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Product

power connection cable seriesCEI 20-13 RG7H1R+105 °C G7 HEPR Insulation8.7/15 kV · 12/20 kV · 18/30 kV

RG7H1R Single-Core HEPR-Insulated MV CableCEI 20-13 +105 °C high-modulus G7 HEPR single-core screened MV power cable

RG7H1R Single-Core HEPR-Insulated Medium-Voltage Cable (6/10 kV, 8.7/15 kV, 12/20 kV & 18/30 kV; 25 mm² to 630 mm²) manufactured to Italian standard CEI 20-13, CEI UNEL 35375 and IEC 60502-2—combining Class 2 compacted circular red.

CEI 20-13 / IEC 60502-2
+105 °C Continuous G7 HEPR
Direct Burial, Duct & Tray
H1 16 mm² Copper Screen
Order designation
RG7H1R 1×95/16 12/20kV
Conductor / screen
95 mm² Cl.2 Cu + 16 mm² Cu screen
Outer Ø ≈
28.2 mm
Weight ≈
1,410 kg/km
Ampacity (air 30°C)
362 A
All sizes (6)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Standards
CEI 20-13 / UNEL
& IEC 60502-2 MV Power
Voltage classes
8.7/15 to 18/30
Also 3.6/6 kV & 6/10 kV
Cross-sections
1 × 25 to 630 mm
Class 2 compacted red Cu ('R')
Insulation
G7 HEPR (+105 °C
High-modulus EPR (+250 °C SC)
Metallic screen
H1 (≥ 16 mm² Cu)
Copper tape or concentric wire
Outer sheath
Red PVC Type Rz
CEI 20-22 II / IEC 60332-3

Typical values for this cable type, based on CEI 20-13 / IEC 60502-2 / CEI UNEL 35375 — confirmed in the datasheet and quotation for your order.

Application fit

Is RG7H1R right for your machine?

The classic Italian CEI 20-13 single-core medium-voltage cable for primary distribution substations, MV/LV transformer cabins, industrial plants and underground utility rings—offering a +105 °C continuous rating (+15 °C higher than standard XLPE).

Fixed installation

Suitable

Installed in trefoil or flat formation on industrial cable trays, inside underground ducts, in masonry trenches or directly buried in.

Switchgear & control cabinet wiring

Suitable

High-modulus G7 HEPR insulation allows reduced wall thickness (e.g., 4.5 mm at 12/20 kV vs 5.5 mm for standard EPR) and +105 °C.

Immersion & wet locations

Suitable

G7 HEPR elastomer exhibits inherent immunity to water-treeing in damp underground conduits compared to unjacketed standard XLPE.

Motorised monospiral reel

Not suitable

Class 2 fixed installation MV cable; for flexible MV jumpers use (N)TMCGC11Y or NTMCWÖU.

Use Flexible (N)TMCGC11Y
Typical machines15 kV / 20 kV / 30 kV Industrial Substation FeedersEnel / Utility MV/LV Secondary Cabin ConnectionsSolar & Wind Farm Collector Substation MV RingsCement, Steel, Paper & Petrochemical PlantsUnderground Duct & Direct-Buried MV Distribution

Construction

Layer by layer

RG7H1R Single-Core MV Cable showing Class 2 compacted annealed red copper conductor ('R'), extruded inner semiconducting layer, +105 °C high-modulus G7 HEPR insulation, strippable outer semiconducting screen, helically applied bare copper tape/wire screen ('H1', ≥ 16 mm²), and red flame-retardant PVC ('R', Type Rz) outer sheath.

