Overhead wires A, AS, ASK, ASKP

Overhead wires A, AS, ASK, ASKP

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Uninsulated wires for overhead power lines according to GOST 839-2019

  • A – a conductor consisting of a single or stranded copper wire. Used in air atmospheres of types II and III on land and sea in all macroclimatic regions according to GOST 15150, UHL version.

  • Structural elements: aluminum wire.


Table 1. Main standard sizes and characteristics of A wires

Nominal wire cross-section, mm²Number of strandsStrand diameter, mmWire diameter, mmConstruction length, m
1071.354.053000
1671.75.13000
2572.136.39300
3572.57.53000
5073.093000
7073.5510.652000
9574.112.31500
120192.8142000
150193.1515.752000
185193.517.52000
240194.0202000
300373.1522.052000
400373.6625.621500
500374.1529.051500
600613.531.51200
700613.834.21000

  • AS – wires consisting of a steel core and aluminum wires. Used for operation on land in regions with a temperate and cold climate. Installed in an atmosphere containing no more than 150 mg/m³•day of sulfur dioxide and less than 0.3 mg/m³•day of chlorides. The long-term permissible operating temperature of the wires should not exceed +90°C.

    Structural elements:

    1. Core made of stranded steel wires:
    — number of wires: 1, 7, 19, 37, or 61;
    — nominal wire diameter: 1.50…4.61 mm;
    — number of layers: 1…4.

    2. Conductive part made of stranded aluminum wires:
    — number of wires: 6, 18, 24, 26, 30, 42, 45, 48, 54, 72, 76, 84, 90, or 96;
    — nominal wire diameter: 1.50…4.70 mm;
    — number of layers: 1…4.

    ASK – a conductor of the AC type, but with a steel core insulated by two layers of polyethylene terephthalate (PET) film. The multi-wire steel core under the PET layer is coated with a neutral, high-temperature-resistant lubricant. Used on sea coasts, salt lakes, industrial areas, and saline sand regions, as well as adjacent areas with air atmospheres of types II and III, provided that the atmosphere contains no more than 150 mg/m² of sulfur dioxide and no more than 200 mg/m² of chloride salts. Suitable for all macroclimatic regions on land according to GOST 15150, UHL version, except for TV.

    Structural elements:

    1. Core made of stranded steel wires:
    — number of wires: 1, 7, 19, 37, or 61;
    — nominal wire diameter: 1.50…4.61 mm;
    — number of layers: 1…4.

    2. Core coating:
    — absent in a single-wire core;
    — neutral, high-temperature-resistant lubricant for multi-wire cores.

    3. Core insulation made of two layers of polyethylene terephthalate film.

    4. Conductive part made of stranded aluminum wires:
    — number of wires: 6, 18, 24, 26, 30, 42, 45, 48, 54, 72, 76, 84, 90, or 96;
    — nominal wire diameter: 1.50…4.70 mm;
    — number of layers: 1…4.

  • ASKP – a conductor of the AC type, but the inter-wire space of the entire conductor, except for the outer surface, is filled with a neutral, high-temperature-resistant lubricant. Used on sea coasts, salt lakes, industrial areas, and saline sand regions, as well as adjacent areas with air atmospheres of types II and III on land and sea in all macroclimatic regions according to GOST 15150, UHL version.

    Structural elements:

    1. Core made of stranded steel wires:
    — number of wires: 1, 7, 19, 37, or 61;
    — nominal wire diameter: 1.50…4.61 mm;
    — number of layers: 1…4.

    2. Conductive part made of stranded aluminum wires:
    — number of wires: 6, 18, 24, 26, 30, 42, 45, 48, 54, 72, 76, 84, 90, or 96;
    — nominal wire diameter: 1.50…4.70 mm;
    — number of layers: 1…4.

    3. The inter-wire space of the conductor is filled with a neutral, high-temperature-resistant lubricant.

    ASKS – a conductor of the AC type, but the inter-wire space of the steel core, including its outer surface, is filled with a neutral, high-temperature-resistant lubricant. Used on sea coasts, salt lakes, industrial areas, and saline sand regions, as well as adjacent areas with air atmospheres of types II and III, provided that the atmosphere contains no more than 150 mg/m² of sulfur dioxide and no more than 200 mg/m² of chloride salts. Suitable for all macroclimatic regions on land according to GOST 15150, UHL version, except for TV.

    Structural elements:

    1. Core made of stranded steel wires:
    — number of wires: 1, 7, 19, 37, or 61;
    — nominal wire diameter: 1.50…4.61 mm;
    — number of layers: 1…4.

    2. The inter-wire space and outer surface of the core are filled with a neutral, high-temperature-resistant lubricant.

    3. Conductive part made of stranded aluminum wires:
    — number of wires: 6, 18, 24, 26, 30, 42, 45, 48, 54, 72, 76, 84, 90, or 96;
    — nominal wire diameter: 1.50…4.70 mm;
    — number of layers: 1…4.


Table 2. Main standard sizes and characteristics of AC, ASK, ASKP, and ASKS wires

It is possible to manufacture wires with other designs provided by GOST 839-2019.

Cross-section, mm²Aluminum part of the wireSteel coreOuter diameter, mmBreaking force, not less than NConstruction length, not less than m
Number of strandsStrand diameterNumber of strandsStrand diameter
16/2.761.8511.855.662203000
25/4.262.312.36.992963000
35/6.262.812.88.4135243000
50/863.213.29.6171123000
70/1163.813.811.4241302000
95/1664.514.513.5333691500
120/19262.471.8515.2415212000
120/27302.272.215.4494652000
150/19242.871.8516.8463072000
150/24262.772.117.1522792000
150/34302.572.517.5626432000
185/24243.1572.118.9580752000
185/29262.9872.318.8620552000
185/43302.872.819.6777672000
240/32243.672.421.6750502000
240/39263.472.6521.6808952000
240/56303.273.222.4982532000
300/3924472.6524905742000
300/48263.872.9524.11006232000
300/67303.573.524.51262702000
330/43542.872.825.21037842000
400/18423.471.8526856001500
400/51543.0573.0527.51204811500
450/56543.273.228.81313701500
500/64543.473.430.61482571500

Service life of the wires is at least:

  • – For wires of type A and AC – 45 years
    – For wires of type ASKP – 25 years
    – For wires of type ASK and ASKS – 10 years

    The warranty period of operation is 4 years from the date of commissioning.

    The materials used for manufacturing the wires comply with the design documentation and the following regulatory documents:

  • Aluminum rodGOST 13843
    Galvanized steel wireGOST 9850
    Polyethylene terephthalate filmGOST 24234
    Neutral heat-resistant lubricant grade ZESTable 3

Table 3

Indicator nameValue
1. AppearancePaste without lumps, dark color
2. Drop point temperature, ºC, not lower105
3. Penetration at 25 ºC, within270 – 335

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