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Product

wind turbine drip-loop, tray & pitch control cable UL 2277 WTTC / UL 1277 TC-ER1,000 V WTTC / 600 V TC-ER (-40 to +-40 °C Oil-Resistant Thermoplastic J

CONTROL TM/CY UL Type WTTC 1,000 V / TC-ER 600 V Foil + 85% TCWB Dual-Shielded Torsion Control CableUL 2277 WTTC / UL 1277 TC-ER — 1,000 V WTTC / 600 V TC-ER — -40 to +90 °C Wind Turbine Cable

CONTROL TM/CY UL Type WTTC 1,000 V / TC-ER 600 V Foil + 85% TCWB Dual-Shielded Torsion Control Cable (UL 2277 WTTC / UL 1277 TC-ER) engineered for 1,000 V WTTC / 600 V TC-ER wind turbine service across -40 to +90 °C (min. bend radius 6 × OD).

Anti-torsion braid

EMC screen

Oil-resistant

Approved

Configuration

Order designation: CONTROL TM 7G1.5 mm²
Outer Ø ≈: 11.4 mm
Net weight ≈: 215 kg/km
Max. pulling ≈: 2.4 kN
Core / stranding: IEC 60228 Class 5/6 / 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: 1,000 V WTTC / 6
Operating temp.: −40…+90 °C
Min. bend radius: 6 × OD
Core / conductor: Class 5 Flexible
Outer protection: -40 °C Oil-Resis
Standard: UL 2277 WTTC / U

Typical values for this cable type, based on UL Subject 2277 WTTC 1,000 V, UL 1277 TC-ER 600 V & CSA AWM Dual-Shielded Specification — confirmed in the datasheet and quotation for your order.

Application fit

Is CONTROL TM/CY UL WTTC 1000V right for your machine?

Free-hanging vertical run

Suitable

Class 5, Class 6 and Class K extra-flexible copper cores withstand continuous ±150°/m drip-loop and ±450°/0.5m pitch torsion down to −40/−

Fixed installation

Suitable

UL 2277 WTTC 1,000 V / UL 1277 TC-ER 600 V and IEC 0.6/1 kV ratings allow open tray and Exposed Run routing across the nacelle and tower.

Switchgear & control cabinet wiring

Suitable

Number-coded cores and 85% tinned copper braid / foil+braid shields terminate neatly into pitch servo boxes, slip-rings and PLC cabinets.

Energy chain / drag chain

Suitable

PUR-sheathed Class 6 pitch & slip-ring cables (RT 113/123, RT 114/116) handle combined rotary hub motion and bending.

Vertical / spreader reel

Not suitable

Wind turbine control and tray cable is not engineered for deepwater vertical oceanographic lift winches.

Use A304739 BOP MUX Umbilical

Typical machinesRenewable Energy & EV ChargingWind Turbine Rotor Hub Pitch Control & Slip-RingsNacelle-to-Tower Multi-Core Drip-Loop Control BundlesUL 2277 WTTC / TC-ER Nacelle & Tower Cable TraysBlade De-Icing, Trace Heating & Aviation Obstruction Lights

Construction

Layer by layer

Shown: CONTROL TM/CY UL WTTC 1000V (UL Subject 2277 WTTC 1,000 V, UL 1277 TC-ER 600 V & CSA AWM Dual-Shielded Specification) featuring class 5 flexible bare copper (2-50 cores), pvc / nylon composite core insulation and -40 °c oil-resistant thermoplastic jacket (4-layer construction).

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	Class 5 Flexible Bare Copper (2-50 Cores	Stranded plain copper conductors (18 AWG to 2 AWG)
2	PVC / Nylon Composite Core Insulation	UL WTTC 1,000 V & TC-ER 600 V numbered core insulation
3	Al/PET Foil + 85% Tinned Copper Braid (C	Dual electromagnetic shielding for nacelle & tower tray circuits
4	-40 °C Oil-Resistant Thermoplastic Jacke	UL WTTE wind turbine torsion-tested outer sheath

