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Product

subsea umbilical, ROV tether & oceanographic tow cable ITU-T G.972 / 10 kV DC Subsea10 kV DC (-20 to +70 °C)Double Galvanized Steel Armour & PP

10 kV DC 24–48F G.654E / G.652D Laser-Welded SS & Copper-Tube Subsea Observatory Trunk CableITU-T G.972 / 10 kV DC Subsea — 10 kV DC — -20 to +70 °C Subsea & Offshore Cable

10 kV DC 24–48F G.654E / G.652D Laser-Welded SS & Copper-Tube Subsea Observatory Trunk Cable (ITU-T G.972 / 10 kV DC Subsea) engineered for 10 kV DC service across -20 to +70 °C (min. bend radius 20 × OD).

Water-resistant

EMC screen

Oil-resistant

Approved

Configuration

Order designation: 10kVDC Observatory Trunk Config A
Outer Ø ≈: 32.0 mm
Net weight ≈: 1,850 kg/km
Tensile rating ≈: 85.0 kN
Core / stranding: Compacted / Class 5 Cu/SnCu + FO

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: 10 kV DC
Operating temp.: −20…+70 °C
Min. bend radius: 20 × OD
Core / conductor: Laser-Welded SS
Outer protection: Double Galvanize
Standard: ITU-T G.972 / 10

Typical values for this cable type, based on ITU-T G.972 / G.654E 10 kV DC Cabled Subsea Observatory Electro-Optical Trunk Specification — confirmed in the datasheet and quotation for your order.

Application fit

Is 10kVDC Observatory Trunk right for your machine?

Immersion & wet locations

Suitable

Hydrolysis-resistant polyurethane (PUR) or HDPE jacket and water-blocked core withstand continuous deepwater hydrostatic immersion.

Vertical / spreader reel

Suitable

Torque-balanced contra-helical steel wire armour or high-modulus aramid strength member supports dynamic winch deployment without hockling

Trailing & towing

Suitable

Abrasion-resistant outer sheath and high working-load strength elements handle dynamic marine towing, buoy mooring and ROV excursion.

Offshore platform & shipboard deck trays

Suitable

UV-stabilised, oil- and seawater-resistant construction withstands A-frame sheaves, traction winches and open research-vessel decks.

Energy chain / drag chain

Not suitable

Subsea umbilical, ROV tether and towed array cables are not designed for indoor factory automation drag chains.

Use M23 Servo Assembly

Typical machinesUnderwater & Ocean ExplorationOceanographic CTD, ADCP & Deep-Tow SurveysWork-Class & Observation ROV / AUV SystemsSide-Scan Sonar, SAS & Towed Hydrophone ArraysMarine 2D/3D/UHR Seismic Streamers & OBC

Construction

Layer by layer

Shown: 10kVDC Observatory Trunk (ITU-T G.972 / G.654E 10 kV DC Cabled Subsea Observatory Electro-Optical Trunk Specification) featuring laser-welded ss tube (24–48×g.654e/g.652d), steel pressure vault & copper conductor tube and double galvanized steel armour & pp serving (4-layer construction).

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	Laser-Welded SS Tube (24–48×G.654E/G.652	Hermetic stainless-steel tube housing ultra-low-loss single-mode fibers
2	Steel Pressure Vault & Copper Conductor	High-strength steel vault + continuous copper tube for 10 kV DC feed
3	10kV DC High-Purity MDPE / HDPE Insulati	High-voltage direct-current polyethylene dielectric
4	Double Galvanized Steel Armour & PP Serv	LWISAIDA galvanized steel wire armour + polypropylene outer serving

10kVDC Observatory Trunk — Standard Subsea & Offshore Execution

Built to ITU-T G.972 / G.654E 10 kV DC Cabled Subsea Observatory Electro-Optical Trunk Specification with laser-welded ss tube (24–48×g.654e/g.652d) and double galvanized steel armour & pp serving

10kVDC Observatory Trunk — Custom Continuous Winch / Reel Length

Available in custom continuous subsea winch, tow or seabed lengths with water-blocked terminations

10kVDC Observatory Trunk — Hydrostatic, Tensile & Routine Certified

Supplied with EN 10204 3.1 routine dielectric, optical OTDR / DC resistance & tensile test report

