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Product

flexible elastomer wind turbine torsion cable UL 2277 WTTC / IEC 60502-10.6/1 kV / 1,000 V (-40 to +90 °C)Cold & Oil-Resistant Elastomer Jacke

IEC 0.6/1 kV & UL 2277 Type WTTC 1,000 V Copper-Braid Shielded Wind Turbine Torsion CableUL 2277 WTTC / IEC 60502-1 — 0.6/1 kV / 1,000 V — -40 to +90 °C Wind Turbine Cable

IEC 0.6/1 kV & UL 2277 Type WTTC 1,000 V Copper-Braid Shielded Wind Turbine Torsion Cable (UL 2277 WTTC / IEC 60502-1) engineered for 0.6/1 kV / 1,000 V wind turbine service across -40 to +90 °C (min. bend radius 6 × OD).

Anti-torsion braid

EMC screen

Oil-resistant

Approved

Configuration

Order designation: IEC 0.6 4G16 / 3×16+3G2.5
Outer Ø ≈: 21.8 mm
Net weight ≈: 790 kg/km
Max. pulling ≈: 9.5 kN
Core / stranding: IEC 60228 Class 5 / Class K Cu

All sizes (3)

Request a quote Datasheet WhatsApp info@tebaoflex.com

Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum

Rated voltage: 0.6/1 kV / 1,000
Operating temp.: −40…+90 °C
Min. bend radius: 6 × OD
Core / conductor: IEC 60228 Class
Outer protection: Cold & Oil-Resis
Standard: UL 2277 WTTC / I

Typical values for this cable type, based on UL Subject 2277 Type WTTC 1,000 V & IEC 60502-1 0.6/1 kV Shielded Wind Specification — confirmed in the datasheet and quotation for your order.

Application fit

Is IEC 0.6/1 kV & UL WTTC 1000V Shielded right for your machine?

Free-hanging vertical run

Suitable

Class 5 flexible copper cores and cross-linked EPR / silicone / PCP rubber jackets survive >10,000–18,000 yaw drip-loop torsion cycles.

Fixed installation

Suitable

Routes continuously from nacelle generators and yaw/pitch cabinets through the free-hanging drip loop into upper tower trays.

Offshore platform & shipboard deck trays

Suitable

Polychloroprene (CR/PCP), CPE, silicone (FDGG) and PUR (FDGU) sheaths resist hydraulic oil, grease, ozone, salt spray and −40 to −55 °C co

VFD inverter to AC motor screened feeder

Suitable

Copper-braid screened variants (FDEFP, FDEHP, WINDLINK WTTC) contain PWM converter electromagnetic interference along the drip loop.

Festoon & line chain

Not suitable

Wind turbine vertical torsion rubber cable is optimized for axial twist rather than high-speed trolley festoons.

Use (N)3GRDC5G-J/O Festoon Cable

Typical machinesRenewable Energy & EV ChargingOnshore & Offshore Wind Turbine Yaw Drip LoopsUltra-Cold (−55 °C) Arctic & High-Altitude Wind FarmsGB/T 29631 & NB/T 31034 Utility Wind GeneratorsNacelle Auxiliary Power, Yaw & Pitch Motor Circuits

Construction

Layer by layer

Shown: IEC 0.6/1 kV & UL WTTC 1000V Shielded (UL Subject 2277 Type WTTC 1,000 V & IEC 60502-1 0.6/1 kV Shielded Wind Specification) featuring iec 60228 class 5 flexible copper (4g10 mm²), epr dual-standard core insulation and cold & oil-resistant elastomer jacket (-40 °c) (4-layer construction).

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	IEC 60228 Class 5 Flexible Copper (4G10	Four flexible plain copper cores (3 phases + 1 green/yellow PE)
2	EPR Dual-Standard Core Insulation	Ethylene-propylene rubber rated 0.6/1 kV IEC and 1,000 V UL WTTC
3	Copper Wire Braid EMC Shield	Braided copper wire screen suppressing auxiliary VFD interference
4	Cold & Oil-Resistant Elastomer Jacket (-	Black flame-retardant thermoset elastomer outer sheath

IEC 0.6/1 kV & UL WTTC 1000V Shielded — Standard Wind Turbine Execution

Built to UL Subject 2277 Type WTTC 1,000 V & IEC 60502-1 0.6/1 kV Shielded Wind Specification with iec 60228 class 5 flexible copper (4g10 mm²) and cold & oil-resistant elastomer jacket (-40 °c)

IEC 0.6/1 kV & UL WTTC 1000V Shielded — Pre-Cut Tower / Drip-Loop Kit

Available on bulk export reels or pre-cut to turbine tower section and nacelle drip-loop lengths

IEC 0.6/1 kV & UL WTTC 1000V Shielded — Cold Torsion & Routine Certified

Supplied with EN 10204 3.1 routine dielectric, conductor DC resistance & cold-torsion qualification report

