Buflex® SEM OFE Cable

Buflex Sem Ofe CableReeling Cables with integrated Optical Fibres up to 12/20 (24) kV up to 12/20 (24) kV

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 : On earth conductor
Buflex SEM OFE Design7. Optical Fibers Element : Multimode 62.5/125 μm
8. Outer sheath

PUR double layer with anti twisting reinforcement
Colour: red

Marking

BUFLEX SEM OFE – Voltage
Number of cores – cross-section
NEXANS – year – week

Core Identification

Six cores design:
– 3 phase cores
– 2 protective earth cores
– 1 optical fiber element

Standards

Nexans specification

Mechanical properties

Max. tensile load 20 N/mm2 of copper cross section
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, Optical 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
Current rating (A) see electrical characteristics page 3.2 B
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 OFE

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 + 2 x 10 + OFE 35 38 1,900 2,100
3 x 35 + 2 x 16 + OFE 38 41 2,300 2,700
3 x 50 + 2 x 16 + OFE 41 44 2,860 3,600
3 x 70 + 2 x 25 + OFE 45 48 3,800 5,160
3 x 95 + 2 x 25 + OFE 49.5 53 4,700 6,600
3 x 120 + 2 x 35 + OFE 54 57.5 5,900 8,700
3 x 150 + 2 x 35 + OFE 57.5 61.5 6,950 10,500
6/10 (12) kV 
3 x 25 + 2 x 10 + OFE 35 38 1,900 2,100
3 x 35 + 2 x 16 + OFE 38 41 2,300 2,700
3 x 50 + 2 x 16 + OFE 41 44 2,860 3,600
3 x 70 + 2 x 25 + OFE 45 48 3,800 5,160
3 x 95 + 2 x 25 + OFE 49.5 53 4,700 6,600
3 x 120 + 2 x 35 + OFE 54 57.5 5,900 8,700
3 x 150 + 2 x 35 + OFE 57.5 61.5 6,950 10,500
8.7/15 (18) kV 
3 x 25 + 2 x 10 + OFE 35 38 1,900 2,100
3 x 35 + 2 x 16 + OFE 38 41 2,300 2,700
3 x 50 + 2 x 16 + OFE 41 44 2,860 3,600
3 x 70 + 2 x 25 + OFE 45 48 3,800 5,160
3 x 95 + 2 x 25 + OFE 49.5 53 4,700 6,600
3 x 120 + 2 x 35 + OFE 54 57.5 5,900 8,700
3 x 150 + 2 x 35 + OFE 57.5 61.5 6,950 10,500
12/20 (24) kV 
3 x 25 + 2 x 10 + OFE 44 47 2,650 2,100
3 x 35 + 2 x 16 + OFE 44.5 47.5 2,900 2,700
3 x 50 + 2 x 16 + OFE 45.5 49 3,300 3,600
3 x 70 + 2 x 25 + OFE 49.5 53 4,300 5,160
3 x 95 + 2 x 25 + OFE 53 56.5 5,100 6,600

 

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