GSW Galvanized Steel Wire/Strand
GSW Galvanized Steel Wire/Strand
Galvanized Clad steel wire earth wire/stay wire/guy wire/spacer cable (GSW)
Overhead ground wire or static wire on transmission lines
Pole or structure guy wires
Messenger cable for field-erected aerial cable
Galvanized steel wire
Application
GSW Wire-Galvanized Steel Wire/Strand Bare concentric-lay-stranded conductors are made from bare, hard-drawn, round, aluminum clad steel wires for general use of electrical purposes. Tensile strength and zinc-clad of steel wire have different grades.
The galvanized single steel wires or stranded steel wires are suitable for cores of ACSR to improve its tensile strength. And they can also be used in the aerial transmission line as the line material of ground connection to avoid the lightning strike.
Specifications
● IEC 61089 Round Wire Concentric Lay Overhead Electrical Stranded Conductors
● ASTM A 475 Zinc-Coated Steel Wire Strand
● BS 183 General Purpose Galvanized Steel Wire Strand
● AS 1222.1 Steel Conductors and Stays—Bare overhead Part 1: Galvanized (SC/GZ)
● GB/T 1179 Round Wire Concentric Lay Overhead Electrical Stranded Conductors
Parameter
Nominal diameter of strand | Number of Wires in Strand | Nominal Diameter of Coated Wire in Strand | Approx. weight of strand |
Minimun Breaking Strength of Strand | |||||
Utilities Grade | Common Grade | Siemens- Martin Grade |
High- Strength Grade |
Extra-high Strength Grade | |||||
In. | mm | mm | kg/km | kN | kN | kN | kN | kN | |
1/8 | 3.18 | 7 | 1.04 | 48 | – | 2.402 | 4.048 | 5.916 | 8.140 |
5/32 | 3.97 | 7 | 1.32 | 76 | – | 3.870 | 6.539 | 9.519 | 13.078 |
3/16 | 4.76 | 7 | 1.57 | 109 | – | 5.115 | 8.452 | 12.677 | 17.748 |
3/16 | 4.76 | 7 | 1.65 | 119 | 10.676 | – | – | – | – |
7/32 | 5.56 | 3 | 2.64 | 131 | – | 6.228 | 10.409 | 15.569 | 21.796 |
7/32 | 5.56 | 7 | 1.83 | 146 | – | 6.850 | 11.387 | 17.126 | 24.020 |
1/4 | 6.35 | 3 | 3.05 | 174 | 14.012 | 8.274 | 13.523 | 21.040 | 29.981 |
1/4 | 6.35 | 3 | 3.05 | 174 | 20.017 | – | – | – | – |
1/4 | 6.35 | 7 | 2.03 | 180 | – | 8.452 | 14.012 | 21.129 | 29.581 |
9/32 | 7.14 | 3 | 3.30 | 204 | – | 9.252 | 15.035 | 23.398 | 33.362 |
9/32 | 7.14 | 7 | 2.36 | 244 | 20.462 | 11.432 | 18.905 | 28.469 | 39.812 |
5/16 | 7.94 | 3 | 3.68 | 255 | 28.913 | 11.076 | 18.193 | 28.246 | 40.479 |
5/16 | 7.94 | 7 | 2.64 | 305 | – | 14.234 | 23.798 | 35.586 | 49.820 |
5/16 | 7.94 | 7 | 2.77 | 335 | 26.689 | – | – | – | – |
3/8 | 9.52 | 3 | 4.19 | 328 | 37.810 | 14.813 | 24.732 | 37.187 | 52.489 |
3/8 | 9.52 | 7 | 3.05 | 407 | 51.155 | 18.905 | 30.915 | 48.040 | 68.503 |