12345
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Class 2 compacted circular red copper conductor ('R')Stranded compacted annealed plain copper ('R' = Rame cordato rotondo compatto) per CEI EN 60228 Class 2 (25 to 630 mm²)Smooth compacted contour for void-free inner semiconducting extrusion
2Triple-extruded inner & outer semiconducting stress screensCross-linked semiconducting elastomer bonded to conductor and cold-strippable outer semiconducting layer over G7 dielectricPeels cleanly for fast MV cold-shrink / heat-shrink termination
3+105 °C G7 High-Modulus HEPR dielectric insulationHard-grade Ethylene Propylene Rubber compound Type G7 per CEI 20-11 (+105 °C continuous, +140 °C overload, +250 °C short-circuit)Higher elastic modulus and dielectric strength allows compact MV wall thickness
4H1 Metallic copper earth screen (≥ 16 mm²)Helically applied overlapped annealed red copper tape (0.15 mm) or concentric copper wires ('H16' = 16 mm² nominal geometric section)Safely carries single-phase-to-earth fault currents per CEI 11-17
5Red flame-retardant PVC outer sheath ('R', Type Rz)Lead-free flame-retardant polyvinyl chloride compound Type Rz per CEI 20-11 in Red (RAL 3000)Passes CEI 20-22 II / IEC 60332-3-22 Cat A bunched vertical flame test

RG7H1R 8.7/15 kV (1×25/16 to 1×630/16 mm²)

8.7/15 kV (Umax 17.5 kV, 3.6 mm G7 wall) single-core MV cable for 15 kV Italian & international utility networks

RG7H1R 12/20 kV (1×35/16 to 1×630/16 mm²)

12/20 kV (Umax 24 kV, 4.5 mm G7 wall) single-core MV cable for 20 kV industrial distribution and renewable substations

RG7H1R 18/30 kV (1×50/16 to 1×630/16 mm²)

18/30 kV (Umax 36 kV, 6.5 mm G7 wall) single-core MV cable for 30/33 kV primary grid and wind/solar collector feeders

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on CEI 20-13 / IEC 60502-2 / CEI UNEL 35375. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage tiers (Uo/U)
6/10 kV · 8.7/15 kV · 12/20 kV · 18/30 kV (Umax 12 / 17.5 / 24 / 36 kV)
Routine AC test voltage
21 kV (6/10) · 30.5 kV (8.7/15) · 42 kV (12/20) · 63 kV (18/30) (3.5 × Uo)
Partial discharge limit
≤ 5 pC at 1.73 × Uo ambient and after heating cycle
Max. DC resistance @ 20 °C
0.387 Ω/km (50) · 0.193 Ω/km (95) · 0.124 Ω/km (150) · 0.0754 Ω/km (240)

Thermal

Continuous conductor temp.
+105 °C (G7 HEPR rating per CEI 20-13)
Emergency overload temp.
+140 °C
Short-circuit temperature
+250 °C (max. 5 s)

Mechanical

G7 HEPR wall thickness
3.6 mm (8.7/15 kV) · 4.5 mm (12/20 kV) · 6.5 mm (18/30 kV) reduced wall
Min. bend radius
14 × OD (during pulling) · 12 × OD (final fixed position)
Max. pulling tension
50 N / mm² of copper conductor section with pulling stocking/eye

Resistance

Bunched flame propagation
CEI 20-22 II & IEC 60332-3-22 Cat A vertical tray fire test
Hydrogen chloride emission
CEI 20-37 / EN 60754-1: ≤ 18 % HCl (reduced-halogen Rz PVC)
Moisture & direct burial
Suitable for indoor trays, outdoor racks, underground ducts & direct burial

Reference standards

Italian & IEC standards
CEI 20-13 · CEI UNEL 35375 / 35376 · IEC 60502-2
Ampacity tables
CEI UNEL 35027 (+105 °C MV current rating tables)
RoHS, REACH & CE
2011/65/EU RoHS 2, REACH & CE compliant

Identification

CEI code breakdown
R=Cu Cl.2 · G7=HEPR 105°C · H1=Cu tape/wire screen · R=Red PVC Rz sheath
Outer sheath colour
Red (RAL 3000) for MV identification
Customs tariff (HS)
8544.6010

Sizes

6 standard RG7H1R 12/20 kV (CEI 20-13 / UNEL 35375) Single-Core MV configurations

Conductor & H16 screen size, G7 wall, outer diameter, weight and CEI UNEL 35027 ampacity.

