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Product

UNOLS 0.681" 8,000 m double-armored electro-optic tow cableUNOLS 0.681" EOM Std3,000 VAC/VDC (10–20 kW)204.6 kN (8,000 m Depth)

A302351 (UNOLS 0.681") 3,000 V 8,000m Double-Armored EOM Tow CableUNOLS 0.681" EOM · 1.8/3 kV · Unols 0.681" 8,000 m double-armored electro-optic tow cable

A302351 / A304097 / A305382 (UNOLS 0.681" / 0.393") Double-Armored Stainless-Steel-Tube Deep-Sea Electro-Optic Tow Cable (UNOLS 0.681" EOM, 1.8/3 kV, -40 °C to +80 °C, min. bend radius 15 × OD).

Water-resistant

Anti-torsion braid

EMC screen

Outdoor & humid

Configuration

Order designation: A302351 Type A (Standard Lift)
Outer Ø ≈: 25.4 mm
Net weight ≈: 1,680 kg/km
Tensile rating ≈: 320.0 kN
Core / stranding: Class 5 tinned Cu + 316L FIMT

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 kV
Operating temp.: −40…+80 °C
Min. bend radius: 15 × OD
Core / conductor: 3×11 AWG
Outer protection: 204.6 kN Double
Standard: UNOLS 0.681" EOM

Typical values for this cable type, based on UNOLS Standard 0.681" 8,000 m Electro-Optic Tow & ROV — confirmed in the datasheet and quotation for your order.

Application fit

Is A302351 right for your machine?

A302351 / A304097 / A305382 (UNOLS 0.681" / 0.393") Double-Armored Stainless-Steel-Tube Deep-Sea Electro-Optic Tow Cable (UNOLS 0.681" EOM, 1.8/3 kV, -40 °C to +80 °C, min. bend radius 15 × OD).

Immersion & wet locations

Suitable

Water-blocked core matrix and hydrolysis-resistant subsea jacketing withstand continuous deepwater hydrostatic pressure.

Vertical / spreader reel

Suitable

Torque-balanced aramid or contra-helical steel armour supports vertical winch deployment without hockling.

Offshore platform & shipboard deck trays

Suitable

Marine-grade outer sheath and armour package resist LARS sheave abrasion, UV exposure and salt-spray corrosion.

Trailing & towing

Suitable

High tensile breaking strength supports underwater towing, ROV excursion and seabed plough/trencher duty.

Energy chain / drag chain

Not suitable

Subsea umbilical and tow construction is not intended for high-cycle indoor factory drag chains.

Use Drag-Chain Servo Cable

Typical machinesMarine & Offshore CableWork-Class & Observation ROV SystemsOffshore Wind & Subsea Power GridsOceanographic, Sonar & Seismic SurveyCommercial Diving & Subsea Intervention

Construction

Layer by layer

Shown: A302351 (UNOLS Standard 0.681" 8,000 m Electro-Optic Tow & ROV) featuring three power conductors (3×11 awg), stainless-steel-tube optical elements (3×smf) and double sxgips steel armor (204.6 kn) (4-layer construction).

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	Three Power Conductors (3×11 AWG)	0-6-12 half-hard copper strands (4.9 Ω/km) with 3,000 V Polyallomer/HDPE insulation
2	Stainless-Steel-Tube Optical Elements (3×SMF)	Three tight-buffered SM fibers armored with concentric plow-steel wires in valleys
3	DPR Void Filler & Polyallomer Belt	Depolymerized rubber water-blocking filler + seamless Polyallomer inner jacket
4	Double SXGIPS Steel Armor (204.6 kN)	Torque-balanced contra-helical ultra-high-strength galvanized steel wires (0.681" OD)

A302351 — Standard Subsea & Marine Execution

Built to UNOLS Standard 0.681" 8,000 m Electro-Optic Tow & ROV with three power conductors (3×11 awg) and double sxgips steel armor (204.6 kn)

A302351 — Custom Drum Length & Termination Kit

Available in custom continuous subsea/wellbore drum lengths or pre-terminated assemblies

