300V DC Negative Traction Cables

Application

These DC power cables are used for urban railways for 1500V DC traction power system with feedback current and return current, suitable for fixed installation. The cables are suitable for installations in ducts, tunnels, and cable troughs or on the cable bridges etc.

Standard

  • IEC60092
  • BS 7655
  • IEC60502
  • BS 6883 Type 657 SW4

Cable Construction

300V-DC
  • Conductor: Class 2 stranded annealed bare copper conductors to BS EN 60228: 2005 (previously BS 6360).
  • Core Wrapping: PETP (Polyethylene Terephthalate).
  • Sheath: Thermosetting LSZH compound SW4 or LRS1 to BS 7655 / ICEA T-33-655 with enhanced oil resistance, and minimum tear resistance.

Electrical Characteristics at 20℃

Nominal Conductor Cross Section mm² 70 95 120 150 185 240 300 400 500
Maximum DC Conductor Resistance Ω/km 0.277 0.21 0.164 0.132 0.108 0.0817 0.0654 0.0495 0.0391
Minimum Insulation Resistance MΩ.km 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8
Conductor Short Circuit Current 1s kA 10.0 13.5 17.1 21.4 16.4 34.3 42.9 57.2 71.5
Voltage Rating KV 0.3

Mechanical and Thermal Properties

  • Minimum Bending Radius: 6×OD
  • Temperature Range: -40℃ to +90℃ (during operation); -25℃ to +60℃ (during installation)

Dimensions and Weight

Cable Code No. of cores& Nominal
Conductor Cross
Sectional Area
No.×mm²		 No. & Nominal
Diameter of
Strands
No/mm		 Nominal
Insulation
Thickness
mm		 Nominal
Overall
Diameter
mm		 Nominal
Weight
kg/km		 Polarity
RF6883-ES05Z1-U-300N-1G70 1×70 19/2.14 4.0 19.4 1055 Negative
RF6883-ES05Z1-U-300N-1G95 1×95 19/2.52 4.0 20.7 1307 Negative
RF6883-ES05Z1-U-300N-1G120 1×120 37/2.03 4.0 22.6 1598 Negative
RF6883-ES05Z1-U-300N-1G150 1×150 37/2.25 4.0 24.3 1913 Negative
RF6883-ES05Z1-U-300N-1G185 1×185 37/2.52 4.0 26.3 2274 Negative
RF6883-ES05Z1-U-300N-1G240 1×240 61/2.25 4.0 29.1 2893 Negative
RF6883-ES05Z1-U-300N-1G300 1×300 61/2.52 4.0 32.3 3530 Negative
RF6883-ES05Z1-U-300N-1G400 1×400 61/2.85 4.0 36.3 4532 Negative
RF6883-ES05Z1-U-300N-1G500 1×500 91/2.65 4.0 40.3 5684 Negative
RF6883-ES05Z1-U-300N-1G630 1×630 127/2.52 4.0 42.3 6400 Negative
RF6883-ES05Z1-U-300N-1G800 1×800 127/2.85 4.0 46.5 8094 Negative