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Product

CEI 20-13 UG7OG7KNR/RG7OG7KNR cableCEI 20-13 & CEI 20-22 IIUG7OG7KNR (Cl. 2) & RG7OG7KNR (Cl. 5)0.6/1 kV · HEPR (G7) + Cu Screen + NR

UG7OG7KNR / RG7OG7KNR HEPR-Insulated Screen-Armoured IndustrialItalian CEI 20-13 0.6/1 kV HEPR (G7) copper screen-armoured (K) neoprene (NR) power

Heavy-duty Italian petrochemical, refinery and industrial power cable (UG7OG7KNR with Class 2 copper / RG7OG7KNR with flexible Class 5 copper) built to CEI 20-13 with +90 °C High-Modulus EPR (G7 / HEPR) insulation, elastomeric inner sheath, concentric.

EMC screen
Flame-retardant
Oil-resistant
Approved
Order designation
RG7OG7KNR 3×35/16 mm²
Outer Ø ≈
30.2 mm
Copper weight
1,162 kg/km
Total weight ≈
1,740 kg/km
Ampacity (air)
158 A
All sizes (9)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Italian std.
CEI 20-13
CEI UNEL 35375 · IEC 60502-1
Rated voltage
0.6/1 kV
Umax = 1.2 kV AC / 1.5 kV DC
Conductor
U (Cl.2) / R
U = rigid Class 2 · R = flex Cl.5
Insulation (G7)
HEPR (+90 °C)
high-modulus EPR · +250 °C SC
Screen-armour
Concentric Cu
copper wires/braid over inner G7
Outer sheath
Neoprene (NR)
polychloroprene · CEI 20-22 II

Typical values for this cable type, based on CEI 20-13 / CEI UNEL 35375 / CEI 20-22 II / IEC 60502-1 — confirmed in the datasheet and quotation for your order.

Application fit

Is UG7OG7KNR / RG7OG7KNR right for your machine?

Specified across Italian and Mediterranean oil refineries, petrochemical complexes, ATEX Zone 1/2 hazardous areas, steel mills and offshore platforms where the cable requires both a metallic earth-fault screen ('K') and a hydrocarbon/oil-resistant Polychloroprene ('NR') outer sheath.

Fixed installation

Suitable

Installed in refinery pipe racks, buried chemical trenches and ATEX hazardous-area cable trays (CEI 64-2 / EN 60079-14).

Offshore platform & shipboard deck trays

Suitable

Polychloroprene ('NR') elastomer jacket withstands aliphatic/aromatic hydrocarbons, lubricating oils, weathering and seawater.

VFD inverter to AC motor screened feeder

Suitable

Concentric copper screen ('K') provides a 360° low-impedance return path for VFD common-mode currents and instant earth-fault tripping.

Typical machinesOil Refineries, LNG Terminals & Petrochemical PlantsATEX Hazardous Area Zone 1 & Zone 2 Power DistributionSteel Mills, Cement Plants & Heavy ManufacturingVFD Motor Feeders in Corrosive/Oily Environments

Construction

Layer by layer

Shown: RG7OG7KNR 3×35/16 mm² 0.6/1 kV with Class 5 flexible annealed copper conductors (R), High-Modulus EPR (G7) core insulation, elastomeric inner sheath (OG7), concentric copper wire/tape screen-armour (K) and black Polychloroprene (NR) outer sheath.

