标准截面mm²

实心导体或绞合
导体中单线最少根数

绝缘厚度规定值mm

护套厚度规定值mm

20℃时导体最大电阻Ω/km

铜芯

镀锡铜芯

铝芯

2×0.75

1

0.6

0.9

24.5

24.8

-

2×1.0

1

0.6

0.9

18.1

18.2

-

2×1.5

1

0.7

0.9

12.1

12.2

-

2×2.5

1

0.8

1.0

7.41

7.56

12.1

2×4

1

0.8

1.0

4.61

4.70

7.41

2×4

7

0.8

1.0

4.61

4.70

-

2×6

1

0.8

1.1

3.08

3.11

4.61

2×6

7

0.8

1.1

3.08

3.11

-

2×10

7

1.0

1.2

1.84

1.84

3.08

3×0.75

1

0.6

0.9

24.5

24.8

-

3×1.0

1

0.6

0.9

18.1

18.2

-

3×1.5

1

0.7

0.9

12.1

12.2

-

3×2.5

1

0.8

1.0

7.41

7.56

12.1

3×4

1

0.8

1.1

4.61

4.70

7.41

3×4

7

0.8

1.1

4.61

4.70

-

3×6

1

0.8

1.1

3.08

3.11

4.61

3×6

7

0.8

1.1

3.08

3.11

-

3×10

7

1.0

1.2

1.83

1.84

3.08