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on UL Subject 2277 Type WTTC 1,000 V & IEC 60502-1 0.6/1 kV Shielded Wind Specification. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage / operating system: 0.6/1 kV / 1,000 V (UL Subject 2277 Type WTTC 1,000 V & IEC 60502-1 0.6/1 kV Shielded Wind Specification)
Core / conductor construction: IEC 60228 Class 5 Flexible Copper (4G10 mm²) — Four flexible plain copper cores (3 phases + 1 green/yellow PE)
Primary dielectric / insulation: EPR Dual-Standard Core Insulation — Ethylene-propylene rubber rated 0.6/1 kV IEC and 1,000 V UL WTTC

Thermal

Continuous operating temperature: −40…+90 °C (wind turbine nacelle, hub & tower duty)
Low-temperature torsion & cold bend: Verified cold-flex and torsion endurance across −40…+90 °C per UL Subject 2277 Type WTTC 1,000 V & IEC 60502-1 0.6/1 kV Shielded Wind Specification
Storage & transport temperature: −40…+80 °C on export wooden/steel cable drum

Mechanical

Outer jacket / sheath protection: Cold & Oil-Resistant Elastomer Jacket (-40 °C) — Black flame-retardant thermoset elastomer outer sheath
Minimum bending radius: 6 × OD
Intermediate screen / separator / core layer: Copper Wire Braid EMC Shield — Braided copper wire screen suppressing auxiliary VFD interference

Resistance

Oil, grease, ozone & UV resistance: Resistant to wind turbine gearbox oil, hydraulic fluid, ozone and UV weathering per UL Subject 2277 Type WTTC 1,000 V & IEC 60502-1 0.6/1 kV Shielded Wind Specification
Flame retardancy & smoke/halogen emission: Flame-retardant and environmental performance verified per UL Subject 2277 Type WTTC 1,000 V & IEC 60502-1 0.6/1 kV Shielded Wind Specification
RoHS & REACH compliance: RoHS 2 (2011/65/EU + 2015/863) & REACH SVHC compliant

Reference standards

Governing standard: UL Subject 2277 Type WTTC 1,000 V & IEC 60502-1 0.6/1 kV Shielded Wind Specification
Conductor & flame/test standards: IEC 60228 / IEC 60332-1-2 & -3 / UL 2277 WTTC / EN 10204
Quality management & inspection: ISO 9001:2015 & EN 10204 3.1 factory routine inspection

Identification

Model designation: IEC 0.6/1 kV & UL WTTC 1000V Shielded
Sheath colour & metre marking: Continuous metre-marked black outer finish (Cold & Oil-Resis)
Customs tariff (HS): 8544.49 / 8544.60

Sizes

3 standard IEC 0.6/1 kV & UL WTTC 1000V Shielded wind turbine configurations

Manufactured to UL Subject 2277 Type WTTC 1,000 V & IEC 60502-1 0.6/1 kV Shielded Wind Specification for wind turbine yaw drip-loop, pitch control, tower power and converter applications.

Dimensions, tensile load & weights
Order designation	Configuration	Core / stranding	Outer Ø ≈ mm	Net weight ≈ kg/km	Max. pulling kN ≈	Min. bend R mm
IEC 0.6/1 kV & UL WTTC 1000V Shielded Construction Schedule (−40…+90 °C)
IEC 0.6 4G16 / 3×16+3G2.5	4G16 mm² (or 3×6 AWG + 3G10 AWG)	IEC 60228 Class 5 / Class K Cu	21.8	790	9.5	130
IEC 0.6 4G50 / 3×50+3G10	4G50 mm² (or 3×1 AWG + 3G6 AWG)	IEC 60228 Class 5 / Class K Cu	31.4	2,140	22.5	190
IEC 0.6 3×150+3G25 VFD	3×150 + 3G25 mm² (or 3×350 kcmil)	IEC 60228 Class 5 / Class K Cu	47.2	5,480	58.0	285

Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
Custom conductor cross-sections, core counts, pre-lugged tower kits and drum lengths available per UL Subject 2277 Type WTTC 1,000 V & IEC 60502-1 0.6/1 kV Shielded Wind Specification.

Electrical & thermal parameters
Configuration	Max. DC R₂₀ Ω/km	Rating / Impedance	Operating temp.
4G16 mm² (or 3×6 AWG + 3G10 AWG)	1.15	0.6/1 kV / 1,000 V (98 A VFD)	−40…+90 °C
4G50 mm² (or 3×1 AWG + 3G6 AWG)	0.39	0.6/1 kV / 1,000 V (195 A VFD)	−40…+90 °C
3×150 + 3G25 mm² (or 3×350 kcmil)	0.13	0.6/1 kV / 1,000 V (395 A VFD)	−40…+90 °C

Every production length undergoes routine conductor DC resistance, AC high-voltage spark/dielectric and dimensional verification.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

ConductorClass 5 stranding
Spark test100 % in-line
Lay-upCores, earth, fillers
SheathingInner, braid / screen, outer
Electrical testsAC voltage, resistance
DimensionsOD, wall thickness
Inspection documents & dispatchDrum & dispatch