7/16 | 11.11 | 7 | 3.68 | 595 | 80.068 | 25.355 | 41.591 | 64.499 | 92.523 |
1/2 | 12.70 | 7 | 4.19 | 770 | 111.206 | 32.917 | 53.823 | 83.627 | 119.657 |
1/2 | 12.70 | 19 | 2.54 | 751 | – | 33.895 | 56.492 | 84.961 | 118.768 |
9/16 | 14.29 | 7 | 4.78 | 1000 | – | 42.703 | 69.837 | 108.981 | 155.688 |
9/16 | 14.29 | 19 | 2.87 | 949 | – | 42.881 | 71.616 | 107.202 | 149.905 |
5/8 | 15.88 | 7 | 5.26 | 1211 | – | 51.599 | 84.961 | 131.667 | 188.605 |
5/8 | 15.88 | 19 | 3.18 | 1186 | – | 48.930 | 80.513 | 124.995 | 178.819 |
3/4 | 19.05 | 19 | 3.81 | 1721 | – | 71.172 | 116.543 | 181.487 | 259.331 |
7/8 | 22.22 | 19 | 4.50 | 2356 | – | 97.416 | 159.691 | 248.211 | 354.523 |
1 | 25.40 | 19 | 5.08 | 3089 | – | 127.664 | 209.066 | 325.610 | 464.839 |
1 | 25.40 | 37 | 3.63 | 3065 | – | 125.885 | 205.508 | 319.827 | 456.832 |
1 1/8 | 28.58 | 37 | 4.09 | 4010 | – | 160.136 | 262.000 | 407.457 | 581.827 |
1 1/4 | 31.75 | 37 | 4.55 | 4840 | – | 198.391 | 324.720 | 505.318 | 721.502 |
Sectional Area | Stranding | Diameter of EARTHWIRE | Weight | Rated Strength | |||||||
No. of Wires | Individual wire diameter | Grade 350 | Grade 480 | Grade 700 | Grade 850 | Grade 1000 | Grade 1150 | Grade 1300 | |||
mm² | No. | mm | mm | Kg/km | KN | KN | KN | KN | KN | KN | KN |
7.63 | 3 | 1.80 | 3.90 | 60.00 | 2.65 | 3.66 | – | – | – | – | – |
16.55 | 3 | 2.65 | 5.70 | 130.00 | 5.80 | 7.95 | – | – | – | – | – |
24.89 | 3 | 3.25 | 7.00 | 195.00 | 8.70 | 11.95 | – | – | – | – | – |
37.70 | 3 | 4.00 | 8.60 | 295.00 | 13.20 | 18.10 | – | – | – | – | – |
10.18 | 4 | 1.80 | 4.40 | 80.00 | 3.55 | 4.90 | – | – | – | – | – |
22.06 | 4 | 2.65 | 6.40 | 172.00 | 7.70 | 10.60 | – | – | – | – | – |
33.18 | 4 | 3.25 | 7.90 | 260.00 | 11.60 | 15.90 | – | – | – | – | – |
50.27 | 4 | 4.00 | 9.70 | 390.00 | 17.60 | 24.10 | 35.20 | – | – | – | – |
8.84 | 5 | 1.50 | 4.10 | 69.00 | 3.10 | 4.24 | 6.18 | – | – | – | – |
12.72 | 5 | 1.80 | 4.90 | 95.00 | 4.45 | 6.10 | 8.90 | – | – | – | – |
27.58 | 5 | 2.65 | 7.20 | 220.00 | 9.65 | 13.25 | 19.30 | – | – | – | – |
41.48 | 5 | 3.25 | 8.80 | 320.00 | 14.50 | 19.90 | 29.00 | – | – | – | – |
62.83 | 5 | 4.00 | 10.80 | 490.00 | 22.00 | 30.15 | 43.95 | – | – | – | – |
1.72 | 7 | 0.56 | 1.70 | 14.00 | 0.60 | 0.83 | 1.20 | – | 1.70 | 1.98 | 2.24 |
2.77 | 7 | 0.71 | 2.10 | 28.00 | 0.97 | 1.33 | 1.94 | – | 2.75 | 3.19 | 3.60 |
3.97 | 7 | 0.85 | 2.60 | 31.00 | 1.39 | 1.90 | 2.80 | – | 3.95 | 4.57 | 5.15 |
4.45 | 7 | 0.90 | 2.70 | 35.00 | 1.55 | 2.14 | 3.10 | – | 4.45 | 5.12 | 5.80 |
5.50 | 7 | 1.00 | 3.00 | 43.00 | 1.92 | 2.64 | 3.85 | – | 5.50 | 6.32 | 7.15 |
