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PE Insulated ISDN Primary Access Air Core Cables |
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| Applications |
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The cables are designed for digital communications where 120Ω impedance are required during copper interconnection. They are used as primary access for ISDN services inside buildings between network termination equipment and subscriber termination equipment (G703 E1/T1 systems 2.048 or 1.544 Mbps). |
| Standards |
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• ER.f5.101 |
| Construction |
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Conductors: Solid annealed bare copper sized 0.4/0.5mm as per ASTM B-3/class 1 of IEC 60228. |
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Insulation: Solid polyethylene as per ASTM D 1248/IEC 60708. |
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Twisted Pairs: Insulated conductors are twisted into pairs with varying lays to minimize crosstalk. |
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Cable Core Assembly: The pairs are cabled together in layers of 12, 13 & 25 pair unit to form the cable core. Units are identified by colour coded binders. |
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Core Wrapping: One or more non-hygroscopic polyester tapes are helically or longitudinally laid with an overlap. |
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Screen: Aluminium/Polyester tape is applied longitudinally with an overlap. |
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Sheath: PVC or LSZH compound. |
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Ripcord: Nylon ripcord may be placed parallel to the cores to facilitate sheath removal. |
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Armour (optional): Corrugated steel tape armour. |
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Additional Outer Sheath: PVC (for NYY Cables); PE (for Armoured Cables); LSZH. |
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Drain Wire: Solid tinned copper 0.5mm drain wire may be laid longitudinally under the screen. |
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| Electrical properties |
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| Conductor Diameter |
mm |
0.4 |
0.5 |
| Conductor Gauge Size |
AWG |
26 |
24 |
| Conductor Size |
mm2 |
0.126 |
0.196 |
| Maximum Conductor Resistance @20°C |
Ω/km |
143 |
91 |
| Minimum Insulation Resistance @500V DC |
MΩ.km |
10000 |
8000 |
| Maximum Resistance Unbalance |
% |
2 |
2 |
| Maximum Average Mutual Capacitance @1000Hz |
nF/km |
46 |
46 |
| Maximum Capacitance Unbalance @1KHz pair-to-pair |
pF/500m |
45 |
45 |
| Impedance @200KHz |
Ω |
120 +/- 24 |
120 +/- 24 |
| Impedance @1000KHz |
Ω |
120 +/- 12 |
120 +/- 12 |
| Maximum Average Attenuation @51KHz |
dB/km |
8.9 |
6.5 |
| Maximum Average Attenuation @128KHz |
dB/km |
9.86 |
7.2 |
| Maximum Average Attenuation @256KHz |
dB/km |
12.6 |
9.5 |
| Maximum Average Attenuation @512KHz |
dB/km |
15.6 |
12.5 |
| Maximum Average Attenuation @768KHz |
dB/km |
19.5 |
15.5 |
| Maximum Average Attenuation @1024KHz |
