33KV Power Cables to BS 7835 NR/PS/ELP/00008
Application
The cables are used to distribute three phase a.c. electrical power supplies at nominal system voltages of 33KV to traction substations on D.C. electrifi ed lines.
Standards
● NR/PS/ELP/00008(formerly RT/E/PS/00008)
● BS 6622, BS 6234, BS 7454
● IEC 60502-2, IEC60840
Construction
Conductors
Class 1 circular solid aluminium (for 185 mm²) or class 2 compact circular stranded plain copper (for 300mm²) to BS EN 60228: 2005 (previously BS 6360).
Conductor Screen
Extruded semi-conducting XLPE (Cross-Linked Polyethylene) solidly bonded.
Insulation
XLPE (Cross-Linked Polyethylene).
Insulation Screen
Extruded semi-conducting XLPE (Cross-Linked Polyethylene), solidly bonded and cold strippable.
Separator
Semi conducting water blocking tape.
Screen
Copper wire screen, helically wound with equalising copper tape.
Separator
Semi conducting water blocking tape.
Sheath
Graphite coated MDPE type TS2.
Electrical Characteristics at 20℃
| Nominal Conductor Cross Section |
mm² |
185 |
300 |
| Maximum DC Conductor Resistance |
Ω/km |
0.164 |
0.0601 |
| Capacitance |
μF/km |
0.205 |
0.243 |
| Voltage Rating |
KV |
19/33 |
19/33 |
Mechanical and Thermal Properties
Minimum Bending Radius: 15×OD
Temperature Range:0℃ to +90℃ (during operation); 0℃ to +60℃ (during installation) |
