NLS Industries
MV Power Cables

MV Power Cables

Medium voltage power cable covers the 3.3kV to 33kV range used for substation feeders and primary distribution. NLS sources single-core and three-core XLPE MV cable, copper or aluminum conductor, to IEC 60502-2 and BS 6622, matched to the voltage class, conductor size, and screening a project's single-line diagram specifies.

MV power cable carries power at higher voltage than LV cable to reduce current for a given load, which means smaller conductor cross-sections over long feeder runs between substations, switchgear, and large motor or transformer loads. The construction adds a semi-conductive screen around the XLPE insulation and a copper wire or tape screen, which controls the electrical field at the insulation surface, something LV cable doesn't need but MV cable can't function safely without.

NLS sources MV cable in single-core and three-core configurations across the common Saudi voltage classes, 3.3kV, 6.6kV, 11kV, 22kV, and 33kV, copper or aluminum conductor, to IEC 60502-2 as the core standard and BS 6622 where British-derived specs apply. Armor (steel wire or tape) is standard on direct-burial and trench routes.

On Saudi industrial and utility projects, MV cable runs between grid connection points and site substations, between substations and large motor loads, and as ring-main feeders on larger industrial and process sites. This is a project-critical item: a wrong voltage class or screening spec on an MV order isn't a small fix once the cable's on site.

Because of the voltage and screening requirements, MV cable is typically made to order rather than held in general stock anywhere in the supply chain. NLS quotes against the single-line diagram or cable schedule, voltage class, conductor size, and drum length, and returns a priced quote in USD with lead time confirmed by the manufacturer once the exact specification is set.

Specifications

  • Voltage classes: 3.3kV, 6.6kV, 11kV, 22kV, 33kV
  • Insulation: XLPE with semi-conductive screen and copper wire/tape screen
  • Configuration: single-core and three-core
  • Standards referenced: IEC 60502-2, BS 6622
  • Armor: SWA or STA for direct burial and trench routes
  • Conductor: stranded copper or aluminum

Frequently Asked Questions

What voltage classes does NLS supply for MV cable?+

3.3kV, 6.6kV, 11kV, 22kV, and 33kV, in single-core and three-core, copper or aluminum conductor, matched to the project's single-line diagram.

Why does MV cable need a metallic screen when LV cable doesn't?+

The screen controls the electrical field at the insulation surface, which becomes significant at medium voltage. Without it the cable can't operate safely at those voltage levels.

How long does MV cable take to deliver in Saudi Arabia?+

MV cable is generally made to order rather than kept in general stock, so lead time depends on the manufacturer once voltage class, screening, and drum length are confirmed.