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表4 BVR型450/750V
铜芯聚氯乙烯绝缘软电缆 |
| |
导体标
称截面
mm2 |
导电线芯 |
绝缘厚度规定值
mm |
平均外径上限
mm |
20℃时导体电阻最大值
Ω/km |
70℃时绝缘电阻最小值
MΩ·km |
执行标准 |
| 根数/单线标称直径mm |
铜芯 |
镀锡铜芯 |
| 2.5 |
19/0.41 |
0.8 |
4.1 |
7.41 |
7.56 |
0.011 |
JB8734.2-1998 |
| 4 |
19/0.52 |
0.8 |
4.8 |
4.61 |
4.70 |
0.009 |
JB8734.2-1998 |
| 6 |
19/0.64 |
0.8 |
5.3 |
3.08 |
3.11 |
0.0084 |
JB8734.2-1998 |
| 10 |
49/0.52 |
1.0 |
6.8 |
1.83 |
1.84 |
0.0072 |
JB8734.2-1998 |
| 16 |
49/0.64 |
1.0 |
8.1 |
1.15 |
1.16 |
0.0062 |
JB8734.2-1998 |
| 25 |
98/0.58 |
1.2 |
10.2 |
0.727 |
0.734 |
0.0058 |
JB8734.2-1998 |
| 35 |
133/0.58 |
1.2 |
11.7 |
0.524 |
0.529 |
0.0052 |
JB8734.2-1998 |
| 50 |
133/0.68 |
1.4 |
13.9 |
0.387 |
0.391 |
0.0051 |
JB8734.2-1998 |
| 70 |
189/0.68 |
1.4 |
16.0 |
0.268 |
0.270 |
0.0045 |
JB8734.2-1998 |
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