12345
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Stranded (U = Class 2) or Flexible (R = Class 5)CEI EN 60228 Class 2 ('U' in UG7OG7KNR) or Class 5 ('R' in RG7OG7KNR) annealed copperAllows choice between rigid tray termination (U) and tight-bend equipment hookup (R)
2High-Modulus Ethylene Propylene Rubber (G7 / HEPR)CEI 20-11 Type G7 cross-linked hard-grade HEPR (+90 °C continuous, +250 °C short-circuit)Combines the high dielectric modulus of XLPE with the moisture and thermal-shock resilience of rubber
3Extruded elastomeric inner sheath (OG7)Vulcanised elastomeric inner covering over the laid-up coresProvides a circular, moisture-proof bedding under the metallic screen
4Concentric copper wire / braid screen-armour (K)Helical copper wires with counter-helix copper tape (or tinned-copper braid) over innerGuarantees immediate earth-fault protection in ATEX zones and 360° EMC screening
5Polychloroprene / Neoprene outer sheath (NR)Heavy-duty cross-linked Polychloroprene compound (CEI 20-22 II / IEC 60332-3-22 flameSuperior resistance to refinery oils, greases, chemical splashes, ozone and abrasion

RG7OG7KNR (Class 5 Flexible Copper)

Flexible Class 5 ('R') conductor execution for vibrating motors, skids and tight refinery bends

UG7OG7KNR (Class 2 Stranded Copper)

Rigid Class 2 ('U') conductor execution for long fixed pipe-rack and underground trench runs

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on CEI 20-13 / CEI UNEL 35375 / CEI 20-22 II / IEC 60502-1. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage (U₀/U)
0.6/1 kV AC (Umax = 1.2 kV AC / 1.5 kV DC)
Routine AC dielectric test voltage
3.5 kV AC rms for 5 minutes + IR ≥ 500 MΩ·km
Max. conductor DC resistance @ 20 °C
Per CEI EN 60228 Class 2 (U) or Class 5 (R)

Thermal

Operating temperature range
−25 °C (−35 °C fixed) to +90 °C conductor · +250 °C short-circuit (5 s)
Thermal cycling & overload stability
Verified thermal ageing and short-circuit withstand per standard

Mechanical

Minimum bending radius
10 × OD (RG7OG7KNR Class 5) · 12 × OD (UG7OG7KNR Class 2)
Installation & mechanical integrity
Engineered for industrial pulling, routing and support cleat loads

Resistance

Bunched vertical flame retardance
CEI 20-22 II & IEC 60332-3-22 Cat A non-fire-propagating
Oil, hydrocarbon & chemical resistance
Polychloroprene (NR) jacket resists mineral oils, diesel, acids & ozone

Reference standards

Governing Italian & IEC standards
CEI 20-13, CEI UNEL 35375, CEI 20-22 II & IEC 60502-1
Factory QA & material compliance
EN 10204 3.1 routine test certificate · RoHS 2 & REACH compliant

Identification

Italian code breakdown
U/R (Cl.2/5 Cu) + G7 (HEPR) + OG7 (inner sheath) + K (Cu screen) + NR
Customs tariff (HS)
8544.49

Sizes

9 standard UG7OG7KNR & RG7OG7KNR 0.6/1 kV industrial cable sizes

Class 5 flexible (RG7OG7KNR) and Class 2 stranded (UG7OG7KNR) HEPR/copper-screen/neoprene cables.

Dimensions, weights & free-air ampacity
Order designationPhase / ScreenVoltageOuter Ø ≈
mm		Copper
kg/km		Weight ≈
kg/km		In air 30 °C
A		Min. bend R
mm		Enquiry
RG7OG7KNR — Class 5 Flexible Copper HEPR Screen-Armoured Neoprene Cables
RG7OG7KNR 3×2.5/2.5 mm²3×2.5 / 2.5 mm²0.6/1 kV14.89631032148
RG7OG7KNR 3×6/6 mm²3×6 / 6 mm²0.6/1 kV18.223051554182
RG7OG7KNR 3×16/10 mm²3×16 / 10 mm²0.6/1 kV23.855798098238
RG7OG7KNR 3×35/16 mm²3×35 / 16 mm²0.6/1 kV30.21,1621,740158302
RG7OG7KNR 3×70/35 mm²3×70 / 35 mm²0.6/1 kV38.62,3523,190240386
RG7OG7KNR 3×120/70 mm²3×120 / 70 mm²0.6/1 kV47.54,1285,180340475
UG7OG7KNR — Class 2 Stranded Copper HEPR Screen-Armoured Neoprene Cables
UG7OG7KNR 4×10/10 mm²4×10 / 10 mm²0.6/1 kV22.448089072224
UG7OG7KNR 4×50/25 mm²4×50 / 25 mm²0.6/1 kV36.82,1603,120185368
UG7OG7KNR 4×95/50 mm²4×95 / 50 mm²0.6/1 kV46.24,1285,420280462
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Full range covers 1 to 24 cores from 1.5 mm² to 240 mm² in both UG7OG7KNR and RG7OG7KNR.

