450/750V Limited Fire Hazard Earthing Cables to SE774

Application

The single core signalling earth and power cables are used in safety signalling equipment rooms.

Standard

  • SE774
  • UNE 21027

Cable Construction

450/750V Limited Fire Hazard Earthing Cables to SE774 Railway Cable
Conductors Stranded tinned copper conductors.
Insulation Thermoplastic LSZH.

Electrical Characteristics at 20℃

Nominal Conductor Cross Section mm^2 1.0 4.0 6.0 16.0 35.0
Maximum DC Conductor Resistance Ω/km 18.2 4.7 3.11 1.16 0.529
Voltage Rating KV 0.45/0.75

Mechanical and Thermal Properties

  • Minimum Bending Radius: 7.5×OD
  • Temperature Range:-25℃ to +85℃ (during operation); -10℃ to +70℃ (during installation)

Dimensions and Weight

Cable Code No. of cores& Nominal Conductor Cross Sectional Area No. & Nominal Diameter of Strands Nominal Insulation Thickness Nominal Overall Diameter Nominal Weight
  No.×mm^2 No/mm mm mm kg/km
RF774-ES07Z-U-450/750V-1G1 1×1.0 1/1.13 0.6 4.0 28
RF774-ES07Z-U-450/750V-1G4 1×4.0 7/0.85 0.8 5.5 33
RF774-ES07Z-U-450/750V-1G6 1×6.0 7/1.04 0.8 6.1 90
RF774-ES07Z-U-450/750V-1G16 1×16.0 7/1.7 1.0 8.1 197
RF774-ES07Z-U-450/750V-1G35 1×35.0 19/1.53 1.2 10.9 389

U is changed to K if the stranding class is changed from class 2 to class 5