Medium Voltage Cable Standards
| MV Cable Standard | MV Standard Description |
| IEC 60502-2 | Cables with extruded insulation with voltage rating between 6kV and 30kV |
| N2XSH / N2XS(F)H / N2XS(FL)H NA2XSH / NA2XS(F)H / NA2XS(FL)H |
Single core Copper (N) or Aluminium (NA) XLPE/LSZH cables in accordance with IEC60502-2 with optional single or dual waterblocking. Available as 3-core variants under references N2XSEH / NA2XSEH. |
| N2XS2Y / N2XS(F)2Y / N2XS(FL)2Y NA2XS2Y / NA2XS(F)2Y / NA2XS(FL)2Y |
Single core Copper (N) or Aluminium (NA) XLPE/MDPE cables in accordance with IEC60502-2 with optional single or dual waterblocking. Available as 3-core variants under references N2XSE2Y / NA2XSE2Y. |
| N2XSY NA2XSY |
Single core Copper (N) or Aluminium (NA) XLPE/PVC cables in accordance with IEC60502-2. Available as 3-core variants under references N2XSEY. |
| BS6622 | Armoured cable with PVC outer sheathing and voltage rating from 3.3/6kV to 19/33kV - AWA single core, SWA multicore. |
| BS7835 | Armoured cable with LSZH outer sheathing and voltage rating from 3.3/6kV to 19/33kV - AWA single core, SWA multicore. |
| BS7870-4.10 | Single core cables for distribution utilities with extruded insulation up to and including 11kV and 33kV |
| HD620 | Cables with extruded insulation and voltage ratings 3.6/6 (7.2)kV to 20.8/36 (42)kV (often seen in conjunction with IEC60502-2) |
| DIN VDE 0276 Part 620 | Distribution cables of nominal voltages 3.6kV to 20.8/36kV |
Whilst the German nomenclature for IEC60502-2 cables (eg: N2XSH) is widely used, there are other naming conventions also in use - Portuguese Medium Voltage cables include references LXHIOE and XHIOAV. Our team can support specification against all references, regardless of geography.
Medium Voltage Cable Construction
Construction will influenced by the installation environment but it will include the following:| MV Cable Layer | MV Cable Materials |
| Conductor | Copper or Aluminium - Class 1 solid, Class 2 stranded (circular, circular compacted, sectorial). Some flexible MV cables for dynamic equipment also available. |
| Optional: Conductor Waterblocking | Swellable powders or swellable yarns in stranded interstices |
| Conductor Screen | Semi-Conductive Layer |
| Insulation | XLPE (Cross-linked Polyethylene) or EPR (Ethylene Propylene Rubber) |
| Insulation Screen | Semi-Conductive Layer |
| Optional: Waterblocking - Longitudinal | Swellable powders or tape |
| Metallic Screen | Copper Wires and/or Copper Tape (around individual cores) |
| Optional: Waterblocking - Longitudinal | Swellable Tape |
| Optional: Inner Sheath | Applied where Armour is also applied. PVC or LSZH compound |
| Optional: Armour | Single Core: Aluminium Wires / Tape Multi-Core: Galvanised Steel Wires / Tape (Wires can be circular or flat, tapes can be single or double layer flat or corrugated) |
| Optional: Waterblocking - Radial | Aluminium/PET Tape with the aluminium side tightly bonded to outer sheath |
| Outer Sheath | LDPE, MDPE (Low/Medium Density Polyethylene), PVC (Polyvinyl Chloride), LSZH (Low Smoke Zero Halogen). Additives to offer resistance to UV, oils & greases, water, flames, termites, and other environmental factors can be added as required. |
Aluminium Medium Voltage Power Cables Types
| XLPE Insulation PVC Sheath |
XLPE Insulation PE Sheath |
Cross Section | |
| Twisted Cables 2-4 cores | NFA2XSY( Al / XLPE / CWS / PVC ) (Aluminium Conductor, XLPE Insulated, Copper Wire Screen, PVC Sheathed) |
