Heavy-Duty ROV Main Tether & Seabed Trencher / Plough Umbilical Cable (250 V–3 kV)
Extra-flexible work-class ROV main tethers and high-voltage seabed trenching machine and burial plough electro-optical umbilicals (REF 32629, REF 37256, REF 50899, REF 51332, REF 37640, REF 43330, REF 59986, REF 55753 and Type 2.1-TAU38 / Type 2.2-DAU17). Engineered for 250 V to 3,000 V power transmission, 75 Ω coaxial video, singlemode/multimode loose-tube or M-PAC optical fibers and 200 daN to 60,000 daN (600 kN) aramid or 740 kN triple-steel-armor tensile breaking loads.
Tracked seabed trenchers, cable-burial ploughs, subsea boring machines and heavy work-class ROVs operate under severe dynamic tension, continuous sheave bending and high electrical power demand. This family brings together extra-flexible 250 V coaxial ROV tethers (REF 32629 and REF 37256), 1.5–2.4 kV floating electro-optical ROV tethers (REF 50899 and REF 51332), 3 kV seabed trencher and plough electro-optical umbilicals (REF 37640 and REF 43330), and deepwater double/triple steel-armored M-PAC umbilicals (Type 2.1-TAU38 and Type 2.2-DAU17).
For tracked seabed trenching machines, REF 37640 integrates seventeen 25 mm² (3 kV) XLPE motor feeder cores, six 3×1.0 mm² (1 kV) control triplets, four 2×0.22 mm² (250 V) shielded pairs and 12 multimode 62.5/125 μm optical fibers inside a contra-helical double-layer aramid braid rated for a 60,000 daN (600 kN) theoretical breaking load at 76 mm outside diameter.
Where cable-burial ploughs or mine-clearance ROVs require a buoyant tether that stays clear of tracks and thrusters, REF 43330 (42 mm OD, 3,000 V, 8 SM fibers, 15,000 daN breaking load) uses oil-filled interstices (density 0.887) to achieve -30 g/m buoyancy in seawater, while REF 50899 (2,400 V, 2,300 daN) and REF 51332 (1,500 V, 1,000 daN) float with seawater densities of 0.98 and 0.92.
Specify the model reference, operating voltage (250 V to 3 kV), optical fiber type, required breaking strength and winch drum diameter in your enquiry. TEBAOFLEX manufactures ROV and seabed vehicle umbilicals from a 50 m minimum order quantity with a lead time of 7–45 working days.
Explore the marine, offshore and underwater cable range for related configurations.
For related deepwater electro-optical lift cables and electro-hydraulic subsea umbilicals, compare: Deepwater High-Load Hybrid Fiber Optic Cable (high-load deepwater hybrid fiber-optic and power cable for vertical deployment and winching); Subsea Electro-Hydraulic & Electro-Optical Hybrid Umbilical Cable (OMB Series — 16OMB4 to 35OMB22) (OMB Series electro-hydraulic and electro-optical umbilicals with integrated high-pressure hoses). Verify medium-voltage 1 kV to 3 kV insulation thickness, single-mode fiber count, and safe working load.
Construction
The representative construction illustrates the REF 37640 3 kV Seabed Trenching & Burying Machine Electro-Optical Umbilical (OD 76 mm, 60,000 daN breaking load): 17×25 mm² (3 kV) XLPE flexible copper power conductors, 6×3×1.0 mm² (1 kV) TPE-E control triplets, 4×2×0.22 mm² (250 V) foil-shielded XLPE signal pairs and 12×62.5/125 μm multimode optical fibers in 6 PUR-sheathed loose tubes, cabled with water-blocking compound under a polyurethane inner sheath, contra-helical double-layer aramid fiber braid and a heavy-duty polyurethane outer jacket.