8.59 | 7 | 1.25 | 3.80 | 67.00 | 3.01 | 4.10 | 6.00 | – | 8.55 | 9.88 | 11.15 |
10.78 | 7 | 1.40 | 4.20 | 84.00 | 3.75 | 5.17 | 7.54 | 9.16 | 10.75 | 12.35 | 14.00 |
11.24 | 7 | 1.43 | 4.30 | 86.00 | 3.85 | 5.28 | 7.70 | 9.35 | 11.00 | 12.65 | 14.30 |
14.07 | 7 | 1.60 | 4.80 | 110.00 | 4.90 | 6.75 | 9.85 | 11.95 | 14.10 | 16.20 | 18.30 |
17.81 | 7 | 1.80 | 5.40 | 140.00 | 6.23 | 8.55 | 12.45 | – | 17.80 | 20.50 | 23.20 |
21.99 | 7 | 2.00 | 6.00 | 170.00 | 7.70 | 10.55 | 15.40 | – | 22.00 | 25.30 | 38.60 |
30.62 | 7 | 2.36 | 7.10 | 240.00 | 10.70 | 14.70 | 21.40 | – | 30.60 | 35.20 | 39.80 |
38.61 | 7 | 2.65 | 8.00 | 300.00 | 13.50 | 18.50 | 27.00 | – | 38.60 | 44.40 | 50.20 |
49.48 | 7 | 3.00 | 9.00 | 392.00 | 17.30 | 23.75 | 34.65 | – | 49.50 | 56.90 | 64.30 |
54.55 | 7 | 3.15 | 9.50 | 430.00 | 19.10 | 26.20 | 38.20 | – | 54.55 | 62.75 | 70.90 |
58.07 | 7 | 3.25 | 9.80 | 460.00 | 20.30 | 27.85 | 40.65 | – | 58.05 | 66.80 | 75.50 |
73.24 | 7 | 3.65 | 11.00 | 570.00 | 25.60 | 35.15 | 51.25 | – | 73.25 | 84.20 | 95.20 |
87.96 | 7 | 4.00 | 12.00 | 690.00 | 30.90 | 42.20 | 61.60 | – | 88.00 | 101.00 | 114.00 |
99.30 | 7 | 4.25 | 12.80 | 780.00 | 34.75 | 47.65 | 69.50 | – | 99.30 | 114.00 | 129.00 |
124.04 | 7 | 4.75 | 14.00 | 970.00 | 43.40 | 59.45 | 86.80 | – | 124.00 | 142.70 | 161.30 |
14.92 | 19 | 1.00 | 5.00 | 120.00 | 5.22 | 7.16 | 10.45 | – | 14.92 | 17.16 | 19.40 |
23.32 | 19 | 1.25 | 6.30 | 180.00 | 8.16 | 11.19 | 16.32 | – | 23.32 | 26.81 | 30.31 |
29.25 | 19 | 1.40 | 7.00 | 230.00 | 10.24 | 14.04 | 14.04 | – | 29.25 | 33.64 | 38.02 |
38.20 | 19 | 1.60 | 8.00 | 300.00 | 13.37 | 18.34 | 26.75 | – | 38.20 | 43.93 | 49.66 |
59.69 | 19 | 2.00 | 10.00 | 470.00 | 20.90 | 28.65 | 41.78 | 50.7 | 59.69 | 68.64 | 77.60 |
93.27 | 19 | 2.50 | 12.50 | 730.00 | 32.65 | 44.80 | 65.29 | 79.3 | 93.27 | 107.30 | 121.30 |
134.30 | 19 | 3.00 | 15.00 | 1050.00 | 47.00 | 64.50 | 94.00 | 114.1 | 134.30 | 154.50 | 174.60 |
188.06 | 19 | 3.55 | 17.80 | 1470.00 | 65.80 | 90.27 | 131.60 | 159.9 | 188.00 | 216.30 | 244.50 |
238.76 | 19 | 4.00 | 20.00 | 1870.00 | 83.55 | 114.60 | 167.10 | 203.0 | 238.70 | 274.60 | 310.40 |
336.69 | 19 | 4.75 | 23.80 | 2630.00 | 117.85 | 161.60 | 235.70 | 286.0 | 336.70 | 387.20 | 437.70 |
Standing and wire diameter | Approx. overall diameter | Cross-section area | Approx. mass per km | Calculated breaking load (CBL) | Equivalent aluminium area | Typical d.c. resistance per km at 20°C |
mm | mm | mm² | kg | kN | mm² | Ω |
3/2.00 | 4.31 | 9.426 | 74 | 11.7 | 1.4 | 20 |
3/2.75 | 5.93 | 17.82 | 140 | 22.2 | 2.6 | 11 |
7/2.00 | 6 | 21.99 | 173 | 26 | 3.2 | 8.7 |
