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.
