| Telecommunication Cable Electric Performance |
|
Serial number
|
Item
|
Unit
|
Stranded
|
|
1
|
D-C Resistance of each Core
(20℃）
|
Ω/km
|
Conductor Dia.： 0.4 0.5 0.6 0.7 0.8
Max： 148 95 65.8 48.0 36.6
|
|
2
|
Imbalance of D-C Resistance upon cores |
%
|
Conductor Dia.： 0.4 0.5 0.6 0.7 0.8
The average less than:1.5
Max：5.0
|
|
3
|
Insulation resistance between each insulation core and other drain or shield（20℃）DC100~500V |
MΩ.km
|
Unfilled filled
Min: 10X103 3X103
|
|
4
|
Insulation electric DC
Exert tension Time
Conductor Dia. is between 0.4~0.8mm
Between conductor:
Conductor Between:
|
kv
|
Solid polyolefin insulation
3s 1min
2.0 1.0
6.0 3.0
|
|
5
|
Working Capacitance 0.8kHz or 1kHz |
nF/km
|
Cable nominal pair 10 >10
Max 58 57
Average 52+/-4 52+/-2
|
|
6
|
Working Capacitance Difference( 100 pairs and up to 100 pairs
filled cable) 0.8kHz or 1kHz
|
%
|
Max: 2 |
|
7
|
Imbalance of Capacitance 0.8kHz or 1kHz
Imbalance of Capacitance Between the Every pairs
Imbalance of Capacitance Between the Cores and land
|
25.0
|
Numbers of nominal pair: 10 >10
Max: 250 250
Max: 2630 2630
The average less than: 570
|
|
8
|
Natural attenuation(20℃)
Up to 10 pairs: 150kHz
1024kHz
|
dB/km |
Conductor Dia.： 0.4 0.5 0.6 0.7 0.8
Solid polyolefin insulation cable
the average less than：12.1 9.0 7.2 6.4 5.7
the average less than：27.3 22.5 18.5 15.8 13.7
Solid polyolefin insulation filled cable
the average less than：11.7 8.2 6.7 5.7 4.7
the average less than：23.6 18.6 15.8 13.8 12.3 |
|
9
|
Next 1024kHz Length≥0.3km
The Next between pair inside the 10 pairs cable total combination
The Next between pair inside 12pair、13pair son unit total combination
The Next between pair inside 20pair、30pair cable or basic unit total combination
The Next between pair inside close together 12pair and 13pair son unit total combination
The Next between pair inside close together basic unit total combination
The Next between pair inside different the big basic unit or son unit total combination
|
dB
|
(M-S) not less than 53
(M-S) not less than 54
(M-S) not less than 58
(M-S) not less than 63
(M-S) not less than 64
(M-S) not less than 79
|