CONTROL TM/CY UL WTTC 1000V — Standard Wind Turbine Execution

Built to UL Subject 2277 WTTC 1,000 V, UL 1277 TC-ER 600 V & CSA AWM Dual-Shielded Specification with class 5 flexible bare copper (2-50 cores) and -40 °c oil-resistant thermoplastic jacket

CONTROL TM/CY UL WTTC 1000V — Pre-Cut Tower / Drip-Loop Kit

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

CONTROL TM/CY UL WTTC 1000V — 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 WTTC 1,000 V, UL 1277 TC-ER 600 V & CSA AWM Dual-Shielded Specification. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage / operating system: 1,000 V WTTC / 600 V TC-ER (UL Subject 2277 WTTC 1,000 V, UL 1277 TC-ER 600 V & CSA AWM Dual-Shielded Specification)
Core / conductor construction: Class 5 Flexible Bare Copper (2-50 Cores) — Stranded plain copper conductors (18 AWG to 2 AWG)
Primary dielectric / insulation: PVC / Nylon Composite Core Insulation — UL WTTC 1,000 V & TC-ER 600 V numbered core insulation

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 WTTC 1,000 V, UL 1277 TC-ER 600 V & CSA AWM Dual-Shielded Specification
Storage & transport temperature: −40…+80 °C on export wooden/steel cable drum

Mechanical

Outer jacket / sheath protection: -40 °C Oil-Resistant Thermoplastic Jacket — UL WTTE wind turbine torsion-tested outer sheath
Minimum bending radius: 6 × OD
Intermediate screen / separator / core layer: Al/PET Foil + 85% Tinned Copper Braid (CY) — Dual electromagnetic shielding for nacelle & tower tray circuits

Resistance

Oil, grease, ozone & UV resistance: Resistant to wind turbine gearbox oil, hydraulic fluid, ozone and UV weathering per UL Subject 2277 WTTC 1,000 V, UL 1277 TC-ER 600 V & CSA AWM Dual-Shielded Specification
Flame retardancy & smoke/halogen emission: Flame-retardant and environmental performance verified per UL Subject 2277 WTTC 1,000 V, UL 1277 TC-ER 600 V & CSA AWM Dual-Shielded Specification
RoHS & REACH compliance: RoHS 2 (2011/65/EU + 2015/863) & REACH SVHC compliant

Reference standards

Governing standard: UL Subject 2277 WTTC 1,000 V, UL 1277 TC-ER 600 V & CSA AWM Dual-Shielded 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: CONTROL TM/CY UL WTTC 1000V
Sheath colour & metre marking: Continuous metre-marked black outer finish (-40 °C Oil-Resis)
Customs tariff (HS): 8544.49 / 8544.60

Sizes

3 standard CONTROL TM/CY UL WTTC 1000V wind turbine configurations

Manufactured to UL Subject 2277 WTTC 1,000 V, UL 1277 TC-ER 600 V & CSA AWM Dual-Shielded 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
CONTROL TM/CY UL WTTC 1000V Construction Schedule (−40…+90 °C)
CONTROL TM 7G1.5 mm²	7G1.5 mm² (or 7C × 16 AWG)	IEC 60228 Class 5/6 / Class K Cu	11.4	215	2.4	70
CONTROL TM 12G1.5 mm²	12G1.5 mm² (or 12C × 16 AWG)	IEC 60228 Class 5/6 / Class K Cu	14.8	345	4.1	90
CONTROL TM 18G2.5 mm²	18G2.5 mm² (or 18C × 14 AWG)	IEC 60228 Class 5/6 / Class K Cu	19.6	680	9.8	120

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 WTTC 1,000 V, UL 1277 TC-ER 600 V & CSA AWM Dual-Shielded Specification.