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on ITU-T G.972 / G.654E 10 kV DC Cabled Subsea Observatory Electro-Optical Trunk Specification. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage / transmission duty: 10 kV DC (ITU-T G.972 / G.654E 10 kV DC Cabled Subsea Observatory Electro-Optical Trunk Specification)
Core / conductor construction: Laser-Welded SS Tube (24–48×G.654E/G.652D) — Hermetic stainless-steel tube housing ultra-low-loss single-mode fibers
Primary dielectric / buffering: Steel Pressure Vault & Copper Conductor Tube — High-strength steel vault + continuous copper tube for 10 kV DC feed

Thermal

Continuous operating temperature: −20…+70 °C (subsea & offshore duty)
Hydrostatic & thermal stability: Verified thermal and hydrostatic stability per ITU-T G.972 / G.654E 10 kV DC Cabled Subsea Observatory Electro-Optical Trunk Specification
Storage & transport temperature: −40…+80 °C on export wooden/steel winch reel

Mechanical

Outer protection / armouring: Double Galvanized Steel Armour & PP Serving — LWISAIDA galvanized steel wire armour + polypropylene outer serving
Minimum bending radius: 20 × OD
Armour, strength member & mechanical duty: 10kV DC High-Purity MDPE / HDPE Insulation — High-voltage direct-current polyethylene dielectric

Resistance

Seawater, hydrostatic & hydrolysis resistance: Engineered for continuous seawater immersion, pressure cycling and hydrolysis resistance per ITU-T G.972 / G.654E 10 kV DC Cabled Subsea Observatory Electro-Optical Trunk Specification
Oil, drilling mud & abrasion resistance: Resistant to marine hydraulic oils, salt mist, winch sheave wear and seabed abrasion per ITU-T G.972 / G.654E 10 kV DC Cabled Subsea Observatory Electro-Optical Trunk Specification
RoHS & REACH compliance: RoHS 2 (2011/65/EU + 2015/863) & REACH SVHC compliant

Reference standards

Governing standard: ITU-T G.972 / G.654E 10 kV DC Cabled Subsea Observatory Electro-Optical Trunk Specification
Environmental & test standards: IEC 60228 / IEC 60794 / ITU-T G.972 / IEEE 1580 / EN 10204
Quality management & inspection: ISO 9001:2015 & EN 10204 3.1 factory routine inspection

Identification

Model designation: 10kVDC Observatory Trunk
Sheath colour & metre marking: Continuous metre-marked black outer finish (Double Galvanize)
Customs tariff (HS): 8544.49 / 8544.60 / 8544.70

Sizes

3 standard 10kVDC Observatory Trunk subsea & offshore configurations

Manufactured to ITU-T G.972 / G.654E 10 kV DC Cabled Subsea Observatory Electro-Optical Trunk Specification for subsea, oceanographic, ROV, seismic and offshore applications.

Dimensions, tensile load & weights
Order designation	Configuration	Core / stranding	Outer Ø ≈ mm	Net weight ≈ kg/km	Breaking / tensile kN ≈	Min. bend R mm
10kVDC Observatory Trunk Construction Schedule (−20…+70 °C)
10kVDC Observatory Trunk Config A	3×25–50 mm² (or 3P+FO Composite)	Compacted / Class 5 Cu/SnCu + FO	32.0	1,850	85.0	380
10kVDC Observatory Trunk Config B	3×95–150 mm² (or Heavy EOM)	Compacted / Class 5 Cu/SnCu + FO	48.5	4,280	130.0	580
10kVDC Observatory Trunk Config C	3×240–400 mm² (or Trunk HV/MV)	Compacted Cu + Lead/Armour + FO	78.0	9,650	210.0	950

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 breaking loads and continuous winch/seabed lengths available per ITU-T G.972 / G.654E 10 kV DC Cabled Subsea Observatory Electro-Optical Trunk Specification.