| Component | Material and construction |
|---|---|
| Low- and medium-voltage power conductors (250 V to 3,000 V) | Extra-flexible plain or tinned copper conductors insulated with XLPE (17×25 mm² at 3 kV on REF 37640), special low-density polyolefin (14×1.2 mm² at 3 kV on REF 43330; 3×0.93 mm² at 2.4 kV on REF 50899) or TPE-E (6×1.5 mm² at 250 V on REF 32629). |
| Control triplets, shielded pairs & quads | Tinned-copper spun-shielded or Al/polyester foil-shielded pairs, triplets and quads insulated in polyester elastomer (TPE-E) or XLPE for low-capacitance actuator control and telemetry. |
| Optical fiber & 75 Ω video coaxial elements | Loose-tube singlemode 9/125 μm (8 fibers on REF 43330) or multimode 62.5/125 μm (12 fibers in 6 tubes on REF 37640), hermetically welded M-PAC metal-tube fibers (Type 2.1-TAU38 / 2.2-DAU17), or 1 to 3 × 75 Ω video coaxial cores (REF 32629 / 37256). |
| Water-blocking & buoyancy control matrix | Elastomeric watertight stranding compound or low-density oil-filled interstices (density 0.887 on REF 43330) engineered for either high negative stability or controlled positive buoyancy (-30 g/m to -4 g/m in seawater). |
| Tensile reinforcement / armor system | Central aramid core (200 daN on REF 32629), synthetic fiber braid (1,000–15,000 daN), contra-helical double-layer aramid braid (60,000 daN on REF 37640), or torque-balanced double/triple galvanized steel wire armor (147–740 kN). |
| Inner & outer sheathing | Abrasion-, cut- and hydrolysis-resistant polyurethane (PUR) inner and outer sheaths, or low-density polyolefin floating sheaths (REF 43330, REF 50899, REF 51332). |
Applications
Match the umbilical or tether construction to your vehicle class—from 250 V inspection/work ROV tethers and static manipulator cables up to 3 kV tracked seabed trenchers, burial ploughs and 740 kN boring machines.
- Tracked seabed trenching machines, jetting sleds and mechanical rock trenchers requiring 3 kV high-current motor power (17×25 mm²), fiber-optic telemetry and 60,000 daN (600 kN) aramid tensile capacity (REF 37640).
- Towed subsea cable-burial ploughs requiring a 3,000 V buoyant (-30 g/m in seawater) aluminum-tape-armored and aramid-braided electro-optical umbilical that floats clear of the plough share (REF 43330).
- Ship-to-ROV main tethers for inspection, work-class, bomb-disposal (EOD) and naval mine-clearance ROVs operating at 250 V to 2,400 V with 75 Ω coax or fiber-optic video (REF 32629, REF 37256, REF 50899, REF 51332).
- Deepwater ROV main lift umbilicals, subsea boring drills and on-vehicle static wiring for underwater projectors, cameras and manipulator arms (Type 2.1-TAU38, Type 2.2-DAU17, REF 59986, REF 55753).
For work-class ROV system pairing and neutrally buoyant excursion tethers, review: Custom Subsea & Marine Cable Manufacturer (custom engineering for subsea trencher umbilicals, ROV main lifts, and offshore winches); 4GAX181 & Floating Neutrally Buoyant Fiber-Optic / Electro-Optical ROV Tether Cable (4GAX181 floating and neutrally buoyant fiber-optic ROV tethers for TMS cage excursions). Coordinate main umbilical voltage drop, torque-balanced aramid or steel armor, and bend stiffener geometry.
Specifications
| Parameter | Value |
|---|---|
| Rated operating voltage | 250 V (REF 32629, 37256, 55753), 600–1,000 V (REF 59986), 1,500 V (REF 51332), 2,400 V (REF 50899) and 3,000 V (REF 37640, 43330) |
| Tensile breaking strength range | 200 daN (REF 32629), 1,000–2,300 daN (REF 51332/50899), 15,000 daN (REF 43330), 60,000 daN / 600 kN (REF 37640), 740 kN (Type 2.1-TAU38) |
| Optical & coaxial transmission | 1 or 3 × 75 Ω video coax (REF 32629/37256/55753); 2–12 × 62.5/125 MM or 3–8 × 9/125 SM fibers; M-PAC metal-tube SM fibers |
