Windflex Cables for Wind Turbines & Torsion Applications | Prysmian

We are UK based suppliers for the full range of Prysmian Windflex Cables – engineered specifically for wind turbine applications that demand exceptional performance under mechanical and torsional stress, vibration, and thermal cycling. Designed to operate in harsh environments, these flexible rubber cables provide long-term reliability in tower and nacelle installations.

Available in both standard and halogen-free cable constructions, these renewable energy MV cables include four subordinate cable types, offering maximum operating voltages from 0.6kV up to 35kV. Approved by UL, DIN, HD, and IEC power cable standard compliances, Prysmian Windflex ensures simplified global compliance and installation.

The Windflex range is trusted globally for its:

Torsion resistance: tested to 5000 cycles at -40°C simulating 20 years of twisting inside wind towers
Temperature durability: operational from -40°C to +90°C, with versions up to +120°C
Flexible construction: Class 5 fine-stranded copper conductors for high flexibility
Oil, ozone, and UV resistance: for prolonged life in exposed environments

We supply the complete Prysmian Windflex Cable range, including:

Windflex Global 0.6/1kV – standard rubber cable for torsion and tower installation
Windflex Global 0.6/1kV LSOH – halogen-free version for enhanced fire safety
Windflex EMC 0.6/1kV LSOH – screened cable for electromagnetic compatibility
Windflex MV Power 6–35kV – medium voltage cable for wind turbine power circuits

Click one of the cable types above or continue reading to view the full Windflex range.

Prysmian Windflex Global 0.6kV to 1kV

The Prysmian Windflex Global Cable 0.6/1kV is a flexible rubber power cable designed for wind turbine/wind power installations exposed to medium mechanical stress and torsional movement. Ideal for use in nacelles and towers, it supports dynamic applications in onshore and offshore wind farms, offering durable performance in extreme temperatures and resistance to harsh environmental impact

Key Features & Benefits of Windflex Global Cable 0.6/1kV

UL & VDE Compliant: Built to meet cUL Style 4537 and AWM UL 758 standards, with design in line with DIN VDE 0250, ensuring compatibility across global wind turbine platforms.
Highly Flexible Copper Conductors: Fine stranded Class 5 plain copper conductor (IEC 60228) delivers excellent flexibility and ease of installation in tight wind turbine compartments.
Durable Rubber Insulation: Class 28 UL / Type 3GI3 rubber insulation offers thermal stability and resistance to ageing in high-vibration environments.
Reinforced Inner Sheath: Manufactured with GM1b rubber compound (VDE 0207-21) for additional internal mechanical protection.
Robust Outer Sheath: 5GM3 rubber compound (cUL Style 4537) offers excellent oil, UV, and abrasion resistance, extending service life in exposed turbine locations.
Torsion-Optimised Design: Suitable for bending radii as low as 6×D when mobile and 4×D when fixed, ideal for cable loops in turbine towers.
Wide Operating Temperature Range: Functions reliably from -40°C up to +90°C, making it suitable for extreme climate conditions found in wind energy installations.

Prysmian Windflex Global Cable – 0.6/1kV Technical Dimensions
Cores × Cross-Section (mm²)	Cable Diameter (mm)	Weight (kg/km)
1 × 120	22.5 – 25.5	1460
1 × 240	30.0 – 33.0	2760
3 × 70	39.5 – 43.5	3420
3 × 240	68.0 – 74.0	10600

Prysmian Windflex Global Cable – Technical Specifications
Nominal Voltage	0.6/1 kV
Max. Conductor Temperature	+90 °C
Short Circuit Temperature	+250 °C
Design Standards	HD 22, UL
Fire Performance	IEC 60332-1-1/2
Oil Resistance	IEC 60811-2-1
Ozone Resistance	IEC 60811-2-1
UV Resistant	Yes

Prysmian Windflex Global 0.6kV to 1kV LSOH

The Prysmian Windflex Global Cable 0.6/1kV LSOH is a halogen-free, flexible rubber cable designed for demanding wind energy applications, including areas subject to torsion, vibration, and medium mechanical load. Its low smoke, zero halogen (LSOH) design makes it particularly suited for safety-critical environments such as enclosed turbine housings, nacelles, and confined tower spaces in both onshore and offshore wind farms.