7/2.75 | 8.25 | 41.58 | 328 | 49 | 6.1 | 4.6 |
7/3.25 | 9.75 | 58.07 | 458 | 68.7 | 8.6 | 3.3 |
7/3.75 | 11.3 | 77.28 | 609 | 91.3 | 11 | 2.5 |
19/2.00 | 10 | 59.7 | 473 | 70.5 | 8.8 | 3.2 |
19/2.75 | 13.8 | 112.9 | 894 | 133 | 17 | 1.7 |
19/3.25 | 16.3 | 157.6 | 1250 | 186 | 23 | 1.2 |
Nominal Area | Sectional Area | Stranding | Diameter of EARTHWIRE | Weight | Rated Strength | ||||
No. of Wires | Individual wire diameter | ST I | ST II | ST III | ST IV | ||||
mm² | mm² | No. | mm | mm | Kg/km | KN | KN | KN | KN |
25 | 24.25 | 7 | 2.10 | 6.30 | 192.00 | 8.98 | 15.90 | 30.18 | 36.17 |
35 | 34.36 | 7 | 2.50 | 7.50 | 272.00 | 12.73 | 22.52 | 42.76 | 51.25 |
50 | 49.48 | 7 | 3.00 | 9.00 | 391.00 | 18.33 | 32.43 | 61.58 | 73.80 |
50 | 48.35 | 19 | 1.80 | 9.00 | 384.00 | 17.91 | 31.69 | 60.17 | 72.11 |
70 | 65.81 | 19 | 2.10 | 10.50 | 522.00 | 24.38 | 43.14 | 81.90 | 98.16 |
95 | 93.27 | 19 | 2.50 | 12.50 | 741.00 | 34.56 | 61.14 | 116.07 | 139.11 |
120 | 116.99 | 19 | 2.80 | 14.00 | 929.00 | 43.34 | 76.69 | 145.59 | 174.49 |
Sectional Area | Stranding Center wire Inside Layer | Diameter of EARTHWIRE | Weight | Rated Strength | ||||||
1370 | 1570 | 1670 | 1770 | 1880 | 1960 | |||||
mm² | 1 wire | 18 wire | mm | Kg/km | KN | KN | KN | KN | KN | KN |
29.48 | 1.50 | 1.4 | 7.10 | 253.00 | 36.35 | 41.55 | 44.100 | 45.850 | 48.000 | 50.500 |
33.82 | 1.60 | 1.5 | 7.60 | 290.50 | 41.65 | 47.65 | 50.550 | 52.750 | 55.050 | 60.400 |
38.46 | 1.70 | 1.6 | 8.10 | 330.00 | 44.40 | 54.20 | 57.600 | 59.950 | 62.600 | 65.900 |
43.4 | 1.80 | 1.7 | 8.60 | 372.50 | 53.55 | 61.20 | 65.000 | 67.700 | 70.650 | 74.400 |
48.64 | 1.90 | 1.8 | 9.10 | 417.50 | 59.95 | 68.60 | 72.850 | 75.900 | 79.200 | 83.300 |
60.35 | 2.20 | 2 | 10.00 | 519.00 | 74.45 | 85.10 | 94.100 | 93.500 | 98.000 | 102.400 |
72.95 | 2.40 | 2.2 | 11.00 | 627.40 | 89.95 | 102.00 | 109.000 | 112.500 | 118.500 | 123.500 |
86.74 | 2.60 | 2.4 | 12.00 | 746.00 | 106.00 | 122.00 | 129.000 | 134.000 | 140.500 | 147.000 |
101.72 | 2.80 | 2.6 | 13.00 | 873.00 | 124.50 | 143.00 | 151.500 | 158.000 | 165.000 | 173.500 |
117.9 | 3.00 | 2.8 | 14.00 | 1050.00 | 145.50 | 166.00 | 176.000 | 183.500 | 190.000 | 200.500 |
135.28 | 3.20 | 3 | 15.00 | 1160.00 | 166.50 | 190.00 | 202.000 | 210.500 | 220.000 | 231.500 |
153.84 | 3.40 | 3.2 | 16.00 | 1320.00 | 189.50 | 216.50 | 226.000 | 236.500 | – | – |
173.60 | 3.60 | 3.4 | 17.00 | 1490.00 | 214.00 | 244.50 | 255.500 | 267.500 | – | – |
216.7 | 4.00 | 3.8 | 19.00 | 1855.00 | 267.00 | 305.00 | 318.500 | 334.000 | – | – |
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