Reeling Cables
Applications
Cables with reinforced polyurethan sheath, are especially designed for reeling and tunelling applications. Also used for grabs unloaders.
Design
1. Conductor : Flexible plain copper class 5 IEC 60228
2. Semi conductive layer
3. Insulation : EPR
4. Semi conductive layer
5. Protective earth conductor : Flexible plain copper class 5 IEC 60228
6. Semi conductive layer : On earth conductors
7. Outer sheath
PUR Double layer with anti twisting reinforcement
Colour: red
Marking
BUFLEX SEM – Voltage
Number of cores – cross-section
NEXANS – year – week
Core Identification
Six cores design:
– 3 phase cores
– 3 protective earth cores
Standards
Nexans specification
Mechanical properties
| Max. tensile load | 20 N/mm2 of copper cross section |
| Bending radii | see construction characteristics page 3.1 E |
| Tests | alternating/reversed bending test, torsional resistance test |
| Reeling speed | up to 120 m/min (for higher speed contact us) |
Chemical properties
Oil resistant.
For outdoor applications. Moisture, UV and ozone resistance.
Electrical and Thermal properties
| Nominal voltage : | Uo/U | 3.6/6 kV to 12/20 kV |
| Maximum operating voltage in AC systems | Um | 1.2 x U |
| Test voltage | 3.5 x Uo in AC | |
| Max. temperature at the conductor: | ||
| – in service | + 90 °C | |
| – under short-circuit conditions | + 250 °C | |
| Max. surface temperature: | ||
| – fixed installation | – 40 °C up to + 80 °C | |
| – mobile operation | – 25 °C up to + 80 °C | |
BUFLEX® SEM
| Number of cores and nominal cross-section |
Number of cores and nominal cross-section |
Outer diameter | Weight approx. |
Tensile load |
| (mm2) | Min. (mm) | Max. (mm) | (kg/km) | (N) |
| 3.6/6 (7.2) kV | ||||
| 3 x 25 + 3 x 10 | 35 | 38 | 1,900 | 2,100 |
| 3 x 35 + 3 x 10 | 38 | 41 | 2,300 | 2,700 |
| 3 x 50 + 3 x 10 | 41 | 44 | 2,860 | 3,600 |
| 3 x 70 + 3 x 16 | 45 | 48 | 3,800 | 5,160 |
| 3 x 95 + 3 x 16 | 49.5 | 53 | 4,700 | 6,600 |
| 3 x 120 + 3 x 25 | 54 | 57.5 | 5,900 | 8,700 |
| 3 x 150 + 3 x 25 | 57.5 | 61.5 | 6,950 | 10,500 |
| 6/10 (12) kV | ||||
| 3 x 25 + 3 x 10 | 35 | 38 | 1,900 | 2,100 |
| 3 x 35 + 3 x 10 | 38 | 41 | 2,300 | 2,700 |
| 3 x 50 + 3 x 10 | 41 | 44 | 2,860 | 3,600 |
| 3 x 70 + 3 x 16 | 45 | 48 | 3,800 | 5,160 |
| 3 x 95 + 3 x 16 | 49.5 | 53 | 4,700 | 6,600 |
| 3 x 120 + 3 x 25 | 54 | 57.5 | 5,900 | 8,700 |
| 3 x 150 + 3 x 25 | 57.5 | 61.5 | 6,950 | 10,500 |
| 8.7/15 (18) kV | ||||
| 3 x 25 + 3 x 10 | 35 | 38 | 1,900 | 2,100 |
| 3 x 35 + 3 x 10 | 38 | 41 | 2,300 | 2,700 |
| 3 x 50 + 3 x 10 | 41 | 44 | 2,860 | 3,600 |
| 3 x 70 + 3 x 16 | 45 | 48 | 3,800 | 5,160 |
| 3 x 95 + 3 x 16 | 49.5 | 53 | 4,700 | 6,600 |
| 3 x 120 + 3 x 25 | 54 | 57.5 | 5,900 | 8,700 |
| 3 x 150 + 3 x 25 | 57.5 | 61.5 | 6,950 | 10,500 |
| 12/20 (24) kV | ||||
| 3 x 25 + 3 x 10 | 44 | 47 | 2,650 | 2,100 |
| 3 x 35 + 3 x 10 | 44.5 | 47.5 | 2,900 | 2,700 |
| 3 x 50 + 3 x 10 | 45.5 | 49 | 3,300 | 3,600 |
| 3 x 70 + 3 x 16 | 49.5 | 53 | 4,300 | 5,160 |
| 3 x 95 + 3 x 16 | 53 | 56.5 | 5,100 | 6,600 |