Key Features & Benefits of Windflex Global Cable 0.6/1kV LSOH

Low Smoke Zero Halogen (LSOH): construction enhances fire safety and reduces toxic emissions in confined turbine environments.
Compliant with cUL Style 21465: and VDE 0282-13 for international wind energy standards and safety.
Flexible Class 5 Copper Conductors: (IEC 60228) allow for ease of installation in tight and torsion-prone wind turbine layouts.
Durable Rubber Insulation & Inner Sheath: provide long-term resistance to wear, movement, and environmental exposure.
HXM1 Outer Sheath: is halogen-free and abrasion-resistant, offering superior performance in harsh, oil-prone areas.
Temperature & Movement Ready: Operates from -40°C to +90°C, with bending radii of 6×D (mobile) and 4×D (fixed), ideal for dynamic wind turbine installations.

Prysmian Windflex Global Cable – 0.6/1kV LSOH Technical Dimensions
Cores × Cross-Section (mm²)	Cable Diameter (mm)	Weight (kg/km)
1 × 120	22.5 – 25.5	1490
1 × 240	30.0 – 33.0	2800
3 × 70	39.5 – 43.5	3470
3 × 240	68.0 – 74.0	10700

Prysmian Windflex Global Cable LSOH – Technical Specifications
Nominal Voltage	0.6/1 kV
Max. Conductor Temperature	+90 °C
Short Circuit Temperature	+250 °C
Design Standards	DIN 0250/0280, UL
Fire Performance	IEC 60332-1-1/2
Smoke Density	IEC 61034-2
Corrosive Gases	IEC / DIN EN 50267-2
Oil Resistance	IEC 60811-2-1
Ozone Resistance	IEC 60811-2-1
UV Resistant	Yes

Prysmian Windflex EMC 0.6kV to 1kV LSOH

The Prysmian Windflex EMC Cable 0.6/1kV LSOH is a halogen-free, flexible EMC-shielded cable developed for wind turbine/wind power applications exposed to medium mechanical stress, where torsional movement is not present. With its electromagnetic shielding, it ensures reliable signal integrity and power transmission in sensitive control systems within nacelles, towers, or enclosed electrical assemblies, especially in onshore wind installations requiring enhanced EMC protection and fire safety.

Key Features & Benefits of Windflex EMC Cable 0.6/1kV LSOH

Electromagnetic shielding: Tinned copper braid with over 85% coverage ensures reliable EMC protection for power and control circuits.
LSOH construction: Low smoke, zero halogen materials reduce toxic emissions and support safety in enclosed turbine environments.
Flexible copper conductor: Class 5 plain copper wires (IEC 60228) provide ease of installation in restricted or fixed spaces.
Durable insulation and sheath: Rubber insulation (3GI3) and GM1b inner sheath offer mechanical strength and thermal stability.
PETP separator film: Enhances internal structural integrity and screen performance under load.
Robust outer sheath: HXM1 rubber compound resists oil, abrasion, and environmental exposure; compliant with DIN VDE 0266.
Wide temperature range: Operates from -40°C to +90°C with tight bending radii of 6×D (moved) and 4×D (fixed).

Prysmian Windflex EMC Cable – 0.6/1kV LSOH Technical Dimensions
Cores × Cross-Section (mm²)	Cable Diameter (mm)	Weight (kg/km)
3 × 70/35	41 – 46	3850
3 × 150/50	55 – 60	7200

Prysmian Windflex EMC Cable LSOH – Technical Specifications
Nominal Voltage	0.6/1 kV
Max. Conductor Temperature	+90 °C
Short Circuit Temperature	+250 °C
Design Standards	DIN 0250, HD 22.4
Fire Performance	IEC 60332-1-1/2
Smoke Density	IEC 61034-2
Corrosive Gases	IEC / DIN EN 50267-2
Oil Resistance	IEC 60811-2-1
Ozone Resistance	IEC 60811-2-1
UV Resistant	Yes

Prysmian Windflex MV Power 6kV to 35kV

The Windflex MV Power 6 Cable 35 kV is a flexible medium voltage rubber-insulated cable developed for use in wind turbines subjected to medium mechanical stress and torsional loading. Suitable for both standard and halogen-free installations, it is designed for dynamic power transmission in nacelles, towers, and rotating cable loops of modern onshore and offshore wind energy systems.

