Buflex® SEM Cable

Nexans Buflex Sem CablesReeling 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

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