A302351 — Routine & Hydrostatic Test Certified

Supplied with EN 10204 3.1 routine dielectric, resistance & pressure/dimensional report

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on UNOLS Standard 0.681" 8,000 m Electro-Optic Tow & ROV. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage / transmission duty: 1.8/3 kV (UNOLS Standard 0.681" 8,000 m Electro-Optic Tow & ROV)
Core / conductor construction: Three Power Conductors (3×11 AWG) — 0-6-12 half-hard copper strands (4.9 Ω/km) with 3,000 V Polyallomer/HDPE insulation
Primary dielectric / buffering: Stainless-Steel-Tube Optical Elements (3×SMF) — Three tight-buffered SM fibers armored with concentric plow-steel wires in valleys

Thermal

Continuous operating temperature: −40…+80 °C (subsea, marine & submersible duty)
Short-circuit / peak thermal rating: Verified thermal stability per UNOLS Standard 0.681" 8,000 m Electro-Optic Tow & ROV
Storage & transport temperature: −40…+80 °C on export wooden/steel drum

Mechanical

Outer protection / armouring: Double SXGIPS Steel Armor (204.6 kN) — Torque-balanced contra-helical ultra-high-strength galvanized steel wires (0.681" OD)
Minimum bending radius: 15 × OD
Hydrostatic, tensile & crush duty: DPR Void Filler & Polyallomer Belt — Depolymerized rubber water-blocking filler + seamless Polyallomer inner jacket

Resistance

Hydrostatic pressure & water blocking: Engineered for continuous submersion and hydrostatic integrity per UNOLS Standard 0.681" 8,000 m Electro-Optic Tow & ROV
Seawater, oil & chemical resistance: Resistant to seawater hydrolysis, hydraulic oils and abrasion per UNOLS Standard 0.681" 8,000 m Electro-Optic Tow & ROV
RoHS & REACH compliance: RoHS 2 (2011/65/EU + 2015/863) & REACH SVHC compliant

Reference standards

Governing standard: UNOLS Standard 0.681" 8,000 m Electro-Optic Tow & ROV
Environmental & test standards: IEC 60228 / IEC 60332 / ISO 13628-5 / EN 10204
Quality management & inspection: ISO 9001:2015 & EN 10204 3.1 factory routine inspection

Identification

Model designation: A302351
Sheath colour & metre marking: Continuous metre-marked black outer finish (204.6 kN Double SXGIPS)
Customs tariff (HS): 8544.49 / 8544.60 / 8544.70

Sizes

3 standard A302351 subsea & marine configurations

Manufactured to UNOLS Standard 0.681" 8,000 m Electro-Optic Tow & ROV for subsea, offshore, deep-well and marine applications.

Dimensions, tensile load & weights
Order designation	Configuration	Core / stranding	Outer Ø ≈ mm	Net weight ≈ kg/km	Tensile rating kN ≈	Min. bend R mm
A302351 Construction Schedule (−40…+80 °C)
A302351 Type A (Standard Lift)	3 × 10 mm² HV + 6×2×1.0 + 12F FIMT	Class 5 tinned Cu + 316L FIMT	25.4	1,680	320.0	380
A302351 Type B (Heavy Work-Class)	3 × 16 mm² HV + 8×2×1.0 + 12F FIMT	Class 5 tinned Cu + 316L FIMT	32.2	2,650	480.0	485
A302351 Type C (Ultra-Deep Trencher)	3 × 25 mm² HV + 12×2×1.0 + 24F FIMT	Class 5 tinned Cu + 316L FIMT	38.1	3,890	680.0	570

Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
Custom core cross-sections, pair/fibre counts, armour grades and factory drum lengths available per UNOLS Standard 0.681" 8,000 m Electro-Optic Tow & ROV.

