Medium voltage single core cable 6/10 kV, 12/20 kV, 18/30 kV, XLPE insulated, PE sheathed, with screen of Cu conductors, longitudinally watertight
Application
Medium voltage power cable for static application in ground, within and outside facilities, outdoor, in cable canals, in dry areas or in water. PE sheath secures increased mechanical resistance during and after laying. Swellable tape blocks water spreading within the cable. Due to its very low factor of dielectric loss, which remains constant over its entire operating lifetime, and owing to excellent insulation property of XLPE-material, firmly longitudinally spliced with inner and external screen of semi-conductive material (extruded in one process), the cable has a high operating reliability. Used in transformer stations, switching blocks, in electric power plants and industrial plants. To avoid the effects of external impact, the adhering semi-conductive layer extruded between conductor and insulation, along with concentric copper conductor, secures restriction of electric field and resistance to partial discharges.
Standards
HRN HD 620 S1
IEC 60502-2
DIN VDE 0276 part 620
Construction
Conductor: Cu round conductor, multi wire stranded compacted (RM), class 2 acc. to HRN HD 383 / IEC 60228 / DIN VDE 0295
Inner screen: extruded semi-conductive skin on conductor
Insulation: XLPE (cross-linked polyethylene, recent mark: PE-X) compound DIX 8 acc. to HRN HD 620 S1
External screen: extruded semi-conductive skin on insulation, longitudinally spliced with insulation (+tape of semi-conductive material)
Swellable tape: watertight, semi-conductive
Concentric conductor: in inner layer corrugated spirally wrapped copper wires, in external layer copper tape wrapped in counter-helix
Separating tape
Sheath: rigid PE (polyethylene) compound DMP 2 acc. to HRN HD 620 S1
sheath colour: black
Technical data
Temperature range:
during installation: -20 °C up to +70 °C
max. operating temp.: +90 °C
at short circuit of max. 5 s: up to 250 °C
Minimal inner bending radius: 15D
Behaviour in fire: Halogen-free polyethylene sheath, but it is NOT self-extinguishing and fire-resistant acc. to IEC 60332-1
