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Product

25–30 year subsea cathodic protection reference & shunt cableDNV-RP-B401 / MIL-83420Ag/AgCl ±5 mV CP Reference25–30 Year Double SWA

DR-2 / DR-2 CD & V-String Double-Armored Subsea CP Monitoring CableDNV-RP-B401 / MIL-83420 · 300/500 V · 25–30 year subsea cathodic protection reference

DR-2 / DR-2 CD & V-String Double-Armored Subsea CP Monitoring Cable (DNV-RP-B401 / MIL-DTL-83420 Subsea CP Monitoring Standard) engineered for 300/500 V service across -30 °C to +80 °C (min. bend radius 10 × OD).

Water-resistant

Oil-resistant

Outdoor & humid

Approved

Configuration

Order designation: DR-2 Config A (Compact)
Outer Ø ≈: 10.4 mm
Net weight ≈: 155 kg/km
Tensile rating ≈: 4.5 kN
Core / stranding: Stranded tinned Cu (IEC 60228 / ASTM)

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: 300/500 V
Operating temp.: −30…+80 °C
Min. bend radius: 10 × OD
Core / conductor: 2×12/4×12 AWG Cu
Outer protection: Double SWA
Standard: DNV-RP-B401

Typical values for this cable type, based on DNV-RP-B401 / MIL-DTL-83420 Subsea CP Monitoring Standard — confirmed in the datasheet and quotation for your order.

Application fit

Is DR-2 / DR-2 CD & V-STRING right for your machine?

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: DR-2 / DR-2 CD & V-STRING (DNV-RP-B401 / MIL-DTL-83420 Subsea CP Monitoring Standard) featuring cp monitoring conductors (4×12 awg / 2×12 awg), epc insulation & copper/polyester shield and black hdpe jacket (or v-string polyester braid) (5-layer construction).

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	CP Monitoring Conductors (4×12 AWG / 2×12 AWG)	Annealed copper 3.3 mm² cores for Ag/AgCl cell, Zn cell & 1 m² current-density shunt
2	EPC Insulation & Copper/Polyester Shield	Ethylene-propylene copolymer insulation + EPC fillers + drain wire + Cu/Polyester tape
3	Extruded TPU Inner Bedding Jacket	Tough thermoplastic polyurethane inner jacket protecting shielded core
4	Double Galvanized Steel Wire Armor (2×SWA)	Two contra-helical layers of galvanized steel armor for conduit-free jacket clamping
5	Black HDPE Jacket (or V-String Polyester Braid)	Black HDPE jacket (Ø 14/22 mm; V-String uses MIL-DTL-83420 steel cord + Polyester braid)

DR-2 / DR-2 CD & V-STRING — Standard Subsea & Marine Execution

Built to DNV-RP-B401 / MIL-DTL-83420 Subsea CP Monitoring Standard with cp monitoring conductors (4×12 awg / 2×12 awg) and black hdpe jacket (or v-string polyester braid)

DR-2 / DR-2 CD & V-STRING — Custom Drum Length & Termination Kit

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

DR-2 / DR-2 CD & V-STRING — 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 DNV-RP-B401 / MIL-DTL-83420 Subsea CP Monitoring Standard. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage / transmission duty: 300/500 V (DNV-RP-B401 / MIL-DTL-83420 Subsea CP Monitoring Standard)
Core / conductor construction: CP Monitoring Conductors (4×12 AWG / 2×12 AWG) — Annealed copper 3.3 mm² cores for Ag/AgCl cell, Zn cell & 1 m² current-density shunt
Primary dielectric / buffering: EPC Insulation & Copper/Polyester Shield — Ethylene-propylene copolymer insulation + EPC fillers + drain wire + Cu/Polyester tape

Thermal

Continuous operating temperature: −30…+80 °C (subsea, marine & submersible duty)
Short-circuit / peak thermal rating: Verified thermal stability per DNV-RP-B401 / MIL-DTL-83420 Subsea CP Monitoring Standard
Storage & transport temperature: −40…+80 °C on export wooden/steel drum

Mechanical

Outer protection / armouring: Black HDPE Jacket (or V-String Polyester Braid) — Black HDPE jacket (Ø 14/22 mm; V-String uses MIL-DTL-83420 steel cord + Polyester braid)
Minimum bending radius: 10 × OD
Hydrostatic, tensile & crush duty: Double Galvanized Steel Wire Armor (2×SWA) — Two contra-helical layers of galvanized steel armor for conduit-free jacket clamping

Resistance

Hydrostatic pressure & water blocking: Engineered for continuous submersion and hydrostatic integrity per DNV-RP-B401 / MIL-DTL-83420 Subsea CP Monitoring Standard
Seawater, oil & chemical resistance: Resistant to seawater hydrolysis, hydraulic oils and abrasion per DNV-RP-B401 / MIL-DTL-83420 Subsea CP Monitoring Standard
RoHS & REACH compliance: RoHS 2 (2011/65/EU + 2015/863) & REACH SVHC compliant

Reference standards

Governing standard: DNV-RP-B401 / MIL-DTL-83420 Subsea CP Monitoring Standard
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: DR-2 / DR-2 CD & V-STRING
Sheath colour & metre marking: Continuous metre-marked black outer finish (Double SWA + Black HDPE)
Customs tariff (HS): 8544.49 / 8544.60 / 8544.70