dB/km |
24.6 |
19.0 |
| Maximum Average Attenuation @1280KHz |
dB/km |
27 |
21 |
| Maximum Average Attenuation @1536KHz |
dB/km |
27.8 |
22.2 |
| Maximum Average Attenuation @1792KHz |
dB/km |
30 |
24 |
| Maximum Average Attenuation @2048KHz |
dB/km |
32.8 |
26.3 |
| Minimum NEXT pair-to-pair @1000KHz |
dB |
62 |
62 |
| Dielectric Strength Conductor to Conductor 3secs |
V DC |
500 |
500 |
| Nominal Insulation Thickness |
mm |
0.3 |
0.35 |
| Nominal Insulated Conductor Diameter |
mm |
1.0 |
1.2 |
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| Mechanical and thermal properties |
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Temperature range during operation (fixed state) : -30°C – +70°C |
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Temperature range during installation (mobile state) : -20°C – +50°C |
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Minimum bending radius : 10 x Overall Diameter. |
| Colour Code |
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Standard colour code is per BT CW 110J given in Colour Code Chart. |
| Dimensions and weight |
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| Cable Code |
Number of
Pairs |
Nominal Sheath
Thickness
mm |
Nominal Overall
Diameter
mm |
Nominal Weight
kg/km |
| 120Ω Twinaxial cable |
| 0.4mm Conductor, 1.0mm Insulated Wire |
| TX101-2Y(St)Y1P04-ISDN-P |
1 |
0.3 |
3.0 |
10.5 |
| 0.5mm Conductor, 1.5mm Insulated Wire |
| TX101-2Y(St)Y1P05-ISDN-P |
1 |
0.7 |
4.5 |
18.0 |
| Multipair 120Ω cable |
| 0.5mm Conductor, 1.2mm Insulated Wire, PVC Sheathed Indoor Cable |
| TP101-2Y(St)Y2P05-ISDN-P |
2 |
1.0 |
7.0 |
31 |
| TP101-2Y(St)Y4P05-ISDN-P |
4 |
1.0 |
8.2 |
57 |
| TP101-2Y(St)Y8P05-ISDN-P |
8 |
1.0 |
10.0 |
86 |
| TP101-2Y(St)Y12P05-ISDN-P |
12 |
1.0 |
10.5 |
113 |
| TP101-2Y(St)Y16P05-ISDN-P |
16 |
1.0 |
11.8 |
142 |
| TP101-2Y(St)Y18P05-ISDN-P |
18 |
1.0 |
12.5 |
152 |
| TP101-2Y(St)Y20P05-ISDN-P |
20 |
1.0 |
13.2 |
157 |
| TP101-2Y(St)Y24P05-ISDN-P |
24 |
1.0 |
13.5 |
191 |
| TP101-2Y(St)Y28P05-ISDN-P |
28 |
1.0 |
14.0 |
219 |
| TP101-2Y(St)Y32P05-ISDN-P |
32 |
1.0 |
16.5 |
260 |
| TP101-2Y(St)Y50P05-ISDN-P |
50 |
1.2 |
19.2 |
370 |
| TP101-2Y(St)Y75P05-ISDN-P |
75 |
1.2 |
23.2 |
530 |
| TP101-2Y(St)Y100P05-ISDN-P |
100 |
1.2 |
26.5 |
720 |
| 0.4mm Conductor, 1.0mm Insulated Wire, PVC Sheathed Indoor Cable |
| TP101-2Y(St)Y4P04-ISDN-P |
4 |
0.7 |
6.4 |
38 |
| 0.5mm Conductor, 1.2mm Insulated Wire, LSZH Sheathed Indoor Cable |
| TP101-2Y(St)H8P05-ISDN-P |
8 |
1.0 |
10.0 |
87 |
| TP101-2Y(St)H16P05-ISDN-P |
16 |
1.0 |
12.0 |
132 |
| TP101-2Y(St)H32P05-ISDN-P |
32 |
1.0 |
16.0 |
260 |
| 0.5mm Conductor, 1.2mm Insulated Wire, PVC Double Sheathed (NYY) Outdoor Cable |
| TP101-2Y(St)YY4P05-ISDN-P |
4 |
1.0+1.2 |
10.0 |
105 |
| TP101-2Y(St)YY8P05-ISDN-P |
8 |
1.0+1.2 |
11.6 |
145 |
| TP101-2Y(St)YY16P05-ISDN-P |
16 |
1.0+0.6 |
13.0 |
170 |
| TP101-2Y(St)YY32P05-ISDN-P |
32 |
1.0+1.3 |
18.5 |
325 |
| 0.5mm Conductor, 1.2mm Insulated Wire, PVC Inner Sheathed, Corrugated Steel Armour, PE Sheathed, Outdoor Cable |
| TP101-2Y(St)Y(STA)2Y16P05-ISDN-P |
16 |
1.0+1.2 |
17.0 |
310 |
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