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
3.5 kV AC 5-min dielectric withstand, screen continuity & conductor R_DC testZero breakdown; phase and concentric copper screen resistance verifiedEvery drum
Sample tests
CEI 20-22 II vertical bunched flame & Neoprene (NR) hydrocarbon immersion testPasses Category A bunched flame test and ASTM/IRM oil immersionPeriodic audit

Inspection certificate

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

Product approvals

CEI 20-13 & CEI UNEL 35375 CompliantCEI 20-22 II / IEC 60332-3-22 Cat A Flame RetardantATEX Zone 1 / Zone 2 (EN 60079-14) Suitable

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX UG7OG7KNR (or RG7OG7KNR) 0.6/1kV <size> CEI 20-13 CEI 20-22 II CE
Delivery form
Non-returnable fumigated wooden or steel drums
Standard lengths
250 m · 500 m · 1000 m standard drums
MOQ
250 m (stock sizes) · 500 m (custom)
Lead time
3–5 weeks ex-works
Incoterms
EXW, FCA, FOB, CIF, DAP

Technical documents

Downloads

PDFUG7OG7KNR / RG7OG7KNR HEPR-Insulated Screen-Armoured Industrial – technical datasheet9 sizes · construction, technical data, approvalsXLSXUG7OG7KNR / RG7OG7KNR spec data (Excel)All 9 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.

How do you decode the Italian CEI UNEL 35011 designation UG7OG7KNR / RG7OG7KNR?
'U' = Class 2 rigid stranded copper conductor (or 'R' = Class 5 flexible copper conductor); 'G7' = High-Modulus Ethylene Propylene Rubber (HEPR, +90 °C) core insulation; 'OG7' = extruded elastomeric inner sheath over the cabled cores; 'K' = concentric copper wire/tape screen-armour; and 'NR' = Polychloroprene (Neoprene) oil- and flame-resistant outer sheath.
Why do oil refineries specify UG7OG7KNR / RG7OG7KNR instead of PVC-sheathed FG7OH2R / FG16OR16?
Standard PVC outer sheaths ('R' or 'R16') swell, leach plasticiser and crack when exposed to aromatic hydrocarbons, crude oil, diesel and chemical solvents in refinery pipe trenches. The cross-linked Polychloroprene ('NR') outer sheath of UG7OG7KNR / RG7OG7KNR is chemically cross-linked to resist oils, hydrocarbons and weathering while the 'K' copper screen satisfies ATEX hazardous-area earth-fault rules.
When should I choose RG7OG7KNR over UG7OG7KNR?
Both have identical insulation, copper screen and neoprene outer jacket. Choose RG7OG7KNR (Class 5 flexible copper) for motor connections, skid wiring and tight tray bends; choose UG7OG7KNR (Class 2 stranded copper) for long straight feeder runs.
What factory routine tests and certificates are supplied with UG7OG7KNR / RG7OG7KNR?
Every production drum of UG7OG7KNR / RG7OG7KNR undergoes 100 % conductor DC resistance measurement at 20 °C, high-voltage AC/DC dielectric withstand testing, and dimensional verification per CEI 20-13 / CEI UNEL 35375 / CEI 20-22 II / IEC 60502-1, supplied with an EN 10204 3.1 inspection certificate.

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UG7OG7KNR / RG7OG7KNR HEPR-Insulated Screen-Armoured Industrial

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