Sizes

3 standard DR-2 / DR-2 CD & V-STRING subsea & marine configurations

Manufactured to DNV-RP-B401 / MIL-DTL-83420 Subsea CP Monitoring Standard 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
DR-2 / DR-2 CD & V-STRING Construction Schedule (−30…+80 °C)
DR-2 Config A (Compact)	4×2×24 AWG + 2×18 AWG (or 4C)	Stranded tinned Cu (IEC 60228 / ASTM)	10.4	155	4.5	85
DR-2 Config B (Standard)	4×2×20 AWG + 4×16 AWG (or 8C)	Stranded tinned Cu (IEC 60228 / ASTM)	13.3	265	9.6	110
DR-2 Config C (Heavy Hybrid)	8×2×20 AWG + 4×12 AWG (or 12C)	Stranded tinned Cu (IEC 60228 / ASTM)	16.6	420	18.5	140

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 DNV-RP-B401 / MIL-DTL-83420 Subsea CP Monitoring Standard.

Electrical, optical & thermal parameters
Configuration	Max. DC R₂₀ / Atten. Ω/km or dB/km	Rating / Impedance	Operating temp.
4×2×24 AWG + 2×18 AWG (or 4C)	28.40	300/500 V (45–100 Ω data)	−30…+80 °C
4×2×20 AWG + 4×16 AWG (or 8C)	10.70	300/500 V (45–100 Ω data)	−30…+80 °C
8×2×20 AWG + 4×12 AWG (or 12C)	5.40	300/500 V (High-Power Hybrid)	−30…+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 (DNV-RP-B401 / MIL-DTL-83420 Subsea CP Monitoring Standard)	DC resistance at 20 °C / optical attenuation and outer diameter within DNV-RP-B401 / MIL-DTL-83420 Subsea CP Monitoring Standard tolerances	Every manufactured drum length
High-voltage dielectric & insulation resistance test (DNV-RP-B401 / MIL-DTL-83420 Subsea CP Monitoring Standard)	Zero dielectric breakdown and verified insulation resistance for 300/500 V rating	Every manufactured drum length
Sample tests
Hydrostatic pressure, water-blocking & mechanical endurance qualification (DNV-RP-B401 / MIL-DTL-83420 Subsea CP Monitoring Standard)	Verified submersion integrity, tensile load and thermal stability across −30…+80 °C	Type qualification & periodic lot audit

Inspection certificate

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

Product approvals

DNV-RP-B401 / MIL-83420 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 DR-2 / DR-2 CD & V-STRING DNV-RP-B401 / MIL-83420 300/500 V 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

PDFDR-2 / DR-2 CD & V-String Double-Armored Subsea CP Monitoring Cable – technical datasheet3 sizes · construction, technical data, approvals XLSXDR-2 / DR-2 CD & V-STRING 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 DR-2 / DR-2 CD & V-STRING (DR-2 / DR-2 CD & V-String Double-Armored Subsea CP Monitoring Cable)?

DR-2 / DR-2 CD & V-STRING (DR-2 / DR-2 CD & V-String Double-Armored Subsea CP Monitoring Cable) is manufactured in accordance with DNV-RP-B401 / MIL-DTL-83420 Subsea CP Monitoring Standard for 300/500 V service over -30 °C to +80 °C. Its 5-layer construction comprises cp monitoring conductors (4×12 awg / 2×12 awg), epc insulation & copper/polyester shield and black hdpe jacket (or v-string polyester braid).

What is the minimum bending radius and operating temperature range for DR-2 / DR-2 CD & V-STRING?

The minimum bending radius for DR-2 / DR-2 CD & V-STRING is 10 × OD across its continuous operating temperature range of -30 °C to +80 °C, ensuring mechanical and dielectric reliability in subsea, marine and submersible service.

How are the concentric layers of DR-2 / DR-2 CD & V-STRING arranged from inside to outside?

From inside to outside, the construction sequence is: (01) CP Monitoring Conductors (4×12 AWG / 2×12 AWG) — Annealed copper 3.3 mm² cores for Ag/AgCl cell, Zn cell & 1 m² current-density shunt; (02) EPC Insulation & Copper/Polyester Shield — Ethylene-propylene copolymer insulation + EPC fillers + drain wire + Cu/Polyester tape; (03) Extruded TPU Inner Bedding Jacket — Tough thermoplastic polyurethane inner jacket protecting shielded core; (04) Double Galvanized Steel Wire Armor (2×SWA) — Two contra-helical layers of galvanized steel armor for conduit-free jacket clamping; (05) Black HDPE Jacket (or V-String Polyester Braid) — Black HDPE jacket (Ø 14/22 mm; V-String uses MIL-DTL-83420 steel cord + Polyester braid).

What factory test certificates are supplied with DR-2 / DR-2 CD & V-STRING?

Every production drum of DR-2 / DR-2 CD & V-STRING undergoes routine conductor resistance/continuity, high-voltage dielectric and dimensional testing per DNV-RP-B401 / MIL-DTL-83420 Subsea CP Monitoring Standard, 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

DR-2 / DR-2 CD & V-String Double-Armored Subsea CP Monitoring Cable

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