 |
Explanation
to the SYWLY-75 type aluminum belt aluminum pipe (aluminum belt) coaxial
cable products:
Aluminum pipe aluminum belt physical foaming
polytene insulation coaxial cable extra-conductor takes use of aluminum
pipe and belt, is mainly used in CATV main line projects, its main
advantages lie in good coverage,high mechanic intension , low degeneration
,good echo wave feature and tight sealing and damp proof,ect.
SYWLY-75型铝带铝管电缆结构尺寸 |
| 型号SYWV（Y）-75 |
-9 |
-12 |
-13 |
-15 |
|
|
| 内导体直经mm |
2.15+0.03 |
2.77+0.03
|
3.15+0.03 |
3.5+0.04 |
| 绝缘体外径mm |
9.00+0.25 |
11.50+0.25 |
13.00+0.25 |
15.00+0.25 |
| 护套厚度mm |
10.30 |
12.80 |
14.40 |
16.40 |
| 电缆外径mm |
12.1+0.3 |
14.8+0.3 |
15.5+0.3 |
17.0+0.3 |
| 参考重量kg/km |
100 |
135 |
155 |
189 |
|
|
SYWLY-75型铝带铝管电缆电气性能
| 型号SYWV（Y）-75 |
|
-9 |
-12 |
-13 |
-15 |
|
|
| 绝缘电阻MΩ.km |
|
500V直流20℃≥5000 |
500V直流20℃≥5000 |
500V直流20℃≥5000 |
500V直流20℃≥5000 |
| 缆芯介电强度KV |
|
1.6 |
1.6 |
1.6 |
1.6 |
| 护套介电强度KV |
火花 |
8.0 |
8.0 |
8.0 |
8.0 |
| 浸水 |
5.0 |
5.0 |
5.0 |
5.0 |
电容PF/m
特性阻抗Ω |
|
52
75.0+3.0 |
52
75.0+3.0 |
52
75.0+3.0 |
52
75.0+3.0 |
| 回波损耗(db)min |
VHF |
20 |
20 |
20 |
20 |
| UHF |
18 |
18 |
18 |
18 |
| 衰减常数db/100m |
50MHZ |
2.4 |
1.9 |
1.7 |
1.5 |
| 200 MHZ |
5.0 |
3.9 |
3.4 |
3.1 |
| 300 MHZ |
6.2 |
4.8 |
4.2 |
3.8 |
| 450 MHZ |
7.6 |
5.9 |
5.2 |
4.8 |
| 550 MHZ |
8.5 |
6.7 |
5.7 |
5.3 |
| 750 MHZ |
10.1 |
7.9 |
6.8 |
6.2 |
| 800 MHZ |
10.4 |
8.2 |
7.0 |
6.4 |
| 860 MHZ |
10.8 |
8.5 |
7.3 |
6.7 |
| 1000 MHZ |
11.7 |
9.2 |
7.9 |
7.3 |
|
|
|
|
