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Product

power connection cable seriesIEEE 1018 / 1019 Round ESP3 kV · 4 kV · 5 kV SymmetricalHigh Decompression Hoop Strength

Round Electrical Submersible Pump CableIEEE 1018 / 1019 3–5 kV round 3-conductor interlocked-armoured downhole ESP cable

Round Electrical Submersible Pump (ESP) Cable (3 kV, 4 kV & 5 kV) engineered per IEEE Std 1018, IEEE Std 1019 and API RP 11S5/11S6 with three cabled solid/compacted copper conductors (#6 AWG to #1/0 AWG), polypropylene or high-temp.

360° Hoop Gas Containment
35 MPa Downhole Crude/Brine
Balanced 3-Phase Reactance
IEEE 1018 / API 11S5
Order designation
ESP-RND 4kV #4 EPDM
Outer Ø ≈
26.9 mm
Weight ≈
1,680 kg/km
Conductor DC R
0.863 Ω/km
Nominal current
100 A
All sizes (6)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Standards
IEEE 1018 / 1019
& API RP 11S5 / 11S6
Voltage classes
3 kV / 4 kV / 5
Balanced 3-phase geometry
Conductor range
#6 to #1/0 AWG
Solid or compacted Cu
Temp. ratings
+96 to +204 °C
PP/NBR (+96°C) · EPDM (+204°C)
Round outer Ø
22.5 to 36.5 mm
Fits standard wellhead pack-offs
Gas resistance
360° hoop armour
Superior decompression survival

Typical values for this cable type, based on IEEE Std 1018 / IEEE Std 1019 / API RP 11S5 / 11S6 — confirmed in the datasheet and quotation for your order.

Application fit

Is Round Electrical Submersible Pump Cable right for your machine?

Preferred main-run downhole power cable from the surface wellhead penetrator down to the flat crossover splice above the ESP assembly—providing superior 360° radial hoop strength against rapid gas decompression and symmetrical 3-phase impedance.

Drilling jumbo & rotary mast feed

Suitable

Cylindrical outer profile seals directly inside standard elastomeric wellhead feedthrough pack-offs and tubing hangers.

Immersion & wet locations

Suitable

Pressure-extruded common Nitrile/EPDM jacket fills all cabled core valleys, eliminating void space where high-pressure gas could collect.

VFD inverter to AC motor screened feeder

Suitable

Symmetrical 3-core planetary lay equalizes phase-to-phase inductance and capacitance over 2,000–4,000 m VSD runs.

Energy chain / drag chain

Not suitable

Interlocked-steel-strip armoured oilfield downhole cable; not for machinery drag chains.

Use PUR-HF Drag-Chain Cable
Typical machinesVertical & Moderately Deviated Oil Well ESPsHigh Gas-to-Oil Ratio (GOR) Gassy WellsDeep Geothermal & Water-Source Injection WellsOffshore Platform & Subsea ESP String Upper RunsCavern Storage & Mine Dewatering Booster Pumps

Construction

Layer by layer

Round Electrical Submersible Pump Cable showing 3 helically cabled solid/compacted tinned copper conductors, Polyimide/FEP + EPDM (or PP) primary insulation, high-pressure valley-filling Nitrile/EPDM common barrier jacket (or individual lead sheaths), and cylindrical interlocked galvanized steel / Monel strip armour.

1234
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
13 × Helically cabled solid/compacted copper conductorsSolid (#6–#1 AWG) or 7/19-wire compacted/seal-stranded bare or lead-alloy-tinned copper per ASTM B3 / IEEE 1018Planetary 3-core lay balances phase impedance and heat dissipation
2PP (IEEE 1019) or High-Temp EPDM (IEEE 1018) insulationCopolymer Polypropylene (+96 °C) or high-modulus oil-resistant EPDM rubber (+140 °C to +204 °C) with optional Polyimide/FEP tape75 mil (3 kV) or 90–115 mil (4–5 kV) wall thickness
3Pressure-extruded Nitrile or EPDM common barrier jacketHigh-durometer Oil-Resistant Nitrile (NBR, +121 °C) or High-Modulus EPDM (+177/+204 °C) extruded under high pressure to fill 100 % of core intersticesZero internal air voids prevents gas pocket accumulation
4Cylindrical interlocked galvanized steel / Monel armourHelically formed 20 mil (0.51 mm) or 25 mil (0.64 mm) Galvanized Steel, 316L Stainless or Monel 400 interlocked stripCircular arch geometry acts as a continuous 360° hoop pressure vessel