| Nominal overall diameter range | 8.5 mm (REF 59986) and 11.9–15.0 mm (ROV tethers) up to 38.1 mm (Type 2.1-TAU38), 42.0 mm (REF 43330) and 76.0 mm (REF 37640) |
| Minimum bending radius | 45–70 mm static / 90–250 mm dynamic on ROV tethers; 600 mm dynamic on REF 43330 plough cable; 1,000 mm on REF 37640 trencher cable |
| Hydrostatic pressure & depth rating | Up to 30 MPa (3,000 m) on Type 2.1-TAU38 and 70 MPa (7,000 m) on Type 2.2-DAU17 double-armored M-PAC umbilical |
| Submerged weight in seawater | Buoyant (-30 g/m on REF 43330; -4 g/m on REF 50899) or ballasted heavy-duty (3,600 g/m on REF 37640; 4,100 g/m on Type 2.1-TAU38) |
| Operating temperature range | -30 °C to +80 °C (REF 32629, 37256, 51332); -20 °C to +70/+80 °C (REF 59986, 55753); -10 °C to +70 °C (REF 37640, 43330, 50899) |
| Commercial supply terms | Minimum order quantity 50 m; manufacturing lead time 7–45 working days |
| Model designation | Application & vehicle type | Electrical, coaxial & optical core makeup | Operating voltage | Reinforcement & breaking load | Nominal OD (mm) | Min. bend radius static / dynamic (mm) | Weight in air / seawater (kg/km) |
|---|---|---|---|---|---|---|---|
| REF 32629 | Heavy ROV Main Tether (Coax + Power) | 6×1.5 mm² + 2×0.25 mm² + 1×(2×0.15 mm² spun-shielded pair) + 1×75 Ω Coax | 250 V | Central aramid fiber core + PUR sheath; 200 daN | 11.9 (+0.1/-0.3) | ≥55 / ≥110 | 220 / — |
| REF 37256 | Overall-Shielded Triple-Coax ROV Tether | 2×(2×0.75 mm² shielded pairs) + 2×(4×0.25 mm² shielded quads) + 3×75 Ω Coax | 250 V | Overall tinned-copper spun shield + PUR sheath | 14.5 ± 0.7 | ≥70 / ≥140 | 200 / — |
| REF 50899 | Floating Bomb-Disposal (EOD) ROV Tether | 3×0.93 mm² tinned copper + 1×0.22 mm² plain copper + 3×9/125 SM tight-buffered fibers | 2,400 V (0.93²) / 100 V (0.22²) | Synthetic fiber braid + Polyolefin sheath; 2,300 daN | ≤15.0 | — / ≥250 | Buoyant / -4 (d=0.98) |
| REF 51332 | Floating Mine-Clearance ROV Tether | 3×0.60 mm² alloy + 2×(2×0.34 mm² alloy pairs) + 2×62.5/125 MM fibers in loose tube | 1,500 V (0.60²) | Al/PET shield + Synthetic fiber braid + Polyolefin; 1,000 daN | 14.0 ± 0.5 | — / ≥170 | Buoyant (seawater d=0.92) |
| REF 37640 | Tracked Seabed Trenching & Burying Machine | 17×25 mm² XLPE + 6×(3×1.0 mm² TPE-E) + 4×(2×0.22 mm² XLPE STP) + 12×62.5/125 MM (6 tubes) | 3 kV (25²) / 1 kV (1²) / 250 V (0.22²) | Contra-helical double-layer aramid braid + PUR; 60,000 daN | 76.0 ± 1.0 | ≥1,000 / — | 8,500 / 3,600 |
| REF 43330 | Tracked Subsea Cable-Burial Plough (Floating) | 11×1.2 mm² + 3×1.2 mm² polyolefin power + 8×9/125 SM fibers in loose tubes (oil-filled, d=0.887) | 3,000 V | Aluminum tape armor + Fiber braid + Polyolefin; 15,000 daN | 42.0 ± 0.5 | — / ≥600 | 1,306 / -30 |
| REF 59986 | Subsea Machine & Projector Static Power | 3×1.0 mm² flexible tinned copper in XLPE + Al/PET tape & drain wire | 1,000 V | Flame-retardant PUR outer sheath (IEC 60332-1) | 8.5 ± 0.4 | ≥65 (static) | 110 / — |
| REF 55753 | Subsea Robot Arm, Sensor & Video Static Cable | 2×1.0 mm² TPE-E + 2×(2×0.34 mm² foil-shielded TPE-E pairs) + 1×75 Ω Coax | 600 V (1.0²) / 250 V (0.34²) | Watertight stranding + PUR outer sheath | ≤9.0 | ≥45 / ≥90 | 110 / 45 |
| Type 2.1-TAU38 | Heavy Work-ROV & Subsea Boring Machine | High-load copper power + control + M-PAC metal-tube SM optical fibers (≤0.7 dB/km @ 1310 nm) | HV ROV / Boring feed (≤2.0 Ω/km) | Torque-balanced triple steel wire armor; ≥740 kN (≥30 MPa) | 38.1 | Traction sheave rated | 5,250 / 4,100 |
| Type 2.2-DAU17 | Deepwater Towing & Work-ROV Main Umbilical | Copper power/telemetry + M-PAC metal-tube SM optical fibers (≤0.7 dB/km @ 1310 nm) | Deepwater ROV feed (≤18.0 Ω/km) | Kink-resistant double steel wire armor; ≥147 kN (≥70 MPa) | 17.4 | Traction sheave rated | 1,060 / 820 |