Electrical & thermal parameters
Configuration	Max. DC R₂₀ Ω/km	Rating / Impedance	Operating temp.
7G1.5 mm² (or 7C × 16 AWG)	13.30	1,000 V WTTC / 600 V TC-ER (18 A)	−40…+90 °C
12G1.5 mm² (or 12C × 16 AWG)	13.30	1,000 V WTTC / 600 V TC-ER (16 A)	−40…+90 °C
18G2.5 mm² (or 18C × 14 AWG)	7.98	1,000 V WTTC / 600 V TC-ER (24 A)	−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 WTTC 1,000 V, UL 1277 TC-ER 600 V & CSA AWM Dual-Shielded Specification)	DC resistance at 20 °C and insulation/sheath wall thickness within UL Subject 2277 WTTC 1,000 V, UL 1277 TC-ER 600 V & CSA AWM Dual-Shielded Specification limits	Every manufactured drum length
AC high-voltage dielectric & insulation resistance test (UL Subject 2277 WTTC 1,000 V, UL 1277 TC-ER 600 V & CSA AWM Dual-Shielded Specification)	Zero dielectric breakdown and verified insulation resistance for 1,000 V WTTC / 600 V TC-ER rating	Every manufactured drum length
Sample tests
Low-temperature drip-loop torsion, oil & flame qualification (UL Subject 2277 WTTC 1,000 V, UL 1277 TC-ER 600 V & CSA AWM Dual-Shielded 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 / UL 1277 TC-ER 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 CONTROL TM/CY UL WTTC 1000V UL 2277 WTTC / UL 1277 TC-ER 1,000 V WTTC / 600 V TC-ER 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

PDFCONTROL TM/CY UL Type WTTC 1,000 V / TC-ER 600 V Foil + 85% TCWB Dual-Shielded Torsion Control Cable – technical datasheet3 configurations · 4-layer construction, technical data, approvals XLSXCONTROL TM/CY UL WTTC 1000V 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 CONTROL TM/CY UL WTTC 1000V (CONTROL TM/CY UL Type WTTC 1,000 V / TC-ER 600 V Foil + 85% TCWB Dual-Shielded Torsion Control Cable)?

CONTROL TM/CY UL WTTC 1000V (CONTROL TM/CY UL Type WTTC 1,000 V / TC-ER 600 V Foil + 85% TCWB Dual-Shielded Torsion Control Cable) is manufactured in accordance with UL Subject 2277 WTTC 1,000 V, UL 1277 TC-ER 600 V & CSA AWM Dual-Shielded Specification for 1,000 V WTTC / 600 V TC-ER wind turbine service over -40 to +90 °C. Its 4-layer construction comprises class 5 flexible bare copper (2-50 cores), pvc / nylon composite core insulation and -40 °c oil-resistant thermoplastic jacket.

What is the minimum bending radius and operating temperature range for CONTROL TM/CY UL WTTC 1000V?

The minimum bending radius for CONTROL TM/CY UL WTTC 1000V 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 CONTROL TM/CY UL WTTC 1000V arranged from inside to outside?

From inside to outside, the construction sequence is: (01) Class 5 Flexible Bare Copper (2-50 Cores) — Stranded plain copper conductors (18 AWG to 2 AWG); (02) PVC / Nylon Composite Core Insulation — UL WTTC 1,000 V & TC-ER 600 V numbered core insulation; (03) Al/PET Foil + 85% Tinned Copper Braid (CY) — Dual electromagnetic shielding for nacelle & tower tray circuits; (04) -40 °C Oil-Resistant Thermoplastic Jacket — UL WTTE wind turbine torsion-tested outer sheath.

What factory test certificates are supplied with CONTROL TM/CY UL WTTC 1000V?

Every production drum of CONTROL TM/CY UL WTTC 1000V undergoes routine conductor DC resistance, AC high-voltage dielectric and dimensional testing per UL Subject 2277 WTTC 1,000 V, UL 1277 TC-ER 600 V & CSA AWM Dual-Shielded 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

CONTROL TM/CY UL WTTC 1000V CONTROL TM/CY UL Type WTTC 1,000 V / TC-ER 600 V Foil + 85% TCWB Dual-Shielded Torsion Control Cable

Selected sizes:


Reel & motion:
- Reel type: 
- Drum core diameter (mm): 
- Cable length on drum (m): 
- Travel speed (m/min): 
- Max. acceleration: 
- Cycles per hour: 
- Length and quantity: 
- Ambient temperature: 
- Exposure (outdoor, water, oil, abrasion): 
- Destination country: 
- Equipment and operating conditions:

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