Testing & inspection	Test value / reference	Frequency
Routine tests
Conductor DC resistance & dimensional verification (UL Subject 2277 Type WTTC 1,000 V & IEC 60502-1 0.6/1 kV Shielded Wind Specification)	DC resistance at 20 °C and insulation/sheath wall thickness within UL Subject 2277 Type WTTC 1,000 V & IEC 60502-1 0.6/1 kV Shielded Wind Specification limits	Every manufactured drum length
AC high-voltage dielectric & insulation resistance test (UL Subject 2277 Type WTTC 1,000 V & IEC 60502-1 0.6/1 kV Shielded Wind Specification)	Zero dielectric breakdown and verified insulation resistance for 0.6/1 kV / 1,000 V rating	Every manufactured drum length
Sample tests
Low-temperature drip-loop torsion, oil & flame qualification (UL Subject 2277 Type WTTC 1,000 V & IEC 60502-1 0.6/1 kV Shielded Wind Specification)	Verified cold torsion cycle endurance, oil resistance and flame retardancy across −40…+90 °C	Type qualification & periodic lot audit

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

UL 2277 WTTC / IEC 60502-1 CompliantEN 10204 3.1 Factory Test CertificateCE, RoHS 2 (2011/65/EU) & REACH

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX IEC 0.6/1 kV & UL WTTC 1000V Shielded UL 2277 WTTC / IEC 60502-1 0.6/1 kV / 1,000 V CE

Delivery form: Heavy-duty export fumigated wooden drums, steel reels or pre-cut wind turbine tower & drip-loop kits
Standard lengths: 500 m, 1,000 m or custom cut-to-length nacelle drip-loop and tower section sets
MOQ: 100 m (standard configurations) · 300 m (custom wind builds)
Lead time: 2–4 weeks ex-works
Incoterms: EXW, FCA, FOB, CIF, DAP

Technical documents

Downloads

PDFIEC 0.6/1 kV & UL 2277 Type WTTC 1,000 V Copper-Braid Shielded Wind Turbine Torsion Cable – technical datasheet3 configurations · 4-layer construction, technical data, approvals XLSXIEC 0.6/1 kV & UL WTTC 1000V Shielded spec data (Excel)All 3 configurations with dimensions and ratings, for your BOM or quotation

Revision: 2026-10-27
Updated: 2026-10-27

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

What governing standard and construction define IEC 0.6/1 kV & UL WTTC 1000V Shielded (IEC 0.6/1 kV & UL 2277 Type WTTC 1,000 V Copper-Braid Shielded Wind Turbine Torsion Cable)?

IEC 0.6/1 kV & UL WTTC 1000V Shielded (IEC 0.6/1 kV & UL 2277 Type WTTC 1,000 V Copper-Braid Shielded Wind Turbine Torsion Cable) is manufactured in accordance with UL Subject 2277 Type WTTC 1,000 V & IEC 60502-1 0.6/1 kV Shielded Wind Specification for 0.6/1 kV / 1,000 V wind turbine service over -40 to +90 °C. Its 4-layer construction comprises iec 60228 class 5 flexible copper (4g10 mm²), epr dual-standard core insulation and cold & oil-resistant elastomer jacket (-40 °c).

What is the minimum bending radius and operating temperature range for IEC 0.6/1 kV & UL WTTC 1000V Shielded?

The minimum bending radius for IEC 0.6/1 kV & UL WTTC 1000V Shielded is 6 × OD across its continuous operating temperature range of -40 to +90 °C, ensuring mechanical torsion resistance and dielectric reliability in wind turbine nacelles, hubs and towers.

How are the concentric layers of IEC 0.6/1 kV & UL WTTC 1000V Shielded arranged from inside to outside?

From inside to outside, the construction sequence is: (01) IEC 60228 Class 5 Flexible Copper (4G10 mm²) — Four flexible plain copper cores (3 phases + 1 green/yellow PE); (02) EPR Dual-Standard Core Insulation — Ethylene-propylene rubber rated 0.6/1 kV IEC and 1,000 V UL WTTC; (03) Copper Wire Braid EMC Shield — Braided copper wire screen suppressing auxiliary VFD interference; (04) Cold & Oil-Resistant Elastomer Jacket (-40 °C) — Black flame-retardant thermoset elastomer outer sheath.

What factory test certificates are supplied with IEC 0.6/1 kV & UL WTTC 1000V Shielded?

Every production drum of IEC 0.6/1 kV & UL WTTC 1000V Shielded undergoes routine conductor DC resistance, AC high-voltage dielectric and dimensional testing per UL Subject 2277 Type WTTC 1,000 V & IEC 60502-1 0.6/1 kV Shielded Wind Specification, and is delivered with an EN 10204 3.1 factory test certificate.

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01Selected sizes

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02Reel & motion

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03Message for our engineers

IEC 0.6/1 kV & UL WTTC 1000V Shielded IEC 0.6/1 kV & UL 2277 Type WTTC 1,000 V Copper-Braid Shielded Wind Turbine Torsion Cable

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