ESP-RND-EPDM-140 / 177 (3–5 kV EPDM/EPDM)

Round 3-core EPDM-insulated, high-modulus EPDM-jacketed galvanized steel armoured ESP cable (+140 °C / +177 °C)

ESP-RND-PP-96 (3–4 kV PP/Nitrile)

IEEE 1019 round 3-core polypropylene-insulated, nitrile-jacketed galvanized steel armoured ESP cable (+96 °C)

ESP-RND-LEAD-204 (4–5 kV Lead Barrier)

Round 3-core EPDM + individual lead-sheathed cores + galvanized/Monel armour for sour H₂S wells (+204 °C)

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on IEEE Std 1018 / IEEE Std 1019 / API RP 11S5 / 11S6. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage classes
3 kV · 4 kV · 5 kV AC phase-to-phase
Routine DC hi-pot test
22 kV DC (3 kV) · 27 kV DC (4 kV) · 33–35 kV DC (5 kV) for 5 min
Max. DC resistance @ 20 °C
1.37 Ω/km (#6) · 0.863 Ω/km (#4) · 0.541 Ω/km (#2) · 0.341 Ω/km (#1/0)
Symmetrical reactance
≈ 0.115 to 0.135 Ω/km @ 60 Hz (balanced across all 3 phases)

Thermal

PP / Nitrile (IEEE 1019)
-40 °C to +96 °C (+205 °F) bottomhole rating
EPDM / EPDM (IEEE 1018)
-40 °C to +140 °C / +177 °C (+350 °F) bottomhole rating
EPDM / Lead (IEEE 1018)
-40 °C to +204 °C (+400 °F) sour/thermal rating

Mechanical

Nominal outer diameter
22.9 mm (#6 AWG) to 34.8 mm (#1/0 AWG)
Min. sheave diameter
1,100 mm to 1,400 mm (44" to 54" wellhead sheave)
Radial hoop decompression
Highest gas-decompression resistance of any ESP geometry

Resistance

Gas decompression (RGD)
Void-free extruded jacket + 360° hoop armour prevents blistering
Crude oil & brine
Resistant to aromatic crude, completion brine & scale inhibitors
Hydrostatic pressure
Up to 35–42 MPa (5,000–6,000 psi)

Reference standards

ESP cable standards
IEEE Std 1018 (EPDM) & IEEE Std 1019 (PP)
Recommended practices
API RP 11S5 (Application) & API RP 11S6 (Testing)
RoHS & REACH
Industrial oilfield downhole compliant

Identification

Phase core identification
1, 2, 3 colour ridges / numbers on insulated phase cores
Customs tariff (HS)
8544.6010
Delivery form
Continuous splice-free lengths on heavy steel oilfield drums

Sizes

6 standard 4 kV / 5 kV Round ESP Cable (#6 AWG to #1/0 AWG) configurations

Conductor size, insulation/jacket system, nominal outer diameter, weight and current rating.

