Power Cables and High-Voltage Cables: Reliable Energy Distribution

What are power cables and high-voltage cables?

High-voltage cables transport electrical energy with voltages from AC U0/U 0.6/1 kV safely from source to user. They are suited for distributing energy in buildings and industrial plants. As an energy cable manufacturer, HELUKABEL also offers underground, heavy-duty, three-phase power, and NYY versions of these cables (NYY: Standardised cable acc. to VDE (N), PVC core insulation (Y), PVC outer sheath(Y)).

What we have to offer—At a glance

  • Robust, versatile underground cables: Our moisture-resistant cables are suited for installation in the open, as well as above and underground.
  • Halogen-free designs for maximum safety: When ignited, no toxic gases or corrosive vapours are produced, protecting people and sensitive electronics.
  • Screened variants reduce interference: Electromagnetic compatibility ensures reliable operation even in industrial environments with many sources of interference.
  • Standardised quality: VDE-compliant production and comprehensive, technical consultations.
  • Flexible availability by the meter: Order the exact length you need and avoid waste and the need to store cable drums.
NYY-J Power cable
The NYY-J cable is a PVC-insulated and PVC-sheathed, high-voltage cable with green-yellow protective conductor. It is suited for installation underground or in the open.

Design and construction of high-voltage cables

A typical high-voltage cable consists of multiple components. The copper or aluminium conductor carries electricity while a layer of insulation (PVC or XLPE: cross-linked polyethylene) separates the conductors from one another. Screened designs feature a metal screen that surrounds the insulated cores. A robust PVC or PE sheath forms the outer protection.

HELUKABEL produces single-core and multi-core, high-voltage cables. Single-core variations are especially well suited for large cross-sections, while multi-cores are for compact installations. High-voltage cables can, depending on the standard (see cable data sheet), be installed underground without issue, as they exhibit an appropriate resistance to moisture, also making them suited for installation in the open.

Applications for power cables: From industry to buildings

Industrial operations use our high-voltage cables for powering machines, systems technology, and production lines. In buildings, these power cables transmit electricity from junction boxes to sub-distributors or directly to large consumers like elevators and air conditioning systems. Electricians often install high-voltage power lines underground for outdoor lighting, powering workshops, or to connect auxiliary buildings. These cables are available by the metre so you can get exactly the length you need.

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Different from installation cables

High-voltage cables differ significantly from conventional installation cables. They carry higher voltage, have larger cross-sections, and more robust insulation. While installation cables are primarily used in buildings, power cables are suited for demanding environments and underground installations.

Standards and cross-sections of power cables and high-voltage cables

HELUKABEL produces all of its high-voltage cables according to applicable VDE standards, in particular DIN VDE 0276-603 for high-voltage cables and power distribution cables with a nominal voltage of 0.6/1 kV. The cross-sections span from 1.5 mm² to many hundred mm², depending on the application and power load.

Medium-voltage cables for 6/10 kV to 18/30 kV complement our portfolio of higher voltage levels. Network operators and industrial companies use these cables for higher-level energy distribution.

FAQ

Our halogen-free underground cables comply with, for instance, flame retardancy standards according to DIN VDE 0266 (please see the data sheet for each specific cable). In the case of fire, they release only minimal amounts of smoke gas and no corrosive vapours, which is important for protection people in buildings.

Yes, our high-voltage cables are suited for installation in moist soils and even under water. The relevant labelling can be found in our product data sheets.

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