NYY unarmoured 1kV power single or multicore cables have an especially tough sheath and are designed for fixed power and control use, primarily in industrial applications. Also known as NYY-J (including earth) and NYY-O (without earth) they can be used as an alternative to the old Delta Hi-tuf cables.
Suitable for installation indoors, outdoors, in ducts, in water or underground where armour is not required.
|Construction – NYY unarmoured 1kV power|
|solid or stranded plain copper conductors|
|polyvinylchloride (PVC) core insulation|
|cores twisted concentrically (in multicores only)|
|filling compound over the core assembly|
|black hardened PVC outer sheath|
|Technical – NYY unarmoured 1kV power|
|conductor make-up:||class 1 (solid) or class 2 (non-flexible stranded)|
|– see Stranding/Resistance page|
|bend radius:||single core = 15 x overall diameter|
|multicore = 12 x overall diameter|
|voltage rating:||600/1000V operating , 4000V test|
|current rating:||as per NYY and NYCY chart, see Current Ratings page|
|temperature range:||+5°C to +50°C flexible, -30°C to +70°C static|
|construction:||generally to VDE 0276-603|
|flame retardant:||according to IEC 60332-1, VDE 0482-332-1-2|
|core identification:||single core = black or green/yellow inner insulation|
|2 cores = coloured to VDE 0293 without earth, see Colour Codes page|
|3 to 5 cores = coloured to VDE 0293 with earth (inc. in core count)|
|6+ cores = numbered black cores with earth (inc. in core count)|
A printable specification is available here: NYY unarmoured 1kV power cable, single/multicore.
A similar cable with low smoke zero halogen sheathing can be found here: N2XH XLPE/LSOH 1kV
For similar screened or armoured cables return to the PVC Power & General Wiring front page.