Round outer Ø, weight & ratings
Order designationAWG, voltage & insulationOuter Ø ≈
mm		Weight ≈
kg/km		Max. DC R
Ω/km		Nom. rating
A		Enquiry
4 kV +177 °C EPDM/EPDM Round ESP
ESP-RND 4kV #6 EPDM3 × #6 AWG (13.3 mm²) · 4 kV EPDM24.41,2901.37075
ESP-RND 4kV #4 EPDM3 × #4 AWG (21.2 mm²) · 4 kV EPDM26.91,6800.863100
ESP-RND 4kV #2 EPDM3 × #2 AWG (33.6 mm²) · 4 kV EPDM30.22,2900.541135
ESP-RND 5kV #1 EPDM3 × #1 AWG (42.4 mm²) · 5 kV EPDM33.52,7800.430155
ESP-RND 5kV #1/0 EPDM3 × #1/0 AWG (53.5 mm²) · 5 kV EPDM35.83,3400.341180
3 kV +96 °C PP/Nitrile Round ESP
ESP-RND 3kV #4 PP/NBR3 × #4 AWG (21.2 mm²) · 3 kV PP/NBR24.81,5100.86395
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Round ESP cable is typically spliced to a Flat ESP cable or directly to a Motor Lead Extension (MLE) 15–30 m above the pump intake.

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.

  1. ConductorClass 5 stranding
  2. Spark test100 % in-line
  3. Lay-upCores, earth, fillers
  4. SheathingInner, braid / screen, outer
  5. Electrical testsAC voltage, resistance
  6. DimensionsOD, wall thickness
  7. Inspection documents & dispatchDrum & dispatch
Testing & inspectionTest value / referenceFrequency
Routine tests
100 % 22–35 kV DC water-tank hi-pot, IR & TDR sweepZero breakdown for 5 min, balanced phase leakage current and IR ≥ 1,500 MΩ·kmEvery manufactured reel
Sample tests
Hot oil swell & elastomer physical property retentionMeets IEEE 1018 / 1019 tensile, modulus and swell limitsPer production lot
Rapid Gas Decompression (RGD) cyclic autoclave testPasses 5 decompression cycles from 25 MPa at +150/+177 °C without blisteringType qualification

Inspection certificate

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

Product approvals

IEEE Std 1018 & IEEE Std 1019API RP 11S5 & API RP 11S6ISO 9001 Oilfield QA

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

Stamped armour & reel plate: TEBAOFLEX ROUND ESP CABLE IEEE 1018/1019
Delivery form
Fumigated wooden drums or steel export reels
Standard lengths
500 m · 1000 m (or custom cut lengths)
MOQ
100 m (standard) · 500 m (custom)
Lead time
2–4 weeks ex-works
Incoterms
EXW, FOB, CIF, DAP

Technical documents

Downloads

PDFRound Electrical Submersible Pump Cable – technical datasheet6 sizes · construction, technical data, approvalsXLSXRound Electrical Submersible Pump Cable spec data (Excel)All 6 sizes with dimensions and data, for your BOM or quotation
Revision
2026-10-20
Updated
2026-10-20

FAQ

Questions engineers ask first

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

Why does Round ESP Cable survive rapid gas decompression (RGD) better than unbraided Flat ESP Cable?
When dissolved wellbore gas inside the insulation expands during depressurization, it exerts radial outward pressure in all directions. A cylindrical interlocked steel armour acts like a circular pipe hoop under uniform tension, whereas the flat sides of a flat armour can bow outward unless internal core braids or lead sheaths constrain the cores.
Why does Round ESP Cable also simplify wellhead pressure sealing?
Wellhead surface hangers and pack-off glands seal far more reliably around a single smooth cylindrical core/jacket profile (or three cylindrical cores stripped of armour) than around a rectangular geometry.
Why is a flat Motor Lead Extension (MLE) still needed at the bottom of a Round ESP Cable string?
The ESP centrifugal pump, gas separator and seal-chamber housings have a much larger outer diameter than the production tubing above them, leaving only 10–14 mm of radial gap inside the well casing. The Round ESP cable terminates above the pump intake into a low-profile flat MLE (8.5–12 mm high) that runs past the pump and plugs into the motor pothead.
What is 'seal-stranded' compacted copper conductor?
For #2, #1 and #1/0 AWG where a single solid rod is stiff, 7 or 19 copper wires are compacted and encapsulated with an elastomeric/silicone strand-blocking sealant so high-pressure gas cannot migrate up the spaces between individual copper strands.

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Round Electrical Submersible Pump Cable

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