The screened PUR underwater control cable is a configurable low-voltage control and instrumentation cable for subsea assemblies where compact multi-core construction and an overall foil screen are required. Reference designs cover 3-, 7- and 21-core layouts, 300 V or 600 V operating voltage, and conductor sizes from 0.50 mm² to 5.20 mm². TEBAOFLEX reviews the complete installation before confirming the final construction, including water depth, pressure, cable length, termination method, bend requirement and whether the cable is static or moving.
Product Overview
This cable family combines stranded tinned-copper conductors, application-specific PP or Tefzel core insulation, an overall aluminum/polyester foil screen, a tinned-copper drain wire and a black polyurethane outer jacket. The screen and drain wire provide a defined termination path for interference control, while fillers and binders maintain a stable round profile.
The product is intended for engineered subsea control, sensor and instrumentation assemblies. It is not automatically a complete pressure-rated connector system: connector compatibility, moulding, water blocking, hydrostatic pressure and depth rating must be confirmed for each project.
Cable Construction
- Conductors: stranded tinned copper in verified reference sizes from 0.50 mm² to 5.20 mm².
- Core insulation: polypropylene for the 3-core and 21-core references; Tefzel for the 7-core reference.
- Fillers and binder: used as required to maintain roundness; the 21-core reference includes three fillers and a clear polyester binder.
- Overall screen: aluminum/polyester foil or aluminum/Mylar construction in contact with a tinned-copper drain wire.
- Outer jacket: black polyurethane with nominal reference wall thicknesses from 1.27 mm to 1.70 mm.
Available Reference Configurations
The following data is based on the supplied construction references and is presented without third-party product names or model numbers. It defines configurations that TEBAOFLEX can review for manufacture; the approved production drawing and inspection plan will control the final order.
| Configuration | Conductor | Core Insulation | Screen and Drain | PUR Jacket | Nominal Diameter | Operating Voltage |
|---|---|---|---|---|---|---|
| 3 × 5.20 mm² (#10 AWG) | Stranded tinned copper | PP, approx. 0.61 mm wall | Aluminum/polyester foil with 1.50 mm² tinned-copper drain wire | Black, approx. 1.70 mm wall | 12.70 mm | 600 V |
| 3 × 1.50 mm² (#16 AWG) | Stranded tinned copper | PP, approx. 0.35 mm wall | Aluminum/polyester foil with #20 AWG drain wire | Black, approx. 1.27 mm wall | 7.24 mm | 300 V |
| 3 × 0.80 mm² (#18 AWG) | Stranded tinned copper | PP, approx. 0.35 mm wall | Aluminum/polyester foil with #20 AWG drain wire | Black, approx. 1.27 mm wall | 6.58 mm | 300 V |
| 7 × 0.50 mm² (#20 AWG) | Stranded tinned copper | Tefzel | Overall aluminum/Mylar foil with stranded drain wire | Black, approx. 1.65 mm wall | 8.00 mm | 600 V |
| 21 × 0.52 mm² (#20 AWG) | Stranded tinned copper | PP | Polyester binder, aluminum/polyester foil and #20 AWG drain wire | Black, approx. 1.52 mm wall | 14.70 ± 0.25 mm | 300 V |
Additional Data for the 21-Core Reference
| Parameter | Reference Value | Scope |
|---|---|---|
| Minimum bending radius | 152 mm | 21 × 0.52 mm² configuration |
| Weight in air | 259 kg/km | 21 × 0.52 mm² configuration |
| Weight in water | 90 kg/km | 21 × 0.52 mm² configuration |
| Maximum operating temperature | +80°C | 21 × 0.52 mm² configuration |
| DC conductor resistance | 29 Ω/km | 21 × 0.52 mm² configuration |
Applications and Engineering Scope
Typical projects include low-voltage control and monitoring links for ROV equipment, subsea sensors, underwater instrumentation, marine test systems and connector or penetrator assemblies. The cable can also be reviewed as a custom lead for compact wet-environment equipment where a screened multi-core PUR construction is required.
For related TEBAOFLEX options, compare the PUR 4 × 18 AWG ROV signal cable, the 4-core PUR waterproof cable and the broader PUR multi-core control cable. You can also browse the submersible and underwater cable range.
Information Required for a Quote
Send TEBAOFLEX the following information so engineering can confirm conductor sizing, shield termination, jacket construction and manufacturing documentation:
- required core count, conductor cross-section and operating voltage;
- overall cable length and allowable outer diameter;
- water depth, hydrostatic pressure and freshwater or seawater exposure;
- static, flexing, tethered or reeled operating duty;
- minimum bending radius and tensile load;
- connector, penetrator, moulding or free-end termination requirements;
- required standards, tests, inspection documents and cable marking.
Frequently Asked Questions
Which conductor configurations are available?
The supplied reference range includes 3-core designs at 0.80 mm², 1.50 mm² and 5.20 mm², a 7-core design at 0.50 mm², and a 21-core design at 0.52 mm². TEBAOFLEX can review adjacent constructions after the electrical, dimensional and mechanical requirements are defined.
How should 300 V and 600 V options be selected?
Voltage selection must follow the complete circuit and system design rather than core count alone. Provide the working voltage, test requirement, conductor loading and applicable standard so TEBAOFLEX can confirm insulation thickness and the approved production construction.
Does the foil screen provide mechanical armour?
No. The aluminum/polyester foil screen and drain wire are included for electrical screening and termination. They do not replace tensile members or armour. If the cable will carry mechanical load or operate as a tether, the strength and armour requirements must be engineered separately.
Is a depth or pressure rating included?
No universal depth rating is claimed from the cable data alone. The cable, water blocking, moulded termination, connector and complete assembly must be evaluated together. State the required water depth and pressure during the quotation stage.
Request a TEBAOFLEX Cable Review
TEBAOFLEX supports custom conductor layouts, insulation choices, shielding, PUR jacket construction, marking and project documentation for special cable orders. Send your cable requirements to request an engineering review and quotation, or visit the TEBAOFLEX special cable manufacturer homepage for additional product families.
