Aluminium HEPR/PO LSZH 1kV Turbine Power Cable

What is Aluminium HEPR/PO LSZH 1kV Turbine Power Cable?

The Aluminium HEPR/PO LSZH 1kV Turbine Power Cable is a low-voltage (0.6/1kV) flexible power cable engineered in accordance with IEC 60502-1 and IEC 60228 for fixed down-tower electrical distribution in modern wind power installations. It is developed to replace heavier copper conductors, significantly lowering structural dead-weight on turbine tower internals while ensuring thermal and electrical reliability during fluctuating turbine load cycles.

Utilizing high-grade Class 2 stranded aluminium paired with hard ethylene propylene rubber (HEPR) insulation, the cable provides electrical performance combined with oil, ozone, and UV resistance. Its flame-retardant, halogen-free polyolefin (PO type HXM1) outer jacket conforms to IEC 60332-1, IEC 60754, and IEC 61034, ensuring that no corrosive acid gases are released and optical smoke remains minimal in the event of an electrical fault or thermal incident.

Aluminium HEPR/PO LSZH 1kV Turbine Power Cable Construction

• Conductor: Class 2 stranded circular plain aluminium conductor conforming to IEC 60228, delivering lightweight efficiency and electrical conductivity.
• Insulation: Hard Ethylene Propylene Rubber (HEPR) providing electrical insulation, dielectric strength, and thermal endurance up to +90°C.
• Inner Covering / Bedding: Extruded rubber compound inner covering enclosing the insulated core assembly.
• Screen / Armour: Unscreened, lightweight unarmoured design optimized for permanent routing within vertical cable trays, cleating networks, and enclosed tower conduit systems.
• Outer Sheath: Heavy-duty, flame-retardant polyolefin (PO) type HXM1 compound.
• Sheath Properties: Engineered for oil resistance, ozone resistance, and ultraviolet (UV) radiation resistance.
• Sheath Colour: Deep Black.

Applications

Aluminium HEPR/PO LSZH 1kV cables are designed for harsh operational environments in renewable power infrastructure:

• Wind Turbine Tower Down-Lead Routing: Permanent electrical power transmission installed vertically inside wind turbine steel and hybrid towers from generator or converter down to baseline step-up transformers.
• Nacelle Electrical Interconnections: Fixed internal auxiliary distribution runs requiring mechanical flexibility and a compact bending radius.
• Substation & Inverter Terminations: Low-voltage AC connections within wind farm substations, switchgear cubicles, and power conversion buildings.
• Harsh Industrial Installations: Industrial energy plants exposed to oils, ozone, moisture, and intense UV exposure requiring lightweight cabling.

Specifications & Dimensions

Huadong Cable Group manufactures Aluminium HEPR/PO LSZH 1kV turbine cables in single-core cross-sections ranging from 50mm² to 400mm², as well as multi-core configurations including 3-core 150mm² and 4-core 150mm². Operating at a rated voltage of 0.6/1kV (Uo/U) across a temperature range of -40°C to +90°C (maximum short-circuit conductor limit of +250°C), the single-core series exhibits nominal overall outer diameters from 13.0mm (1 × 50mm²) up to 32.5mm (1 × 400mm²) with nominal weights spanning 266 kg/100m to 1,680 kg/100m. The 3-core 150mm² version features an overall diameter of 44.0mm weighing 2,756 kg/100m, while the 4-core 150mm² version measures 49.0mm with a nominal weight of 3,367 kg/100m. The entire range allows a bending radius of 4 times the overall diameter, conforming to IEC 60502-1 dimensional and structural criteria.

Standards

Design & Material Standards: IEC 60502-1, IEC 60228
Flame Retardancy: IEC 60332-1 (Flame propagation on single vertical insulated cable)
Halogen-Free & Low Smoke: IEC 60754 (Low halogen acid gas emission), IEC 61034 (Low smoke density)
Environmental Resistance: Resistant to transformer/lubricating oils, ozone exposure, and UV radiation
Thermal & Electrical Ratings: Voltage Rating Uo/U: 0.6/1kV; Operating Temperature: -40°C to +90°C; Short-circuit Limit: +250°C; Minimum Bending Radius: 4 × OD
Regulatory Directives: Low Voltage Directive 2014/35/EU, RoHS Directive 2015/65/EU, REACH EC 1907/2006, CE Marked

Frequently Asked Questions

Q: Why is aluminium preferred over copper for permanent tower wiring in wind turbines?
A: Aluminium provides a weight-to-conductivity ratio that significantly reduces cumulative suspended dead-load on vertical cable ladders and support brackets throughout the height of the tower.

Q: What are the engineering advantages of Hard Ethylene Propylene Rubber (HEPR) insulation?
A: HEPR exhibits superior dielectric properties, mechanical toughness, and thermal overload resistance up to +90°C continuous and +250°C short-circuit, preventing insulation degradation inside turbine shafts.

Q: How does the PO type HXM1 outer sheath protect the cable against turbine environments?
A: The polyolefin (PO) type HXM1 sheath provides verified chemical resistance against cooling and lubricating oils, atmospheric ozone, and exterior UV radiation while maintaining zero-halogen low-smoke safety.

Q: What international payment terms does Huadong Cable accept for project orders?
A: We accept standard international commercial payment terms, primarily Telegraphic Transfer (T/T, with 30% advance deposit and 70% balance against shipping documentation) and 100% Irrevocable Letter of Credit (L/C) at sight.

Aluminium HEPR/PO LSZH 1kV – Why Choose Huadong Cable?

Huadong Cable Group manufactures Aluminium HEPR/PO LSZH 1kV turbine cables in accordance with IEC 60502-1 specifications. Utilizing high-grade electrical aluminium rod, our continuous wire drawing and compact stranding equipment produces uniform Class 2 conductors. Co-extrusion lines apply hard ethylene propylene rubber (HEPR) insulation and rubber bedding compound under laser diameter gauges, ensuring concentricity and dielectric integrity across continuous drum lengths.

With more than 20 years of precision cable manufacturing experience, Huadong Cable Group operates testing facilities certified to ISO 9001, CE, RoHS, and REACH protocols. Supplying directly from our manufacturing base eliminates trading intermediary markups, allowing us to offer competitive factory pricing, 100% routine Mill Test Certificates (MTC) tested in accredited testing facilities, project-tailored drum cuts on ISPM 15 heat-treated export wooden reels, and dependable logistics for wind turbine OEMs and clean energy engineering contractors worldwide.