12/20 kV dimensions & CEI UNEL 35027 ampacity
CEI designationConductor / screenOuter Ø ≈
mm		Weight ≈
kg/km		Air 30°C
A		Buried 20°C
A		Enquiry
12/20 kV RG7H1R Single-Core (16 mm² Cu Screen)
RG7H1R 1×35/16 12/20kV35 mm² Cl.2 Cu + 16 mm² Cu screen23.5790198182
RG7H1R 1×50/16 12/20kV50 mm² Cl.2 Cu + 16 mm² Cu screen24.8935238215
RG7H1R 1×95/16 12/20kV95 mm² Cl.2 Cu + 16 mm² Cu screen28.21,410362315
RG7H1R 1×150/16 12/20kV150 mm² Cl.2 Cu + 16 mm² Cu screen31.21,960472398
RG7H1R 1×240/16 12/20kV240 mm² Cl.2 Cu + 16 mm² Cu screen35.62,890635518
RG7H1R 1×400/16 12/20kV400 mm² Cl.2 Cu + 16 mm² Cu screen41.24,380845660
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Ampacity in trefoil formation at +105 °C conductor temperature per CEI UNEL 35027. Also available in 8.7/15 kV and 18/30 kV.

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 % 3.5 × Uo AC voltage test (42 kV on 12/20 kV) & PD test (< 5 pC)Zero breakdown for 5 min and partial discharge ≤ 5 pC at 1.73 × UoEvery manufactured drum
Sample tests
CEI 20-22 II Cat A vertical tray fire & outer semicon peel force testChar height ≤ 2.5 m and clean cold-strippable semicon removalPer production batch
G7 HEPR elastic modulus (≥ 4.5 MPa at +150 °C) & 175 kV impulse BIL testPasses 10 positive + 10 negative lightning impulses at +110 °CType qualification

Inspection certificate

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

Product approvals

CEI 20-13 & CEI UNEL 35375IEC 60502-2 CompliantCEI 20-22 II Flame Cat A

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX RG7H1R 12/20kV CEI 20-13 CEI 20-22 II
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

PDFRG7H1R Single-Core HEPR-Insulated MV Cable – technical datasheet6 sizes · construction, technical data, approvalsXLSXRG7H1R 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.

What is 'G7' HEPR insulation in Italian CEI 20-13 cables, and how does it compare to XLPE?
G7 is a High-Modulus Ethylene Propylene Rubber (HEPR) formulated per CEI 20-11 with an elastic modulus ≥ 4.5 MPa at +150 °C. Compared to standard 90 °C XLPE, G7 HEPR is rated for +105 °C continuous operation (+140 °C emergency overload), offers superior flexibility for pulling around tight substation bends, and resists water-treeing without requiring a metallic moisture barrier.
Why does CEI 20-13 permit a thinner insulation wall on G7 HEPR (4.5 mm at 12/20 kV) than on standard EPR (5.5 mm)?
Because High-Modulus HEPR (G7) achieves higher mechanical stiffness at elevated temperatures and higher impulse breakdown strength than conventional low-modulus EPR, IEC 60502-2 and CEI 20-13 classify HEPR alongside XLPE with the reduced nominal insulation wall thickness table (3.6 mm at 8.7/15 kV and 4.5 mm at 12/20 kV).
What is the difference between RG7H1R, RG7H1OR and RG7H1OZR?
RG7H1R is a single-core unarmoured screened MV cable. RG7H1OR twists three screened RG7H1 cores together ('O' = cavi riuniti ad elica visibile / three-core assembly) under a single outer PVC sheath. RG7H1OZR adds galvanized steel armour ('Z') over the three-core assembly for heavy mechanical/direct-burial protection.
Is a halogen-free LSZH version of RG7H1R available for tunnels and public buildings?
Yes. Specify RG7H1M1 (with thermoplastic LSZH M1 sheath per CEI 20-13 / CPR Cca) when halogen-free low-smoke performance is required.

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RG7H1R Single-Core HEPR-Insulated MV Cable

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