What are Portuguese MV Power Cable designation?
December 13, 2025
Different countries have their own cable nomenclature, generally with a combination of alphanumeric descriptions which together build up a designation which clearly defines the voltage rating and materials employed. Below are Medium Voltage cables esignation in Portugal.
| X | Copper Conductor |
| LX | Aluminium Conductor |
| HI | Metallic Screen - Copper Tape |
| HIO | Metallic Screen - Copper Wires |
| R | Steel wire armour (for multi-core cables) |
| A | Steel tape armour (for multi-core cables) |
| 1R / 1A | Aluminium armour/aluminum tape armour (for single core cables) |
| L | Longitudinal waterblocking tape |
| XS | 3x1 core with messenger wire with XLPE sheath |
| E | Polyethylene (PE) Outer Sheath |
| V | Polyvinyl Chloride (PVC) Outer Sheath |
| Z1 | Polyolefin Outer Sheath DMZ1 or DMZ2 for Low Smoke Halogen-free cables |
| (ce) | Longitudinal water tightness in conductor |
| (be) | Longitudinal water tightness in metallic screen |
| (cbe) | Longitudinal water tightness in conductor and metallic screen |
| flr | Minimum CPR Classification Eca |
| frt | Minimum CPR classification Cca s1b, d1, a1 |