如下表所示:
导体标称截面 |
导体根数/单丝直径mm |
导体根数/单丝直径mm |
导体根数/单丝直径mm |
20℃时导体直流电阻Ω/km |
20℃时导体直流电阻Ω/km |
mm2 |
A |
B |
R |
A、B |
R |
0.5 |
1/0.80 |
7/0.30 |
16/0.20 |
≤ 36.0 |
≤ 39.0 |
0.75 |
1/0.97 |
7/0.37 |
24/0.20 |
≤ 24.5 |
≤ 26.0 |
1 |
1/1.13 |
7/0.43 |
32/0.20 |
≤18.1 |
≤19.5 |
1.5 |
1/1.38 |
7/0.52 |
30/0.25 |
≤12.1 |
≤13.3 |
2.5 |
1/1.78 |
7/0.68 |
49/0.25 |
≤ 7. 41 |
≤ 7. 9 8 |