Electrical, optical & thermal parameters
Configuration	Max. DC R₂₀ / Atten. Ω/km or dB/km	Rating / Impedance	Operating temp.
3 × 10 mm² HV + 6×2×1.0 + 12F FIMT	1.91	1.8/3 kV (≤0.35 dB/km SM)	−40…+80 °C
3 × 16 mm² HV + 8×2×1.0 + 12F FIMT	1.21	1.8/3 kV (≤0.35 dB/km SM)	−40…+80 °C
3 × 25 mm² HV + 12×2×1.0 + 24F FIMT	0.78	1.8/3 kV (≤0.35 dB/km SM)	−40…+80 °C

Every production length undergoes routine conductor DC resistance, high-voltage dielectric or OTDR continuity 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 resistance, continuity & dimensional verification (UNOLS Standard 0.681" 8,000 m Electro-Optic Tow & ROV)	DC resistance at 20 °C / optical attenuation and outer diameter within UNOLS Standard 0.681" 8,000 m Electro-Optic Tow & ROV tolerances	Every manufactured drum length
High-voltage dielectric & insulation resistance test (UNOLS Standard 0.681" 8,000 m Electro-Optic Tow & ROV)	Zero dielectric breakdown and verified insulation resistance for 1.8/3 kV rating	Every manufactured drum length
Sample tests
Hydrostatic pressure, water-blocking & mechanical endurance qualification (UNOLS Standard 0.681" 8,000 m Electro-Optic Tow & ROV)	Verified submersion integrity, tensile load and thermal stability across −40…+80 °C	Type qualification & periodic lot audit

Inspection certificate

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

Product approvals

UNOLS 0.681" EOM 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 A302351 UNOLS 0.681" EOM 1.8/3 kV CE

Delivery form: Heavy-duty export fumigated wooden drums or steel subsea reels
Standard lengths: 500 m, 1,000 m or custom continuous subsea/wellbore lengths
MOQ: 100 m (standard configurations) · 500 m (custom builds)
Lead time: 2–5 weeks ex-works
Incoterms: EXW, FCA, FOB, CIF, DAP

Technical documents

Downloads

PDFA302351 (UNOLS 0.681") 3,000 V 8,000m Double-Armored EOM Tow Cable – technical datasheet3 sizes · construction, technical data, approvals XLSXA302351 spec data (Excel)All 3 sizes with dimensions and data, for your BOM or quotation

Revision: 2026-10-25
Updated: 2026-10-25

FAQ

Questions engineers ask first

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

What governing standard and construction define A302351 (A302351 (UNOLS 0.681") 3,000 V 8,000m Double-Armored EOM Tow Cable)?

A302351 (A302351 (UNOLS 0.681") 3,000 V 8,000m Double-Armored EOM Tow Cable) is manufactured in accordance with UNOLS Standard 0.681" 8,000 m Electro-Optic Tow & ROV for 1.8/3 kV service over -40 °C to +80 °C. Its 4-layer construction comprises three power conductors (3×11 awg), stainless-steel-tube optical elements (3×smf) and double sxgips steel armor (204.6 kn).

What is the minimum bending radius and operating temperature range for A302351?

The minimum bending radius for A302351 is 15 × OD across its continuous operating temperature range of -40 °C to +80 °C, ensuring mechanical and dielectric reliability in subsea, marine and submersible service.

How are the concentric layers of A302351 arranged from inside to outside?

From inside to outside, the construction sequence is: (01) Three Power Conductors (3×11 AWG) — 0-6-12 half-hard copper strands (4.9 Ω/km) with 3,000 V Polyallomer/HDPE insulation; (02) Stainless-Steel-Tube Optical Elements (3×SMF) — Three tight-buffered SM fibers armored with concentric plow-steel wires in valleys; (03) DPR Void Filler & Polyallomer Belt — Depolymerized rubber water-blocking filler + seamless Polyallomer inner jacket; (04) Double SXGIPS Steel Armor (204.6 kN) — Torque-balanced contra-helical ultra-high-strength galvanized steel wires (0.681" OD).

What factory test certificates are supplied with A302351?

Every production drum of A302351 undergoes routine conductor resistance/continuity, high-voltage dielectric and dimensional testing per UNOLS Standard 0.681" 8,000 m Electro-Optic Tow & ROV, and is delivered with an EN 10204 3.1 factory test certificate.

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A302351 (UNOLS 0.681") 3,000 V 8,000m Double-Armored EOM Tow Cable

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