U72 | U72-H
...x4x0.5 (0.8)
Specification
PTT 844.13
Transmission element – each 4 wires twisted to a star quad. Cable core is transmission elements stranded in layers.
Application
» telephone, signaling and data transmission
» permanent installation on and under plaster in dry or damp rooms, permanent installation on external walls
Environmental conditions
Temperature ranges for laying and assembly –5 °C to +50 °C
Operation and store temperatures – 30 °C to +70 °C
Permitted minimum bending radius min. 10D
Cable lifetime min. 30 years
D – outside cable diameter
Electrical parameters (20 °C)
| Conductor diameter | mm | 0.5 |
|---|---|---|
| Max. loop resistance | Ω/km | 97.8 |
| Insulation resistance min. | GΩ.km | 2 |
| Mutual capacitance | nF/km | 70/60 |
| Capacity unbalance k1 | pF/500 m | 450 |
| Effective test voltage wire/wire at 50 Hz | V | 2000 |
| Effective test voltage wire/shield at 50 Hz | V | 2,000 |
| Operating volteage | Vss | 300 |
| Wire/core diameter 0.5/0.9 mm | Wire/core diameter 0.8/1.4 mm | |||||
| Number of units | External diameter [mm] | Net weight [kg/km] | Standard production length [m] | External diameter [mm] | Net weight [kg/km] | Standard production length [m] |
| Stranded in layers | ||||||
| 1 | 5 | 19 | 500, 1,000, 2,000 | 5.6 | 39 | 500, 1,000, 2,000 |
| 2 | 7.5 | 34 | 500, 1,000, 2,000 | 8.6 | 76 | 500, 1,000, 2,000 |
| 3 | 7 | 44 | 500, 1,000, 2,000 | 9 | 100 | 500, 1,000, 2,000 |
| 5 | 8.5 | 65 | 500, 1,000, 2,000 | 11.4 | 157 | 100, 250, 500, 1,000 |
| 7 | 9.5 | 95 | 2,000 | 13.5 | 221 | 2,000 |
| 10 | 11.5 | 127 | 2,000 | 15 | 297 | 2,000 |
| 13 | 12 | 157 | 2,000 | – | 374 | – |
| 15 | 13.5 | 182 | 2,000 | 17 | 440 | 2,000 |
| 20 | 15.5 | 239 | 2,000 | 19.5 | 567 | 2,000 |
| 25 | 17 | 292 | 2,000 | 22 | 699 | 2,000 |
| 30 | 18 | 340 | 1,000 | 23 | 878 | 1,000 |
| 50 | 23 | 548 | 1,000 | 29.5 | 1,452 | 1,000 |
| 60 | 25 | 652 | 1,000 | |||
| 80 | 28.5 | 866 | 1,000 | |||
| 100 | 32 | 1,085 | 1,000 | |||