N2XSEYFGbY
Three-core XLPE medium-voltage power cable, copper, flat-steel-wire armoured, 6/10 to 18/30 kV
N2XSEYFGbY is the armoured copper MV cable: flat steel wire armour (FSWA) under a PVC sheath for mechanical protection when buried directly. In all four voltage classes. Supplied to order; the lead time is stated in the quote.
N2XSEYFGbY is a three-core, individually screened, cross-linked polyethylene (XLPE) insulated medium-voltage power cable with galvanised flat-steel-wire armour, for industrial and utility distribution networks. Each copper conductor carries an extruded semi-conductive conductor screen, XLPE insulation, an extruded semi-conductive insulation screen and an individual copper wire screen; the three screened cores are laid up with fillers, covered by an extruded PVC inner sheath, armoured with galvanised flat steel wires bound by a galvanised steel-tape counter helix, and protected by a PVC outer sheath. The armour provides mechanical protection for direct burial and for installation in ground, ducts, cable trenches and industrial plant where additional protection is required. Available from 6/10 to 18/30 kV to IEC 60502-2, constructed following DIN VDE 0276-620.
Also known as: armoured medium voltage cable
Applications
- Direct burial where mechanical protection or pressure load applies.
- Routes with a raised risk of digging or ground-pressure damage.
What to look out for
- Earth the steel wire armour and copper screen at both ends through the termination; the armour is there for tension and pressure, not as the installation earth.
- The aluminium counterpart is NA2XSEYFGbY.
- Conductor
- Stranded circular (RM) or shaped (SM) plain copper, class 2 acc. to IEC 60228.
- Conductor screen
- Extruded semi-conductive compound.
- Insulation
- Cross-linked polyethylene (XLPE), nominal thickness per voltage class (3.4 mm at 6/10 kV, 4.5 mm at 8.7/15 kV, 5.5 mm at 12/20 kV, 8.0 mm at 18/30 kV).
- Insulation screen
- Extruded semi-conductive compound with a semi-conductive tape.
- Core screen
- Copper wire screen with a copper equalising/counter tape, applied over each core.
- Lay-up
- Three screened cores laid up with fillers and a binder tape.
- Inner sheath
- Extruded polyvinyl chloride (PVC) bedding.
- Armour
- Galvanised flat steel wires (F) with a galvanised steel-tape counter helix (Gb).
- Outer sheath
- Polyvinyl chloride (PVC), black (red or other colours on request).
- Rated voltage Uo/U
- 6/10 (12) to 18/30 (36) kV.
- Test voltage
- 3.5 × Uo for 5 min (routine test acc. to IEC 60502-2): 21 kV at 6/10, 30.5 kV at 8.7/15, 42 kV at 12/20 and 63 kV at 18/30 kV.
- Standard
- IEC 60502-2, constructed following DIN VDE 0276-620; conductors acc. to IEC 60228.
- Flame-retardant
- Acc. to IEC 60332-1-2 (single vertical cable).
- Max. conductor temperature
- +90 °C (normal operation).
- Max. short-circuit temperature
- +250 °C (max. 5 s).
- Min. bending radius, fixed
- 15 × outer diameter.
Voltage classes
| Voltage class Uo/U | Highest voltage Um | Insulation nom. |
|---|---|---|
| 6/10 kV | 12 kV | 3.4 mm |
| 8.7/15 kV | 17.5 kV | 4.5 mm |
| 12/20 kV | 24 kV | 5.5 mm |
| 18/30 kV | 36 kV | 8.0 mm |
N2XSEYFGbY or three N2XS(F)2Y?
N2XSEYFGbY
- one cable, three cores
- flat steel wire armour
- PVC inner and outer sheath
- 6/10 to 18/30 kV
three × N2XS(F)2Y
- three separate cables
- unarmoured
- PE sheath, longitudinally watertight
- also 20.8/36 kV
N2XSEYFGbY is one cable with three individually screened copper cores, a PVC inner sheath, flat steel wire armour and a PVC outer sheath, from 6/10 to 18/30 kV. Three separate N2XS(F)2Y cables are unarmoured, but longitudinally watertight with a PE sheath, and also come in 20.8/36 kV. If the cable needs mechanical protection when buried directly, choose N2XSEYFGbY. For 20.8/36 kV choose three N2XS(F)2Y.
View N2XS(F)2Y →N2XSEYFGbY or NA2XSEYFGbY?
N2XSEYFGbY
- copper conductors
- smaller cross-section
NA2XSEYFGbY
- aluminium conductors
- larger cross-section
The build is the same: three screened cores, flat steel wire armour and PVC sheaths, from 6/10 to 18/30 kV. N2XSEYFGbY has copper conductors, NA2XSEYFGbY aluminium. Aluminium is lighter and more economical, but needs a larger cross-section for the same current. Choose copper where the cable must stay as compact as possible.
View NA2XSEYFGbY →
NA2XS(F)Y
Single-core aluminium XLPE MV cable, copper wire screen, longitudinally watertight, PVC sheath, 6/10 to 18/30 kV
Lead time: On request; the lead time is stated in the quote.
EAXeCWB
Single-core Al XLPE MV cable, Cu wire screen, longitudinally watertight, 8.7/15 to 20.8/36 kV
Lead time: On request; the lead time is stated in the quote.
EAXeCGB
Single-core Al XLPE MV cable, Cu wire screen, longitudinally watertight, halogen-free sheath, 8.7/15 to 20.8/36 kV
Lead time: On request; the lead time is stated in the quote.
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