delivery Efficient manufacturing and worldwide shipping
Technical support Expert assistance from inquiry to project completion

Packing & Shipping

  • Wooden, steel or steel-wood drums; drum length to customer requirement
  • Drum marking per customer / utility specification
  • Both drum ends sealed and protected for sea freight
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  • Emailinfo@qzcablegroup.com
  • WhatsApp / WeChat+86 173 3570 4553
  • Contact personChloe · Export Department
  • Factory addressWest Industrial Park, Zhulin Town, Gongyi City, Henan Province, China

    The more specific the standard and size, the faster we can quote.

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