NFA2XS2Y( Al / XLPE / CWS / PE ) (Aluminium Conductor, XLPE Insulated, Copper Wire Screen, PE Sheathed) |
up to 18/30 kV: 35-300 |
| 2-3 cores + steel messenger | NFA2XSY-T ( Al / XLPE / CWS / PVC ) (Aluminium Conductor, XLPE Insulated, Copper Wire Screen, PVC Sheathed with Galvanized Steel Support Messenger) |
NFA2XSY-T( Al / XLPE / CWS / PVC ) (Aluminium Conductor, XLPE Insulated, Copper Wire Screen, PVC Sheathed with Galvanized Steel Support Messenger) |
up to 18/30 kV: (50-240)+95 |
| Single Core + copper tape screen | NA2XSY( Al / XLPE / CTS / PVC ) (Aluminium Conductor, XLPE Insulated, Copper Tape Screen, PVC Sheathed) |
NA2XS2Y( Al / XLPE / CTS / PE ) (Aluminium Conductor, XLPE Insulated, Copper Tape Screen, PE Sheathed) |
3.6/6 kV:25-800 6/10 kV: 25-800 8.7/15 kV: 25-800 12/20 kV: 35-800 18/30 kV: 50-800 |
| + copper wire screen | NA2XCY( Al / XLPE / CWS / PVC ) (Aluminium Conductor, XLPE Insulated, Copper Wire Screen, PVC Sheathed) |
NA2XC2Y(Al / XLPE / CWS / PE ) (Aluminium Conductor, XLPE Insulated, Copper Wire Screen, PE Sheathed) |
3.6/6 kV:25-800 6/10 kV: 25-800 8.7/15 kV: 25-800 12/20 kV: 35-800 18/30 kV: 50-800 |
| + aluminium tape armor | NA2XSB(AL)Y( Al / XLPE / CTS / PVC / ATA/ PVC ) (Aluminium Conductor, XLPE Insulated, Copper Tape Screen, Aluminium Tape Armor, PVC Sheathed) |
NA2XSB(AL)2Y(Al / XLPE / CTS / PVC / ATA/ PE ) (Aluminium Conductor, XLPE Insulated, Copper Tape Screen, Aluminium Tape Armor, PE Sheathed) |
3.6/6 kV:25-800 6/10 kV: 25-800 8.7/15 kV: 25-800 12/20 kV: 35-800 18/30 kV: 50-800 |
| + aluminium wire armor | NA2XSR(AL)Y( Al / XLPE / CTS / PVC / AWA/ PVC ) (Aluminium Conductor, XLPE Insulated, Copper Tape Screen, Aluminium Wire Armor, PVC Sheathed) |
NA2XSR(AL)2Y(Al / XLPE / CTS / PVC / AWA/ PE ) (Aluminium Conductor, XLPE Insulated, Copper Tape Screen, Aluminium Wire Armor, PE Sheathed) |
3.6/6 kV:25-800 6/10 kV: 25-800 8.7/15 kV: 25-800 12/20 kV: 35-800 18/30 kV: 50-800 |
| Three Cores with individual copper tape screen | NA2XSEY( Al / XLPE / CTS / PVC ) (Aluminium Conductor, XLPE Insulated, Copper Tape Screen, PVC Sheathed) |
NA2XSE2Y( Al / XLPE / CTS / PE ) (Aluminium Conductor, XLPE Insulated, Copper Tape Screen, PE Sheathed) |
3.6/6 kV:25-300 6/10 kV: 25-300 8.7/15 kV: 25-300 12/20 kV: 35-300 18/30 kV: 50-300 |
| + steel round wire armor | NA2XSERY( Al / XLPE / CTS / PVC / SWA/ PVC ) (Aluminium Conductor, XLPE Insulated, Copper Tape Screen, Galvanized Steel WireArmor, PVC Sheathed) |
NA2XSER2Y( Al / XLPE / CTS / PVC / SWA/ PE ) (Aluminium Conductor, XLPE Insulated, Copper Tape Screen, Galvanized Steel WireArmor, PE Sheathed) |
3.6/6 kV:25-300 6/10 kV: 25-300 8.7/15 kV: 25-300 12/20 kV: 35-300 18/30 kV: 50-300 |
| + steel flat wire armor | NA2XSEFGbY( Al / XLPE / CTS / PVC / SFWA/ PVC ) (Aluminium Conductor, XLPE Insulated, Copper Tape Screen, Galvanized Steel Flat WireArmor, PVC Sheathed) |
NA2XSEFGb2Y( Al / XLPE / CTS / PVC / SFWA/ PE ) (Aluminium Conductor, XLPE Insulated, Copper Tape Screen, Galvanized Steel Flat WireArmor, PE Sheathed) |
3.6/6 kV:25-300 6/10 kV: 25-300 8.7/15 kV: 25-300 12/20 kV: 35-300 18/30 kV: 50-300 |
| + double steel tape armor | NA2XSEBY( Al / XLPE / CTS / PVC / STA/ PVC ) (Aluminium Conductor, XLPE Insulated, Copper Tape Screen, Galvanized Steel TapeArmor, PVC Sheathed) |
NA2XSEB2Y( Al / XLPE / CTS / PVC / STA/ PE ) (Aluminium Conductor, XLPE Insulated, Copper Tape Screen, Galvanized Steel TapeArmor, PE Sheathed) |
3.6/6 kV:25-300 6/10 kV: 25-300 8.7/15 kV: 25-300 12/20 kV: 35-300 18/30 kV: 50-300 |
