项目 |
单位 |
MHYV |
MHJYV |
MHYBV,MHYAV,MHYA32 |
|
7/0.28 |
7/0.28 |
1/0.8 |
1/1.0 |
|
|
+20℃导线直流电阻 |
Ω/km |
≤45 |
≤73 |
≤36.7 |
≤25.8 |
固有衰减(800~1000HZ) |
dB/km |
≤1.1 |
≤1.30 |
≤0.95 |
≤0.7 |
+20℃导线绝缘电阻 |
MΩ.km |
≥3000 |
|
|
|
线对工作电容(800~1000HZ) |
uF/km |
≤0.06 |
|
|
|
远端串音衰减(800~1000HZ) |
dB/km |
≥70 |
|
|
|
电感(800~1000HZ) |
mH/km |
≤800 |
|
|
|
耐交流工频电压 |
- |
1.5KV/1min通过 |
|
|
|
电流电阻差 |
- |
≤环阻的2% |
|
|
|