N2XSEY cable is a three-core medium-voltage power cable with stranded copper conductors, screened XLPE insulation and a common PVC outer sheath. Three phase cores form one assembled cable for fixed distribution.
The reference CU/XLPE/CTS/PVC construction uses metallic screening but no armour. The shared sheath distinguishes it from a circuit of three separate single-core cables and changes handling mass, cable-entry dimensions and installation geometry.
CONSTRUCTION
- Conductors
- Three stranded copper phase conductors
- Insulated cores
- Semiconductive screens and XLPE insulation
- Metallic screens
- Copper tape screening in the reference construction
- Assembly
- Filler and common PVC sheath; unarmoured
CHARACTERISTICS
- Reference voltage
- 12/20 kV for the displayed dataset
- Core layout
- Three screened cores in one cable body
- Thermal reference
- 90°C maximum operating conductor temperature in the source design
- Standard context
- IEC 60502-2 and relevant VDE/HD project requirements
N2XSEY for Fixed Power Distribution
Voltage, conductor/screen size and route conditions define the project configuration.
N2XSEY Cable Technical Data
Recommended Reference Data: published values for preliminary comparison. Final supply dimensions, ratings and size range follow the agreed XWA datasheet.
| Cable size (mm²) | DC resistance 20°C (Ω/km) | Approx. OD (mm) | Approx. mass (kg/km) | Air (A) | Ground (A) |
|---|---|---|---|---|---|
| 3 x 95/16 | 0.1930 | 67.0 | 6900 | 326 | 316 |
| 3 x 150/25 | 0.1240 | 74.5 | 9250 | 426 | 404 |
| 3 x 185/25 | 0.0991 | 78.5 | 10650 | 488 | 457 |
| 3 x 240/25 | 0.0754 | 85.0 | 13000 | 576 | 532 |
| 3 x 300/25 | 0.0601 | 90.0 | 15250 | 654 | 599 |
| 3 x 400/35 | 0.0470 | 98.0 | 19100 | 750 | 685 |
Three-core CU/XLPE/CTS/PVC, 12/20 kV. Diameter and mass refer to the assembled cable; the slash notation identifies the separately specified metallic-screen section.
Reference ampacity: one system; air 30°C, load factor 1.0; ground 20°C, depth 0.7 m, thermal resistivity 1.0 K·m/W, load factor 0.7. Reference conductor limit: 90°C. Continuous full-load burial requires a rating calculated at load factor 1.0.
Three-core construction and accessory interfaces
N2XSEY assembles the three phase cores within a common sheath. Separate single-core cables permit flat or trefoil formation; each arrangement has its own current-rating, handling and support requirements.
Termination stress-control components fit the insulation diameter and screen treatment. Glands and entry seals fit the complete cable diameter. The 3×240/25 reference is approximately 85 mm in diameter and 13 kg/m, before drum tare; handling calculations therefore use assembly mass, not copper mass alone.
Applications and Installation Conditions
Industrial distribution, substation connections and suitable underground or ducted feeders can use this combined three-core assembly. Cable diameter, mass and bending limits inform route access and pulling equipment. Routes requiring armour, water blocking or enhanced fire performance use the corresponding construction.
The manufacturing specification defines screens, insulation and sheath thicknesses, accessory dimensions and tests for the three-core assembly. The official standard scope describes the fixed-distribution cable framework.
N2XSEY and Related Constructions
| Model | Main difference |
|---|---|
| N2XSY single-core cable | Each phase cable has its own sheath; circuit geometry and bonding need separate assessment. |
| 20 kV cable range | Voltage-class context for 12/20(24) kV projects, rather than an exact three-core model. |
| Armoured MV construction | Mechanical armour adds a separate layer and changes the specified design and dimensions. |
N2XSEY Cable FAQs
Does N2XSEY mean the cable is armoured?
The reference N2XSEY construction is screened and unarmoured. Its metallic screen performs an electrical duty; mechanically protected variants add a separate armour layer.
Can 12/20 kV dimensions be used for a 6/10 kV variant?
The table covers the stated 12/20 kV construction. A 6/10 kV version uses its own insulation dimensions and construction-specific rating data.
Is N2XSEY the same as three N2XSY cables?
N2XSEY combines three phase cores inside a common sheath. Three N2XSY cables are separately sheathed single-core products, with different handling and installation arrangements.