JLB40-50 铝包钢绞线 防雷接地线

导电率

conductivity

标称面积

nominal area,

mm2

结构

structure

计算截面积

calculated area

mm2

外径

outer dia.

Zui大直流电阻max dc resistance

（20℃）

额定抗拉力

rated tensile strength

计算质量

calculated weight

根数/直径

nos/dia.

铝

al

钢

steel

总计

total

mm

ω/km

kn

kg/km

20.3%iacs

35

7/2.50

8.59

25.77

34.36

7.50

2.4927

41.44

228.70

45

7/2.90

11.56

34.68

46.24

8.70

1.8522

55.77

307.80

50

7/3.00

12.37

37.11

49.48

9.00

1.7310

59.67

329.30

55

7/3.20

14.08

42.22

56.30

9.60

1.5213

67.90

374.70

65

7/3.50

16.84

50.51

67.35

10.50

1.2717

76.98

448.30

70

7/3.60

17.81

53.44

71.25

10.80

1.2021

81.44

474.20

80

7/3.80

19.85

59.54

79.39

11.40

1.0788

89.31

528.40

95

7/4.16

23.79

71.35

95.14

12.48

0.9002

101.00

633.20

100

19/2.60

25.22

75.66

100.88

13.00

0.8524

121.70

674.10

120

19/2.85

30.30

90.91

121.21

14.25

0.7094

146.20

810.00

150

19/3.15

37.02

111.05

148.07

15.75

0.5807

178.60

989.40

185

19/3.50

45.70

137.10

182.80

17.50

0.4704

208.90

1222.00

210

19/3.75

52.46

157.39

209.85

18.75

0.4098

236.10

1402.00

240

19/4.00

59.69

179.07

238.76

20.00

0.3601

260.00

1596.00

300

37/3.20

74.39

223.18

297.57

22.40

0.2907

358.90

2000.00

380

37/3.60

94.16

282.46

376.62

25.20

0.2297

430.50

2532.00

420

37/3.80

104.91

314.71

419.62

26.60

0.2061

472.10

2821.00

465

37/4.00

116.24

348.72

464.96

28.00

0.1860

493.80

3125.00

510

37/4.20

128.15

384.46

512.61

29.40

0.1687

544.40

3446.00