| Model & sub-circuit element | Conductor or fiber specification | Insulation & sub-shielding | Rated voltage / wavelength | Max. DC resistance or optical attenuation | Impedance / capacitance & temp. range |
|---|---|---|---|---|---|
| REF 32629 Power & Signal Cores | 6×1.5 mm² plain copper + 2×0.25 mm² tinned + 1×2×0.15 mm² tinned pair | Polyester elastomer (TPE-E); tinned-copper spun pair shield | 250 V | 1.5² ≤14 Ω/km; 0.25² ≤84.5 Ω/km; 0.15² ≤148.1 Ω/km | -30 °C to +80 °C |
| REF 32629 & 37256 75 Ω Video Coax | 1×75 Ω Coax (REF 32629) or 3×75 Ω Coax (REF 37256) | Tinned-copper braid shield under PUR outer sheath | 250 V assembly | ≤0.05 dB/m @ 10 MHz (32629); 0.22 dB/m @ 200 MHz (37256) | 75 ± 7 Ω; 81 pF/m (37256); -30 to +80 °C |
| REF 37256 Shielded Pairs & Quads | 2×2×0.75 mm² extra-flexible tinned pairs + 2×4×0.25 mm² tinned quads | TPE-E insulation; tinned-copper spun shield on each pair/quad | 250 V | 0.75 mm² ≤29.4 Ω/km; 0.25 mm² ≤85.3 Ω/km | Overall tinned-copper spun shield; -30 to +80 °C |
| REF 37640 3 kV Trencher Power & Control | 17×25 mm² plain copper + 6×3×1.0 mm² triplets + 4×2×0.22 mm² pairs | XLPE (25² & 0.22² with Al/PET shield) + TPE-E (1.0² triplets) | 3 kV / 1 kV / 250 V | 25² ≤0.819 Ω/km; 1.0² ≤23.4 Ω/km; 0.22² ≤93.3 Ω/km | 12×62.5/125 MM in 6 loose tubes; -10 to +70 °C |
| REF 43330 3 kV Plough Power & SM Fiber | 11×1.2 mm² + 3×1.2 mm² flexible plain copper + 8×9/125 μm SM fibers | Special low-density polyolefin + loose tubes under polyolefin sheath | 3,000 V; 1310 / 1550 nm | 0.36–0.40 dB/km @ 1285–1330 nm; 0.22–0.30 dB/km @ 1550 nm | Oil-filled interstices (d=0.887); -10 to +70 °C |
| REF 50899 & 51332 Floating ROV Cores | 50899: 3×0.93² + 1×0.22² + 3×SM; 51332: 3×0.60² + 2×2×0.34² + 2×MM | Special polyolefin insulation & sheath; Al/PET shield on 51332 | 2,400/100 V & 1,500 V | 0.93² ≤22.7, 0.22² ≤91.7 Ω/km (SM 0.40/0.25 dB/km); 0.6² ≤48, 0.34² ≤84 Ω/km (MM 1.1 dB/km) | -10 to +70 °C (50899); -30 to +80 °C (51332) |
All conductor cross-sections, linear resistances, voltage classes, optical attenuations, breaking loads and air/seawater weights are taken directly from the engineering specifications for REF 32629, REF 37256, REF 50899, REF 51332, REF 37640, REF 43330, REF 59986, REF 55753, Type 2.1-TAU38 and Type 2.2-DAU17.
On REF 43330 (42 mm OD 3 kV Plough Umbilical), the cable interstices are filled with low-density insulating fluid (density 0.887), yielding a net positive buoyancy of -30 g/m in seawater despite an aluminum tape armor barrier and 15,000 daN fiber braid.
Static vehicle harness cables REF 59986 (1,000 V 3×1.0 mm² shielded power, IEC 60332-1 flame-retardant) and REF 55753 (600/250 V power, shielded pairs and 75 Ω coax) are designed for fixed wiring on ROV frames, underwater projectors and manipulator arms.
Standards
| Standard or specification | Application |
|---|---|
| IEC 60228 | Flexible and extra-flexible stranded bare, tinned and special-alloy conductors for dynamic ROV tethers and 3 kV trencher power cores. |
| IEC 60502-1 & IEC 60840 (insulation basis) | Cross-linked polyethylene (XLPE) and high-dielectric polyolefin insulation design for 1 kV to 3 kV subsea vehicle power cores. |
| IEC 60794-1-2 & ITU-T G.652 / G.651 | Singlemode 9/125 μm and multimode 62.5/125 μm optical fiber attenuation and mechanical proof-test performance in loose tubes and M-PAC metal tubes. |
| IEC 60332-1-2 | Flame propagation compliance on subsea equipment static power cabling (REF 59986). |
IEC 60794 Optical Fibre Cables Standard Series at IEC Webstore
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