Key Features & Benefits of Windflex MV Power Cable 6kV to 35kV

Flexible medium voltage design: Rated up to 35 kV, ideal for high-power wind turbine applications with movement and vibration.
Class 5 copper conductor: Fine-stranded copper (IEC 60228) enables flexibility and easy routing through complex cable paths.
Robust insulation options: Rubber compound (3GI3) or HEPR super-clean insulation meets IEC 60502-2 for long-term dielectric strength.
Reinforced inner sheath: GM1b rubber compound adds durability and protection against internal wear.
Versatile outer sheath: Available in standard 5GM3 or halogen-free HXM1 (DIN VDE 0266), supporting fire-safe and oil-resistant applications.
Bending radius: Designed for flexibility—10×D when moved and 6×D when fixed.
Wide temperature range: Operational from -40°C to +90°C, making it suitable for harsh environmental conditions in wind power systems.

Prysmian Windflex MV Power Cable 6/35 kV Technical Dimensions
Cores × Cross-Section (mm²)	Cable Diameter (mm)	Weight (kg/km)
3 × 25/25	59 – 65	5900
3 × 70/70	75 – 81	8950

Prysmian Windflex MV Power Cable – Technical Specifications
Nominal Voltage	3.6/6 kV, 8.7/15 kV, 12/20 kV, 20/35 kV
Max. Conductor Temperature	+90 °C
Short Circuit Temperature	+250 °C
Design Standards	DIN VDE 0250 Part 813
Fire Performance	IEC 60332-1-1/2
Oil Resistance	IEC 60811-2-1
Ozone Resistance	IEC 60811-2-1
UV Resistant	Yes

Windflex Cables FAQs

What is a Windflex cable?

A Windflex cable is a flexible, rubber-insulated power cable designed for use in wind turbines. Built to handle torsion, vibration, and harsh environments, it ensures long-term reliability. Windflex cables are available in standard, LSOH, and EMC-shielded types for low and medium voltage applications.

Is Windflex cable suitable for wind turbines?

Yes, Windflex cables are specifically designed for use in wind turbines. They are flexible, torsion-resistant, and rated for extreme temperatures from -40°C to +90°C. Their robust rubber construction makes them ideal for nacelle and tower installations in both onshore and offshore wind energy systems.

What standards do Windflex cables meet?

Windflex cables meet international standards including IEC, DIN VDE, HD 22, and UL approvals. Depending on the variant, they may comply with IEC 60332 for flame retardancy, IEC 60811 for oil and ozone resistance, and UL 758 for global use. These standards ensure performance in wind turbine environments.

Prysmian Group Partners

Thorne & Derrick are one of Prysmian Group’s largest stockists and suppliers, in both the UK and worldwide. Operating in over 50 countries, Prysmian designs and produces a wide range of power, control, instrumentation, and fibre optic cables for industrial, infrastructure, and renewable energy sectors. Their portfolio includes innovative solutions like Windflex cables, engineered for demanding wind turbine environments. Known for technical excellence, global standards compliance, and long-term reliability, Prysmian cables are trusted across offshore, onshore, and industrial applications.

Additionally, Thorne & Derrick hold large stocks of 11kV 33kV 66kV Joints, Terminations & Connectors suitable for XLPE, PILC and EPR cables, in both heat shrink and Cold Shrink technologies, to service the medium/high voltage power cable accessory requirements of UK and international customers.

Ready to place an order for our Windflex cabling, or need to know more? Contact our experts – we provide bespoke engineered solutions and specialist product knowledge, alongside competitive pricing, customer satisfaction and fast worldwide delivery.