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PE Insulated ISDN Basic Access Air Core Cables
Application:
The cables are used as basic access for ISDN services in central office wiring and cabling for ISDN basic access installation.
Standards:
ER.f5.058
Construction:
Conductors: Solid annealed bare copper sized 0.5/0.6mm as per ASTM B-3/IEC 60228 class 1
Insulation: Solid polyethylene as per ASTM D 1248/IEC 60708
Twisted Pairs: Insulated conductors are twisted into pairs with varying lays to minimize crosstalk
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
Core Wrapping: One or more non-hygroscopic polyester tapes are helically or longitudinally laid with an overlap
Sheath: PVC/LSZH
Ripcord (optional):
Nylon ripcord may be placed parallel to the cores to facilitate sheath removal
Electrical Properties:
| Nominal Conductor Diameter | mm | 0.5 | 0.6 |
|---|---|---|---|
| Conductor Gauge Size | AWG | 24 | - |
| Conductor Size | mm2 | 0.196 | 0.283 |
| Maximum Conductor Resistance @20°C | Ω/km | 91 | 63 |
| Minimum Insulation Resistance @500V DC | MΩ.km | 16000 | 16000 |
| Maximum Resistance Unbalance | % | 2.5 | 2.5 |
| Average Mutual Capacitance | nF/km | 52 | 52 |
| Maximum Capacitance Unbalance @1KHz pair-to-pair | pF/km | 260 | 260 |
| Maximum Capacitance Unbalance @1KHz pair-to-ground | pF/km | 2625 | 2625 |
| Maximum Average Attenuation @20KHz | dB/km | 4.9 | 3.9 |
| Maximum Average Attenuation @40KHz | dB/km | 6.2 | 4.8 |
| Maximum Average Attenuation @60KHz | dB/km | 7.0 | 5.6 |
| Maximum Average Attenuation @80KHz | dB/km | 7.7 | 6.0 |
| Maximum AverageAttenuation @100KHz | dB/km | 7.9 | 6.3 |
| Minimum ELFEXT pair-to-pair @20KHz | dB | 56 | 56 |
| Minimum ELFEXT pair-to-pair @40KHz | dB | 52 | 52 |
| Minimum ELFEXT pair-to-pair @60KHz | dB | 50 | 50 |
| Minimum ELFEXT pair-to-pair @80KHz | dB | 49 | 49 |
| Minimum ELFEXTpair-to-pair @100KHz | dB | 48 | 48 |
| Minimum NEXT pair-to-pair @20KHz | dB | 61 | 61 |
| Minimum NEXT pair-to-pair @40KHz | dB | 57 | 57 |
| Minimum NEXT pair-to-pair @60KHz | dB | 55 | 55 |
| Minimum NEXT pair-to-pair @80KHz | dB | 54 | 54 |
| Minimum NEXTpair-to-pair @100KHz | dB | 51 | 51 |
| Dielectric Strength Conductor to Conductor 3secs | V DC | 3600 | 3600 |
| Nominal Insulation Thickness | mm | 0.2 | 0.25 |
| Nominal Insulated Conductor Diameter | mm | 0.9 | 1.1 |
Mechanical and Thermal Properties:
Temperature range during operation (fixed state): -30°C – +70°C
Temperature range during installation (mobile state): -20°C – +50°C
Minimum bending radius: 15 x Overall Diameter
Colour Code:
Standard colour code is per BT CW 110J given in Colour Code Chart.
Dimensions And Weight:
| Cable Code | Number of Pairs | Nominal Sheath Thickness mm |
Nominal Overall Diameter mm |
Nominal Weight kg/km |
|---|---|---|---|---|
| 0.5mm Conductor, 0.9mm Insulated Wire | ||||
| TP58-2Y(St)Y2P05-ISDN-B | 2 | 0.8 | 4.5 | 23.0 |
| TP58-2Y(St)Y4P05-ISDN-B | 4 | 0.8 | 5.0 | 33.5 |
| 0.6mm Conductor, 1.1mm Insulated Wire | ||||
| TP58-2Y(St)Y2P06-ISDN-B | 2 | 1.0 | 5.5 | 30.0 |
| TP58-2Y(St)Y4P06-ISDN-B | 4 | 1.0 | 6.0 | 45.0 |