Electrical, optical & thermal parameters
Configuration	Max. DC R₂₀ / Atten. Ω/km or dB/km	Rating / Impedance	Operating temp.
3×25–50 mm² (or 3P+FO Composite)	0.50	10 kV DC (Subsea/MV)	−20…+70 °C
3×95–150 mm² (or Heavy EOM)	0.19	10 kV DC (Subsea/MV)	−20…+70 °C
3×240–400 mm² (or Trunk HV/MV)	0.08	10 kV DC (Trunk/HV)	−20…+70 °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, optical OTDR continuity & dimensional verification (ITU-T G.972 / G.654E 10 kV DC Cabled Subsea Observatory Electro-Optical Trunk Specification)	DC resistance at 20 °C / optical attenuation and outer diameter within ITU-T G.972 / G.654E 10 kV DC Cabled Subsea Observatory Electro-Optical Trunk Specification tolerances	Every manufactured drum length
High-voltage dielectric & insulation resistance test (ITU-T G.972 / G.654E 10 kV DC Cabled Subsea Observatory Electro-Optical Trunk Specification)	Zero dielectric breakdown and verified insulation resistance for 10 kV DC rating	Every manufactured drum length
Sample tests
Hydrostatic pressure, tensile breaking load & water-blocking qualification (ITU-T G.972 / G.654E 10 kV DC Cabled Subsea Observatory Electro-Optical Trunk Specification)	Verified subsea pressure integrity, torque-balanced tensile performance and thermal stability across −20…+70 °C	Type qualification & periodic lot audit

Inspection certificate

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

Product approvals

ITU-T G.972 / 10 kV DC Subsea 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 10kVDC Observatory Trunk ITU-T G.972 / 10 kV DC Subsea 10 kV DC CE

Delivery form: Heavy-duty export fumigated wooden drums, steel oceanographic winch reels or submarine turntables
Standard lengths: 500 m, 1,000 m, 3,000 m, 6,000 m or custom continuous subsea lengths
MOQ: 100 m (standard configurations) · 500 m (custom subsea builds)
Lead time: 2–6 weeks ex-works
Incoterms: EXW, FCA, FOB, CIF, DAP

Technical documents

Downloads

PDF10 kV DC 24–48F G.654E / G.652D Laser-Welded SS & Copper-Tube Subsea O – technical datasheet3 sizes · construction, technical data, approvals XLSX10kVDC Observatory Trunk spec data (Excel)All 3 sizes with dimensions and data, for your BOM or quotation

Revision: 2026-10-26
Updated: 2026-10-26

FAQ

Questions engineers ask first

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

What governing standard and construction define 10kVDC Observatory Trunk (10 kV DC 24–48F G.654E / G.652D Laser-Welded SS & Copper-Tube Subsea Observatory Trunk Cable)?

10kVDC Observatory Trunk (10 kV DC 24–48F G.654E / G.652D Laser-Welded SS & Copper-Tube Subsea Observatory Trunk Cable) is manufactured in accordance with ITU-T G.972 / G.654E 10 kV DC Cabled Subsea Observatory Electro-Optical Trunk Specification for 10 kV DC service over -20 to +70 °C. Its 4-layer construction comprises laser-welded ss tube (24–48×g.654e/g.652d), steel pressure vault & copper conductor tube and double galvanized steel armour & pp serving.

What is the minimum bending radius and operating temperature range for 10kVDC Observatory Trunk?

The minimum bending radius for 10kVDC Observatory Trunk is 20 × OD across its continuous operating temperature range of -20 to +70 °C, ensuring mechanical, hydrostatic and dielectric reliability in subsea and offshore service.

How are the concentric layers of 10kVDC Observatory Trunk arranged from inside to outside?

From inside to outside, the construction sequence is: (01) Laser-Welded SS Tube (24–48×G.654E/G.652D) — Hermetic stainless-steel tube housing ultra-low-loss single-mode fibers; (02) Steel Pressure Vault & Copper Conductor Tube — High-strength steel vault + continuous copper tube for 10 kV DC feed; (03) 10kV DC High-Purity MDPE / HDPE Insulation — High-voltage direct-current polyethylene dielectric; (04) Double Galvanized Steel Armour & PP Serving — LWISAIDA galvanized steel wire armour + polypropylene outer serving.

What factory test certificates are supplied with 10kVDC Observatory Trunk?

Every production drum of 10kVDC Observatory Trunk undergoes routine conductor resistance/OTDR continuity, high-voltage dielectric and dimensional testing per ITU-T G.972 / G.654E 10 kV DC Cabled Subsea Observatory Electro-Optical Trunk 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

10kVDC Observatory Trunk 10 kV DC 24–48F G.654E / G.652D Laser-Welded SS & Copper-Tube Subsea Observatory Trunk Cable

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