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Product

wind turbine tower, DLO & blade grounding power cable IEC 60502-1 / UL 2277 WTTC1.8/3 (3.6) kV / WTTC (-40 to +90 °CLSOH Low-Smoke Zero-Halogen Outer Sh

Global Dual-Standard 1.8/3 (3.6) kV (IEC) & UL WTTC Compacted Al / Class 5 Cu HEPR EMC-Screened LSOH Wind Tower CableIEC 60502-1 / UL 2277 WTTC — 1.8/3 (3.6) kV / WTTC — -40 to +90 °C Wind Turbine Cable

Global Dual-Standard 1.8/3 (3.6) kV (IEC) & UL WTTC Compacted Al / Class 5 Cu HEPR EMC-Screened LSOH Wind Tower Cable (IEC 60502-1 / UL 2277 WTTC, 1.8/3 (3.6) kV / WTTC, -40 to +90 °C, min. bend radius 8 × OD).

Anti-torsion braid

EMC screen

Oil-resistant

Approved

Configuration

Order designation: 1.8/3 kV & UL WTTC Cu/ 1×150 / 4×95 Al
Outer Ø ≈: 23.5 mm
Net weight ≈: 640 kg/km
Max. pulling ≈: 10.5 kN
Core / stranding: Class 2 Compacted Al / Class 5 AA8000

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: 1.8/3 (3.6) kV /
Operating temp.: −40…+90 °C
Min. bend radius: 8 × OD
Core / conductor: Class 2 Compacte
Outer protection: LSOH Low-Smoke Z
Standard: IEC 60502-1 / UL

Typical values for this cable type, based on IEC 60502-1 (1.8/3 kV) & UL 2277 WTTC EMC-Screened HEPR/LSOH Wind Tower Specification — confirmed in the datasheet and quotation for your order.

Application fit

Is 1.8/3 kV & UL WTTC Cu/Al EMC Tower right for your machine?

Fixed installation

Suitable

Compacted Class 2 aluminum or Class 5/K copper conductors with XLPE/EPR/HEPR insulation install cleanly in vertical tower cleats and trays

Free-hanging vertical run

Suitable

Flexible DLO 2 kV, WTTC 1 kV and blade grounding builds absorb nacelle yaw loop torsion and rotor blade flexing down to −40 °C.

Switchgear & control cabinet wiring

Suitable

NSGAFOU 1.8/3 kV short-circuit-proof and UL WTTC/RHW-2 feeders wire directly into nacelle converter cabinets and tower base switchgear.

Offshore platform & shipboard deck trays

Suitable

Heavy-duty CPE, HM4/HFFR LSZH and 5GM3 polychloroprene jackets resist turbine hydraulic oil, condensation, salt spray and UV.

Energy chain / drag chain

Not suitable

Wind tower power feeders and large-cross-section DLO cables are not intended for high-cycle factory drag chains.

Use Drag-Chain Servo Cable

Typical machinesRenewable Energy & EV ChargingWind Turbine Tower Vertical Power Feeders (Cu & Al)North American UL 2277 WTTC & 2 kV DLO Wind TurbinesIEC 61400-24 Wind Blade Lightning Down-ConductorsNacelle Converter Busbars & Transformer Interconnects

Construction

Layer by layer

Shown: 1.8/3 kV & UL WTTC Cu/Al EMC Tower (IEC 60502-1 (1.8/3 kV) & UL 2277 WTTC EMC-Screened HEPR/LSOH Wind Tower Specification) featuring class 2 compacted aluminum / class 5 copper, 1.8/3 (3.6) kv high-modulus hepr insulation and lsoh low-smoke zero-halogen outer sheath (4-layer construction).

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	Class 2 Compacted Aluminum / Class 5 Cop	50-630 mm² conductor engineered for vertical tower cleat fixing
2	1.8/3 (3.6) kV High-Modulus HEPR Insulat	Thermoset HEPR dielectric certified to IEC and UL WTTC
3	Copper Tape / Wire EMC Screen	Metallic shield attenuating converter harmonic emissions in tower
4	LSOH Low-Smoke Zero-Halogen Outer Sheath	Flame-retardant halogen-free jacket for enclosed wind towers

1.8/3 kV & UL WTTC Cu/Al EMC Tower — Standard Wind Turbine Execution

Built to IEC 60502-1 (1.8/3 kV) & UL 2277 WTTC EMC-Screened HEPR/LSOH Wind Tower Specification with class 2 compacted aluminum / class 5 copper and lsoh low-smoke zero-halogen outer sheath

