This specification describes the Foam Skin insulated, star quad, polyethylene sheathed, aluminum and steel tape shielded (Stalpeth) telephone cable used for trunking between telephone stations and subscribers.
1. Scope :
This specification describes the Foam Skin insulated, star quad, polyethylene sheathed, aluminum and steel tape shielded (Stalpeth) telephone cable used for trunking between telephone stations and subscribers.
2. Conductor：0.4、0.5、0.65、0.9
3.Insulation：Foam-skin PE
4. Twisted：Four insulated conductor shall be twisted together
5. Assembly：Arranged in accordance with the structure figure
6. Core Wrap：Mylar tape、Non-woven wrapping tape、 non-woven water blocking tape
7. Aluminum tape and Tinned steel tape：
(1) A single shield of aluminum tape shall be applied longitudinally, thickness 0.2±0.05mm.
(2) A single shield of tinned steel tape shall be applied longitudinally, thickness 0.18±0.05mm.
(3) The outer layer of steel tape shall be homogeneously covered with one layer of non-hydroscopic flooding compound.
8. Sheath：Polyethylene sheath
9.
diameter of conductor (mm)
number of pairs
(P)
standard thickness of insulation
(mm)
cable core diameter (mm)
appro.
width of longitudinal laid tape (mm) appro.
thickness of PE sheath (mm)
overall diameter (mm) appro.
gross weight (Kg/M)
appro.
400
0.11
26
25
1.5
32
1.57
600
0.11
31
30
1.6
38
2.20
800
0.11
35
30
1.8
42
2.81
1000
0.11
40
35
1.9
48
3.40
1200
0.11
43
35
2.0
51
4.08
1400
0.11
47
40
2.1
55
4.69
1600
0.11
50
40
2.2
58
5.29
0.4
1800
0.11
52
40
2.3
61
5.88
2000
0.11
54
40
2.4
63
6.47
2200
0.11
57
40
2.5
66
7.06
2400
0.11
59
40
2.5
68
7.56
2600
0.11
61
40
2.6
70
8.24
2800
0.11
64
45
2.7
73
8.83
3000
0.11
66
45
2.8
76
9.45
3200
0.11
68
45
3.0
78
10.06
400
0.13
31
25
1.6
38
2.21
600
0.13
38
35
1.8
45
3.14
800
0.13
42
35
1.9
50
4.05
1000
0.13
48
40
2.1
56
4.97
1200
.013
53
40
2.3
61
5.96
0.5
1400
0.13
57
40
2.5
66
6.88
1600
0.13
60
40
2.5
70
7.75
1800
0.13
63
40
2.6
72
8.63
2000
0.13
66
45
2.8
76
9.64
2200
0.13
69
45
3.0
79
10.45
2400
0.13
72
45
3.0
82
11.31
400
0.15
38
35
1.8
45
3.42
600
0.15
47
40
2.1
55
4.97
0.65
800
0.15
53
40
2.3
61
6.45
100
0.15
59
40
2.5
68
7.95
1200
0.15
65
45
2.8
74
9.47
1400
0.15
70
45
3.0
80
10.96
0.9
400
0.21
52
40
2.3
61
6.19
10.Electric Properties：
Item
0.4
0.5
0.65
0.9
Conductor resistance
Standard value：139Ω/KMMax. value：147.5Ω/KM
Standard value：88.7Ω/KMMax. value：93.5Ω/KM
Standard value：52.5Ω/KMMax. value：56.5Ω/KM
Standard value：27.4Ω/KMMax. value：29.0Ω/KM
Dielectric strength
DC 500V / 1min. or AC 350 V / 1min.
Insulation resistance
5000MW- Km DC 250~500V
Near-End Cross-talk
40KHz，AC
Min value：58.5dB↑Average value：66dB↑
Far-End Cross-talk
160KHz，AC
m-1.28×S≧55dB/㎞以上 m：Average value S：Standard value
Min value：38dB/km↑