Standard: SRPS N.C5.220
DIN VDE 0276-620; HD 620 S2
Nominal voltage U0/U: 6/10 kV
Test voltage: 21 kV
Conductor: multi-core copper conductor class 2 copper PHP 81 (NYSEYBY) or aluminum conductor PHP 81-A (NAYSEYBY), according to SRPS N.C0.015, IEC 60228.
Inner semi-conductive layer
Insulation: special high-voltage PVC compound.
Outer semi-conductive layer: extruded,
with wrapped semi-conductive tape over
Electric protection (screen): wrapped annealed copper wires with contra-helical annealed copper tape or wrapped copper tape.
Core: 3 cores are stranded together.
Separate sheath: extruded, non hygroscopic
layer over the core that completely fills the
space between the cores.
Armour: wrapped two steel tapes.
Sheath: PVC compound
Sheath colour black; for use in mine red colour.
In urban networks, industrial plants and electric
power plants, when the cable is exposed to mechanical damages. Indoors, in the open air, in ducts, in earth when mechanical protection is required.
Permissible conductor temperature:
– max operating temperature +70°C
– in short circuit (max 5 s), max +160°C
Permissible environment temperature:
at laying and handling, min +5°C
BENDING RADIUS (min.):
– 15D (D – cable diameter)