1.8/3 kV & UL WTTC Cu/Al EMC Tower — Pre-Cut Tower / Drip-Loop Kit

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

1.8/3 kV & UL WTTC Cu/Al EMC Tower — 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 IEC 60502-1 (1.8/3 kV) & UL 2277 WTTC EMC-Screened HEPR/LSOH Wind Tower Specification. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage / operating system: 1.8/3 (3.6) kV / WTTC (IEC 60502-1 (1.8/3 kV) & UL 2277 WTTC EMC-Screened HEPR/LSOH Wind Tower Specification)
Core / conductor construction: Class 2 Compacted Aluminum / Class 5 Copper — 50-630 mm² conductor engineered for vertical tower cleat fixing
Primary dielectric / insulation: 1.8/3 (3.6) kV High-Modulus HEPR Insulation — Thermoset HEPR dielectric certified to IEC and 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 IEC 60502-1 (1.8/3 kV) & UL 2277 WTTC EMC-Screened HEPR/LSOH Wind Tower Specification
Storage & transport temperature: −40…+80 °C on export wooden/steel cable drum

Mechanical

Outer jacket / sheath protection: LSOH Low-Smoke Zero-Halogen Outer Sheath — Flame-retardant halogen-free jacket for enclosed wind towers
Minimum bending radius: 8 × OD
Intermediate screen / separator / core layer: Copper Tape / Wire EMC Screen — Metallic shield attenuating converter harmonic emissions in tower

Resistance

Oil, grease, ozone & UV resistance: Resistant to wind turbine gearbox oil, hydraulic fluid, ozone and UV weathering per IEC 60502-1 (1.8/3 kV) & UL 2277 WTTC EMC-Screened HEPR/LSOH Wind Tower Specification
Flame retardancy & smoke/halogen emission: Flame-retardant and environmental performance verified per IEC 60502-1 (1.8/3 kV) & UL 2277 WTTC EMC-Screened HEPR/LSOH Wind Tower Specification
RoHS & REACH compliance: RoHS 2 (2011/65/EU + 2015/863) & REACH SVHC compliant

Reference standards

Governing standard: IEC 60502-1 (1.8/3 kV) & UL 2277 WTTC EMC-Screened HEPR/LSOH Wind Tower 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: 1.8/3 kV & UL WTTC Cu/Al EMC Tower
Sheath colour & metre marking: Continuous metre-marked black outer finish (LSOH Low-Smoke Z)
Customs tariff (HS): 8544.49 / 8544.60

Sizes

3 standard 1.8/3 kV & UL WTTC Cu/Al EMC Tower wind turbine configurations

Manufactured to IEC 60502-1 (1.8/3 kV) & UL 2277 WTTC EMC-Screened HEPR/LSOH Wind Tower 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
1.8/3 kV & UL WTTC Cu/Al EMC Tower Construction Schedule (−40…+90 °C)
1.8/3 kV & UL WTTC Cu/ 1×150 / 4×95 Al	1 × 150 mm² (or 4 × 95 mm² Al)	Class 2 Compacted Al / Class 5 AA8000	23.5	640	10.5	190
1.8/3 kV & UL WTTC Cu/ 1×240 / 4×150 Al	1 × 240 mm² (or 4 × 150 mm² Al)	Class 2 Compacted Al / Class 5 AA8000	28.4	980	16.8	230
1.8/3 kV & UL WTTC Cu/ 1×400 / 4×240 Al	1 × 400 mm² (or 4 × 240 mm² Al)	Class 2 Compacted Al / Class 5 AA8000	35.8	1,590	28.0	290

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 IEC 60502-1 (1.8/3 kV) & UL 2277 WTTC EMC-Screened HEPR/LSOH Wind Tower Specification.

Electrical & thermal parameters
Configuration	Max. DC R₂₀ Ω/km	Rating / Impedance	Operating temp.
1 × 150 mm² (or 4 × 95 mm² Al)	0.21	1.8/3 (3.6) kV / WTTC (315 A Al)	−40…+90 °C
1 × 240 mm² (or 4 × 150 mm² Al)	0.13	1.8/3 (3.6) kV / WTTC (435 A Al)	−40…+90 °C
1 × 400 mm² (or 4 × 240 mm² Al)	0.08	1.8/3 (3.6) kV / WTTC (590 A Al)	−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 (IEC 60502-1 (1.8/3 kV) & UL 2277 WTTC EMC-Screened HEPR/LSOH Wind Tower Specification)	DC resistance at 20 °C and insulation/sheath wall thickness within IEC 60502-1 (1.8/3 kV) & UL 2277 WTTC EMC-Screened HEPR/LSOH Wind Tower Specification limits	Every manufactured drum length
AC high-voltage dielectric & insulation resistance test (IEC 60502-1 (1.8/3 kV) & UL 2277 WTTC EMC-Screened HEPR/LSOH Wind Tower Specification)	Zero dielectric breakdown and verified insulation resistance for 1.8/3 (3.6) kV / WTTC rating	Every manufactured drum length
Sample tests
Low-temperature drip-loop torsion, oil & flame qualification (IEC 60502-1 (1.8/3 kV) & UL 2277 WTTC EMC-Screened HEPR/LSOH Wind Tower 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

IEC 60502-1 / UL 2277 WTTC 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 1.8/3 kV & UL WTTC Cu/Al EMC Tower IEC 60502-1 / UL 2277 WTTC 1.8/3 (3.6) kV / WTTC 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

PDFGlobal Dual-Standard 1.8/3 (3.6) kV (IEC) & UL WTTC Compacted Al / Class 5 Cu HEPR EMC-Screened LSOH Wind Tower Cable – technical datasheet3 configurations · 4-layer construction, technical data, approvals XLSX1.8/3 kV & UL WTTC Cu/Al EMC Tower 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 1.8/3 kV & UL WTTC Cu/Al EMC Tower (Global Dual-Standard 1.8/3 (3.6) kV (IEC) & UL WTTC Compacted Al / Class 5 Cu HEPR EMC-Screened LSOH Wind Tower Cable)?

1.8/3 kV & UL WTTC Cu/Al EMC Tower (Global Dual-Standard 1.8/3 (3.6) kV (IEC) & UL WTTC Compacted Al / Class 5 Cu HEPR EMC-Screened LSOH Wind Tower Cable) is manufactured in accordance with IEC 60502-1 (1.8/3 kV) & UL 2277 WTTC EMC-Screened HEPR/LSOH Wind Tower Specification for 1.8/3 (3.6) kV / WTTC wind turbine service over -40 to +90 °C. Its 4-layer construction comprises class 2 compacted aluminum / class 5 copper, 1.8/3 (3.6) kv high-modulus hepr insulation and lsoh low-smoke zero-halogen outer sheath.

What is the minimum bending radius and operating temperature range for 1.8/3 kV & UL WTTC Cu/Al EMC Tower?

The minimum bending radius for 1.8/3 kV & UL WTTC Cu/Al EMC Tower is 8 × 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 1.8/3 kV & UL WTTC Cu/Al EMC Tower arranged from inside to outside?

From inside to outside, the construction sequence is: (01) Class 2 Compacted Aluminum / Class 5 Copper — 50-630 mm² conductor engineered for vertical tower cleat fixing; (02) 1.8/3 (3.6) kV High-Modulus HEPR Insulation — Thermoset HEPR dielectric certified to IEC and UL WTTC; (03) Copper Tape / Wire EMC Screen — Metallic shield attenuating converter harmonic emissions in tower; (04) LSOH Low-Smoke Zero-Halogen Outer Sheath — Flame-retardant halogen-free jacket for enclosed wind towers.

What factory test certificates are supplied with 1.8/3 kV & UL WTTC Cu/Al EMC Tower?

Every production drum of 1.8/3 kV & UL WTTC Cu/Al EMC Tower undergoes routine conductor DC resistance, AC high-voltage dielectric and dimensional testing per IEC 60502-1 (1.8/3 kV) & UL 2277 WTTC EMC-Screened HEPR/LSOH Wind Tower 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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Reel typeDrum core diameter (mm)Cable length on drum (m)Travel speed (m/min)Max. accelerationCycles per hourLength and quantityAmbient temperatureExposure (outdoor, water, oil, abrasion)Destination countryEquipment and operating conditions

03Message for our engineers

1.8/3 kV & UL WTTC Cu/Al EMC Tower Global Dual-Standard 1.8/3 (3.6) kV (IEC) & UL WTTC Compacted Al / Class 5 Cu HEPR EMC-Screened LSOH Wind Tower Cable

Selected sizes:


Reel & motion:
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- Travel speed (m/min): 
- Max. acceleration: 
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